Asp.Net 之 基本控件FileUpload上传控件

<asp:FileUpload ID="FileUpload" runat="server" />
<asp:Button ID="BtnUp" runat="server" onclick="BtnUp_Click" Text="上 传" />
<asp:Label ID="LabMsg" runat="server"></asp:Label>

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace docnet
{
public partial class up : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{       }

protected void BtnUp_Click(object sender, EventArgs e)
{
if (FileUpload.HasFile)
{
string savePath = Server.MapPath("~/upload/");//指定上传文件在服务器上的保存路径

//检查服务器上是否存在这个物理路径，如果不存在则创建
if (!System.IO.Directory.Exists(savePath))
{
System.IO.Directory.CreateDirectory(savePath);
}

savePath = savePath + "\\" + FileUpload.FileName;
FileUpload.SaveAs(savePath);
LabMsg.Text = string.Format("<a href='upload/{0}'>upload/{0}</a>", FileUpload.FileName);
}
else
{
LabMsg.Text = "你还没有选择上传文件!";
}
}
}

}