system.windows.forms.richtextbox 不包含 C# 中的文档

Question

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TextRange tr = new TextRange(richTextBox1.Document.ContentStart, richTextBox1.Document.ContentEnd);

Error system.windows.forms.richtextbox does not contain document

Answer 1

It is like your error message already tries to tell you.

The RichTextBox class definition in WinForms doesn't contain a property Document.

You could assign your content to the richTextBox1.text property or use richTextBox1.LoadFile() . Please have a look at the MSDN documentation: RichTextBox Class