类型的权限已失败 SqlClientPermission

错误描述:

请求“System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089”类型的权限已失败。”

方法1:

　　C:\Program Files\Common Files\Microsoft Shared\web server extensions\12|40|60\CONFIG\wss_minimaltrust.config

增加以下配置:

     SecurityClasses下增加：

　　<SecurityClass Name="SqlClientPermission" Description="System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, 　　　　Culture=neutral, PublicKeyToken=b77a5c561934e089"/>

　　NamedPermissionSets下增加:

  　　　　<PermissionSet class="System.Security.NamedPermissionSet"  version="1"  Name="CustomLocalIntranet"  Description="Custom permission set given to applications on    the local intranet">
              <IPermission class="System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1"   AllowBlankPassword="False">
                <add ConnectionString="Data Source=(local);Integrated Security=true;"  KeyRestrictions="Initial Catalog=;Connection Timeout=;   Encrypt=;Packet Size=;"    KeyRestrictionBehavior="AllowOnly" />
              </IPermission>
            </PermissionSet>

　　　　或：   <IPermission class="SqlClientPermission"
                     version="1"
                     Unrestricted="true"
                             />

方法2:

    Web.config:

　　<trust level="Full" originUrl="" />

　　http://blog.csdn.net/qq546937127/archive/2009/06/29/4305677.aspx

方法1为测试通过，方法二通过