private void headerUnderTestBrowseButton_Click(object sender, EventArgs e) { HierarchyItemDialog dialog = new HierarchyItemDialog(serviceProvider); dialog.Message = "Choose a header file in your project to generate a test suite from."; dialog.SelectableTypeGuids = new Guid[] { VSConstants.GUID_ItemType_PhysicalFile }; if (dialog.ShowDialog() == DialogResult.OK) { HierarchyItem item = dialog.SelectedItem; this.headerUnderTest = item; headerUnderTestField.Text = item.ProjectRelativePath; } }