Extending GridViewComboBoxColumn

[Calin Calin]

Hi,

I am trying to extend the GridViewComboBoxColumn, here is my class:

public class ExtendedGridViewComboBoxColumn : GridViewComboBoxColumn
    {
        public static readonly DependencyProperty DisplayMemberProperty = DependencyProperty.Register("DisplayMember", typeof(object), typeof(ExtendedGridViewComboBoxColumn), null);
        public object DisplayMember
        {
            get
            {
                return GetValue(DisplayMemberProperty);
            }
            set
            {
                SetValue(DisplayMemberProperty, value);
            }
        }
}

Here is my xaml:

<CustomControls:ExtendedGridViewComboBoxColumn Header="Product" Width="150"
                                                    SortMemberPath="ProductName" SortingState="Ascending"
                                                    ItemsSourceBinding="{Binding Source={StaticResource productData}}"
                                                    DataMemberBinding="{Binding Path=ProductId, Mode=TwoWay}"
                                                    SelectedValueMemberPath="Id"
                                                    DisplayMemberPath="ProductName" DisplayMember="{Binding Path=ProductName, Mode=TwoWay}">

When I run the application I get a AG_E_PARSER_BAD_PROPERTY_VALUE.

What am I doing wrong here ?

Thank you,

[Pavel Pavlov]

Hi Calin Calin,

I will try to resemble the issue here in a small project. Meanwhile can you please share what is the final behavior you are trying to achieve with adding the DisplayMemberPath property. Such feedback will help me provide better assistance , and may also help our team improve the API and add anything missing which forces you to extend the column .  ( some version number details would be also helpful) .

Greetings,
Pavel Pavlov
the Telerik team

[Calin Calin]

Hi Pavel,

Thank you for your quick answer, 

Here is my scenario, I bind to the combo objects with 2 properties (Id and Name) the ValuePath will be Id the DisplayPath will be Name, the items on the grid also have 2 properties ObjectId, ObjectName. I can populate ObjectId using DataMemberBinding but there is no way from me to populate ObjectName (in xaml that is).

Thank you,

[Pavel Pavlov]

Hello Calin Calin,

I believe this can be achieved without extending the combo column. I will prepare a small sample for you .  Just to be sure - can you please give me more details on what is the relation between the Name/ID and the ObjectID/ObjectName properties.

Also I am not yet sure if this is applicable to your case,  but the latest version of RadGridView supports multiple columns displayed in the combo and the cell  - meaning you can simultaneously display the ID and the Name within the cell and within the combobox items.

Kind regards,
Pavel Pavlov
the Telerik team

[Calin Calin]

Hi,

This is great news (both the sample and the new feature in the grid).

Name/Id are properties in the objects from the ItemsSource of the combo

ObjectName/ObjectId are properties in the in the objects of the ItemsSource of the grid.

I am trying to copy the values from Name/Id over to ObjectName/ObjectId.

Regards,

[Calin Calin]

Hi Pavel,

Any luck with that sample ?

Thank you,

[Pavel Pavlov]

Hi Calin Calin,

Please find the sample attached.

Kind regards,
Pavel Pavlov
the Telerik team

[Calin Calin]

Hi Pavel,

Your sample is indeed interesting, more of a work around.

You've stated that "the latest version of RadGridView supports multiple columns displayed". Is there any way to get something similar to a grid view there ?

[Combo] [TextColumn] [TextColumn1]

_Id _Name

1    First

2    Second

I need to have that header.

Thank you,

[Pavel Pavlov]

Hello Calin Calin,

We can easily touch some templates to show such header. Can you specify where exactly the header should be displayed - at the top of the GridView column or  at the top of the ComboBox  ?

Greetings,
Pavel Pavlov
the Telerik team

[Calin Calin]

Hi Pavel,

At the top of the GridViewComboBoxColumn.

The point is to obtain something similar to the sample you've send me but with a header.

Regards,

[Pavel Pavlov]

Hi Calin Calin,

In such case you can just set the Header property of the column . If you need more complex header , you may set the Header property to a UIElement - e.g. a Grid or StackPanel with few textblocks inside.

Kind regards,
Pavel Pavlov
the Telerik team

[Calin Calin]

Hi Pavel,

A image is a 1000 words, this is what I need:

http://www.eggheadcafe.com/fileupload/288069082_DataGridImplentation.png

But as a GridViewComboBox. 

How can I achieve this ?

Thank you,

[Pavel Pavlov]

Hello Calin Calin,

This would require redefining the template for the combo.
Please have a look at the modified sample attached.

Greetings,
Pavel Pavlov
the Telerik team

[Calin Calin]

Hi,

Can we have a radgridview insteed of this ugly borders ?

Thanks,

[Calin Calin]

Hi Pavel,

After some battles and thanks to your template I managed to solved my issue.

I now have a combox that has as a item panel a fully functional grid.

Unfortunately I can't upload the code here (the forum only allows uploading valid image files). If someone else needs this please pm me or leave the contact info here.

Regards,