Folder browser dialog like open file dialog

It is something similar in Office, a dialog which allows to select a folder. The only difference is that the Select folder button is named "OK" instead of "Select folder".

Microsoft.Office.Interop.Excel.Application app = new Microsoft.Office.Interop.Excel.Application();
Microsoft.Office.Core.FileDialog fileDialog = app.get_FileDialog(Microsoft.Office.Core.MsoFileDialogType.msoFileDialogFolderPicker);
fileDialog.InitialFileName = "c:\\Temp\\"; //something you want
int nres = fileDialog.Show();
if (nres == -1) //ok
{
    Microsoft.Office.Core.FileDialogSelectedItems selectedItems = fileDialog.SelectedItems;

    string[] selectedFolders = selectedItems.Cast<string>().ToArray();

    if (selectedFolders.Length > 0)
    {
        string selectedFolder = selectedFolders[0];
    }
}

Of course, you need to add references to Microsoft.Office.Core (Microsoft Office 14.0 Object Library) and Microsoft.Office.Interop.Excel (Microsoft Excel 14.0 Object Library).

I found a good article about the default FolderBrowserDialog and its limitations: http://www.ssware.com/articles/folderbrowserdialog-unmasked-everything-you-wanted-to-know-about-the-folder-browser-component-from-dotnet-framework.htm

There is a third party compoment "Shell MegaPack" (http://www.ssware.com/megapack.htm) from ssware which offers windows explorer like file and folder browser-controls for WinForms, ASP.net and WPF.

If you are ok with adding a nuget package, Microsoft.WindowsAPICodePack.Shell has a CommonOpenFileDialog that can be used in "folder mode" which should match your desired usage.

var directoryDialog = new CommonOpenFileDialog
  {
     IsFolderPicker = true,
     Title = "Select Folder"
  };