#region 判断字符串是否是数字的/// <summary>/// 判断是否是数字/// </summary>/// <param name="str">字符串</param>/// <returns>bool</returns>public 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;}#endregion 判断字符串是否是数字的
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