在gridview中添加空行的问题

我已经从数据库表中获取数据，将其绑定到gridview，然后将数据从gridview导出到excel。 它工作正常。

但是当我使用下面的代码在数据绑定事件的gridview的顶部添加一行：

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); } } 

将Gridview导出到Excel的代码：

 protected void btnExport_Click(object sender, EventArgs e) { for (int i = 0; i < gvReports.Rows.Count; i++) { for (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 into MS Excel blExportToExcel blExport = new blExportToExcel(); //Export gridview data into 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; } 

然后在位置0和excel中添加一个空白行（从gridview将数据导出到excel），并截取gridview中的最后一行。 任何人都知道是什么问题？

Answer 1

尝试将您的HeaderRow添加逻辑从DataBound移出并放入RowCreated 。 将此添加到GridView声明中：

 OnRowCreated="gvReports_RowCreated" 

然后这是RowCreated （注意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); } }