/// <summary>
        /// Handles the Click event of the btn_ProjectExport control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        /// Erstellt von Joshua Frey, am 28.01.2016
        private void btn_ProjectExport_Click(object sender, EventArgs e)
        {
            Project selectedProject = (Project)comboBox_SelectProject.SelectedItem;

            if (selectedProject == null)
            {
                MessageBox.Show("Bitte wählen Sie erst ein bestehendes Project aus dem Dropdownfeld aus.");
            }
            else
            {
                int    projectId           = selectedProject.Project_Id;
                string folderPathForExport = "";
                FolderBrowserDialog folderBrowserDialogForExportFolder = new FolderBrowserDialog();

                if (folderBrowserDialogForExportFolder.ShowDialog() == DialogResult.OK)
                {
                    folderPathForExport = folderBrowserDialogForExportFolder.SelectedPath;
                }

                if (folderPathForExport != "" && projectId != 0)
                {
                    try
                    {
                        ProjectExporter projExporter = new ProjectExporter(projectId, folderPathForExport);
                        projExporter.ExportWholeProject();
                    }
                    catch (Exception exception)
                    {
                        MessageBox.Show(exception.Message);
                    }
                }
            }
            RefreshDropDown();
        }