Customizing Group Header TItles

[pumaprog]

Hello - I am using a group descriptor to group items on an sfListView.  The Property that is being used is called "Checked", which brings in a 1 or 0 value.  So, with the group headers, the two groups are called 1 and 0.  I'd like to call them 'Failed' and 'Passed', respectively.  Is there a way to convert the property in the group headers to another value?

            listView.DataSource.GroupDescriptors.Add(new GroupDescriptor()

            {

                PropertyName = "Checked",

                KeySelector = (object obj1) =>

                {

                    var item = (obj1 as HistoryItem);

                    return item.Checked.ToString();

                }

            });

[Muthu Kumaran Gnanavinayagam]

Hi Tommy, 

 

We have checked your query “Need to customize GroupHeader title” from our side. You can customize the GroupHeader title based on the value obtained from the ‘Checked’ property by using Converter. 

In the Converter, you need to check whether the value obtained is ‘1’ or ‘0’ and convert into required string value[‘Passed’ or ‘Failed’]. Please refer the below code example to know how to change the GroupHeader Key value using IntToStringConverter. 

 

Code example:[C#] 

public class IntToStringConverter : IValueConverter 

{ 

  public object Convert(object value, Type targetType, object parameter, CultureInfo culture) 

  { 

    if (value.ToString() == "1") 

      return "Passed"; 

    return "Failed"; 

  } 

 

  public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) 

  { 

    throw new NotImplementedException(); 

  } 

} 

 

Code example:[XAML] 

<DataTemplate x:Name="GroupHeaderTemplate"  x:Key="GroupHeaderTemplate"> 

  <ViewCell> 

    <ViewCell.View> 

      <Grid BackgroundColor="#E4E4E4"> 

        <Grid.ColumnDefinitions> 

          <ColumnDefinition Width="*" /> 

        </Grid.ColumnDefinitions> 

          <Label Text="{Binding Key,Converter={StaticResource IntToStringConverter}}" 

                 FontSize="22" 

                 FontAttributes="Bold" 

                 VerticalOptions="Center" 

                 HorizontalOptions="Start" 

                 Margin="20,0,0,0" /> 

      </Grid> 

    </ViewCell.View> 

  </ViewCell> 

</DataTemplate> 

 

For your reference we have attached the working sample link below, 

 

Sample Link: http://www.syncfusion.com/downloads/support/forum/131621/ze/ListViewSample741050037 

 

Please let us know if you require further assistance. 

 

Regards, 

G.Muthu Kumaran. 

[pumaprog]

Thanks for the response, Muthu!  This solution worked perfectly!

[Muthu Kumaran Gnanavinayagam]

Hi Tommy, 

 

Thanks for the update. 

 

Regards, 

G.Muthu Kumaran.