protected void GVbiangeng_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if ((e.Row.RowState == (DataControlRowState.Edit | DataControlRowState.Alternate)) || (e.Row.RowState == DataControlRowState.Edit))
        {
            TextBox curText;
            for (int i = 0; i < 3; i++)
            {
                curText = (TextBox)e.Row.Cells[i].Controls[0];
                curText.TextMode = TextBoxMode.MultiLine;
                //curText.Width = Unit.Pixel(600);
                //curText.Height = Unit.Pixel(100);
                curText.Attributes.Add("style ", "width:100%;overflow:visible ");
            }
        }
    }