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Show Tooltip On Trimmed Text

If the text of a RadComboBox exceeds the width of its parent, the content will be trimmed. As of R3 2017 SP1, you can show a tooltip for the trimmed text by setting the ComboBoxToolTipHelper.ShowToolTipOnTrimmedText attached property to True. The result is demonstrated in Figure 1.

Figure 1: RadComboBox with tooltip for trimmed text

RadComboBox with tooltip for trimmed text

The property affects only a non-editable RadComboBox when its tooltip is set either through the Tooltip or the ToolTipService.ToolTip properties and the text of the control is trimmed.

Example 1: Set the ShowToolTipOnTrimmedText property

<telerik:RadComboBox telerik:ComboBoxToolTipHelper.ShowToolTipOnTrimmedText="True"
                    ToolTipService.ToolTip="{Binding Text, RelativeSource={RelativeSource Self}}"
                    ItemsSource="{Binding Players}"
                    VerticalAlignment="Center"
                    Width="80" />

A working version of this example is also available in the SDK Samples Browser, titled Show Tooltip On Trimmed Text. Its full source code can be found on GitHub.

See Also

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