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Use Footer / Header for this. You can simply implement this function as needed for you.
Hello, can you tell me how to use the DropDownHeaderContentTemplate / DropDownFooterContentTemplate with staticresource Datatemplate , I binded it ,but it not activated, I don't know ,what's wrong with it
Use Footer / Header for this. You can simply implement this function as needed for you.
Hello, can you tell me how to use the DropDownHeaderContentTemplate / DropDownFooterContentTemplate with staticresource Datatemplate , I binded it ,but it not activated, I don't know ,what's wrong with it
Thanks a lot
Set IsDropDownHeaderVisible = true or IsDropDownFooterVisible = true can show it
Describe the feature
In the MultiSelectionComboBox there should be a CheckBox which allows you to select/unselect all options at once like in the following gif:
And then there should be also a Property which allows to show/hide that SelectAll-CheckBox and set the text for it.
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