[Solved] How can i make that the lines in richTextBox1 will start from the right to the left?


Refer to the documentation on SelectionAlignment property:

http://msdn.microsoft.com/en-us/library/system.windows.forms.richtextbox.selectionalignment%28v=VS.100%29.aspx

Use the above (in your scenario) like so:

richTextBox1.SelectAll();
richTextBox1.SelectionAlignment = HorizontalAlignment.Right;

solved How can i make that the lines in richTextBox1 will start from the right to the left?