How to pass GridView as a ConverterParameter in C#

How to pass GridView as a ConverterParameter in C#

In C#, you can pass a GridView as a ConverterParameter by specifying the GridView object as the second argument to the BindingOperations.SetBinding method. The ConverterParameter is an optional parameter that can be used to pass additional data to the value converter.

Here's an example of how to use ConverterParameter to pass a GridView object to a value converter:

public class MyValueConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { // Get the GridView object from the ConverterParameter GridView gridView = (GridView)parameter; // Use the GridView object to format the value // ... } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { // Not implemented throw new NotImplementedException(); } } public void BindGridView() { // Create a new GridView object GridView gridView = new GridView(); // Add columns to the GridView // ... // Set the GridView as the ItemsSource of the ListView listView1.View = gridView; // Create a new Binding object Binding binding = new Binding(); // Set the binding properties binding.Path = new PropertyPath("MyProperty"); binding.Mode = BindingMode.OneWay; binding.Converter = new MyValueConverter(); // Set the GridView as the ConverterParameter binding.ConverterParameter = gridView; // Set the binding on the ListView's ItemsSource property BindingOperations.SetBinding(listView1, ItemsControl.ItemsSourceProperty, binding); }

In this example, the MyValueConverter class is a value converter that takes a value and a GridView object as input, and returns a formatted version of the value based on the columns in the GridView.

The BindGridView method creates a new GridView object, adds columns to it, and sets it as the View of the listView1 control. It then creates a new Binding object, sets the binding properties, and sets the GridView object as the ConverterParameter of the binding. Finally, it sets the binding on the ItemsSource property of the listView1 control using the BindingOperations.SetBinding method.

Examples

  1. "WPF ConverterParameter usage example"

    • Description: Learn how to use ConverterParameter in a WPF binding scenario.
    <Window.Resources> <local:MyConverter x:Key="MyConverter" /> </Window.Resources> <TextBlock Text="{Binding MyProperty, Converter={StaticResource MyConverter}, ConverterParameter=SomeParameter}" /> 
    public class MyConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { // Access the ConverterParameter var parameterValue = parameter as string; // Perform conversion return $"{value} - {parameterValue}"; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { // Implement ConvertBack if needed return Binding.DoNothing; } }

  2. "Pass GridView as ConverterParameter in WPF"

    • Description: Explore using GridView as a ConverterParameter in a WPF binding scenario.
    <Window.Resources> <local:MyConverter x:Key="MyConverter" /> </Window.Resources> <ListView Name="myListView" ItemsSource="{Binding MyItems}"> <ListView.View> <GridView> <GridViewColumn Header="Name" DisplayMemberBinding="{Binding Name}" /> <!-- Other columns --> </GridView> </ListView.View> </ListView> <TextBlock Text="{Binding SomeProperty, Converter={StaticResource MyConverter}, ConverterParameter={Binding ElementName=myListView}}" /> 
    public class MyConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { // Access the ConverterParameter (GridView) var gridView = parameter as GridView; // Perform conversion using gridView or its properties return $"{value} - {gridView.Columns.Count} columns"; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { // Implement ConvertBack if needed return Binding.DoNothing; } }

  3. "WPF binding with GridViewColumn as ConverterParameter"

    • Description: Use GridViewColumn as a ConverterParameter in a WPF binding scenario.
    <Window.Resources> <local:MyConverter x:Key="MyConverter" /> </Window.Resources> <ListView Name="myListView" ItemsSource="{Binding MyItems}"> <ListView.View> <GridView> <GridViewColumn Header="Name" DisplayMemberBinding="{Binding Name}" /> <GridViewColumn Header="Age" DisplayMemberBinding="{Binding Age}" /> </GridView> </ListView.View> </ListView> <TextBlock Text="{Binding SomeProperty, Converter={StaticResource MyConverter}, ConverterParameter={Binding Columns[0], ElementName=myListView}}" /> 
    public class MyConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { // Access the ConverterParameter (GridViewColumn) var gridViewColumn = parameter as GridViewColumn; // Perform conversion using gridViewColumn or its properties return $"{value} - {gridViewColumn.Header}"; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { // Implement ConvertBack if needed return Binding.DoNothing; } }

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