We tried several ways to make a textbox to accept the \"enter\", newline, etc.. But we are still facing the same problems. Most of the \"Third party\" controls allow the use
Set the mode to TextBoxMode.MultiLine
Either in the code-behind,
myTextBox.TextMode = TextBoxMode.MultiLine
or in the markup
When the user enters text in the TextBox, it will come back to you with new lines as \r\n. If you'd like to display it properly to the user, you could use
myTextBox.Text.Replace(Environment.NewLine, "
")