string strPercent = null;

GN.PercentDecimalSeparator = "

";

strPercent += "用空格代替小数点：" + myInt.ToString("P", GN); GN.PercentDecimalSeparator = "@";

strPercent += "\n用@符代替小数点：" + myInt.ToString("P", GN); GN.PercentDecimalSeparator = "#";

strPercent += "\n用#符代替小数点：" + myInt.ToString("P", GN); GN.PercentDecimalSeparator = "*";

strPercent += "\n用*号代替小数点：" + myInt.ToString("P", GN); MessageBox.Show(strPercent, "定义效果"); }

本实例主要介绍如何使用NumberFormatInfo类的PercentGroupSeparator属性设置百分比小数点左边的分节号。运行程序，效果如图5.8所示。

PercentGroupSeparator属性获取或设置在百分比值中对小数点左边数字进行分组的字符串。其语法格式如下：

public string PercentGroupSeparator { get; set; }

属性值：在百分比值中对小数点左边数字进行分组的字符串，默认值为“,”。 主要代码如下：

private void button1_Click(object sender, EventArgs e) {

System.Globalization.NumberFormatInfo GN = new System.Globalization.CultureInfo("zh-CN", false).NumberFormat;

Double myInt = 12345.678; string strSperar = null;

GN.PercentGroupSeparator = "，";

strSperar += "用逗号作分隔符：" + myInt.ToString("P", GN);