Adding the SqlDbTypeExtensions (#2688)

Author: saurabh500

src/Microsoft.Data.SqlClient/netcore/src/Microsoft.Data.SqlClient.csproj

@@ -624,6 +624,9 @@
     <Compile Include="$(CommonSourceRoot)System\Diagnostics\CodeAnalysis.cs">
       <Link>Common\System\Diagnostics\CodeAnalysis.cs</Link>
     </Compile>
+    <Compile Include="$(CommonSourceRoot)Microsoft\Data\SqlDbTypeExtensions.cs">
+      <Link>Microsoft\Data\SqlDbTypeExtensions.cs</Link>
+    </Compile>
 
     <Compile Include="Interop\SNINativeMethodWrapper.Common.cs" />
     <Compile Include="Microsoft\Data\Common\DbConnectionOptions.cs" />

src/Microsoft.Data.SqlClient/netfx/src/Microsoft.Data.SqlClient.csproj

@@ -645,6 +645,9 @@
     <Compile Include="$(CommonSourceRoot)\Microsoft\Data\ProviderBase\DbReferenceCollection.cs">
       <Link>Microsoft\Data\ProviderBase\DbReferenceCollection.cs</Link>
     </Compile>
+    <Compile Include="$(CommonSourceRoot)Microsoft\Data\SqlDbTypeExtensions.cs">
+      <Link>Microsoft\Data\SqlDbTypeExtensions.cs</Link>
+    </Compile>
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Common\src\Microsoft\Data\Common\NameValuePermission.cs" />

src/Microsoft.Data.SqlClient/src/Microsoft/Data/SqlDbTypeExtensions.cs

@@ -0,0 +1,23 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Data;
+
+namespace Microsoft.Data
+{
+    /// <summary>
+    /// Extensions for SqlDbType enum to enable its usage.
+    /// </summary>
+    public static class SqlDbTypeExtensions
+    {
+        /// <summary>
+        /// Represents the JSON Data type in SQL Server.
+        /// </summary>
+#if NET9_0_OR_GREATER
+        public const SqlDbType Json = SqlDbType.Json;
+#else
+        public const SqlDbType Json = (SqlDbType)35;
+#endif
+    }
+}