RichTextBox中字符的长度的问题
在richTextBox2中显示的字符要右对齐
private void button7_Click(object sender, EventArgs e)
{
string str = "iii ";
this.richTextBox2.AppendText(str.PadLeft(10) + "\n ");

str = "MMM ";
this.richTextBox2.AppendText(str.PadLeft(10) + "\n ");

str = "lll ";
this.richTextBox2.AppendText(str.PadLeft(10) + "\n ");
}

当RichTextBox的字体是SimSun时显示正确,当RichTextBox的字体是Arial时显示就不正确了,请问当字体为Arial时该如何做?

[解决办法]
统一设置Align属性不可以吗

richTextBox2.SelectionAlignment = HorizontalAlignment.Right;
[解决办法]
一些字体的M，L宽度不一样
但RichTextBox本身就每一行可以左中右对齐

richTextBox1.SelectionAlignment = HorizontalAlignment.Right;