diff --git a/problems/0035.搜索插入位置.md b/problems/0035.搜索插入位置.md
index 04dd0cac..80b7e40e 100644
--- a/problems/0035.搜索插入位置.md
+++ b/problems/0035.搜索插入位置.md
@@ -258,6 +258,37 @@ public int searchInsert(int[] nums, int target) {
 
 
 
+### C#
+
+```go
+public int SearchInsert(int[] nums, int target) {
+	
+	var left = 0;
+	var right = nums.Length - 1;
+
+	while (left <= right) {
+		
+		var curr = (left + right) / 2;
+		
+		if (nums[curr] == target)
+		{
+			return curr;	
+		}
+		
+		if (target > nums[curr]) {
+			left = curr + 1;
+		}
+		else {
+			right = curr - 1;
+		}
+	}
+	
+	return left;
+}
+```
+
+
+
 ### Golang
 
 ```go
@@ -500,3 +531,4 @@ int searchInsert(int* nums, int numsSize, int target){
 <a href="https://programmercarl.com/other/kstar.html" target="_blank">
   <img src="../pics/网站星球宣传海报.jpg" width="1000"/>
 </a>
+