Check out example codes for "tool tip c#". It will help you in understanding the concepts better.

Code Example 1

ToolTip newContract = new ToolTip();

            newContract.AutoPopDelay = 5000;
            newContract.InitialDelay = 1000;
            newContract.ReshowDelay = 500;
            newContract.ShowAlways = true;

            newContract.SetToolTip(buttonNewContract, "Neuen Vertrag hinzufügen");

Learn ReactJs, React Native from akashmittal.com