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WPF - Tooltip
A tooltip is a control that creates a pop-up window that displays information for an element in the GUI. The hierarchical inheritance of ToolTip class is as follows −
Commonly Used Properties of ToolTip Class
| Sr. No. | Property & Description |
|---|---|
| 1 |
IsOpen Gets or sets a value that indicates whether the ToolTip is visible. |
| 2 |
IsOpenProperty Identifies the IsOpen dependency property. |
| 3 |
Placement Gets or sets how a ToolTip is positioned in relation to the placement target element. |
| 4 |
PlacementProperty Identifies the Placement dependency property. |
| 5 |
PlacementTarget Gets or sets the visual element or control that the tool tip should be positioned in relation to when opened by the ToolTipService. |
| 6 |
PlacementTargetProperty Identifies the PlacementTarget dependency property. |
| 7 |
TemplateSettings Gets an object that provides calculated values that can be referenced as TemplateBinding sources when defining templates for a ToolTip. |
Commonly Used Events of ToolTip Class
| Sr. No. | Events & Description |
|---|---|
| 1 |
Closed Occurs when a ToolTip is closed and is no longer visible. |
| 2 |
Opened Occurs when a ToolTip becomes visible. |
Example
Lets create a new WPF project with the name WPFToolTipControl.
Drag two text blocks, two text boxes, and one button from the Toolbox.
The following example shows how to use a ToolTip in a WPF application.
The following XAML code creates a ToolTip with some properties to display ToolTips on Button and Text boxes.
<Window x:Class = "WPFToolTipControl.MainWindow"
xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d = "http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local = "clr-namespace:WPFToolTipControl"
mc:Ignorable = "d" Title = "MainWindow" Height = "350" Width = "604">
<Grid>
<TextBlock x:Name = "textBlock" HorizontalAlignment = "Left"
Margin = "101,75,0,0" TextWrapping = "Wrap"
Text = "User Name" VerticalAlignment = "Top" />
<TextBlock x:Name = "textBlock1" HorizontalAlignment = "Left"
Margin = "101,125,0,0" TextWrapping = "Wrap"
Text = "Password" VerticalAlignment = "Top" />
<TextBox x:Name = "textBox" HorizontalAlignment = "Left"
Height = "24" Margin = "199,75,0,0" TextWrapping = "Wrap"
VerticalAlignment = "Top" Width = "219"
ToolTipService.ToolTip = "Enter User Name" />
<PasswordBox x:Name = "passwordBox" HorizontalAlignment = "Left"
Margin = "199,125,0,0" VerticalAlignment = "Top" Width = "219"
Height = "24" ToolTipService.ToolTip = "Enter Password" />
<Button x:Name = "button" Content = "Log in" HorizontalAlignment = "Left"
Margin = "199,189,0,0" VerticalAlignment = "Top" Width = "75"
ToolTipService.ToolTip = "Log in" />
</Grid>
</Window>
When you compile and execute the above code, it will produce the following output. When the mouse enters the region of the Button or the Text boxes, it will show a tool tip.
We recommend that you execute the above example code and try the other properties and events of ToolTip class.