diff --git a/problems/1317-convert-integer-to-the-sum-of-two-no-zero-integers/csharp/Program.cs b/problems/1317-convert-integer-to-the-sum-of-two-no-zero-integers/csharp/Program.cs
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+++ b/problems/1317-convert-integer-to-the-sum-of-two-no-zero-integers/csharp/Program.cs
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+// LeetCode 1317: Convert Integer To The Sum Of Two No Zero Integers
+// 難度: Easy
+// 日期: 2025-09-08
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+public class Solution
+{
+    public int[] GetNoZeroIntegers(int n)
+    {
+        for (var i = 1; i < n; i++)
+        {
+            if (CheckIntegersWithNoZero(i) && CheckIntegersWithNoZero(n - i))
+            {
+                return new int[]{i, n - i};
+            }
+        }
+        return new int[]{};
+    }
+
+    private bool CheckIntegersWithNoZero(int n)
+    {
+        while (n > 0)
+        {
+            if (n % 10 == 0)
+            {
+                return false;
+            }
+            n /= 10;
+        }
+        return true;
+    }
+}
+
+public class Program {
+    public static void Main() {
+        var Solution = new Solution();
+        TestCase1(Solution);
+        // TestCase2();
+    }
+    
+    static void TestCase1(Solution Solution) {
+        // Input: 
+        var input = 1010;
+        // Expected: [11, 999]
+        int[] result = Solution.GetNoZeroIntegers(input);
+        // Actual: 
+        Console.WriteLine($"Test 1: {result[0]}, {result[1]}");
+    }
+}
diff --git a/problems/1317-convert-integer-to-the-sum-of-two-no-zero-integers/csharp/csharp.csproj b/problems/1317-convert-integer-to-the-sum-of-two-no-zero-integers/csharp/csharp.csproj
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--- /dev/null
+++ b/problems/1317-convert-integer-to-the-sum-of-two-no-zero-integers/csharp/csharp.csproj
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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>