自定义了一个窗体控件验证的类

/// 
    /// 窗体控件的验证    /// 
    public class WinFormValidating    {        /// 
        /// 路径验证        /// 
        /// 
             public static bool validtePath(Control ctrl,ErrorProvider ep)        {            string pattern = @"^[a-zA-Z]:(((\\(?! )[^/:*?<>\""|\\]+)+\\?)|(\\)?)\s*$";             Regex myRegex = new Regex(pattern);            bool isR = myRegex.IsMatch(ctrl.Text);            if (!isR)                ep.SetError(ctrl, "所输入的路径不合法");            return isR;        }        /// 
        /// 验证是否为空        /// 
        ///         ///         /// 
             public static bool validateNull(Control ctrl, ErrorProvider ep)        {            string content = ctrl.Text;            if ((content == null) || content.Trim().Length == 0)            {                ep.SetError(ctrl, "不能为空");                return false;            }            return true;        }        /// 
        /// 验证窗体所有控件        /// 
        ///         public static bool validateAll(Form f1)        {            //有一个控件没通过验证，返回false            bool isR = true;            foreach (Control ctrl in f1.Controls)            {                ctrl.Focus();                bool tempB= f1.Validate();                if (!tempB)                    isR = tempB;            }            return isR;        }        /// 
        /// 验证整数        /// 
        ///         ///         /// 
             public static bool validateInteger(Control ctrl, ErrorProvider ep)        {            string context = ctrl.Text;            string pattern = @"^([0-9]{1,})$";            Regex myRegex = new Regex(pattern);            bool isR = myRegex.IsMatch(context);            if (!isR)                ep.SetError(ctrl, "所输入的不是有效的整数");            return isR;        }        /// 
        /// 验证正浮点数        /// 
        ///         ///         /// 
             public static bool validatePositiveFloat(Control ctrl,ErrorProvider ep)        {            string context = ctrl.Text;            string pattern = @"^[1-9]d*.d*|0.d*[1-9]d*$";            Regex myRegex = new Regex(pattern);            bool isR = myRegex.IsMatch(context);            if (!isR)                ep.SetError(ctrl, "所输入的不是有效的整数");            return isR;        }    }

 需要验证的文本框的验证事件示例如下：

private void txtOutPath_Validating(object sender, CancelEventArgs e)        {            bool bt = WinFormValidating.validtePath(txtOutPath,errorProvider1);            if (!bt)                e.Cancel = true;        }