Question

Why?

I built a simple custom MessageBox as as a Dialog in C#. When I show the message boxvia Show(), the message text is not highlighted. When I show this messagebox vi ShowDialog(), the text is highlighted.

I don’t want my text to be highlighted. Any thoughts or ideas?

public partial class MyMessageBox : Form
    {
        private String mCaption;
        private String mMessage;


        public MyMessageBox( Form anOwner, String aCaption, String aMessage )
        {
            InitializeComponent();

            mCaption = aCaption;
            Owner = anOwner;
            mMessage = aMessage;
        }


        private void btnCancelRequest_Click( object sender, EventArgs e )
        {
            ( (AddressForm)Owner ).RequestCancelled();
        }


        private void btnOk_Click( object sender, EventArgs e )
        {
            CloseDialog();
        }


        public void CloseDialog()
        {
            Close();
        }


        // Called from the Address Form
        public void HideCancelRequestButton()
        {
            btnCancelRequest.Visible = false;
        }


        private void MyMessageBox_Activated( object sender, EventArgs e )
        {
            Text = mCaption;
            txtMessage.Text = mMessage;
        }
    }

Answer 1

While I don’t see why the text would be highlighted, you could avoid this by explicitly specifying the textbox selection length:

txtMessage.SelectionLength = 0;

though as Jeremy commented, this may be a better use of a label unless you’re actually expecting user input.