diff --git a/binding/csharp/IP2Region.Net.slnx b/binding/csharp/IP2Region.Net.slnx
new file mode 100644
index 0000000..a4663b7
--- /dev/null
+++ b/binding/csharp/IP2Region.Net.slnx
@@ -0,0 +1,5 @@
+<Solution>
+  <Project Path="IP2Region.Net.BenchMark/IP2Region.Net.BenchMark.csproj" />
+  <Project Path="IP2Region.Net.Test/IP2Region.Net.Test.csproj" />
+  <Project Path="IP2Region.Net/IP2Region.Net.csproj" />
+</Solution>