In WPF how to create a textblock with copy text option (OR) a text box with text trimming option

In WPF how to create开发者_StackOverflow中文版 a textblock with copy text option (OR) a text box with text trimming option. Any control template needed? If yes, please let us know hpw to build it. Please help.

Sukan

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First part is a duplicate of Any way to make a WPF textblock selectable?.

TextTrimming is a property in the TextBox.