Question

I have a uvSelfLoadingTextBox with multiple instances on a form.
I would like to load the tooltip with the _value property at run time.

I’ve tried

public ucSelfLoadingTextBox()
{
    Windows.Forms.ToolTip myToolTip;
    myToolTip.AutomaticDelay = 5000;
    myToolTip.AutoPopDelay = 50000;
    myToolTip.InitialDelay = 100;
    myToolTip.ReshowDelay = 500;

    myToolTip.SetToolTip(this, _value);

inside the control but that does not work.

I have tried using the tooltip that is dragged onto the form

    ucSelfLoadingLogicTextBox uc = new ucSelfLoadingLogicTextBox();
    toolTipA.SetToolTip(uc,uc._value );

and that does not work.

What is the correct way to do this?

Answer 1

You forgot to instantiate myToolTip. You need to set it to new Tooltip().

Also, I don’t think it’s a good practice to assign the tooltip in the textbox’s constructor. You could do this in OnCreateControl() (that you need to override).

Your code could therefore become:

protected override void OnCreateControl()
{
    base.OnCreateControl();

    var myToolTip = new System.Windows.Forms.ToolTip
    {
        AutomaticDelay = 5000,
        AutoPopDelay = 50000,
        InitialDelay = 100,
        ReshowDelay = 500
    };

    myToolTip.SetToolTip(this, this.Text);
}