Change the height of expanded child view in hierarchical RadGridView

HOW-TO
Change the height of child view in hierarchical RadGridView

SOLUTION
The height of child view is defined automatically when the RadGridView property UseScrollbarsInHierarchy is set to true. It is its default value. You can set it to false and resize the child views using the UI or set its height using code.

It could be used the row header to resize it manually by following next steps:

    1) Position the mouse cursor at the bottom of the expanded row in the row header column 
    2) Click the left mouse button 
    3) Drag the mouse up and down

Another possibility is to specify the height explicitly through code by using the RowFormatting event:

VB code:

Me.radGridView1.UseScrollbarsInHierarchy = True

Me.radGridView1.RowFormatting += New RowFormattingEventHandler(radGridView1_RowFormatting

  

Private Sub radGridView1_RowFormatting(sender As Object, e As RowFormattingEventArgs)

    Dim hierarchyRow As GridViewHierarchyRowInfo = TryCast(e.RowElement.RowInfo, GridViewHierarchyRowInfo)

    If hierarchyRow IsNot Nothing AndAlso hierarchyRow.ChildRow IsNot Nothing Then

        Dim customHeight As Integer = 1000

  

        hierarchyRow.ChildRow.MaxHeight = customHeight

        hierarchyRow.ChildRow.Height = customHeight

    End If

End Sub

C# code:

this.radGridView1.UseScrollbarsInHierarchy = true;

this.radGridView1.RowFormatting += new RowFormattingEventHandler(radGridView1_RowFormatting);

 

private void radGridView1_RowFormatting(object sender, RowFormattingEventArgs e)

{

    GridViewHierarchyRowInfo hierarchyRow = e.RowElement.RowInfo as GridViewHierarchyRowInfo;

    if (hierarchyRow != null && hierarchyRow.ChildRow != null)

    {

        int customHeight = 1000;

 

        hierarchyRow.ChildRow.MaxHeight = customHeight;

        hierarchyRow.ChildRow.Height = customHeight;

    }

}