aspx 判断是否为数字

 bool  isNumber = IsNumberic(this.TextBox1.Text.Trim()); if (!isNumber) {        lblMessage.Text = "班级编号必须为数字！";        TextBox1.Text = string.Empty;        TextBox1.Focus();        return; }

 

 #region 判断是否为数字    public bool IsNumberic(string oText)    {        try        {            int var1 = Convert.ToInt32(oText);            return true;        }        catch        {            return false;        }    }    #endregion