1.SINGLELINE Specifies single line only. Carriage returns and linefeeds do not break the line.
指定单行,回车与换行不会中断该行。
2.By default, the TextMode property of the control is set to TextBoxMode. SingleLine, which displays a single-line text box.
默认情况下,该控件的TextMode属性设置为TextBoxMode.SingleLine,将显示一个单行文本框。
3.If the match mode is SINGLELINE, the dot can match any character including new-line.
如果正则表达式匹配模式为SINGLELINE,小数点可以匹配包含换行符在内的任一字符。