Added DI for SqlConnection

Author: stuartpa

MssqlMcp/MssqlMcp/ISqlConnectionFactory.cs

@@ -1,9 +1,10 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 
+using Microsoft.Data.SqlClient;
+
 namespace Mssql.McpServer;
 
 public interface ISqlConnectionFactory
 {
-    Task<Microsoft.Data.SqlClient.SqlConnection> GetOpenConnectionAsync();
-}
-
+    Task<SqlConnection> GetOpenConnectionAsync();
+}

MssqlMcp/MssqlMcp/Program.cs

@@ -27,7 +27,7 @@ private static async Task Main(string[] args)
 
         // Register ISqlConnectionFactory and Tools for DI
         _ = builder.Services.AddSingleton<ISqlConnectionFactory, SqlConnectionFactory>();
-        _ = builder.Services.AddScoped<Tools>();
+        _ = builder.Services.AddSingleton<Tools>();
 
         // Register MCP server and tools (instance-based)
         _ = builder.Services

MssqlMcp/MssqlMcp/SqlConnectionFactory.cs

@@ -1,13 +1,15 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 
+using Microsoft.Data.SqlClient;
+
 namespace Mssql.McpServer;
 
 public class SqlConnectionFactory : ISqlConnectionFactory
 {
-    public async Task<Microsoft.Data.SqlClient.SqlConnection> GetOpenConnectionAsync()
+    public async Task<SqlConnection> GetOpenConnectionAsync()
     {
         var connectionString = SqlConnectionManager.GetSqlConfig();
-        var conn = new Microsoft.Data.SqlClient.SqlConnection(connectionString);
+        var conn = new SqlConnection(connectionString);
         await conn.OpenAsync();
         return conn;
     }