How to Upload Select Multiple file In C#

Is this for a Windows Forms or WPF or Silverlight or ASP .Net application?

Your question is actually many questions; such as:

• how to create a list of files to select from
• how to create a checkbox list from the list of files
• how to determine which items are checked
• how to uplaod a file

Note also that it took more time to ask for clarification than the time it took to create this thread. It would really help if you could try to be more clear about what you need; at least about what type of application it is that you need.

private void Form1_Load(object sender, EventArgs e)
{
InitializeOpenFileDialog();
}

private void InitializeOpenFileDialog()
{
// Set the file dialog to filter for the file types you need.
this.openFileDialog1.Filter =
"Images (*.BMP;*.JPG;*.GIF)|*.BMP;*.JPG;*.GIF|" +
"All files (*.*)|*.*";

// Allow the user to select multiple images.
this.openFileDialog1.Multiselect = true;
this.openFileDialog1.Title = "My Image Browser";
}

private void selectFilesButton_Click(object sender, EventArgs e)
{
    DialogResult dr = this.openFileDialog1.ShowDialog();
}
the property below allows you to select you multiple files

this.openFileDialog1.Multiselect = true;