我想給出選項上傳多個文件,然後下載它。我創建的鏈接按鈕動態,如:點擊事件動態創建的鏈接按鈕不起作用
private void AddLinkButtons()
{
string[] fileNames = (string[])Session["fileNames"];
string[] fileUrls = (string[])Session["fileUrls"];
if (fileNames != null)
{
for (int i = 0; i < fileUrls.Length - 1; i++)
{
LinkButton lb = new LinkButton();
phLinkButtons.Controls.Add(lb);
lb.Text = fileNames[i];
lb.CommandName = "url";
lb.CommandArgument = fileUrls[i];
lb.ID = "lbFile" + i;
//lb.Click +=this.DownloadFile;
lb.Attributes.Add("runat", "server");
lb.Click += new EventHandler(this.DownloadFile);
////lb.Command += new CommandEventHandler(DownloadFile);
phLinkButtons.Controls.Add(lb);
phLinkButtons.Controls.Add(new LiteralControl("<br>"));
}
}
而且我DownloadFile事件是:
protected void DownloadFile(object sender, EventArgs e)
{
LinkButton lb = (LinkButton)sender;
string url = lb.CommandArgument;
System.IO.FileInfo file = new System.IO.FileInfo(url);
if (file.Exists)
{
try
{
Response.Clear();
Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);
Response.AddHeader("Content-Length", file.Length.ToString());
Response.ContentType = "application/octet-stream";
Response.WriteFile(file.FullName);
Response.End();
}
catch (Exception ex)
{
}
}
else
{
Response.Write("This file does not exist.");
}
}
我收到鏈接按鈕在屏幕上但點擊後DownloadFile事件不會被調用。我嘗試了所有被評論的選項,但它不起作用。代碼有什麼問題?
有什麼問題嗎? 'LinkButton lb = new LinkButton();磅=(LinkButton)lbTest;' – Steve 2012-04-06 10:16:45
這是錯誤的...我刪除它,仍然無法正常工作。 – user1181942 2012-04-06 10:25:32
什麼是phLinkButtons? – 2012-04-06 10:27:08