problem in GridView

[thiagarajanrsbe]

protected void gridReport_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        try
        {
            for (int i = 0; i < gridReport.Columns.Count; i++)
            {
                DataControlFieldCell cell = gridReport.Rows[e.RowIndex].Cells[i] as DataControlFieldCell;
                gridReport.Columns[i].ExtractValuesFromCell(e.NewValues, cell, DataControlRowState.Edit, true);
            }
 
            foreach (string key in e.NewValues.Keys)
            {
                   gridReport.Rows[e.RowIndex][key] = e.NewValues[key];
 
 
            }
 
            gridReport.EditIndex = -1;
            gridReport.DataBind();
        }
        catch (NullReferenceException ex)
        {
            Response.Write(ex.ToString());
        }
 
    }
 

how to solve the following problem.....please send me as a code....

Note:

I got the following Error: Cannot apply indexing with [] to an expression of type 'System.Web.UI.WebControls.GridView

[RedSon]

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