c# - Issue of addition of blank row in gridview -


i have fetched data db table, bound gridview , export data gridview excel. works fine.

but when added row @ top of gridview in databound event using below code:

protected void gvreports_databound(object sender, eventargs e) {     if (gvreports.rows.count > 0)     {         gridviewrow row = new gridviewrow(0, 0, datacontrolrowtype.header, datacontrolrowstate.normal);          int count = gvreports.headerrow.cells.count;         tableheadercell cell = new tableheadercell();         cell.borderwidth = 0;         cell.text = "commodity " + ddlcommmfarrival.selecteditem.text;         cell.columnspan = count - 2;         row.controls.add(cell);         row.backcolor = colortranslator.fromhtml("#f5fafd");         gvreports.headerrow.parent.controls.addat(0, row);     } }

code export gridview excel:

protected void btnexport_click(object sender, eventargs e) {     (int = 0; < gvreports.rows.count; i++)     {         (int j = 0; j < gvreports.rows[i].cells.count; j++)         {             if (gvreports.rows[i].cells[j].text == "na")             {                 gvreports.rows[i].cells[j].horizontalalign = horizontalalign.right;             }         }     }     gvreports.headerrow.cells[1].visible = false;     gvreports.headerrow.cells[2].visible = false;     string filename = string.empty;     int ddlselect = convert.toint32(ddlcommmfarrival.selectedvalue);     if (ddlselect == 1)     {         filename = "marketfee" + datetime.now.tostring().replace("/", "").replace(":", "").replace(" ", "") + "";     }     else if (ddlselect == 2)     {         filename = "commodity arrival" + datetime.now.tostring().replace("/", "").replace(":", "").replace(" ", "") + "";     }      //export gridview data ms excel     blexporttoexcel blexport = new blexporttoexcel();     //export gridview data ms excel     blexport.exportgridviewtoexcel(gvreports, this, filename); }      public void exportgridviewtoexcel(gridview grv, system.web.ui.page pg, string filename)     {         grv.allowpaging = false;          pg.response.clear();         pg.response.addheader("content-disposition", "attachment; filename=" + filename + ".xls");         pg.response.charset = "";         pg.response.contenttype = "application/vnd.xls";          system.io.stringwriter stringwrite = new system.io.stringwriter();         system.web.ui.htmltextwriter htmlwrite = new htmltextwriter(stringwrite);         grv.rendercontrol(htmlwrite);         pg.response.write(stringwrite.tostring());         pg.response.end();          grv.allowpaging = true;     }

then adds blank row @ position 0 in excel (export data gridview excel) , truncates last row gridview. knows issue?

try moving headerrow addition logic out of databound , rowcreated. add gridview declaration:

onrowcreated="gvreports_rowcreated"

and rowcreated (note datacontrolrowstate.insert):

protected void gvreports_rowcreated(object sender, gridviewroweventargs e) {     if (e.row.rowtype == datacontrolrowtype.header)     {         gridviewrow row = new gridviewrow(0, 0, datacontrolrowtype.header, datacontrolrowstate.insert);          int count = e.row.cells.count;         tableheadercell cell = new tableheadercell();         cell.borderwidth = 0;         cell.text = "blah";         cell.columnspan = count - 2;         row.controls.add(cell);         row.backcolor = colortranslator.fromhtml("#f5fafd");         gvreports.controls[0].controls.addat(0, row);     } }

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