Stephens' C# Programming with Visual Studio® 2010 24-Hour Trainer

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LESSON 10 Building Custom dialogs

Make the New Comedian

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Button display the dialog. If the dialog returns DialogResult.OK,

add the new comedian’s name to the

ListBox.

1. Create an event handler for the New Comedian Button. Use code similar to the

following:

// Create a new comedian entry.

private void newComedianButton_Click(object sender, EventArgs e)

{

NewComedianForm newComedianDialog;

newComedianDialog = new NewComedianForm();

if (newComedianDialog.ShowDialog() == DialogResult.OK)

{

// Add the new comedian.

comedianListBox.Items.Add(

newComedianDialog.nameTextBox.Text);

}

}

Make the Delete Comedian

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Button remove the currently selected comedian from the

ListBox.

1. Create an event handler for the Delete Comedian Button. Use code similar to the

following:

// Remove the currently selected comedian.

private void deleteComedianButton_Click(object sender, EventArgs e)

{

comedianListBox.Items.Remove(comedianListBox.SelectedItem);

}

This makes the ListBox remove the currently selected item. Fortunately if there is no

selected item, the

ListBox does nothing instead of crashing.

When the user clicks the dialog’s Cancel button, close the form and return

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DialogResult.Cancel.

1. You don’t need to do anything else to make this work. When you set the dialog’s

CancelButton property to this Button, Visual C# sets the Button’s DialogResult

property to

DialogResult.Cancel so the button automatically ...