视频上传

protected void btnUpload_Click(object sender, EventArgs e)
    {
        //判断是否上传了文件
        if (fileUpload.HasFile)
        {
            //指定上传文件在服务器上的保存路径
            string savePath = Server.MapPath("~/upload/");
            //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))
            {
                //需要注意的是，需要对这个物理路径有足够的权限，否则会报错
                //另外，这个路径应该是在网站之下，而将网站部署在C盘却把上传文件保存在D盘
                System.IO.Directory.CreateDirectory(savePath);
            }
            savePath = savePath + "\\" + fileUpload.FileName;
            fileUpload.SaveAs(savePath);//保存文件
            //不过需要注意的是，在客户端访问却需要指定的是URL地址，而不是在服务器上的物理地址
            literal.Text = string.Format("<a href='upload/{0}'>upload/{0}</a>", fileUpload.FileName);
        }
    }
或：
public partial class admin_UpSoft : System.Web.UI.Page
{
    CAN can = new CAN();
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void btnUpdate_Click(object sender, EventArgs e)
    {
        string filepath = "", fileExtName = "", mFileName,mPath;
        if ("" != this.File2.PostedFile.FileName)
        {
         filepath=File2 .PostedFile.FileName;
         fileExtName= filepath.Substring(filepath.LastIndexOf(".")+1);
            try
            {
             mPath=Server.MapPath("..\\FileDown\\");
                mFileName=filepath .Substring(filepath.LastIndexOf("\\")+1);
                File2.PostedFile .SaveAs(mPath+mFileName);
                TextBox2 .Text ="FileDown\\"+mFileName;
                File2.Visible=false;
                TextBox2.Visible=true;
            }
            catch(Exception err)
            {
                Response.Write(err.ToString());
           
            }
        }
        can.ExecSqlCom("Insert into Soft(SoftName,DownLoad) values('" + TextBox1.Text + "','" + TextBox2.Text + "')");
        Response.Write("<script language=javascript>alert('上传成功!');location='javascript:history.go(-1)'</script>");
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        Page.Response.Redirect("main.aspx");

    } 

上传图片： 

private string UploadPic()
        {
            if(txtPictureUploader.PostedFile.FileName.Length ==0)
            {
                return string.Empty ;
            }
                
            string fileName = Guid.NewGuid().ToString();
            int position = txtPictureUploader.PostedFile.FileName.LastIndexOf(".");
            if(position == -1)
            {
                throw new Exception("上传的文件格式不正确！");
            }
            string extensionName = txtPictureUploader.PostedFile.FileName.Substring(position).ToLower();
            if(extensionName == ".png"||extensionName == ".jpg"||extensionName == ".gif"||extensionName == ".jpeg"||extensionName == ".bmp")
            {
                string filePath=ConfigurationSettings.AppSettings["UploadVideoImagePath"];
                fileName = fileName+extensionName;
                if(filePath==null)
                    filePath ="/Images/";
            
                txtPictureUploader.PostedFile .SaveAs(Server.MapPath( filePath)+ fileName) ;
                return fileName;
            }
            else
            {
                throw new Exception("上传的文件格式不正确！");
            }
        }

 上传视频：  

private string UploadVideo()
        {
            if(txtVideoFileUploader.FileName.Length ==0)
            {
                return string.Empty ;
            }
                
            string fileName = Guid.NewGuid().ToString();
            int position = txtVideoFileUploader.FileName.LastIndexOf(".");
            if(position == -1)
            {
                throw new Exception("上传的文件格式不正确！");
            }
            string extensionName = txtVideoFileUploader.FileName.Substring(position);
            string filePath=ConfigurationSettings.AppSettings["UploadVideosPath"];
            fileName = fileName+extensionName;
            if(filePath==null)
                filePath ="/Videos/";
            txtVideoFileUploader.MoveTo(Server.MapPath(filePath+fileName),MoveToOptions.Overwrite);
            return fileName;

}