Display a tooltip over a button using Windows Forms

The ToolTip is a single WinForms control that handles displaying tool tips for multiple elements on a single form.

Say your button is called MyButton.

1. Add a ToolTip control (under Common Controls in the Windows Forms toolbox) to your form.
2. Give it a name - say MyToolTip
3. Set the "Tooltip on MyToolTip" property of MyButton (under Misc in the button property grid) to the text that should appear when you hover over it.

The tooltip will automatically appear when the cursor hovers over the button, but if you need to display it programmatically, call

MyToolTip.Show("Tooltip text goes here", MyButton);

in your code to show the tooltip, and

MyToolTip.Hide(MyButton);

to make it disappear again.

Using the form designer:

• Drag the ToolTip control from the Toolbox, onto the form.
• Select the properties of the control you want the tool tip to appear on.
• Find the property 'ToolTip on toolTip1' (the name may not be toolTip1 if you changed it's default name).
• Set the text of the property to the tool tip text you would like to display.

You can set also the tool tip programatically using the following call:

this.toolTip1.SetToolTip(this.targetControl, "My Tool Tip");

You can use the ToolTip class:

Creating a ToolTip for a Control

Example:

private void Form1_Load(object sender, System.EventArgs e)
{
    System.Windows.Forms.ToolTip ToolTip1 = new System.Windows.Forms.ToolTip();
    ToolTip1.SetToolTip(this.Button1, "Hello");
}

The .NET framework provides a ToolTip class. Add one of those to your form and then on the MouseHover event for each item you would like a tooltip for, do something like the following:

private void checkBox1_MouseHover(object sender, EventArgs e)
{
    toolTip1.Show("text", checkBox1);
}

Based on DaveK's answer, I created a control extension:

public static void SetToolTip(this Control control, string txt)
{
    new ToolTip().SetToolTip(control, txt);
}

Then you can set the tooltip for any control with a single line:

this.MyButton.SetToolTip("Hello world");

I have done the cool tool tip Code is:

1.Initialize the tooltip object

2.call the object when or where you want to displays your creativity

Ex-  
ToolTip t=new ToolTip();
t.setToolTip(textBoxName,"write your message here what tp you want to show up");

Sure, just handle the mousehover event and tell it to display a tool tip. t is a tooltip defined either in the globals or in the constructor using:

ToolTip t = new ToolTip();

then the event handler:

private void control_MouseHover(object sender, EventArgs e)
{
  t.Show("Text", (Control)sender);
}