C# 13: Forms: File Opening and Saving

How to open and saving files in C# forms.

Overview

The applicaion displays standard Windows dialog boxes for opening and saving files when using:

• OpenFileDialog
• SaveFileDialog

Displaying a Dialog control

On adding an OpenFileDialog or SaveFileDialog control to a form, it appears in the component tray at the bottom of the designer.

Display the dialog box in your code with .ShowDialog(this);

Detect Selection

Which button the user clicked is found with:

• Open Button: DialogResult.OK
• Cancel Button: DialogResult.Cancel

if (openFile.ShowDialog() == DialogResult.OK)
{
    // Do Something
    MessageBox.Show("User clicked the open button")
}
else if (openFile.ShowDialog() == DialogResult.Cancel)
{
    // Do Something
    MessageBox.Show("User clicked the cancel button")
}
else 
{
    // Do Something
    MessageBox.Show("Nothing happened")
}

Initial Directory

Display a directory with the property .InitialDirector

QED

© Adam Heinz

6 November 2024