How to delete the selected row in Gridview

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ASP.NET

i use the following code for deleting seleted row in gridview.But the Removeat function make a error.can u solve this..advance thanks..

for(int i=0;i<GridView2.Rows.Count;i++)
    {
      CheckBox chkSel=(CheckBox)GridView2.Rows[i].FindControl("chkselect");
      if(chkSel.Checked==true)
          GridView2.Rows.RemoveAt(i);
    }

The error is



'System.Web.UI.WebControls.GridViewRowCollection' does not contain a definition for 'RemoveAt' and no extension method 'RemoveAt' accepting a first argument of type 'System.Web.UI.WebControls.GridViewRowCollection' could be found (are you missing a using directive or an assembly reference?)