C#判断是否是数字 @阿良.NET

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C#判断是否是数字
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/// /// 判断是否是数字/// 
/// 字符串/// private bool IsNumeric(string str){if (str == null || str.Length == 0)return false;System.Text.ASCIIEncoding ascii = new System.Text.ASCIIEncoding();byte[] bytestr = ascii.GetBytes(str);foreach (byte c in bytestr){if (c < 48 || c > 57){return false;}}return true;}