IValueConverter 데이터 변환

// Custom class implements the IValueConverter interface.
public class DateToStringConverter : IValueConverter
{

    #region IValueConverter Members

    // Define the Convert method to change a DateTime object to a month string.
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        // value is the data from the source object.
        DateTime thisdate = (DateTime)value;
        int monthnum = thisdate.Month;
        string month;
        switch (monthnum)
        {
            case 1:
                month = "January";
                break;
            case 2:
                month = "February";
                break;
            default:
                month = "Month not found";
                break;
        }
        // Return the value to pass to the target.
        return month;

    }

    // ConvertBack is not implemented for a OneWay binding.
    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }

    #endregion
}

 

 

사용법

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1. <Grid.Resources>  
2.  
3.     <DataTemplate x:Name="dataTemplate">  
4.         <Grid>  
5.             <Grid.ColumnDefinitions>  
6.                 <ColumnDefinition />  
7.                 <ColumnDefinition />  
8.             </Grid.ColumnDefinitions>  
9.             <TextBlock Grid.Column="0" Text="{Binding Month, Converter={StaticResource Converter1}}"/>  
10.             <TextBlock Grid.Column="1" Text="{Binding Total}"/>      
11.        </Grid>  
12.     </DataTemplate>  
13.  
14. </Grid.Resources>  
15.  
16. <ItemsControl x:Name="IC1" ItemsSource="{Binding}" ItemTemplate="{StaticResource dataTemplate}"/> 

<Grid.Resources>

    <DataTemplate x:Name="dataTemplate">
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition />
                <ColumnDefinition />
            </Grid.ColumnDefinitions>
            <TextBlock Grid.Column="0" Text="{Binding Month, Converter={StaticResource Converter1}}"/>
            <TextBlock Grid.Column="1" Text="{Binding Total}"/>    
       </Grid>
    </DataTemplate>

</Grid.Resources>

<ItemsControl x:Name="IC1" ItemsSource="{Binding}" ItemTemplate="{StaticResource dataTemplate}"/>