diff --git a/README.md b/README.md
index 82be05d..8b7d82e 100644
--- a/README.md
+++ b/README.md
@@ -206,6 +206,7 @@ By default, TreeSJ has presets for these languages:
 - **Rust**;
 - **R**;
 - **C/C++**;
+- **C#**;
 - **Nix**;
 - **Kotlin**;
 - **Bash**;
diff --git a/doc/treesj.txt b/doc/treesj.txt
index 3d07eb1..f306a55 100644
--- a/doc/treesj.txt
+++ b/doc/treesj.txt
@@ -212,6 +212,7 @@ By default, TreeSJ has presets for these languages:
 - **Rust**;
 - **R**;
 - **C/C++**;
+- **C#**;
 - **Nix**;
 - **Kotlin**;
 - **Bash**;
diff --git a/lua/treesj/langs/c_sharp.lua b/lua/treesj/langs/c_sharp.lua
new file mode 100644
index 0000000..f09e5be
--- /dev/null
+++ b/lua/treesj/langs/c_sharp.lua
@@ -0,0 +1,83 @@
+local lang_utils = require('treesj.langs.utils')
+
+local args = lang_utils.set_preset_for_args()
+local list_no_space = lang_utils.set_preset_for_list({
+  join = {
+    space_in_brackets = false,
+  },
+})
+local list_space = lang_utils.set_preset_for_list()
+local statement = lang_utils.set_preset_for_statement()
+local target_args = { target_nodes = { 'argument_list' } }
+local target_block = { target_nodes = { 'block' } }
+local target_creation = {
+  target_nodes = { 'argument_list', 'initializer_expression' },
+}
+local target_param_list = { target_nodes = { 'parameter_list' } }
+local type_args = lang_utils.set_preset_for_args({
+  both = {
+    last_separator = false,
+  },
+})
+
+return {
+  accessor_list = statement,
+  argument_list = args,
+  attribute = {
+    target_nodes = { 'attribute_argument_list' },
+  },
+  attribute_argument_list = args,
+  attribute_list = list_no_space,
+  block = statement,
+  bracketed_argument_list = args,
+  bracketed_parameter_list = args,
+  catch_clause = target_block,
+  checked_statement = target_block,
+  collection_expression = list_no_space,
+  constructor_declaration = target_param_list,
+  constructor_initializer = target_args,
+  conversion_operator_declaration = target_param_list,
+  delegate_declaration = target_param_list,
+  do_statement = target_block,
+  element_access_expression = {
+    target_nodes = { 'bracketed_argument_list' },
+  },
+  element_binding_expression = args,
+  enum_declaration = {
+    target_nodes = { 'enum_member_declaration_list' },
+  },
+  enum_member_declaration_list = list_space,
+  finally_clause = target_block,
+  fixed_statement = target_block,
+  for_statement = target_block,
+  foreach_statement = target_block,
+  if_statement = target_block,
+  implicit_object_creation_expression = target_creation,
+  indexer_declaration = {
+    target_nodes = { 'bracketed_parameter_list' },
+  },
+  initializer_expression = list_space,
+  invocation_expression = target_args,
+  list_pattern = list_no_space,
+  local_function_statement = target_param_list,
+  lock_statement = target_block,
+  method_declaration = target_param_list,
+  object_creation_expression = target_creation,
+  operator_declaration = target_param_list,
+  parameter_list = args,
+  property_pattern_clause = list_space,
+  switch_expression = lang_utils.set_preset_for_list({
+    both = {
+      -- don't format the thing being evaluated or the `switch` keyword
+      shrink_node = { from = '{', to = '}' },
+    },
+  }),
+  try_statement = target_block,
+  tuple_expression = args,
+  tuple_type = args,
+  type_argument_list = type_args,
+  type_parameter_list = type_args,
+  unsafe_statement = target_block,
+  using_statement = target_block,
+  while_statement = target_block,
+}
diff --git a/lua/treesj/langs/init.lua b/lua/treesj/langs/init.lua
index 58c5890..6d8f9f5 100644
--- a/lua/treesj/langs/init.lua
+++ b/lua/treesj/langs/init.lua
@@ -26,6 +26,7 @@ M.configured_langs = {
   'r',
   'cpp',
   'c',
+  'c_sharp',
   'toml',
   'yaml',
   'nix',
diff --git a/tests/langs/c_sharp/join_spec.lua b/tests/langs/c_sharp/join_spec.lua
new file mode 100644
index 0000000..1ca93fa
--- /dev/null
+++ b/tests/langs/c_sharp/join_spec.lua
@@ -0,0 +1,405 @@
+local tu = require('tests.utils')
+
+local PATH = './tests/sample/index.cs'
+local LANG = 'c_sharp'
+local MODE = 'join'
+
+local data = {
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "attribute_list", preset default',
+    cursor = { 11, 0 },
+    expected = { 6, 8 },
+    result = { 10, 12 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "attribute", preset default',
+    cursor = { 22, 1 },
+    expected = { 17, 19 },
+    result = { 21, 23 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "type_parameter_list", preset default',
+    cursor = { 33, 2 },
+    expected = { 28, 29 },
+    result = { 31, 32 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "enum_member_declaration_list", preset default',
+    cursor = { 42, 2 },
+    expected = { 37, 38 },
+    result = { 40, 41 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "enum_declaration", preset default',
+    cursor = { 51, 0 },
+    expected = { 47, 48 },
+    result = { 50, 51 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "delegate_declaration", preset default',
+    cursor = { 61, 13 },
+    expected = { 57, 58 },
+    result = { 60, 61 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "constructor_declaration", preset default',
+    cursor = { 72, 9 },
+    expected = { 68, 69 },
+    result = { 71, 72 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "method_declaration", preset default',
+    cursor = { 82, 14 },
+    expected = { 78, 79 },
+    result = { 81, 82 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "accessor_list", preset default',
+    cursor = { 93, 4 },
+    expected = { 88, 89 },
+    result = { 91, 92 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "bracketed_parameter_list", preset default',
+    cursor = { 101, 17 },
+    expected = { 97, 98 },
+    result = { 100, 101 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "block", preset default',
+    cursor = { 110, 26 },
+    expected = { 106, 107 },
+    result = { 109, 110 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "indexer_declaration", preset default',
+    cursor = { 119, 13 },
+    expected = { 115, 116 },
+    result = { 118, 119 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "operator_declaration", preset default',
+    cursor = { 128, 24 },
+    expected = { 124, 125 },
+    result = { 127, 128 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "conversion_operator_declaration", preset default',
+    cursor = { 137, 16 },
+    expected = { 133, 134 },
+    result = { 136, 137 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "constructor_initializer", preset default',
+    cursor = { 145, 37 },
+    expected = { 141, 142 },
+    result = { 144, 145 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "tuple_type", preset default',
+    cursor = { 156, 4 },
+    expected = { 151, 152 },
+    result = { 154, 155 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "invocation_expression", preset default',
+    cursor = { 175, 4 },
+    expected = { 171, 172 },
+    result = { 174, 175 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "object_creation_expression", preset default',
+    cursor = { 184, 16 },
+    expected = { 180, 181 },
+    result = { 183, 184 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "implicit_object_creation_expression", preset default',
+    cursor = { 193, 18 },
+    expected = { 189, 190 },
+    result = { 192, 193 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "type_argument_list", preset default',
+    cursor = { 203, 6 },
+    expected = { 198, 199 },
+    result = { 201, 202 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "initializer_expression", preset default',
+    cursor = { 212, 6 },
+    expected = { 207, 208 },
+    result = { 210, 211 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "collection_expression", preset default',
+    cursor = { 222, 6 },
+    expected = { 217, 218 },
+    result = { 220, 221 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "element_binding_expression", preset default',
+    cursor = { 232, 6 },
+    expected = { 227, 228 },
+    result = { 230, 231 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "bracketed_argument_list", preset default',
+    cursor = { 241, 6 },
+    expected = { 236, 237 },
+    result = { 239, 240 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "element_access_expression", preset default',
+    cursor = { 249, 15 },
+    expected = { 245, 246 },
+    result = { 248, 249 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "tuple_expression", preset default',
+    cursor = { 259, 6 },
+    expected = { 254, 255 },
+    result = { 257, 258 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "switch_expression", preset default',
+    cursor = { 267, 21 },
+    expected = { 263, 264 },
+    result = { 266, 267 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "list_pattern", preset default',
+    cursor = { 277, 6 },
+    expected = { 272, 273 },
+    result = { 275, 276 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "property_pattern_clause", preset default',
+    cursor = { 287, 6 },
+    expected = { 282, 283 },
+    result = { 285, 286 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "if_statement", preset default',
+    cursor = { 295, 4 },
+    expected = { 291, 292 },
+    result = { 294, 295 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "while_statement", preset default',
+    cursor = { 304, 4 },
+    expected = { 300, 301 },
+    result = { 303, 304 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "do_statement", preset default',
+    cursor = { 313, 4 },
+    expected = { 309, 310 },
+    result = { 312, 313 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "for_statement", preset default',
+    cursor = { 322, 4 },
+    expected = { 318, 319 },
+    result = { 321, 322 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "foreach_statement", preset default',
+    cursor = { 331, 4 },
+    expected = { 327, 328 },
+    result = { 330, 331 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "using_statement", preset default',
+    cursor = { 340, 4 },
+    expected = { 336, 337 },
+    result = { 339, 340 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "lock_statement", preset default',
+    cursor = { 349, 4 },
+    expected = { 345, 346 },
+    result = { 348, 349 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "checked_statement", preset default',
+    cursor = { 358, 4 },
+    expected = { 354, 355 },
+    result = { 357, 358 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "unsafe_statement", preset default',
+    cursor = { 367, 4 },
+    expected = { 363, 364 },
+    result = { 366, 367 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "fixed_statement", preset default',
+    cursor = { 376, 4 },
+    expected = { 372, 373 },
+    result = { 375, 376 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "try_statement", preset default',
+    cursor = { 385, 4 },
+    expected = { 381, 382 },
+    result = { 384, 385 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "catch_clause", preset default',
+    cursor = { 393, 22 },
+    expected = { 389, 390 },
+    result = { 392, 393 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "finally_clause", preset default',
+    cursor = { 401, 62 },
+    expected = { 397, 398 },
+    result = { 400, 401 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "local_function_statement", preset default',
+    cursor = { 409, 9 },
+    expected = { 405, 406 },
+    result = { 408, 409 },
+  },
+}
+
+local treesj = require('treesj')
+local opts = {}
+treesj.setup(opts)
+
+describe('TreeSJ ' .. MODE:upper() .. ':', function()
+  for _, value in ipairs(data) do
+    tu._test_format(value, treesj)
+  end
+end)
diff --git a/tests/langs/c_sharp/split_spec.lua b/tests/langs/c_sharp/split_spec.lua
new file mode 100644
index 0000000..9c85980
--- /dev/null
+++ b/tests/langs/c_sharp/split_spec.lua
@@ -0,0 +1,405 @@
+local tu = require('tests.utils')
+
+local PATH = './tests/sample/index.cs'
+local LANG = 'c_sharp'
+local MODE = 'split'
+
+local data = {
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "attribute_list", preset default',
+    cursor = { 7, 0 },
+    expected = { 10, 15 },
+    result = { 6, 11 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "attribute", preset default',
+    cursor = { 18, 1 },
+    expected = { 21, 26 },
+    result = { 17, 22 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "type_parameter_list", preset default',
+    cursor = { 29, 11 },
+    expected = { 31, 35 },
+    result = { 28, 32 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "enum_member_declaration_list", preset default',
+    cursor = { 38, 12 },
+    expected = { 40, 45 },
+    result = { 37, 42 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "enum_declaration", preset default',
+    cursor = { 48, 0 },
+    expected = { 50, 55 },
+    result = { 47, 52 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "delegate_declaration", preset default',
+    cursor = { 58, 13 },
+    expected = { 60, 64 },
+    result = { 57, 61 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "constructor_declaration", preset default',
+    cursor = { 69, 9 },
+    expected = { 71, 76 },
+    result = { 68, 73 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "method_declaration", preset default',
+    cursor = { 79, 14 },
+    expected = { 81, 86 },
+    result = { 78, 83 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "accessor_list", preset default',
+    cursor = { 89, 23 },
+    expected = { 91, 95 },
+    result = { 88, 92 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "bracketed_parameter_list", preset default',
+    cursor = { 98, 17 },
+    expected = { 100, 104 },
+    result = { 97, 101 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "block", preset default',
+    cursor = { 107, 26 },
+    expected = { 109, 113 },
+    result = { 106, 110 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "indexer_declaration", preset default',
+    cursor = { 116, 13 },
+    expected = { 118, 122 },
+    result = { 115, 119 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "operator_declaration", preset default',
+    cursor = { 125, 24 },
+    expected = { 127, 131 },
+    result = { 124, 128 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "conversion_operator_declaration", preset default',
+    cursor = { 134, 16 },
+    expected = { 136, 139 },
+    result = { 133, 136 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "constructor_initializer", preset default',
+    cursor = { 142, 37 },
+    expected = { 144, 149 },
+    result = { 141, 146 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "tuple_type", preset default',
+    cursor = { 152, 10 },
+    expected = { 154, 158 },
+    result = { 151, 155 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "invocation_expression", preset default',
+    cursor = { 172, 4 },
+    expected = { 174, 178 },
+    result = { 171, 175 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "object_creation_expression", preset default',
+    cursor = { 181, 16 },
+    expected = { 183, 187 },
+    result = { 180, 184 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "implicit_object_creation_expression", preset default',
+    cursor = { 190, 18 },
+    expected = { 192, 196 },
+    result = { 189, 193 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "type_argument_list", preset default',
+    cursor = { 199, 31 },
+    expected = { 201, 205 },
+    result = { 198, 202 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "initializer_expression", preset default',
+    cursor = { 208, 33 },
+    expected = { 210, 215 },
+    result = { 207, 212 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "collection_expression", preset default',
+    cursor = { 218, 20 },
+    expected = { 220, 225 },
+    result = { 217, 222 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "element_binding_expression", preset default',
+    cursor = { 228, 21 },
+    expected = { 230, 234 },
+    result = { 227, 231 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "bracketed_argument_list", preset default',
+    cursor = { 237, 20 },
+    expected = { 239, 243 },
+    result = { 236, 240 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "element_access_expression", preset default',
+    cursor = { 246, 15 },
+    expected = { 248, 252 },
+    result = { 245, 249 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "tuple_expression", preset default',
+    cursor = { 255, 16 },
+    expected = { 257, 261 },
+    result = { 254, 258 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "switch_expression", preset default',
+    cursor = { 264, 21 },
+    expected = { 266, 270 },
+    result = { 263, 267 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "list_pattern", preset default',
+    cursor = { 273, 18 },
+    expected = { 275, 280 },
+    result = { 272, 277 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "property_pattern_clause", preset default',
+    cursor = { 283, 18 },
+    expected = { 285, 289 },
+    result = { 282, 286 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "if_statement", preset default',
+    cursor = { 292, 4 },
+    expected = { 294, 298 },
+    result = { 291, 295 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "while_statement", preset default',
+    cursor = { 301, 4 },
+    expected = { 303, 307 },
+    result = { 300, 304 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "do_statement", preset default',
+    cursor = { 310, 4 },
+    expected = { 312, 316 },
+    result = { 309, 313 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "for_statement", preset default',
+    cursor = { 319, 4 },
+    expected = { 321, 325 },
+    result = { 318, 322 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "foreach_statement", preset default',
+    cursor = { 328, 4 },
+    expected = { 330, 334 },
+    result = { 327, 331 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "using_statement", preset default',
+    cursor = { 337, 4 },
+    expected = { 339, 343 },
+    result = { 336, 340 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "lock_statement", preset default',
+    cursor = { 346, 4 },
+    expected = { 348, 352 },
+    result = { 345, 349 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "checked_statement", preset default',
+    cursor = { 355, 4 },
+    expected = { 357, 361 },
+    result = { 354, 358 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "unsafe_statement", preset default',
+    cursor = { 364, 4 },
+    expected = { 366, 370 },
+    result = { 363, 367 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "fixed_statement", preset default',
+    cursor = { 373, 4 },
+    expected = { 375, 379 },
+    result = { 372, 376 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "try_statement", preset default',
+    cursor = { 382, 4 },
+    expected = { 384, 387 },
+    result = { 381, 384 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "catch_clause", preset default',
+    cursor = { 390, 22 },
+    expected = { 392, 395 },
+    result = { 389, 392 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "finally_clause", preset default',
+    cursor = { 398, 62 },
+    expected = { 400, 403 },
+    result = { 397, 400 },
+  },
+  {
+    path = PATH,
+    mode = MODE,
+    lang = LANG,
+    desc = 'lang "%s", node "local_function_statement", preset default',
+    cursor = { 406, 9 },
+    expected = { 408, 413 },
+    result = { 405, 410 },
+  },
+}
+
+local treesj = require('treesj')
+local opts = {}
+treesj.setup(opts)
+
+describe('TreeSJ ' .. MODE:upper() .. ':', function()
+  for _, value in ipairs(data) do
+    tu._test_format(value, treesj)
+  end
+end)
diff --git a/tests/minimal.lua b/tests/minimal.lua
index 4a7eafe..076bff3 100644
--- a/tests/minimal.lua
+++ b/tests/minimal.lua
@@ -56,3 +56,5 @@ require('nvim-treesitter').setup({
 require('nvim-treesitter')
   .install(require('treesj.langs').configured_langs)
   :wait(20000) -- waiting for parsers to be installed. If some tests will completely fail, try increasing this number
+
+vim.treesitter.language.register('c_sharp', 'cs')
diff --git a/tests/sample/index.cs b/tests/sample/index.cs
new file mode 100644
index 0000000..21c0a82
--- /dev/null
+++ b/tests/sample/index.cs
@@ -0,0 +1,415 @@
+// Code examples based on https://learnxinyminutes.com/docs/csharp/
+
+using System;
+using System.Collections.Generic;
+
+// RESULT OF JOIN (node "attribute_list", preset default)
+[Serializable, Obsolete("Use Frame instead")]
+class Frame { }
+
+// RESULT OF SPLIT (node "attribute_list", preset default)
+[
+  Serializable,
+  Obsolete("Use Frame instead"),
+]
+class Frame { }
+
+// RESULT OF JOIN (node "attribute", preset default)
+[Obsolete("Use Wheel instead", true)]
+class Wheel { }
+
+// RESULT OF SPLIT (node "attribute", preset default)
+[Obsolete(
+  "Use Wheel instead",
+  true
+)]
+class Wheel { }
+
+// RESULT OF JOIN (node "type_parameter_list", preset default)
+class Pair<TFirst, TSecond> { }
+
+// RESULT OF SPLIT (node "type_parameter_list", preset default)
+class Pair<
+  TFirst,
+  TSecond
+> { }
+
+// RESULT OF JOIN (node "enum_member_declaration_list", preset default)
+enum Gear { Low, Mid, High }
+
+// RESULT OF SPLIT (node "enum_member_declaration_list", preset default)
+enum Gear {
+  Low,
+  Mid,
+  High,
+}
+
+// RESULT OF JOIN (node "enum_declaration", preset default)
+enum Gear { Low, Mid, High }
+
+// RESULT OF SPLIT (node "enum_declaration", preset default)
+enum Gear {
+  Low,
+  Mid,
+  High,
+}
+
+// RESULT OF JOIN (node "delegate_declaration", preset default)
+delegate int Shift(int gear, bool force);
+
+// RESULT OF SPLIT (node "delegate_declaration", preset default)
+delegate int Shift(
+  int gear,
+  bool force
+);
+
+class Bicycle
+{
+  // RESULT OF JOIN (node "constructor_declaration", preset default)
+  public Bicycle(int startCadence, int startSpeed, string name) { }
+
+  // RESULT OF SPLIT (node "constructor_declaration", preset default)
+  public Bicycle(
+    int startCadence,
+    int startSpeed,
+    string name
+  ) { }
+
+  // RESULT OF JOIN (node "method_declaration", preset default)
+  public void SpeedUp(int increment, bool logChange, string reason) { }
+
+  // RESULT OF SPLIT (node "method_declaration", preset default)
+  public void SpeedUp(
+    int increment,
+    bool logChange,
+    string reason
+  ) { }
+
+  // RESULT OF JOIN (node "accessor_list", preset default)
+  public int Cadence { get; set; }
+
+  // RESULT OF SPLIT (node "accessor_list", preset default)
+  public int Cadence {
+    get;
+    set;
+  }
+
+  // RESULT OF JOIN (node "bracketed_parameter_list", preset default)
+  public int this[int row, int column] { get => 0; }
+
+  // RESULT OF SPLIT (node "bracketed_parameter_list", preset default)
+  public int this[
+    int row,
+    int column
+  ] { get => 0; }
+
+  // RESULT OF JOIN (node "block", preset default)
+  public int GetCadence() { Report(); return Cadence; }
+
+  // RESULT OF SPLIT (node "block", preset default)
+  public int GetCadence() {
+    Report();
+    return Cadence;
+  }
+
+  // RESULT OF JOIN (node "indexer_declaration", preset default)
+  public int this[int row, int column] => 0;
+
+  // RESULT OF SPLIT (node "indexer_declaration", preset default)
+  public int this[
+    int row,
+    int column
+  ] => 0;
+
+  // RESULT OF JOIN (node "operator_declaration", preset default)
+  public static Bicycle operator +(Bicycle one, Bicycle two) => one;
+
+  // RESULT OF SPLIT (node "operator_declaration", preset default)
+  public static Bicycle operator +(
+    Bicycle one,
+    Bicycle two
+  ) => one;
+
+  // RESULT OF JOIN (node "conversion_operator_declaration", preset default)
+  public static explicit operator int(Bicycle bike) => 0;
+
+  // RESULT OF SPLIT (node "conversion_operator_declaration", preset default)
+  public static explicit operator int(
+    Bicycle bike
+  ) => 0;
+
+  // RESULT OF JOIN (node "constructor_initializer", preset default)
+  public Bicycle(int startCadence) : this(startCadence, 0, "bike") { }
+
+  // RESULT OF SPLIT (node "constructor_initializer", preset default)
+  public Bicycle(int startCadence) : this(
+    startCadence,
+    0,
+    "bike"
+  ) { }
+
+  // RESULT OF JOIN (node "tuple_type", preset default)
+  public (int gear, string name) Describe() => (1, "low");
+
+  // RESULT OF SPLIT (node "tuple_type", preset default)
+  public (
+    int gear,
+    string name
+  ) Describe() => (1, "low");
+
+  public void Ride()
+  {
+    var grid = new int[3, 3];
+    var row = 1;
+    var column = 2;
+    var items = new List<int>();
+    var gate = new object();
+    var gear = 1;
+    var radius = 2;
+    var pressure = 3;
+
+    // RESULT OF JOIN (node "invocation_expression", preset default)
+    Console.WriteLine("pi = {0:F5}", Math.PI);
+
+    // RESULT OF SPLIT (node "invocation_expression", preset default)
+    Console.WriteLine(
+      "pi = {0:F5}",
+      Math.PI
+    );
+
+    // RESULT OF JOIN (node "object_creation_expression", preset default)
+    var wheel = new Wheel(radius, pressure);
+
+    // RESULT OF SPLIT (node "object_creation_expression", preset default)
+    var wheel = new Wheel(
+      radius,
+      pressure
+    );
+
+    // RESULT OF JOIN (node "implicit_object_creation_expression", preset default)
+    Wheel spare = new(radius, pressure);
+
+    // RESULT OF SPLIT (node "implicit_object_creation_expression", preset default)
+    Wheel spare = new(
+      radius,
+      pressure
+    );
+
+    // RESULT OF JOIN (node "type_argument_list", preset default)
+    var gears = new Dictionary<string, int>();
+
+    // RESULT OF SPLIT (node "type_argument_list", preset default)
+    var gears = new Dictionary<
+      string,
+      int
+    >();
+
+    // RESULT OF JOIN (node "initializer_expression", preset default)
+    var ratios = new List<int> { 1, 2, 3 };
+
+    // RESULT OF SPLIT (node "initializer_expression", preset default)
+    var ratios = new List<int> {
+      1,
+      2,
+      3,
+    };
+
+    // RESULT OF JOIN (node "collection_expression", preset default)
+    int[] values = [1, 2, 3];
+
+    // RESULT OF SPLIT (node "collection_expression", preset default)
+    int[] values = [
+      1,
+      2,
+      3,
+    ];
+
+    // RESULT OF JOIN (node "element_binding_expression", preset default)
+    var cell = grid?[row, column];
+
+    // RESULT OF SPLIT (node "element_binding_expression", preset default)
+    var cell = grid?[
+      row,
+      column
+    ];
+
+    // RESULT OF JOIN (node "bracketed_argument_list", preset default)
+    var slot = grid[row, column];
+
+    // RESULT OF SPLIT (node "bracketed_argument_list", preset default)
+    var slot = grid[
+      row,
+      column
+    ];
+
+    // RESULT OF JOIN (node "element_access_expression", preset default)
+    var slot = grid[row, column];
+
+    // RESULT OF SPLIT (node "element_access_expression", preset default)
+    var slot = grid[
+      row,
+      column
+    ];
+
+    // RESULT OF JOIN (node "tuple_expression", preset default)
+    var gear = (1, "low");
+
+    // RESULT OF SPLIT (node "tuple_expression", preset default)
+    var gear = (
+      1,
+      "low"
+    );
+
+    // RESULT OF JOIN (node "switch_expression", preset default)
+    var label = gear switch { 1 => "low", _ => "high" };
+
+    // RESULT OF SPLIT (node "switch_expression", preset default)
+    var label = gear switch {
+      1 => "low",
+      _ => "high",
+    };
+
+    // RESULT OF JOIN (node "list_pattern", preset default)
+    if (items is [1, 2, 3]) { Report(); }
+
+    // RESULT OF SPLIT (node "list_pattern", preset default)
+    if (items is [
+      1,
+      2,
+      3,
+    ]) { Report(); }
+
+    // RESULT OF JOIN (node "property_pattern_clause", preset default)
+    if (this is { Cadence: 1, Speed: 2 }) { Report(); }
+
+    // RESULT OF SPLIT (node "property_pattern_clause", preset default)
+    if (this is {
+      Cadence: 1,
+      Speed: 2,
+    }) { Report(); }
+
+    // RESULT OF JOIN (node "if_statement", preset default)
+    if (Cadence > 0) { Report(); Stop(); }
+
+    // RESULT OF SPLIT (node "if_statement", preset default)
+    if (Cadence > 0) {
+      Report();
+      Stop();
+    }
+
+    // RESULT OF JOIN (node "while_statement", preset default)
+    while (Cadence > 0) { Report(); Stop(); }
+
+    // RESULT OF SPLIT (node "while_statement", preset default)
+    while (Cadence > 0) {
+      Report();
+      Stop();
+    }
+
+    // RESULT OF JOIN (node "do_statement", preset default)
+    do { Report(); Stop(); } while (Cadence > 0);
+
+    // RESULT OF SPLIT (node "do_statement", preset default)
+    do {
+      Report();
+      Stop();
+    } while (Cadence > 0);
+
+    // RESULT OF JOIN (node "for_statement", preset default)
+    for (int index = 0; index < 3; index++) { Report(); Stop(); }
+
+    // RESULT OF SPLIT (node "for_statement", preset default)
+    for (int index = 0; index < 3; index++) {
+      Report();
+      Stop();
+    }
+
+    // RESULT OF JOIN (node "foreach_statement", preset default)
+    foreach (var item in items) { Report(); Stop(); }
+
+    // RESULT OF SPLIT (node "foreach_statement", preset default)
+    foreach (var item in items) {
+      Report();
+      Stop();
+    }
+
+    // RESULT OF JOIN (node "using_statement", preset default)
+    using (var file = Open()) { Report(); Stop(); }
+
+    // RESULT OF SPLIT (node "using_statement", preset default)
+    using (var file = Open()) {
+      Report();
+      Stop();
+    }
+
+    // RESULT OF JOIN (node "lock_statement", preset default)
+    lock (gate) { Report(); Stop(); }
+
+    // RESULT OF SPLIT (node "lock_statement", preset default)
+    lock (gate) {
+      Report();
+      Stop();
+    }
+
+    // RESULT OF JOIN (node "checked_statement", preset default)
+    checked { Report(); Stop(); }
+
+    // RESULT OF SPLIT (node "checked_statement", preset default)
+    checked {
+      Report();
+      Stop();
+    }
+
+    // RESULT OF JOIN (node "unsafe_statement", preset default)
+    unsafe { Report(); Stop(); }
+
+    // RESULT OF SPLIT (node "unsafe_statement", preset default)
+    unsafe {
+      Report();
+      Stop();
+    }
+
+    // RESULT OF JOIN (node "fixed_statement", preset default)
+    fixed (int* pin = &row) { Report(); Stop(); }
+
+    // RESULT OF SPLIT (node "fixed_statement", preset default)
+    fixed (int* pin = &row) {
+      Report();
+      Stop();
+    }
+
+    // RESULT OF JOIN (node "try_statement", preset default)
+    try { Report(); } catch (Exception error) { Log(error); } finally { Stop(); }
+
+    // RESULT OF SPLIT (node "try_statement", preset default)
+    try {
+      Report();
+    } catch (Exception error) { Log(error); } finally { Stop(); }
+
+    // RESULT OF JOIN (node "catch_clause", preset default)
+    try { Report(); } catch (Exception error) { Log(error); } finally { Stop(); }
+
+    // RESULT OF SPLIT (node "catch_clause", preset default)
+    try { Report(); } catch (Exception error) {
+      Log(error);
+    } finally { Stop(); }
+
+    // RESULT OF JOIN (node "finally_clause", preset default)
+    try { Report(); } catch (Exception error) { Log(error); } finally { Stop(); }
+
+    // RESULT OF SPLIT (node "finally_clause", preset default)
+    try { Report(); } catch (Exception error) { Log(error); } finally {
+      Stop();
+    }
+
+    // RESULT OF JOIN (node "local_function_statement", preset default)
+    void Shift(int gear, bool force, string reason) { }
+
+    // RESULT OF SPLIT (node "local_function_statement", preset default)
+    void Shift(
+      int gear,
+      bool force,
+      string reason
+    ) { }
+  }
+}