将大数据导出到Excel

在我的GridView中，我有30000条logging，而我出口到Excel，它只出口到近12000条logging，以下我的代码导出为Excel。

GridView1.AllowPaging = false; DataTable dt = (DataTable)Session["tabledata"]; GridView1.DataSource = dt; GridView1.DataBind(); Response.ClearContent(); Response.Buffer = true; Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "Customers.xls")); Response.ContentType = "application/ms-excel"; StringWriter sw = new StringWriter(); HtmlTextWriter htw = new HtmlTextWriter(sw); //Change the Header Row back to white color GridView1.HeaderRow.Style.Add("background-color", "Red"); //Applying stlye to gridview header cells for (int i = 0; i < GridView1.HeaderRow.Cells.Count; i++) { GridView1.HeaderRow.Cells[i].Style.Add("background-color", "Red"); } GridView1.RenderControl(htw); Response.Write(sw.ToString()); Response.End(); 

在这里，我可以如何导出所有（30K）gridviewloggingexcel？

Answer 1

以下是将您的网格数据保存到Excel文件的示例代码

  protected void ExportToExcel(object sender, EventArgs e) { Response.Clear(); Response.Buffer = true; Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.xls"); Response.Charset = ""; Response.ContentType = "application/vnd.ms-excel"; using (StringWriter sw = new StringWriter()) { HtmlTextWriter hw = new HtmlTextWriter(sw); //To Export all pages GridView1.AllowPaging = false; this.BindGrid(); GridView1.HeaderRow.BackColor = Color.White; foreach (TableCell cell in GridView1.HeaderRow.Cells) { cell.BackColor = GridView1.HeaderStyle.BackColor; } foreach (GridViewRow row in GridView1.Rows) { row.BackColor = Color.White; foreach (TableCell cell in row.Cells) { if (row.RowIndex % 2 == 0) { cell.BackColor = GridView1.AlternatingRowStyle.BackColor; } else { cell.BackColor = GridView1.RowStyle.BackColor; } cell.CssClass = "textmode"; } } GridView1.RenderControl(hw); //style to format numbers to string string style = @"<style> .textmode { } </style>"; Response.Write(style); Response.Output.Write(sw.ToString()); Response.Flush(); Response.End(); } } 

Answer 2

我build议你看看OpenXmlWriter类来导出大量的数据到Excel（这应该防止caching问题）。