asp.net 实现文件上传-优快云博客

前端代码：

<asp:FileUpload ID="UpLoad" runat="server" />
<asp:Button ID="BtnUpload" runat="server" Text="提交" OnClick="BtnUpload_Click" />

后端代码：

protected void BtnUpload_Click(object sender, EventArgs e)
    {
        //取文件本地路径
        string fullFileName = this.UpLoad.PostedFile.FileName;
        //截取出文件名
        string fileName = fullFileName.Substring(fullFileName.LastIndexOf("\\") + 1);
        //限定上传文件的格式
        string type = fullFileName.Substring(fullFileName.LastIndexOf(".") + 1);
        if (type == "doc" || type=="docx")
        {
            //将文件保存在服务器中根目录下的files文件夹中
            string saveFileName = Server.MapPath("/files") + "\\" + fileName;
            UpLoad.PostedFile.SaveAs(saveFileName);
            Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer>alert('文件上传成功！');</script>");

           
        }
        else
        {
            Page.ClientScript.RegisterStartupScript(Page.GetType(), "message", "<script language='javascript' defer>alert('请选择正确的格式');</script>");
        }
    }