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GridViewRow change after postback

Posted By:      Posted Date: August 25, 2010    Points: 0   Category :ASP.Net

 I add gridview row dynamically like that; After page postback some gridrow change and not visible. How can solve ? thanks.

protected void grv_RowDataBound(object sender, GridViewRowEventArgs e)
        GridViewRow gvr = e.Row;

        if (gvr.RowType == DataControlRowType.DataRow)
            DataRowView drv = gvr.DataItem as DataRowView;

            string kategoriAd = drv["NAME"].ToString();

            if (!kategoriAd.Equals(m_kategoriAd))
                GridViewRow row = new GridViewRow(0, -1, DataControlRowType.Header, DataControlRowState.Normal);
                TableHeaderCell cell = new TableHeaderCell();
                // TableCell cell = new TableCell();

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