Question

c# string判断是否为小数

Answer 1

/// <summary> /// 判断是否是数字 /// </summary> /// <param name="str">字符串</param> /// <returns></returns> 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; }