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

 #region 为生日定义转换器

    //定义一个转换类 并被页面引用为资源
    /*
   * IValueConverter - 值转换接口，将一个类型的值转换为另一个类型的值。它提供了一种将自定义逻辑应用于绑定的方式
   *     Convert - 正向转换器。将值从数据源传给绑定目标时，数据绑定引擎会调用此方法
   *     ConvertBack - 反向转换器。将值从绑定目标传给数据源时，数据绑定引擎会调用此方法
  */

    /// <summary>
    /// 正向转换器。将值从数据源传给绑定目标时，数据绑定引擎会调用此方法
    /// </summary>
    /// <param name="value">转换之前的值</param>
    /// <param name="targetType">转换之后的类型</param>
    /// <param name="parameter">转换器所使用的参数</param>
    /// <param name="culture">转换器所使用的区域信息</param>
    /// <returns>转换后的值</returns>
    public class DateTimeConverter : IValueConverter
    {
        public object Convert(object value,
                           Type targetType,
                           object parameter,
                           CultureInfo culture)
        {
            DateTime date = (DateTime)value;
            return date.ToString("yyyy-MM-dd");

        }

        /// <summary>
        /// 反向转换器。将值从绑定目标传给数据源时，数据绑定引擎会调用此方法
        /// </summary>
        /// <param name="value">转换之前的值</param>
        /// <param name="targetType">转换之后的类型</param>
        /// <param name="parameter">转换器所使用的参数</param>
        /// <param name="culture">转换器所使用的区域信息</param>
        /// <returns>转换后的值</returns>
        public object ConvertBack(object value,
                                  Type targetType,
                                  object parameter,
                                  CultureInfo culture)
        {
            string strValue = value.ToString();
            DateTime resultDateTime;
            if (DateTime.TryParse(strValue, out resultDateTime))
            {
                return resultDateTime;
            }
            return value;
        }



    }
    #endregion

    

#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:

<UserControl xmlns:data="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data"  x:Class="SilverlightAppTest.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:test="clr-namespace:SilverlightAppTest"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
    mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480">
    <UserControl.Resources>
        <test:DoubleConverter x:Key="DoubleConverter"></test:DoubleConverter>
    </UserControl.Resources>
    <Grid x:Name="LayoutRoot" Loaded="LayoutRoot_Loaded">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"></RowDefinition>
            <RowDefinition Height="Auto"></RowDefinition>
            <RowDefinition Height="Auto"></RowDefinition>
            <RowDefinition Height="Auto"></RowDefinition>
        </Grid.RowDefinitions>
            <data:DataGrid  x:Name="dg">
            <data:DataGrid.Columns> <!--Converter={StaticResource DoubleConverter},-->
              <data:DataGridTextColumn Header="Tax ID" Binding="{Binding TaxID, Mode=OneWay}" />
                <data:DataGridTextColumn Header="价格" Binding="{Binding Price,Converter={StaticResource DoubleConverter},Mode=OneWay}" />
                <data:DataGridTemplateColumn Header="Customer Since">
                    <data:DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <TextBlock Text="{Binding Path=Price}" x:Name="txtPrice"
                        VerticalAlignment="Center" HorizontalAlignment="Right" Margin="0,0,4,0" />
                        </DataTemplate> 
                        </data:DataGridTemplateColumn.CellTemplate> 
                    </data:DataGridTemplateColumn> 
                            <data:DataGridTemplateColumn Header="Customer Since">
                    <data:DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <StackPanel>
                            <TextBlock Text="AAA"
                        VerticalAlignment="Center" HorizontalAlignment="Right" Margin="0,0,4,0" />
                            <TextBlock Text="BBB"
                        VerticalAlignment="Center" HorizontalAlignment="Right" Margin="0,0,4,0" />
                                <TextBlock Text="CCC"
                        VerticalAlignment="Center" HorizontalAlignment="Right" Margin="0,0,4,0" />
                                <TextBlock Text="{Binding Path=Name}" VerticalAlignment="Center" HorizontalAlignment="Right" Margin="0,0,4,0" />
                                <data:DataGrid x:Name="datagrid" HeadersVisibility="None">

                                </data:DataGrid>
                            </StackPanel>
                            </DataTemplate>
                    </data:DataGridTemplateColumn.CellTemplate>
                </data:DataGridTemplateColumn>
            </data:DataGrid.Columns>
            <!--<data:DataGrid.RowDetailsTemplate>
                <DataTemplate>
                    <StackPanel x:Name="SignerPanel"  Margin="48,0,0,0">
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="{Binding BorrowerName, Mode=OneWay}" />
                            <TextBlock Text=": Signers" />
                        </StackPanel>
                    
                        <data:DataGrid x:Name="SignerSubGrid" IsReadOnly="False" AutoGenerateColumns="False"
                        Visibility="{Binding Path=Signer, Converter={StaticResource VisibilityConverter}}" 
                        RowEditEnded="SignerSubGrid_RowEditEnded">
                            <data:DataGrid.Columns>
                                <data:DataGridTemplateColumn Header="Signer Type">
                                    <data:DataGridTemplateColumn.CellTemplate>
                                        <DataTemplate>
                                            <ComboBox x:Name="SignerTypeCbo"
                                        SelectedItem="{Binding Path=SignerType, Mode=TwoWay}"
                                        ItemsSource="{Binding Source={StaticResource SignerTypes}}"
                                        Height="23" />
                                        </DataTemplate>
                                    </data:DataGridTemplateColumn.CellTemplate>
                                </data:DataGridTemplateColumn>
                                <data:DataGridTextColumn Header="Required Signer" Binding="{Binding RequiredSigner, Mode=TwoWay}" />
                                <data:DataGridTextColumn Header="Business Affiliation" Binding="{Binding BusinessAffiliation, Mode=TwoWay}" />
                                <data:DataGridTextColumn Header="Type of Business" Binding="{Binding TypeOfBusiness, Mode=TwoWay}" />
                            </data:DataGrid.Columns>
                        </data:DataGrid>

                        <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Margin="0,12,0,12">
                            <Button x:Name="addNewSigner" Content="Add Signer" 
                        Height="23" Margin="4,0,4,0" 
                        Click="addNewSigner_Click" />
                        </StackPanel>
                       
                    </StackPanel>
                </DataTemplate>
            </data:DataGrid.RowDetailsTemplate>-->
        </data:DataGrid>
        <ScrollViewer Grid.Row="1">
            <Canvas x:Name="MainCanvas" Background="White">
            <StackPanel Orientation="Horizontal"   VerticalAlignment="Top" >
                <Image x:Name="img" Stretch="None"   Margin="16" Source="china_life_logo.png"  />
                <Image x:Name="img2" Stretch="Fill"   Margin="16"/>
                <!--<Image x:Name="img3" Stretch="None" Margin="16" Source="main_visual_dim.jpg"/>-->
            </StackPanel>
                </Canvas>
        </ScrollViewer>
        <Button x:Name="btn"  Width="100" Height="25" Grid.Row="2" Click="btn_Click"></Button>
      <Button x:Name="btnExport" Content="导出到Excel"  Width="100" Height="25" Grid.Row="3"  Click="btnExport_Click"></Button>
    </Grid>
</UserControl>

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）