AsyncFileUpload控件，就是用来对文件进行异步上传的，示例看这里：http://www.asp.net/ajax/ajaxcontroltoolkit/Samples/AsyncFileUpload/AsyncFileUpload.aspx。有需要异步上传文件的同学要看这里了，具体用法如下：
前台代码：
<
ajaxToolkit:AsyncFileUpload
OnClientUploadError
="uploadError"
OnClientUploadComplete
="uploadComplete"
runat ="server" ID ="AsyncFileUpload1" Width ="400px" UploaderStyle ="Modern"
UploadingBackColor ="#CCFFFF"
onuploadedcomplete ="AsyncFileUpload1_UploadedComplete" />
runat ="server" ID ="AsyncFileUpload1" Width ="400px" UploaderStyle ="Modern"
UploadingBackColor ="#CCFFFF"
onuploadedcomplete ="AsyncFileUpload1_UploadedComplete" />
说说属性吧，
OnClientUploadError：客户端错误处理方法
OnClientUploadComplete：客户端上传完成事件
UploaderStyle：控件的风格，有传统和现代两种
OnUploadedComplete：服务器端上传完成处理事件，在这个事件中可以调用SaveAs方法，指定文件的存储位置和名称等。
前台js代码：
function
uploadComplete(sender, args) {
alert( " 上传成功 " );
}
function uploadError(sender, args) {
alert( " 上传错误 " );
}
alert( " 上传成功 " );
}
function uploadError(sender, args) {
alert( " 上传错误 " );
}
后台代码：
protected
void
AsyncFileUpload1_UploadedComplete(
object
sender, AjaxControlToolkit.AsyncFileUploadEventArgs e)
{
AjaxControlToolkit.AsyncFileUpload fileUploader = sender as AjaxControlToolkit.AsyncFileUpload;
if (fileUploader != null && fileUploader.HasFile)
{
fileUploader.SaveAs(Server.MapPath( " /Resource/UploadFile/ " + fileUploader.FileName));
}
}
{
AjaxControlToolkit.AsyncFileUpload fileUploader = sender as AjaxControlToolkit.AsyncFileUpload;
if (fileUploader != null && fileUploader.HasFile)
{
fileUploader.SaveAs(Server.MapPath( " /Resource/UploadFile/ " + fileUploader.FileName));
}
}
本文转自齐师傅博客园博客，原文链接：http://www.cnblogs.com/youring2/archive/2011/04/21/2024314.html，如需转载请自行联系原作者
