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In a WPF application, I want to build a "Find in Files" output pane, in which I can stream large quantity of text, without re-allocating memory at each line, like the TextBox would do.
The WPF TextBox has a single Text property which stores a contiguous string. Each time, I want to add content, I need to do textBox.Text += "New Text", which is bad.
Ideally, that control would be virtual and require a minimum of resources, just for the visible lines.
I thought about using a standard ListBox with a VirtualizingStackPanel, but it does not allow Text Selection across lines.
(At each new line added, I want the control to update)
Any suggestion?
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Setting the TextWrapping attribute to Wrap will cause entered text to wrap to a new line when the edge of the TextBox control is reached, automatically expanding the TextBox control to include room for a new line, if necessary.
In WPF, the Label control does not support text wrapping. If you need a label that wraps contents across multiple lines, you can use a TextBlock control. Place a TextBlock control inside a Label and apply wrapping on TextBlock.
Adding Line Breaks Sometimes you will want to insert a line break within a TextBlock. You can do this with a LineBreak inline, added as an XAML element within the text. A new line will be started at the position of this element.
A multiline text box allows you to display more than one line of text in the control. If the WordWrap property is set to true , text entered into the multiline text box is wrapped to the next line in the control.
If you do not expect much more than ten-thousands of search results in your application, a TextBlock control or readonly multiline TextBox will suffice by far.
The TextBox class has an AppendText() method which should be fast enough for you.
If you need text highlighting / formatting then maybe you want to use RichTextBox.
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