CODEWITHSUNDEEP
c#winforms
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Reputation: 381

How to add tooltip to user defined textbox on a winform

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?

Upvotes: 4

Views: 10889

Answers (2)

Cristian Lupascu
Cristian Lupascu

Reputation: 40516

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);
}

Upvotes: 2

David.Chu.ca
David.Chu.ca

Reputation: 38644

Many visible controls on windows form have ToolTip property. Just set the Tooltip with your newly created one. You can also add tooltip to your form. Have you tried this?

myToolTip.ShowAlways = true;

And try to set this tip to a button control. This may be a good test for your tooltip.

Upvotes: 0

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