Search as you type not working

[Roy]

I've just downloaded the UI for WPF Q2 2016. I'm trying to use the Search as you type feature, but it's throwing exceptions.

My XAML looks as follows:

<telerik:RadGridView ItemsSource="{Binding Table}" AutoGenerateColumns="True"></telerik:RadGridView>

And my ViewModel:

public class TestViewModel : INotifyPropertyChanged
{
    private DataTable _table;
    public event PropertyChangedEventHandler PropertyChanged;

    public TestViewModel()
    {
        var table = new DataTable();

        table.Columns.Add("StringValue", typeof(string));

        for (int i = 0; i < 100; i++)
        {
            table.Rows.Add($"String Value {i}");
        }

        Table = table;
    }

    public DataTable Table
    {
        get { return _table; }
        set
        {
            _table = value;
            OnPropertyChanged(nameof(Table));
            OnPropertyChanged(nameof(View));
        }
    }

    public DataView View { get { return Table.DefaultView; } }

    protected virtual void OnPropertyChanged(string propertyName = null)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}

 

When thrying to search as you type I get an ArgumentException with message: "Column '[StringValue]' does not belong to table".

I've tried binding to the Table as well as the DefaultView of the table, but the results are the same.

public class TestViewModel : INotifyPropertyChanged

{

    private DataTable _table;

    public event PropertyChangedEventHandler PropertyChanged;

    public TestViewModel()

    {

        var table = new DataTable();

        table.Columns.Add("StringValue", typeof(string));

        for (int i = 0; i < 100; i++)

        {

            table.Rows.Add($"String Value {i}");

        }

        Table = table;

    }

    public DataTable Table

    {

        get { return _table; }

        set

        {

            _table = value;

            OnPropertyChanged(nameof(Table));

            OnPropertyChanged(nameof(View));

        }

    }

    public DataView View { get { return Table.DefaultView; } }

    

    protected virtual void OnPropertyChanged(string propertyName = null)

    {

        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));

    }

}

public class TestViewModel : INotifyPropertyChanged

{

    private DataTable _table;

    public event PropertyChangedEventHandler PropertyChanged;

    public TestViewModel()

    {

        var table = new DataTable();

        table.Columns.Add("StringValue", typeof(string));

        for (int i = 0; i < 100; i++)

        {

            table.Rows.Add($"String Value {i}");

        }

        Table = table;

    }

    public DataTable Table

    {

        get { return _table; }

        set

        {

            _table = value;

            OnPropertyChanged(nameof(Table));

            OnPropertyChanged(nameof(View));

        }

    }

    public DataView View { get { return Table.DefaultView; } }

    

    protected virtual void OnPropertyChanged(string propertyName = null)

    {

        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));

    }

}

public class TestViewModel : INotifyPropertyChanged

{

    private DataTable _table;

    public event PropertyChangedEventHandler PropertyChanged;

    public TestViewModel()

    {

        var table = new DataTable();

        table.Columns.Add("StringValue", typeof(string));

        for (int i = 0; i < 100; i++)

        {

            table.Rows.Add($"String Value {i}");

        }

        Table = table;

    }

    public DataTable Table

    {

        get { return _table; }

        set

        {

            _table = value;

            OnPropertyChanged(nameof(Table));

            OnPropertyChanged(nameof(View));

        }

    }

    public DataView View { get { return Table.DefaultView; } }

    

    protected virtual void OnPropertyChanged(string propertyName = null)

    {

        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));

    }

}

public class TestViewModel : INotifyPropertyChanged

{

    private DataTable _table;

    public event PropertyChangedEventHandler PropertyChanged;

    public TestViewModel()

    {

        var table = new DataTable();

        table.Columns.Add("StringValue", typeof(string));

        for (int i = 0; i < 100; i++)

        {

            table.Rows.Add($"String Value {i}");

        }

        Table = table;

    }

    public DataTable Table

    {

        get { return _table; }

        set

        {

            _table = value;

            OnPropertyChanged(nameof(Table));

            OnPropertyChanged(nameof(View));

        }

    }

    public DataView View { get { return Table.DefaultView; } }

    

    protected virtual void OnPropertyChanged(string propertyName = null)

    {

        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));

    }

}

[Yoan]

Hello Roy,

As it turns out, this is an issue in RadGridView. I have logged it in our feedback portal as a bug report. You can track its progress on the following link - Argument Exception is thrown when filtering through the search panel and the grid is bound to a DataTable.

I have also updated your Telerik points.

Regards,
Yoan
Telerik by Progress

[Roy]

Hello Yoan,

Thanks for the update. Is there currently a workarround possible by implementing the search itself (e.g. by creating a custom FilterDescriptor )? I can't find any extension points to customize the search as you type.

Regards Roy

[Yoan]

Hello Roy,

Actually, we have already fixed the issue. The fix will be available for you with our next internal build (next Monday).

Regards,
Yoan
Telerik by Progress

[Roy]

The Example I posted still doens't work. When I change te binding to the DefaultView searching is possible.

Another Issue I have that it is not possible to search in Custom types. How do I extend the search as I type to support searching in custom types?

[Yoan]

Hello Roy,

Generally, using the DefaultView is the recommended approach as it provides PropertyChanged notifications.

As for the other question:

May I ask you to clarify what you mean by custom type? Are you binding to complex properties or to a specific business object property?

Regards,
Yoan
Telerik by Progress