binding.format事件

最新推荐文章于 2024-05-06 12:00:55 发布

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最新推荐文章于 2024-05-06 12:00:55 发布

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文章标签： c#

原文链接：http://www.cnblogs.com/peijian708/archive/2008/02/01/1061459.html

本文介绍了如何使用C#将小数类型的数据转换为货币格式字符串，并从货币格式字符串转换回小数类型的方法。通过自定义绑定代理的Format和Parse事件，实现了在用户界面中以友好的货币形式展示数值。

private void DecimalToCurrencyString(object sender, ConvertEventArgs cevent)
{
// The method converts only to string type. Test this using the DesiredType.
if(cevent.DesiredType != typeof(string)) return;

// Use the ToString method to format the value as currency ("c").
cevent.Value = ((decimal) cevent.Value).ToString("c");
}

private void CurrencyStringToDecimal(object sender, ConvertEventArgs cevent)
{
// The method converts back to decimal type only.
if(cevent.DesiredType != typeof(decimal)) return;

   // Converts the string back to decimal using the static Parse method.
   cevent.Value = Decimal.Parse(cevent.Value.ToString(),
   NumberStyles.Currency, null);
}

private void BindControl()
{
   // Creates the binding first. The OrderAmount is a Decimal type.
   Binding b = new Binding
      ("Text", ds, "customers.custToOrders.OrderAmount");
   // Add the delegates to the event.
   b.Format += new ConvertEventHandler(DecimalToCurrencyString);
   b.Parse += new ConvertEventHandler(CurrencyStringToDecimal);
   text1.DataBindings.Add(b);
}

转载于:https://www.cnblogs.com/peijian708/archive/2008/02/01/1061459.html