在旧文本之前将文本插入 WPF 文本框
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Insert text into WPF textbox before the old text
提问by Tarek Saied
how i can Insert text into WPF textboxbefore the old text
如何textbox在旧文本之前将文本插入 WPF
like old textthen i add text new text old text
就像old text然后我添加文本new text old text
回答by S3ddi9
you can use either
你可以使用
textbox.Text="my new text" + textbox.Text;
or
或者
txtbox1.SelectionStart = 0;
txtbox1.SelectedText = "my new text";
回答by Tigran
I think the easiest way is to use Binding Converterwhere you will get the changeddata and can convert it into format you want before assigning it to UI.
我认为最简单的方法是使用Binding Converter，您可以在其中获取更改后的数据，并在将其分配给 UI 之前将其转换为您想要的格式。
回答by Chris Amelinckx
@S3ddi9 For the second option here, you might need to do:
@S3ddi9 对于这里的第二个选项，您可能需要执行以下操作：
txtbox1.SelectionStart = 0;
txtbox1.SelectionLength = 0; //this was missing
txtbox1.SelectedText = "my inserted text at top";
