Addressing code review feedback

src/Microsoft.SqlTools.ServiceLayer/Connection/Contracts/ConnectParamsExtensions.cs

@@ -0,0 +1,30 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using System;
+
+namespace Microsoft.SqlTools.ServiceLayer.Connection.Contracts
+{
+    /// <summary>
+    /// Extension methods to ConnectParams
+    /// </summary>
+    public static class ConnectParamsExtensions
+    {
+        /// <summary>
+        /// Check that the fields in ConnectParams are all valid
+        /// </summary>
+        public static bool IsValid(this ConnectParams parameters)
+        {
+            return !(
+                String.IsNullOrEmpty(parameters.OwnerUri) ||
+                parameters.Connection == null ||
+                String.IsNullOrEmpty(parameters.Connection.DatabaseName) ||
+                String.IsNullOrEmpty(parameters.Connection.Password) ||
+                String.IsNullOrEmpty(parameters.Connection.ServerName) ||
+                String.IsNullOrEmpty(parameters.Connection.UserName)
+            );
+        }
+    }
+}