private void buttonImport_ItemClick(object sender, ItemClickEventArgs e) { SaveWithDialog(SaveOptions.OnlyIfModified); // Get groups from project var groups = ProjectFilesControl.Project.FileGroups; // Get groups from tabs foreach (var group in GroupFilesControl.GridEditableDatas) { if (group.FileGroup != null && !groups.Contains(group.FileGroup)) { groups.Add(group.FileGroup); } } using (var wizard = new ExcelImportWizardForm()) { wizard.Initialize(groups, ProjectFilesControl.Project); if (wizard.ShowDialog(this) == DialogResult.OK) { ProjectFilesControl.RefreshItems(); UpdateUI(); } } }