Adding strings to a RichTextBox in C#

问题

I currently have a function that will set a value to a RichTextBox, although how could you "add" a value or a new line to it, rather than overwriting existing data in the RichTextBox?

richTextBox2.Text = DateTime.Today + " Hello";

回答1:

richTextBox2.AppendText(Environment.NewLine + DateTime.Today + " Hello"); 

回答2:

richTextBox2.AppendText(String.Format("{0} the date is {1}{2}", "Hello", DateTime.Today, Environment.NewLine));

Please don't use +

回答3:

richTextBox2.Document.Blocks.Clear();
richTextBox2.Document.Blocks.Add(new Paragraph(new Run("string")));

回答4:

richTextBox2.Text = "Something " + richTextBox2.Text + " and something"

来源：https://stackoverflow.com/questions/6485156/adding-strings-to-a-richtextbox-in-c-sharp