C# - How to customize OpenFileDialog to select multiple folders and files?

Question

I have posted - How to use OpenFileDialog to select a folder?, I couldn\'t find the correct answer. So, I have changed my question.

I want to customize OpenFileDialo

Answer 1

You might not get a built in .Net control like that. Definitely the OpenFileDialog can not function as both File as well as Folder browser. You have two choices go for a third party tool like the one you found second make your own control. Surprisingly you might not find creating a very simple version of your own control very difficult.

Answer 2

If you use the FileNames property instead of the FileName property, you get a string array of each file selected, you select multiple files using the shift key. Like so:

private void button1_Click(object sender, EventArgs e)
{
    OpenFileDialog x = new OpenFileDialog();
    x.Multiselect = true;
    x.ShowDialog();
    string[] result = x.FileNames;

    foreach (string y in result)
       MessageBox.Show(y, "Selected Item", MessageBoxButtons.OK, MessageBoxIcon.Information);
}

For files and folders you need to use the CommonOpenFileDialog included with the WinAPI, the particular class is here.

Answer 3

Try this:

openFileDialog.Multiselect = true;