GridView中的数据导出到Excel
将页面中的数据绑定控件(如GridView、ListView等)中的数据导出到Excel中是个很常用的功能,Google相关资料后总结如下:
一、自定义一个方法:ToExcel(Control ctl, string FileName)
这个方法就是将数据绑定控件中的数据导出到Excel。
private void ToExcel(Control ctl, string FileName) { HttpContext.Current.Response.Charset = "UTF-8"; HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8; HttpContext.Current.Response.ContentType = "application/ms-excel"; HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + "" + FileName); ctl.Page.EnableViewState = false; System.IO.StringWriter tw = new System.IO.StringWriter(); HtmlTextWriter hw = new HtmlTextWriter(tw); ctl.RenderControl(hw); HttpContext.Current.Response.Write(tw.ToString()); HttpContext.Current.Response.End(); }
二、双击LinkButton,在按钮中写入如下代码:
protected void LinkButton1_Click(object sender, EventArgs e) { GridView1.AllowPaging = false; GridView1.AllowSorting = false; bang(); ToExcel(GridView1, "data.xls"); GridView1.AllowPaging = true; GridView1.AllowSorting = true; bang(); }
三、当然了,还有自定义的绑定方法bang()。写这个bang()就不用在绑定数据时写一大堆的代码了。bang()代码略。
其实将数据导出为Excel应该是很常用的一个功能,为避免在不同的页面中都写一遍代码,我们可以将其做成一个类模块,保存在App_Code文件夹中,这样需要用到的时候就可以直接引用了。
App_Code文件: using System; using System.Collections.Generic; using System.Linq; using System.Web; // using System.Web.UI; public class toExcel { public toExcel() { // //TODO: 在此处添加构造函数逻辑 // } public Control ctl; public string FileName; public void exportExcel(Control ctl, string FileName) { HttpContext.Current.Response.Charset = "UTF-8"; HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8; HttpContext.Current.Response.ContentType = "application/ms-excel"; HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + "" + FileName); ctl.Page.EnableViewState = false; System.IO.StringWriter tw = new System.IO.StringWriter(); HtmlTextWriter hw = new HtmlTextWriter(tw); ctl.RenderControl(hw); HttpContext.Current.Response.Write(tw.ToString()); HttpContext.Current.Response.End(); } }
然后在CS文件中引用类模块:
protected void LinkButton1_Click(object sender, EventArgs e) { GridView1.AllowPaging = false;//取消分页 GridView1.AllowSorting = false;//取消排序 bind(); toExcel Export=new toExcel(); Control ctl = Export.ctl = GridView1; string FileName = Export.FileName = "我的表格.xls"; Export.exportExcel(ctl, FileName); GridView1.AllowPaging = true;//恢复分页 GridView1.AllowSorting = true;//恢复排序 bind(); }
注意!很容易出现这个错误提示:
类型“GridView”的控件“ctl00_ContentPlaceHolder1_GridView1”必须放在具有 runat=server 的窗体标记内
如果是这样,需要重载一个方法(方法中什么都不写即可。):
public override void VerifyRenderingInServerForm(Control control) { //base.VerifyRenderingInServerForm(control); }
这样就不会有错误了。
运用类模块后,在任何需要导出到excel的页面中只需要简单的引用就可以了,主要就是:
toExcel Export=new toExcel(); Control ctl = Export.ctl = GridView1; string FileName = Export.FileName = "我的表格.xls"; Export.exportExcel(ctl, FileName);
另一篇导出到Excel的文章:http://www.cnblogs.com/ibgo/p/3531799.html