首先,建立基本的頁面default.aspx
<form id="form1" runat="server"> <div> <asp:GridView ID="GridView1" runat="server"> </asp:GridView> </div> <br/> <asp:Button ID="BtnExport" runat="server" OnClick="BtnExport_Click" Text="Export to Excel" /> </form> |
在default.aspx.cs中,寫入如下代碼:
protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { BindData(); } } private void BindData() { string query = "SELECT * FROM customers"; SqlConnection myConnection = new SqlConnection(ConnectionString); SqlDataAdapter ad = new SqlDataAdapter(query, myConnection); DataSet ds = new DataSet(); ad.Fill(ds, "customers"); GridView1.DataSource = ds; GridView1.DataBind(); } public override void VerifyRenderingInServerForm(Control control) { // Confirms that an HtmlForm control is rendered for } protected void Button1_Click(object sender, EventArgs e) { Response.Clear(); Response.AddHeader("content-disposition","attachment;filename=FileName.xls"); Response.Charset = "gb2312"; Response.ContentType = "application/vnd.xls"; System.IO.StringWriter stringWrite = new System.IO.StringWriter(); System.Web.UI.HtmlTextWriter htmlWrite =new HtmlTextWriter(stringWrite); GridView1.AllowPaging = false; BindData(); GridView1.RenderControl(htmlWrite); Response.Write(stringWrite.ToString()); Response.End(); GridView1.AllowPaging = true; BindData(); } protected void paging(object sender,GridViewPageEventArgs e) { GridView1.PageIndex = e.NewPageIndex; BindData(); } |
在上面的代碼中,我們首先將gridview綁定到指定的數據源中,然後在button1的按鈕(用來做導出到EXCEL的)的事件中,寫入相關的代碼。這裏使用Response.AddHeader("content-disposition","attachment;filename=exporttoexcel.xls");中的filename來指定將要導出的excel的文件名,這裏是exporttoexcel.xls。要注意的是,由於gridview的內容可能是分頁顯示的,因此,這裏在每次導出excel時,先將gridview的allowpaging屬性設置爲false,然後通過頁面流的方式導出當前頁的gridview到excel中,最後再重新設置其allowpaging屬性。另外要注意的是,要寫一個空的VerifyRenderingInServerForm方法(必須寫),以確認在運行時爲指定的ASP.NET 服務器控件呈現HtmlForm 控件。