Hi,

Thanks for that sample project - it really helped a lot

I have managed to reproduce your code in my project and now I have child rows, but this raised couple of other issues and doubts.

1st: In declaration of OuterObject from your sample  "InnerInfo" is declared as a List of objects

 public class MyOuterObjectModel
{
public List<MyInnerObjectModel> InnerInfo { get; set; }
public string Products { get; set; }
public string Description { get; set; }
}

Can I declare "InnerInfo"  as a simple one object like so:

 public MyInnerObjectModel InnerInfo { get; set; } //  ??? Cause I will have only one inner row (child row) for every outer row (parent row)

Hello Marko,

Thank you for your post.

I was looking into your questions and :

1)      In order to have one row in your second layout you can have a list with one element inside.

2)      To manipulate the expansion indicator height you can set a style like that:

 xmlns:Prim="clr-namespace:Infragistics.Controls.Grids.Primitives;assembly=InfragisticsWPF4.Controls.Grids.XamGrid.v11.2"

…

  <ig:XamGrid.ExpansionIndicatorSettings>

                <ig:ExpansionIndicatorSettings>

                    <ig:ExpansionIndicatorSettings.Style>

                        <Style TargetType="{x:Type Prim:ExpansionIndicatorCellControl}">

                            <Setter Property="Height" Value="50"/>

                        </Style>

                    </ig:ExpansionIndicatorSettings.Style>

                </ig:ExpansionIndicatorSettings>

            </ig:XamGrid.ExpansionIndicatorSettings>

3)      To hide the layout header there is a property called HeaderVisibility. You can set it like that:

<ig:ColumnLayout Key="InnerInfo" HeaderVisibility="Hidden">

Please let me know if you require additional assistance regarding the discussed matter.

Hello Marko,

Please remove the x:Type and the curly braces like that:

<Style TargetType="Prim:ExpansionIndicatorCellControl" … >

Please let me know if you require further assistance regarding the discussed matter.

Sincerely,

Ekaterina

Developer Support Engineer

Infragistics, Inc.

Hi.

That worked, thanks.

Hello ,

I am just checking if you require any further assistance on the matter.

Sincerely,

Ekaterina

Developer Support Engineer

Infragistics

Hi Marko,

I am glad I was able to assist you.

As to your last questions, I took a look and there is a gap in the 3ird row because, as I mentioned, my code reaches only the second level of the hierarchy. In order to manipulate the third one, you can nest additional loop like this:

foreach (Row r in xamGrid1.Rows)

            {

                if (r.Control.Height != 14)

                    r.Control.Height = 14;

                if (r.HasChildren)

                    foreach (var c in r.ChildBands)

                    {

                        foreach (Row row in c.Rows)

                        {

                            if (row.Control != null && row.Control.Height != 14)

                                row.Control.Height = 14;

                            foreach (var v in row.ChildBands)

                            {

                                foreach (Row row2 in v.Rows)

                                {

                                    if (row2.Control != null && row2.Control.Height != 14)

                                        row2.Control.Height = 14;

                                }

                            }

                        }

                    }

            }

Or you can organize this in a recursion structure, so no nesting will be necessary in future, if you decide to add more levels in your hierarchy.

As to your second question, every column layout can declare its own expansion indicator’s style - all you have to do is to define ExpansionIndicatorSettings on the desired level. Please notice that you should use ExpansionIndicatorSettingsOverridel like this:

<ig:ColumnLayout.ExpansionIndicatorSettings>

                            <ig:ExpansionIndicatorSettingsOverride>

                     <ig:ExpansionIndicatorSettingsOverride.Style>

                                    <Style TargetType="Prim:ExpansionIndicatorCellControl">

                                        <Setter Property="Height" Value="20"/>

                                        <Setter Property="Background" Value="Violet"/>

                                    </Style>

                                </ig:ExpansionIndicatorSettingsOverride.Style>

                            </ig:ExpansionIndicatorSettingsOverride>

                        </ig:ColumnLayout.ExpansionIndicatorSettings>

                        <ig:ColumnLayout.Columns> …

Please let me know if you have any additional questions regarding the discussed matter.

Hi EkStaneva

Your solution works fine. Thank you very much for your help.

Hello Marko,

I have been investigating into your issue and you can use the following code in order to set the height of the xamGrid’s main layout and second layout rows separately:

private void xamGrid1_LayoutUpdated(object sender, EventArgs e)

        {

            foreach (Row r in xamGrid1.Rows)

            {

                if (r.Control.Height != 14)

                    r.Control.Height = 14;

                if (r.HasChildren)

                    foreach (var c in r.ChildBands)

                    {

                        foreach (Row row in c.Rows)

                        {

                            if (row.Control != null && row.Control.Height != 14)

                                row.Control.Height = 14;

                        }

                    }

            }

        }

Please notice that the inner instance of the row.Control will be instantiated when the corresponding layout gets expanded, which means that the height property should be set when the layout is being updated. That’s why I am placing this code in the LayoutUpdated handler. Notice also the check which I am performing (if value is 14) – this one is done in order to guarantee that the height property will be set only once, even though the handler is being invoked multiple times.

Please let me know if you require funder assistance regarding the discussed matter.