protected void btnAddVideo_Click(object sender, EventArgs e) { // Check if the validation passed successfully if (IsValid == false) { return; } try { // convert from Youtube link to the currect link (https://www.youtube.com/embed/'ID of youtube video') string correctLink = "https://www.youtube.com/embed/" + txtVideoLink.Text.Substring(txtVideoLink.Text.IndexOf("v=") + 2); //Add the video to the Database. videos.AddVideo(txtVideoName.Text, correctLink); //Adding the video to the Cache, checking before if the cache exists! if (Cache["Videos"] != null) { List <ShowVideoControl> list = Cache["Videos"] as List <ShowVideoControl>; ShowVideoControl videoControl = LoadControl("ShowVideoControl.ascx") as ShowVideoControl; // setting VideoID by taking the last VideoID from All // videos in the "list" collection and adding +1 because it a new video videoControl.VideoID = list.Last().VideoID + 1; videoControl.VideoName = txtVideoName.Text; videoControl.VideoLink = correctLink; list.Add(videoControl); } // setting successfully message. SetMessageState(State.Success, "הסרטון " + txtVideoName.Text + " נוסף בהצלחה!"); } catch (Exception ex) { // setting error message. SetMessageState(State.Danger, ex.Message); } }