ASP.NET对大文件上传的解决方案

<radU:RadProgressManager ID="Radprogressmanager1" Width="100%" runat="server" />
<radU:RadProgressArea ID="progressArea1" Width="100%" runat="server">
</radU:RadProgressArea>

<%@ Register TagPrefix="telerik" Namespace="Telerik.QuickStart" Assembly="Telerik.QuickStart" %>
<%@ Register TagPrefix="radU" Namespace="Telerik.WebControls" Assembly="RadUpload.Net2" %>

<httpRuntime executionTimeout="3600" maxRequestLength="2097151" ></httpRuntime>
<httpModules>
　　<add name="RadUploadModule" type="Telerik.WebControls.RadUploadHttpModule, RadUpload.Net2"/>
</httpModules>
<httpHandlers>
　　<add verb="" path="Telerik.RadUploadProgressHandler.aspx" type="Telerik.WebControls.RadUploadProgressHandler, RadUpload.Net2"></add>
</httpHandlers>

// 检查文件
if (RadUploadContext.Current == null) { return; }
if (RadUploadContext.Current.UploadedFiles.Count <= 0) 
{
　　this.Page.ClientScript.RegisterStartupScript(this.Page.GetType(), "MsgBox", "<script>alert('请选择上传文件 ！')</script>"); 
　　return;
}
if (RadUploadContext.Current.UploadedFiles[0].ContentLength >= 2147483647)
{
　　this.Page.ClientScript.RegisterStartupScript(this.Page.GetType(), "MsgBox", "<script>alert('上传的文件不得超过 2GB ！')</script>");
　　return;
}
UploadedFile file = RadUploadContext.Current.UploadedFiles[0];
string fileName = Path.GetFileName(file.FileName);
string virtualPath = System.IO.Path.Combine("~/save", fileName);
string savePath = this.MapPath(virtualPath);
file.SaveAs(savePath, true);