diff --git a/solution/0000-0099/0022.Generate Parentheses/README.md b/solution/0000-0099/0022.Generate Parentheses/README.md
index 5dd9d47a628aa..b470955a10c8a 100644
--- a/solution/0000-0099/0022.Generate Parentheses/README.md	
+++ b/solution/0000-0099/0022.Generate Parentheses/README.md	
@@ -225,6 +225,33 @@ var generateParenthesis = function (n) {
 };
 ```
 
+#### C#
+
+```cs
+public class Solution {
+    private List<string> ans = new List<string>();
+    private int n;
+
+    public List<string> GenerateParenthesis(int n) {
+        this.n = n;
+        Dfs(0, 0, "");
+        return ans;
+    }
+
+    private void Dfs(int l, int r, string t) {
+        if (l > n || r > n || l < r) {
+            return;
+        }
+        if (l == n && r == n) {
+            ans.Add(t);
+            return;
+        }
+        Dfs(l + 1, r, t + "(");
+        Dfs(l, r + 1, t + ")");
+    }
+}
+```
+
 #### PHP
 
 ```php
diff --git a/solution/0000-0099/0022.Generate Parentheses/README_EN.md b/solution/0000-0099/0022.Generate Parentheses/README_EN.md
index 6eeb019475ce1..867a20c5fb1d8 100644
--- a/solution/0000-0099/0022.Generate Parentheses/README_EN.md	
+++ b/solution/0000-0099/0022.Generate Parentheses/README_EN.md	
@@ -220,6 +220,33 @@ var generateParenthesis = function (n) {
 };
 ```
 
+#### C#
+
+```cs
+public class Solution {
+    private List<string> ans = new List<string>();
+    private int n;
+
+    public List<string> GenerateParenthesis(int n) {
+        this.n = n;
+        Dfs(0, 0, "");
+        return ans;
+    }
+
+    private void Dfs(int l, int r, string t) {
+        if (l > n || r > n || l < r) {
+            return;
+        }
+        if (l == n && r == n) {
+            ans.Add(t);
+            return;
+        }
+        Dfs(l + 1, r, t + "(");
+        Dfs(l, r + 1, t + ")");
+    }
+}
+```
+
 #### PHP
 
 ```php
diff --git a/solution/0000-0099/0022.Generate Parentheses/Solution.cs b/solution/0000-0099/0022.Generate Parentheses/Solution.cs
new file mode 100644
index 0000000000000..6f6257e62a39e
--- /dev/null
+++ b/solution/0000-0099/0022.Generate Parentheses/Solution.cs	
@@ -0,0 +1,22 @@
+public class Solution {
+    private List<string> ans = new List<string>();
+    private int n;
+
+    public List<string> GenerateParenthesis(int n) {
+        this.n = n;
+        Dfs(0, 0, "");
+        return ans;
+    }
+
+    private void Dfs(int l, int r, string t) {
+        if (l > n || r > n || l < r) {
+            return;
+        }
+        if (l == n && r == n) {
+            ans.Add(t);
+            return;
+        }
+        Dfs(l + 1, r, t + "(");
+        Dfs(l, r + 1, t + ")");
+    }
+}
\ No newline at end of file