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FirstSelectableTab Property

Returns the first UltraTab object in the collection whose Visible and Enabled properties are both true.
Syntax
'Declaration
 
Public ReadOnly Property FirstSelectableTab As UltraTab
public UltraTab FirstSelectableTab {get;}
Remarks
If no tab has its Enabled property set to true then the first tab whose Visible property is true will be returned. If no tab has its Visible property set to true then null is returned.
Example
The following sample code illustrates how to sort tabs through the VisibleTabs collection.

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

Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click

    ' The VisibleTabs collection exposes a Sort method
    ' with 3 overloads.

    ' Calling the method without any parameters will do
    ' an ascending case-sensitive sort based on the
    ' tabs' Text values.
    Me.ultraTabControl1.VisibleTabs.Sort()

    ' The second overload allows you to specify whether
    ' to sort ascending or descending based on the 
    ' tabs' (case-sensitive) Text values
    Me.ultraTabControl1.VisibleTabs.Sort(SortDirection.Descending)

    ' The third overload allows you to specify a custom
    ' comparer. In this case, a comparer that will do a 
    ' case-insensitive sort.
    Me.ultraTabControl1.VisibleTabs.Sort(New MyTabComparer(SortDirection.Descending))

    ' Calling the Sort method affects tab placement in the
    ' 'VisibleTabs' collection and changes each tab's 'VisibleIndex'
    ' property but does not affect the tab's 'Index' property or
    ' its position in the 'Tabs' collection.

    ' Tab placement in the 'VisibleTabs' collection can
    ' also be changed by setting the tab's 'VisibleIndex'
    ' property or calling its 'Reposition' method
    Dim utab As UltraTab = Me.ultraTabControl1.Tabs(2)
    utab.VisibleIndex = 0
    utab.Reposition(Me.ultraTabControl1.Tabs(1), RelativePosition.Before)

    ' The 'VisibleTabs' collection also exposes properties and
    ' methods for filtering out non-selectable tabs, i.e. tabs
    ' whose 'Visible' or 'Enabled' property is set to false.
    utab = Me.ultraTabControl1.VisibleTabs.FirstSelectableTab
    utab = Me.ultraTabControl1.VisibleTabs.LastSelectableTab
    utab = Me.ultraTabControl1.VisibleTabs.GetNextSelectableTab(utab, True)
    utab = Me.ultraTabControl1.VisibleTabs.GetPreviousSelectableTab(utab, True)

    ' Note: the 2nd parameter to the method calls above specifies
    ' whether to wrap around when the last or first selectable tab
    ' is passed in.

End Sub

Private Class MyTabComparer
    Implements IComparer

    Private direction As SortDirection

    Public Sub New(ByVal direction As SortDirection)

        Me.direction = direction

    End Sub

    Public Function Compare(ByVal x As Object, ByVal y As Object) As Integer Implements System.Collections.IComparer.Compare

        Dim tab1 As UltraTab = x
        Dim tab2 As UltraTab = y

        Dim string1 As String = tab1.Text
        Dim string2 As String = tab2.Text

        Dim ret As Integer

        If string1 Is Nothing Then
            ret = -1
        ElseIf string2 Is Nothing Then
            ret = 1
        Else
            ' Do a case-insensitive compare
            ret = String.Compare(string1, string2, True, System.Globalization.CultureInfo.CurrentCulture)
        End If

        ' If descending then flip the sign
        If Me.direction = SortDirection.Descending Then
            ret *= -1
        End If

        Return ret

    End Function

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

private void button9_Click(object sender, System.EventArgs e)
{
	// The VisibleTabs collection exposes a Sort method
	// with 3 overloads.

	// Calling the method without any parameters will do
	// an ascending case-sensitive sort based on the
	// tabs' Text values.
	this.ultraTabControl1.VisibleTabs.Sort();

	// The second overload allows you to specify whether
	// to sort ascending or descending based on the 
	// tabs' (case-sensitive) Text values
	this.ultraTabControl1.VisibleTabs.Sort( SortDirection.Descending );

	// The third overload allows you to specify a custom
	// comparer. In this case, a comparer that will do a 
	// case-insensitive sort.
	this.ultraTabControl1.VisibleTabs.Sort( new MyTabComparer(SortDirection.Descending) );

	// Calling the Sort method affects tab placement in the
	// 'VisibleTabs' collection and changes each tab's 'VisibleIndex'
	// property but does not affect the tab's 'Index' property or
	// its position in the 'Tabs' collection.

	// Tab placement in the 'VisibleTabs' collection can
	// also be changed by setting the tab's 'VisibleIndex'
	// property or calling its 'Reposition' method
	UltraTab tab = this.ultraTabControl1.Tabs[2];
	tab.VisibleIndex = 0;
	tab.Reposition( this.ultraTabControl1.Tabs[1], RelativePosition.Before );

	// The 'VisibleTabs' collection also exposes properties and
	// methods for filtering out non-selectable tabs, i.e. tabs
	// whose 'Visible' or 'Enabled' property is set to false.
	tab = this.ultraTabControl1.VisibleTabs.FirstSelectableTab;
	tab = this.ultraTabControl1.VisibleTabs.LastSelectableTab;
	tab = this.ultraTabControl1.VisibleTabs.GetNextSelectableTab( tab, true );
	tab = this.ultraTabControl1.VisibleTabs.GetPreviousSelectableTab( tab, true );
	
	// Note: the 2nd parameter to the method calls above specifies
	// whether to wrap around when the last or first selectable tab
	// is passed in.
}

private class MyTabComparer : IComparer
{
	private SortDirection direction;

	internal MyTabComparer( SortDirection direction )
	{
		this.direction = direction;
	}

	int IComparer.Compare(object x, object y)
	{
		UltraTab tab1 = x as UltraTab;
		UltraTab tab2 = y as UltraTab;

		string string1 = tab1.Text;
		string string2 = tab2.Text;

		int ret;

		if ( string1 == null )
			ret = -1;
		else				
		if ( string2 == null )
			ret = 1;
		else
		{
			// Do a case-insensitive compare
			ret	= string.Compare( string1, string2, true, System.Globalization.CultureInfo.CurrentCulture);
		}

		// If descending then flip the sign
		if ( this.direction == SortDirection.Descending )
			ret *= -1;

		return ret;
	}
}
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