How can I display a tooltip over a button using Windows Forms?
private void Form1_Load(object sender, System.EventArgs e)
{
ToolTip toolTip1 = new ToolTip();
toolTip1.AutoPopDelay = 5000;
toolTip1.InitialDelay = 1000;
toolTip1.ReshowDelay = 500;
toolTip1.ShowAlways = true;
toolTip1.SetToolTip(this.button1, "My button1");
toolTip1.SetToolTip(this.checkBox1, "My 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");
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);
}
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");
}
Using the form designer:
You can set also the tool tip programatically using the following call:
this.toolTip1.SetToolTip(this.targetControl, "My Tool Tip");
Lazy and compact storing text in the Tag property
If you are a bit lazy and do not use the Tag property of the controls for anything else you can use it to store the tooltip text and assign MouseHover event handlers to all such controls in one go like this:
private System.Windows.Forms.ToolTip ToolTip1;
private void PrepareTooltips()
{
ToolTip1 = new System.Windows.Forms.ToolTip();
foreach(Control ctrl in this.Controls)
{
if (ctrl is Button && ctrl.Tag is string)
{
ctrl.MouseHover += new EventHandler(delegate(Object o, EventArgs a)
{
var btn = (Control)o;
ToolTip1.SetToolTip(btn, btn.Tag.ToString());
});
}
}
}
In this case all buttons having a string in the Tag property is assigned a MouseHover event. To keep it compact the MouseHover event is defined inline using a lambda expression. In the event any button hovered will have its Tag text assigned to the Tooltip and shown.
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);
}
For default tooltip this can be used -
System.Windows.Forms.ToolTip ToolTip1 = new System.Windows.Forms.ToolTip();
ToolTip1.SetToolTip(this.textBox1, "Hello world");
A customized tooltip can also be used in case if formatting is required for tooltip message. This can be created by custom formatting the form and use it as tooltip dialog on mouse hover event of the control. Please check following link for more details -
http://newapputil.blogspot.in/2015/08/create-custom-tooltip-dialog-from-form.html
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.
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.
Source: Stackoverflow.com