How to download files in third party Girdview, and JS display pictures

<summary>

File Download Events

</summary>

<param name= "Sender" ></param>

<param name= "E" ></param>

protected void Grid_oncopyinsertclick (object sender, EventArgs e) {

LinkButton lbut = sender as LinkButton;

string Sellcontractscanid = Lbut.commandname;

String url = "";

String name = "";

foreach (DataRow dr in Griviewtable.rows) {

if (dr["ordinal"]. ToString (). Equals (Sellcontractscanid)) {

url = dr["path"]. ToString ();

Name = dr["file name"]. ToString ();

Break

}             }

if (System.IO.File.Exists (HttpContext.Current.Server.MapPath (URL))) {

Response.Redirect ("Userinfoscandownload.aspx? Filepath= "+ URL +" &filename= "+ name);

}

Else

{BP. Alert ("The file does not exist!") ");

}

BasePage BP = null;

protected void Page_Load (object sender, EventArgs e) {

if (request["FilePath"] = = null)

Return

if (request["FileName"] = = null)

Return

String filerpath = request["FilePath"]. ToString ();

string filename = request["filename"]. ToString ();

if (System.IO.File.Exists (HttpContext.Current.Server.MapPath (Filerpath))) {

Response.ClearHeaders ();

Response.Clear ();

Response.Expires = 0;

Response.Buffer = true;

Response.AddHeader ("Accept-language", "ZH-TW");

String name = System.IO.Path.GetFileName (Filerpath);

System.IO.FileStream files = new FileStream (HttpContext.Current.Server.MapPath (Filerpath), FileMode.Open,                 FileAccess.Read, FileShare.Read); byte[] bytefile = null;

if (Files. Length = = 0) {

Bytefile = new Byte[1];

}

Else

{

Bytefile = new Byte[files. Length];

}

Files. Read (bytefile, 0, (int) bytefile.length);

Files. Close ();

Response.AddHeader ("Content-disposition", "attachment;filename=" + httputility.urlencode (filename,                 SYSTEM.TEXT.ENCODING.UTF8)); Response.ContentType = "APPLICATION/OCTET-STREAM;CHARSET=GBK";

Response.BinaryWrite (Bytefile);

Response.End ();

}

}

How to download files in third party Girdview, and JS display pictures