hMailServer.Administrator.Dialogs.formMessageViewer.formMessageViewer_Shown C# (CSharp) Method

        private void formMessageViewer_Shown(object sender, EventArgs e)
        {
            this.Cursor = Cursors.WaitCursor;

             textFile.Text = _filename;

             try
             {
            string fileContent = System.IO.File.ReadAllText(_filename);
            textMessage.Text = fileContent;

             }
             catch (Exception ex)
             {
            textMessage.Text = ex.Message;
             }

             this.Cursor = Cursors.Default;
        }