Binding Data from Multiple SharePoint Lists using SpSiteDataQuery

      string strList = string.Empty;

strList += "<Lists>";

       strList += "<List ID='21248773-5E96-41CE-AB58-401BC564AE1D'/>";

       strList += "<List ID='4581B2C1-4775-42FD-9FEF-66B201A3BC4A'/>";

       strList += "<List ID='6B8DE688-BD5D-4ABC-A463-9639817CF571'/>";

      strList += "</Lists>";

       sQuery.Lists = strList;

       sQuery.ViewFields = "<FieldRef Name ='Title' />";

dgvMultipleListsData.DataSource = SPContext.Current.Web.GetSiteData(sQuery);

      dgvMultipleListsData.DataBind();