ASP.NET GridView匯出資料到Excel
首先要把GridView控制元件放到panel中
<asp:Panel ID="Panel1" runat="server" Width="100%">
<asp:GridView ID="gridview1" runat="server" Width="100%" CellPadding="4" ForeColor="#333333"
AutoGenerateColumns="False" AllowPaging="True" AllowSorting="True" OnRowDeleting="gridview1_RowDeleting"
OnRowEditing="gridview1_RowEditing" DataKeyNames="sno" OnDataBound="gridview1_DataBound"
Font-Size="14px">
<Columns>
<asp:HyperLinkField DataTextField="sno" HeaderText="學號" DataNavigateUrlFields="sno"
DataNavigateUrlFormatString="StudentInfo.aspx?id={0}" />
<asp:BoundField DataField="sname" HeaderText="姓名" />
<asp:BoundField DataField="ssex" HeaderText="性別" />
<asp:BoundField DataField="snational" HeaderText="民族" />
<%--<asp:BoundField DataField="sdegree" HeaderText="學歷" />--%>
<asp:BoundField DataField="spoliticalFace" HeaderText="整治面貌" />
<asp:BoundField DataField="sphone" HeaderText="電話" />
<asp:BoundField DataField="semail" HeaderText="E-mail" />
<asp:BoundField DataField="saddress" HeaderText="住址" />
<asp:BoundField DataField="sidcard" HeaderText="身份證號" />
<asp:CommandField HeaderText="編輯" ShowEditButton="True" ButtonType="Image" EditImageUrl="~/Admin/Images/edit.gif" />
<asp:CommandField HeaderText="刪除" ShowDeleteButton="True" ButtonType="Image" DeleteImageUrl="~/Admin/Images/del.gif" />
</Columns>
<PagerTemplate>//以下為自定義分頁
<div id="main">
<table>
<tr>
<td style="text-align: left;">
<div id="info">
頁次：<asp:Label ID="lblPageCurrent" runat="server" Text="1" CssClass="txtInfo"></asp:Label>
/<asp:Label ID="lblPageCount" runat="server" Text="1"></asp:Label> 共 <asp:Label
ID="lblPageRow" runat="server" Text="1" CssClass="txtInfo"></asp:Label> 條記錄
</div>
</td>
<td style="text-align: right;">
<div id="page">
<asp:LinkButton ID="btnFirst" runat="server" CssClass="link" CommandName="Pager"
CommandArgument="First" OnCommand="NavigateToPage">[首頁]</asp:LinkButton>
<asp:LinkButton ID="btnPrev" runat="server" CssClass="link" CommandName="Pager" CommandArgument="Prev"
OnCommand="NavigateToPage">[前一頁]</asp:LinkButton>
<asp:LinkButton ID="btnNext" runat="server" CssClass="link" CommandName="Pager" CommandArgument="Next"
OnCommand="NavigateToPage">[下一頁]</asp:LinkButton>
<asp:LinkButton ID="btnLast" runat="server" CssClass="link" CommandName="Pager" CommandArgument="Last"
OnCommand="NavigateToPage">[尾頁]</asp:LinkButton>
</div>
</td>
</tr>
</table>
</div>
</PagerTemplate>
<FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#D1DDF1" ForeColor="#333333" Font-Bold="True" />
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<AlternatingRowStyle BackColor="White" />
<RowStyle BackColor="#EFF3FB" />
<EditRowStyle BackColor="#2461BF" />
</asp:GridView>
</asp:Panel>
再新增一個按鈕，用於觸發匯出事件：
<asp:LinkButton ID="lbtnexcel" runat="server" Text="匯出到Excel" OnClick="lbtnexcel_Click"></asp:LinkButton>
以上為aspx頁面程式碼，後臺程式碼則是：
protected void lbtnexcel_Click(object sender, EventArgs e)
{
gridview1.BottomPagerRow.Visible = false;//匯出到Excel表後，隱藏分頁部分
gridview1.Columns[9].Visible = false;//隱藏“編輯”列
gridview1.Columns[10].Visible = false;//隱藏“刪除”列
gridview1.AllowPaging = false;//取消分頁，便於匯出所有資料，不然只能匯出當前頁面的幾條資料
gridview1.DataSource = ds;//取消分頁後重新繫結資料集,ds為資料集dataset
gridview1.DataBind();
DateTime dt = DateTime.Now;//給匯出後的Excel表命名，結合表的用途以及系統時間來命名
string filename = dt.Year.ToString() + dt.Month.ToString() + dt.Day.ToString() + dt.Hour.ToString() + dt.Minute.ToString() + dt.Second.ToString();
/*如匯出的表中有某些列為編號、身份證號之類的純數字字串，如不進行處理，則匯出的資料會預設為數字，例如原字串"0010"則會變為數字10，字串"1245787888"則會變為科學計數法1.236+E9，這樣便達不到我們想要的結果，所以需要在匯出前對相應列新增格式化的資料型別，以下為格式化為字串型*/
foreach (GridViewRow dg in this.gridview1.Rows)
{
dg.Cells[0].Attributes.Add("style", "vnd.ms-excel.numberformat: @;");
dg.Cells[5].Attributes.Add("style", "vnd.ms-excel.numberformat: @;");
dg.Cells[6].Attributes.Add("style", "vnd.ms-excel.numberformat: @;");
dg.Cells[8].Attributes.Add("style", "vnd.ms-excel.numberformat: @;");
}
Response.Clear();
Response.AddHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode("學生表" + filename, System.Text.Encoding.UTF8) + ".xls");//匯出檔案命名
Response.ContentEncoding = System.Text.Encoding.UTF7;//如果設定為"GB2312"則中文字元可能會亂碼
Response.ContentType = "applicationshlnd.xls";
System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
Panel1.RenderControl(oHtmlTextWriter);//Add the Panel into the output Stream.
Response.Write(oStringWriter.ToString());//Output the stream.
Response.Flush();
Response.End();
}
//過載VerifyRenderingInServerForm方法，否則執行的時候會出現如下錯誤提示：“型別“GridView”的控制元件“GridView1”必須放在具有 runat=server 的窗體標記內”
public override void VerifyRenderingInServerForm(Control control)
{
//override VerifyRenderingInServerForm.
}