Server Error in '/' Application.

Input string was not in a correct format.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.FormatException: Input string was not in a correct format.

Source Error:


Line 25:     private void GenerateContents()
Line 26:     {
Line 27:         ENT_Album entAlbum = new BLL_Album() { AlbumID = long.Parse(Request.QueryString["id"]) }.GetAlbumByAlbumID();
Line 28:         if (entAlbum == null || !entAlbum.IsActive) { Response.Redirect(ZConfiguration.AppSettings.StartupWebPage); }
Line 29:         lblAlbumTitle.Text = entAlbum.Title;

Source File: c:\hostingspaces\afarineshr.ir\afarineshr.ir\wwwroot\Gallery.aspx.cs    Line: 27

Stack Trace:


[FormatException: Input string was not in a correct format.]
   System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) +13033687
   System.Number.ParseInt64(String value, NumberStyles options, NumberFormatInfo numfmt) +135
   System.Int64.Parse(String s) +26
   Gallery.GenerateContents() in c:\hostingspaces\afarineshr.ir\afarineshr.ir\wwwroot\Gallery.aspx.cs:27
   Gallery.Page_Load(Object sender, EventArgs e) in c:\hostingspaces\afarineshr.ir\afarineshr.ir\wwwroot\Gallery.aspx.cs:16
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4690.0