Errors List Window

[scottcantwell]

I am trying to get the Errors List window but I am running into an issue. The error window is coming back as null.

internal sealed class ErrorVisualizerCommand
{
     /// <summary>
    /// VS Package that provides this command, not null.
    /// </summary>
    private readonly AsyncPackage package;

          var errorList = package.GetServiceAsync(typeof(SVsErrorList)) as IVsTaskList2;
 
           if (errorList != null)
            {
                IVsEnumTaskItems enumerator;
              
                errorList.EnumSelectedItems(out enumerator);
              
                var arr = new IVsTaskItem[1];

                while (enumerator.Next(1, arr, null) == 0)
                {
                   
                    string description;
                    arr[0].get_Text(out description);

                    string fileName;
                    arr[0].Document(out fileName);

                    int lineNumber;
                    arr[0].Line(out lineNumber);

                    vsErrorList.Add(new Item()
                    {
                        Description = description,
                       // Line = lineNumber,
                      // ErrorItem = arr[0],
                    });
                }


            }