Is there something like a horizontal line (i.e. <hr>) that can be used for C# Message Box?

Question

For example instead of doing the ("\n-----------------"); for a MessageBox.Show(); function, is there an in-build horizontal line generator similar to the HTML <hr>?

Answer 1

A messagebox is a simple element for showing plain text. It does not have much design features.

However you can easily create a new form, put in its text and show it using Form.ShowDialog. Now you can add any design-element you want by chosing it in the toolbox, e.g. by using a 2px label as shown here.

You could also implement the syntax you know from MessageBox by using a static method:

public class CustomMessageBox : Form
{
    private readonly static instance = new CustomMessageBox();
    private DialogResult result = DialogResult.No;

    private CustomMessageBox()
    {
        btnOK.DialogResult = DialogResult.OK;
        btnCancel.DialogResult = DialogResult.Cancel;
        this.AcceptButton = btnOK;
        this.CancelButton = btnCancel;
    }
    public static DialogResult Show(string text)
    {
        return instance.ShowDialog();
    }
}