Opening multiple files (OpenFileDialog, C#)

Question

I\'m trying to open multiple files at once with the OpenFileDialog, using FileNames instead of FileName. But I cannot see any examples

Answer 1

You can use this method for text files:

OpenFileDialog open = new OpenFileDialog();
open.Filter = "All Files *.txt | *.txt";
open.Multiselect = true;
open.Title = "Open Text Files";

if (open.ShowDialog() == DialogResult.OK)
{
    foreach (String file in open.FileNames)
    {    
         string temp = YourRichTextBox.Text;

         YourRichTextBox.LoadFile(file, RichTextBoxStreamType.PlainText);

         YourRichTextBox.Text += temp;
    }
}