SqlException错误处理

Question

我想在我的代码中捕获特定的SqlExceptions。假设如果我想检查是否由于某些连接失败而导致异常，那么我想向客户端DB Connectivity issue发送消息。有没有办法可以通过编程方式检查它？

public void GetData()
{
    try
    {
        using (con)
        {
            ....
            con.Open();
            cmd.ExecuteNonQuery();
        }
    }
    catch (SqlException ex)
    {
        System.ServiceModel.Web.WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.OK;
        //if(ex == sqlconnectionexception)
        throw new FaultException(new FaultReason(new FaultReasonText("DB Connectivity issue")));
    }  
}