Both DataSource and DataSourceID are defined on 'gvProducts'.  Remove one definition.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: Both DataSource and DataSourceID are defined on 'gvProducts'.  Remove one definition.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[InvalidOperationException: Both DataSource and DataSourceID are defined on 'gvProducts'.  Remove one definition.]
   System.Web.UI.WebControls.DataBoundControl.EnsureSingleDataSource() +9806559
   System.Web.UI.WebControls.DataBoundControl.ConnectToDataSourceView() +35
   System.Web.UI.WebControls.DataBoundControl.GetData() +10
   System.Web.UI.WebControls.DataBoundControl.PerformSelect() +61
   System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +76
   System.Web.UI.WebControls.GridView.DataBind() +10
   QLDH8C.Pages.Products.ProductsList.LoadData() in C:\Users\ducvi\Downloads\QLDH8C\QLDH8C\Pages\Products\ProductsList.aspx.cs:25
   QLDH8C.Pages.Products.ProductsList.Page_Load(Object sender, EventArgs e) in C:\Users\ducvi\Downloads\QLDH8C\QLDH8C\Pages\Products\ProductsList.aspx.cs:12
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4797.0