我要评论/// <summary>
/// 随机生成字符串
/// </summary>
/// <param name="operationtype">数字字母组合：numberletter 数字：number 大小写组合字母：allletter 大写字母：upletter 小写字母：lowletter</param>
/// <param name="length">位数</param>
/// <returns></returns>
public static string charm(string operationtype, int length)
{
string chars = "0123456789abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz";
switch (operationtype)
{
case "numberletter"://全字符模式
chars = "0123456789abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz";
break;
case "number"://数字模式
chars = "0123456789";
break;
case "allletter"://大小写字母模式
chars = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz";
break;
case "upletter"://大写字母模式
chars = "abcdefghijklmnopqrstuvwxyz";
break;
case "lowletter"://小写字母模式
chars = "abcdefghijklmnopqrstuvwxyz";
break;
}
random randrom = new random((int)datetime.now.ticks);
string str = "";
for (int i = 0; i < length; i++)
{
str += chars[randrom.next(chars.length)];
}
return str;
}
生成随机字符串，字符组合等...
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