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.NET and JavaScript UI Controls
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Active Property

Property that gets/sets whether this tab is the ActiveTab.
Syntax
'Declaration
 
Public Property Active As Boolean
public bool Active {get; set;}
Example
The following sample code illustrates how to scroll tabs and access tabs through the VisibleTabs collection.

Imports Infragistics.Win
Imports Infragistics.Win.UltraWinTabs
Imports Infragistics.Win.UltraWinTabControl

Private Sub button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button7.Click

    ' Call the scroll method to cause tabs to scroll.
    ' Note: this does not change the ActiveTab or the
    ' SelectedTab even if they end up being scrolled
    ' out of view
    Me.ultraTabControl1.Scroll(ScrollType.Next)

    ' The following code will cause the tab to be scrolled
    ' completely into view. If it was already in view
    ' the method does nothing.
    Me.ultraTabControl1.VisibleTabs(2).EnsureTabInView()

    Dim sb As System.Text.StringBuilder
    Dim tab As UltraTab

    ' Loop over the 'VisibleTabs'. This collection contains
    ' the same tabs as in the 'Tabs' collection but maintains
    ' them in the order they are displayed visually. This
    ' includes tabs whose 'Visible' property is false.
    For Each tab In Me.ultraTabControl1.VisibleTabs

        sb = New System.Text.StringBuilder()

        ' Check to see if this is the first displayed tab
        If tab Is Me.ultraTabControl1.FirstDisplayedTab Then

            sb.Append("First displayed tab: ")

        End If

        ' The Key property returns the key of the tab. The Tabs 
        ' collection exposes an indexer that will return the
        ' tab based on its key value. For example
        'Dim optionsTab As UltraTab = Me.ultraTabControl1.Tabs("Options")
        sb.Append("Key: ")
        sb.Append(tab.Key)

        ' The Text property returns the text that will be displayed
        ' on the tab
        sb.Append(", Text: ")
        sb.Append(tab.Text)

        ' The Index property returns the zero-based index of
        ' the tab in the Tabs collection
        sb.Append(", Index: ")
        sb.Append(tab.Index)

        ' The VisisbleIndex property returns the zero-based 
        ' index of the tab in the VisibleTabs collection
        sb.Append(", VisibleIndex: ")
        sb.Append(tab.VisibleIndex)

        ' The Visible property determines if the tab is 
        ' displayed or hidden.
        sb.Append(", Visible: ")
        sb.Append(tab.Visible)

        ' The Enabled property determines if the tab can
        ' be selected.
        sb.Append(", Enabled: ")
        sb.Append(tab.Enabled)

        ' The IsInView property returns true only if the tab
        ' is completely in view
        sb.Append(", IsInView: ")
        sb.Append(tab.IsInView)

        ' The IsHotTracked property returns true only if the
        ' mouse is over the tab and the control's HotTrack
        ' property is true.
        ' Note: The 'IsHotTracked' compares the tab
        ' with the tab returned from the HotTrackedTab
        ' property (tab Is this.ultraTabControl1.HotTrackedTab).
        sb.Append(", IsHotTracked: ")
        sb.Append(tab.IsHotTracked)

        ' The Selected property returns true if this is
        ' the selected tab. This property can be set but
        ' only to true. It throws an error if set to false.
        sb.Append(", is the selected tab: ")
        sb.Append(tab.Selected)

        ' The Active property returns true if this is
        ' the active tab. This property can be set but
        ' only to true. It throws an error if set to false.
        sb.Append(", is the active tab: ")
        sb.Append(tab.Active)

        ' The 'IsMultiRow' property returns true if the
        ' 'Style' property is set to a multi-row style.
        If Me.ultraTabControl1.IsMultiRow = True Then

            ' The RowNumber property returns the 1-based
            ' overall row number (including rows that are
            ' scrolled out of view).
            sb.Append(", RowNumber: ")
            sb.Append(tab.RowNumber)

        End If

        Debug.WriteLine(sb.ToString())

    Next

End Sub
using System.Diagnostics;
using Infragistics.Win;
using Infragistics.Win.UltraWinTabs;
using Infragistics.Win.UltraWinTabControl;

private void button7_Click(object sender, System.EventArgs e)
{
	// Call the scroll method to cause tabs to scroll.
	// Note: this does not change the ActiveTab or the
	// SelectedTab even if they end up being scrolled
	// out of view
	this.ultraTabControl1.Scroll( ScrollType.Next );

	// The following code will cause the tab to be scrolled
	// completely into view. If it was already in view
	// the method does nothing.
	this.ultraTabControl1.VisibleTabs[2].EnsureTabInView();

	System.Text.StringBuilder sb;

	// Loop over the 'VisibleTabs'. This collection contains
	// the same tabs as in the 'Tabs' collection but maintains
	// them in the order they are displayed visually. This
	// includes tabs whose 'Visible' property is false.
	foreach ( UltraTab tab in this.ultraTabControl1.VisibleTabs )
	{
		sb = new System.Text.StringBuilder();

		// Check to see if this is the first displayed tab
		if ( tab == this.ultraTabControl1.FirstDisplayedTab )
			sb.Append("First displayed tab: ");

		// The Key property returns the key of the tab. The Tabs 
		// collection exposes an indexer that will return the
		// tab based on its key value. For example;
		//UltraTab optionsTab = this.ultraTabControl1.Tabs["Options"];
		sb.Append( "Key: " );
		sb.Append( tab.Key );
		
		// The Text property returns the text that will be displayed
		// on the tab
		sb.Append( ", Text: " );
		sb.Append( tab.Text );

		// The Index property returns the zero-based index of
		// the tab in the Tabs collection
		sb.Append( ", Index: " );
		sb.Append( tab.Index );
		
		// The VisisbleIndex property returns the zero-based 
		// index of the tab in the VisibleTabs collection
		sb.Append( ", VisibleIndex: " );
		sb.Append( tab.VisibleIndex );
		
		// The Visible property determines if the tab is 
		// displayed or hidden.
		sb.Append( ", Visible: " );
		sb.Append( tab.Visible );
		
		// The Enabled property determines if the tab can
		// be selected.
		sb.Append( ", Enabled: " );
		sb.Append( tab.Enabled );

		// The IsInView property returns true only if the tab
		// is completely in view
		sb.Append( ", IsInView: " );
		sb.Append( tab.IsInView );

		// The IsHotTracked property returns true only if the
		// mouse is over the tab and the control's HotTrack
		// property is true.
		// Note: The 'IsHotTracked' compares the tab
		// with the tab returned from the HotTrackedTab
		// property (tab == this.ultraTabControl1.HotTrackedTab).
		sb.Append( ", IsHotTracked: " );
		sb.Append( tab.IsHotTracked );

		// The Selected property returns true if this is
		// the selected tab. This property can be set but
		// only to true. It throws an error if set to false.
		sb.Append( ", is the selected tab: " );
		sb.Append( tab.Selected );

		// The Active property returns true if this is
		// the active tab. This property can be set but
		// only to true. It throws an error if set to false.
		sb.Append( ", is the active tab: " );
		sb.Append( tab.Active );

		// The 'IsMultiRow' property returns true if the
		// 'Style' property is set to a multi-row style.
		if ( this.ultraTabControl1.IsMultiRow )
		{
			// The RowNumber property returns the 1-based
			// overall row number (including rows that are
			// scrolled out of view).
			sb.Append( ", RowNumber: " );
			sb.Append( tab.RowNumber );
		}

		Debug.WriteLine(sb.ToString());
	}
}
Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also