如果这样的话要只是RichTextBox中的对齐方式，请参考此链接，

http://msdn.microsoft.com/en-us/library/system.windows.forms.richtextbox.selectionalignment.aspx [ ^ ]



希望它有所帮助。

Hi,
If this is going to be only the alignment in RichTextBox then refer this link,
http://msdn.microsoft.com/en-us/library/system.windows.forms.richtextbox.selectionalignment.aspx[^]

Hope it helps.