gride view column hide and pagging apply both apply to generate error

Note:: It display an error when Allow paging is true and page size is any. In normal case when Allow Paging is false, there is no error.

My Code of Pageindexing::

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        GridView1.PageIndex = e.NewPageIndex;
        fillgrid(); // function to bind data
    }

I am using below code to hide a column in Gridview.

My code::

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

{

e.Row.Cells[4].Visible =false;//error generated on this line

}

Error::
Specified argument was out of the range of valid values.
Parameter name: index

Please help me..

Tags: ASP.NET