How can we get static access-token from facebook ?

Question

I want to share a video in facebook through c#.the following code is working fine.But the access token which i used here is dynamic.so i need a static access token.

 

string UserAccessToken = "EAACEdEose0cBAPmGpJXPITMiL*************************Iogiku8kH9QgzC3pMbmmAca4ORDyVSPvc0sZAItmcKpInK3MjSJ8coNthVXjKGSq71JckcQkBDpm7IVwAtJzgz8t4g0abc6XSLgLZAhPbyx106YUcdfa0pd6TYxhQyJatZA5na7krMZD";

string message = "having fun";

string title = "hi";

string filePath = @"F:\Songs\funnybabyclip1.mp4";

if (!string.IsNullOrEmpty(UserAccessToken))

{

 string FileUploadUrl = string.Format("https://graph-video.facebook.com/me/videos?title={0}&description={1}&access_token={2}", HttpUtility.UrlEncode(message), HttpUtility.UrlEncode(title), UserAccessToken);

WebClient uploadClient = new WebClient();

 byte[] returnBytes = uploadClient.UploadFile(FileUploadUrl, filePath);

}