silverlight3 datagrid c#中动态生成模板列（日期格式）使用IValueConvert对绑定数据的格式化操作

生成datagrid模板列代码用c#（格式转换）

void GetDateTimeTemplate(DataGrid dgrid, string headername, string bindingname)
    {
        DataGridTemplateColumn templateColumn = new DataGridTemplateColumn();
        templateColumn.Header = headername;

        StringBuilder CellTemp = new StringBuilder();

        CellTemp.Append("<DataTemplate ");
        CellTemp.Append("xmlns='http://schemas.microsoft.com/winfx/");

        CellTemp.Append("2006/xaml/presentation' ");
        CellTemp.Append("xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml' ");

        //Be sure to replace "YourNamespace" and "YourAssembly" with your app's

        //actual namespace and assembly here

        CellTemp.Append("xmlns:local='clr-namespace:AlantusBI");
        CellTemp.Append(";assembly=AlantusBI'>");

        CellTemp.Append("<Grid>");
        CellTemp.Append("<Grid.Resources>");

        CellTemp.Append("<local:DateTimeConverter x:Key='DateConverter' />");
        CellTemp.Append("</Grid.Resources>");

        CellTemp.Append("<TextBlock ");
        CellTemp.Append("Text = '{Binding " + bindingname + ", ");

        CellTemp.Append("Converter={StaticResource DateConverter}}' ");
        CellTemp.Append("Margin='4'/>");

        CellTemp.Append("</Grid>");
        CellTemp.Append("</DataTemplate>");

        StringBuilder CellETemp = new StringBuilder();
        CellETemp.Append("<DataTemplate ");

        CellETemp.Append("xmlns='http://schemas.microsoft.com/winfx/");
        CellETemp.Append("2006/xaml/presentation' ");

        CellETemp.Append("xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml' ");
        CellETemp.Append("xmlns:basics='clr-namespace:System.Windows.Controls;");

        CellETemp.Append("assembly=System.Windows.Controls' >");
        CellETemp.Append("<basics:DatePicker ");

        CellETemp.Append("SelectedDate='{Binding " + bindingname + ", Mode=TwoWay}' />");
        CellETemp.Append("</DataTemplate>");

        templateColumn.CellTemplate = (DataTemplate)XamlReader.Load(CellTemp.ToString());
        templateColumn.CellEditingTemplate = (DataTemplate)XamlReader.Load(CellETemp.ToString());
        dgrid.Columns.Add(templateColumn);

日期格式转换类数字格式转换类

Code

#region 数字转换 123,345.00
    /// <summary>
    /// 数字格式转换如123,345.00
    /// </summary>
    public class DoubleConverter : IValueConverter
    {
        public object Convert(object value,
                          Type targetType,
                          object parameter,
                          CultureInfo culture)
        {
             //Double d = (double )value;
             //return d.ToString("N2");
            //上面这样写如果传入的值是string类型不能转换
           try
            {
                Double d = double.Parse(value.ToString());
                return d.ToString("N2");
            }
            catch (Exception ex)
            {
            }
            return value;
        }
        public object ConvertBack(object value,
                                Type targetType,
                                object parameter,
                                CultureInfo culture)
        {
            string strValue = value.ToString();
            Double result;
            if (Double.TryParse(strValue, out result))
            {
                return result;
            }
            return value;
        }
    }

在Silverlight中我们可以使用IValueConverter 实现绑定数据的格式化在页面中使用

Page.xaml界面设计，Page.xaml代码如下:

编辑Page.xaml的后台代码，Page.xaml.cs的代码为

private void LayoutRoot_Loaded(object sender, RoutedEventArgs e)
        {
            List<Book> list = new List<Book>();
            for (int i = 0; i < 4; i++)
            {
                Book book = new Book();
                book.ID = i.ToString();
                book.Name = i.ToString() + "Silverlight开发  kafa";
                book.Price = 123456;
                list.Add(book);
            }
}

主要是在页面中修改代码添加上资源

<UserControl.Resources>
<test:DoubleConverter x:Key="DoubleConverter"></test:DoubleConverter>
</UserControl.Resources>

按F5运行可看到价格段的记录在datagrid中显示时具有格式（本例中显示为 123,345.00）

posted on 2009-09-29 13:58 zlb 阅读(2356) 评论(1) 编辑收藏举报

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zlb

silverlight3 datagrid c#中动态生成模板列（日期格式）使用IValueConvert对绑定数据的格式化操作

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