使用GridView和文件傳輸

我需要在GridView的ItemCommand_click事件的RunTime期間生成一個Excel工作表，然後傳輸該文件，然後重新綁定GridView和狀態更改。使用GridView和文件傳輸

當我們通過文件傳輸重定向響應時，如何更新GridView？

2009-02-24 Novice

我正在尋找在行上選定的索引更改上非常類似的東西，以將報告服務報告輸出爲PDF。我只能通過response.redirect來處理文件輸出的另一個頁面。看起來你的問題真的變成了在狀態改變之後重新綁定網格，如果你做了response.redirect，你不能碰你的網格......

看看這段代碼。我發現它在encosia.com。它看起來像你可能能夠使用iFrame輸出，然後你可以使用JavaScript調用回發頁面來重新綁定網格。

<html> 
<body> 
<form id="form1" runat="server"> 
<asp:ScriptManager runat="server" /> 
<script language="javascript"> 
    // Get a PageRequestManager reference. 
    var prm = Sys.WebForms.PageRequestManager.getInstance(); 

    // Hook the _initializeRequest event and add our own handler. 
    prm.add_initializeRequest(InitializeRequest); 

    function InitializeRequest(sender, args) 
    { 
    // Check to be sure this async postback is actually 
    // requesting the file download. 
    if (sender._postBackSettings.sourceElement.id == "DownloadFile") 
    { 
     // Create an IFRAME. 
     var iframe = document.createElement("iframe"); 

     // Get the desired region from the dropdown. 
     var region = $get("Region").value; 

     // Point the IFRAME to GenerateFile, with the 
     // desired region as a querystring argument. 
     iframe.src = "GenerateFile.aspx?region=" + region; 

     // This makes the IFRAME invisible to the user. 
     iframe.style.display = "none"; 

     // Add the IFRAME to the page. This will trigger 
     // a request to GenerateFile now. 
     document.body.appendChild(iframe); 
    } 
    } 
</script> 
<asp:UpdatePanel runat="server"> 
    <ContentTemplate> 
    <asp:DropDownList runat="server" ID="Region"> 
     <asp:ListItem Value="N">North Region</asp:ListItem> 
     <asp:ListItem Value="W">West Region</asp:ListItem> 
     <asp:ListItem Value="SE">Southeast Region</asp:ListItem> 
    </asp:DropDownList> 
    <asp:Button runat="server" ID="DownloadFile" Text="Generate Report" /> 
    </ContentTemplate> 
</asp:UpdatePanel> 
</form> 
</body> 
</html>

處理該下載頁面...

protected void Page_Load(object sender, EventArgs e) 
{ 
    string FileResponse; 
    string Region = Request.QueryString["Region"]; 

    // Code here to fill FileResponse with the 
    // appropriate data based on the selected Region. 

    Response.AddHeader("Content-disposition", "attachment; filename=report.csv"); 
    Response.ContentType = "application/octet-stream"; 
    Response.Write(FileResponse); 
    Response.End(); 
}

來源

2009-02-24 16:20:30 RSolberg

邏輯lloks好......會嘗試這一個 BTW我想的，而創造了文件處理的的.aspx，我們可以去.ashx（HTTP處理程序）; wat說？ – Novice 2009-02-24 22:11:50

使用GridView和文件傳輸

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