SharePoint Web Parts and SqlClientPermission Errors

Removing SharePoint Web Parts and SqlClientPermission Errors/exceptions

SharePoint Web Parts and SqlClientPermission Errors
Posted on Thursday, May 20, 2004 4:19 PM
If you are developing custom web parts that need to connect to a SQL Server database to retrieve data, you may be confronted with the following error:

{"Request for the permission of type System.Data.SqlClient.SqlClientPermission, System.Data, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 failed." }

This is due to SharePoint Portal Server and Windows SharePoint Services implementation of .NET Code Access Security (CAS).  A solution that addresses the aforementioned error is cited below:

Locate and open the wss_minimaltrust.config file (NOTE: If you’ve gone with the default SharePoint or WSS install, this file is located at <INSTALL_DRIVE>:\Program Files\Common Files\Microsoft Shared\Server Extensions\60\Config)

Add the following element to the SecurityClasses section of this config file:

<SecurityClass Name="SqlClientPermission"
  Description="System.Data.SqlClient.SqlClientPermission, System.Data,
  Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
/>

In the PermissionSet section of this configuration file, add the following:

<IPermission class="SqlClientPermission" version="1"
  Unrestricted="true" />
If you still run into the error, try adding these settings to the wss_mediumtrust.config file.

Yasir Attiq Butt

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