diff --git a/202508/498 FindDiagonalOrder/C#/FindDiagonalOrder.csproj b/202508/498 FindDiagonalOrder/C#/FindDiagonalOrder.csproj
new file mode 100644
index 0000000..2150e37
--- /dev/null
+++ b/202508/498 FindDiagonalOrder/C#/FindDiagonalOrder.csproj	
@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
diff --git a/202508/498 FindDiagonalOrder/C#/Program.cs b/202508/498 FindDiagonalOrder/C#/Program.cs
new file mode 100644
index 0000000..1668ca8
--- /dev/null
+++ b/202508/498 FindDiagonalOrder/C#/Program.cs	
@@ -0,0 +1,5 @@
+public class Solution {
+    public int[] FindDiagonalOrder(int[][] mat) {
+        
+    }
+}
\ No newline at end of file
diff --git a/202508/498 FindDiagonalOrder/Go/main.go b/202508/498 FindDiagonalOrder/Go/main.go
new file mode 100644
index 0000000..e69de29