Infragistics2.Win.UltraWinTree.v8.1
RootColumnSet Property
See Also  Example
Infragistics.Win.UltraWinTree Namespace > UltraTreeColumnSettings Class : RootColumnSet Property

Gets/sets the UltraTreeColumnSet instance that defines the column structure for nodes that do not have a more specific setting.

Syntax

Visual Basic (Declaration) 
Public Property RootColumnSet As UltraTreeColumnSet
C# 
public UltraTreeColumnSet RootColumnSet {get; set;}

Example

The following code sample demonstrates how to use the properties of the UltraTreeColumnSet object to control the behavior of all columns in a particular UltraTreeColumnSet's Columns collection.

Visual BasicCopy Code
Imports Infragistics.Win
Imports Infragistics.Win.Layout
Imports Infragistics.Win.UltraWinTree

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim rootColumnSet As UltraTreeColumnSet = Me.ultraTree1.ColumnSettings.RootColumnSet

        ' Disallow cell sizing for all columns in the Columns collection
        rootColumnSet.AllowCellSizing = LayoutSizing.None

        ' Disallow cell span sizing for all columns in the Columns collection
        rootColumnSet.AllowCellSpanSizing = GridBagLayoutAllowSpanSizing.None

        ' Disallow moving for all columns in the Columns collection
        rootColumnSet.AllowColMoving = GridBagLayoutAllowMoving.None

        ' Disallow header sizing for all columns in the Columns collection
        rootColumnSet.AllowLabelSizing = LayoutSizing.None

        ' Disallow header span sizing for all columns in the Columns collection
        rootColumnSet.AllowLabelSpanSizing = GridBagLayoutAllowSpanSizing.None

        ' Disallow sorting for all columns in the Columns collection
        rootColumnSet.AllowSorting = DefaultableBoolean.False

        ' Don't display cell borders for any columns in the Columns collection
        rootColumnSet.BorderStyleCell = UIElementBorderStyle.None

        ' Don't display header borders for any columns in the Columns collection
        rootColumnSet.BorderStyleColumnHeader = UIElementBorderStyle.None

        ' Set the BackColor for all cells in all columns to 'Control'
        rootColumnSet.CellAppearance.BackColor = SystemColors.Control

        ' Set CellWrapText to False to prevent text from
        ' wrapping to additional lines in all columns
        rootColumnSet.CellWrapText = DefaultableBoolean.False

        ' Set ColumnAutoSizeMode to 'VisibleNodes' so that when the end
        ' user auto-sizes a column, only currently visible cells are considered
        rootColumnSet.ColumnAutoSizeMode = ColumnAutoSizeMode.VisibleNodes

        ' Set the HeaderStyle property to 'Standard', so that column headers
        ' are not themed, and set the BackColor of the ColumnHeaderAppearance
        ' to 'ControlDark'.
        rootColumnSet.HeaderStyle = HeaderStyle.Standard
        rootColumnSet.ColumnHeaderAppearance.BackColor = SystemColors.ControlDark

        ' Change the size of images displayed in the headers to 20w X 20h
        rootColumnSet.ColumnHeaderImageSize = New Size(20, 20)

        ' If there is currently no ExpansionIndicatorColumn, set the
        ' CanShowExpansionIndicator property to true for the
        ' 'CompanyName' column
        If rootColumnSet.ExpansionIndicatorColumn Is Nothing Then
            rootColumnSet.Columns("CompanyName").CanShowExpansionIndicator = DefaultableBoolean.True
        End If

        ' Set the LabelPosition property ot display headers on top of cells,
        ' and set the LabelStyle property to display headers and cells
        ' separately.
        rootColumnSet.LabelPosition = NodeLayoutLabelPosition.Top
        rootColumnSet.LabelStyle = NodeLayoutLabelStyle.Separate

        ' Assign the 'CompanyName' column to the NodeTextColumn property,
        ' so that the value of the Text property is obtained from the cell
        ' in the 'CompanyName' column.
        rootColumnSet.NodeTextColumn = rootColumnSet.Columns("CompanyName")

        ' Set the NullText property to "[NULL]" so that null values in any
        ' cell for all columns is displayed the same way.
        rootColumnSet.NullText = "[NULL]"

        ' Show sort indicators for all columns
        rootColumnSet.ShowSortIndicators = DefaultableBoolean.True
    End Sub
C#Copy Code
using Infragistics.Win;
using Infragistics.Win.Layout;
using Infragistics.Win.UltraWinTree;
using System.Diagnostics;

       private void button1_Click(object sender, System.EventArgs e)
       {
           
           UltraTreeColumnSet rootColumnSet = this.ultraTree1.ColumnSettings.RootColumnSet;
           
           //    Disallow cell sizing for all columns in the Columns collection
           rootColumnSet.AllowCellSizing = LayoutSizing.None;

           //    Disallow cell span sizing for all columns in the Columns collection
           rootColumnSet.AllowCellSpanSizing = GridBagLayoutAllowSpanSizing.None;

           //    Disallow moving for all columns in the Columns collection
           rootColumnSet.AllowColMoving = GridBagLayoutAllowMoving.None;

           //    Disallow header sizing for all columns in the Columns collection
           rootColumnSet.AllowLabelSizing = LayoutSizing.None;

           //    Disallow header span sizing for all columns in the Columns collection
           rootColumnSet.AllowLabelSpanSizing = GridBagLayoutAllowSpanSizing.None;

           //    Disallow sorting for all columns in the Columns collection
           rootColumnSet.AllowSorting = DefaultableBoolean.False;

           //    Don't display cell borders for any columns in the Columns collection
           rootColumnSet.BorderStyleCell = UIElementBorderStyle.None;

           //    Don't display header borders for any columns in the Columns collection
           rootColumnSet.BorderStyleColumnHeader = UIElementBorderStyle.None;

           //    Set the BackColor for all cells in all columns to 'Control'
           rootColumnSet.CellAppearance.BackColor = SystemColors.Control;

           //    Set CellWrapText to False to prevent text from
           //    wrapping to additional lines in all columns
           rootColumnSet.CellWrapText = DefaultableBoolean.False;

           //    Set ColumnAutoSizeMode to 'VisibleNodes' so that when the end
           //    user auto-sizes a column, only currently visible cells are considered
           rootColumnSet.ColumnAutoSizeMode = ColumnAutoSizeMode.VisibleNodes;

           //    Set the HeaderStyle property to 'Standard', so that column headers
           //    are not themed, and set the BackColor of the ColumnHeaderAppearance
           //    to 'ControlDark'.
           rootColumnSet.HeaderStyle = HeaderStyle.Standard;
           rootColumnSet.ColumnHeaderAppearance.BackColor = SystemColors.ControlDark;

           //    Change the size of images displayed in the headers to 20w X 20h
           rootColumnSet.ColumnHeaderImageSize = new Size( 20, 20 );

           //    If there is currently no ExpansionIndicatorColumn, set the
           //    CanShowExpansionIndicator property to true for the
           //    'CompanyName' column
           if ( rootColumnSet.ExpansionIndicatorColumn == null )
               rootColumnSet.Columns["CompanyName"].CanShowExpansionIndicator = DefaultableBoolean.True;

           //    Set the LabelPosition property ot display headers on top of cells,
           //    and set the LabelStyle property to display headers and cells
           //    separately.
           rootColumnSet.LabelPosition = NodeLayoutLabelPosition.Top;
           rootColumnSet.LabelStyle = NodeLayoutLabelStyle.Separate;

           //    Assign the 'CompanyName' column to the NodeTextColumn property,
           //    so that the value of the Text property is obtained from the cell
           //    in the 'CompanyName' column.
           rootColumnSet.NodeTextColumn = rootColumnSet.Columns["CompanyName"];

           //    Set the NullText property to "[NULL]" so that null values in any
           //    cell for all columns is displayed the same way.
           rootColumnSet.NullText = "[NULL]";

           //    Show sort indicators for all columns
           rootColumnSet.ShowSortIndicators = DefaultableBoolean.True;            
       }

See Also