Public Default Property Item( _
   ByVal index As Integer _
) As String

Dim instance As TabInfo
Dim index As Integer
Dim value As String
 
instance.Item(index) = value
 
value = instance.Item(index)

public string this[ 
   int index
]; {get; set;}

FpSpread1.Sheets.Count = 3; 
FpSpread1.Tab.ActiveTabBackColor = Color.Yellow; 
FpSpread1.Tab.ActiveTabBorderColor = Color.Red; 
FpSpread1.Tab.FirstVisibleTab = 1; 
FpSpread1.Tab[0] = "First"; 
FpSpread1.Tab[1] = "Second"; 
FpSpread1.Tab[2] = "Third"; 
FpSpread1.Tab.TextColor = Color.Red; 
FpSpread1.Tab.TabControlPolicy = FarPoint.Web.Spread.TabControlPolicy.Always; 
FpSpread1.Tab.VisibleCount = 2; 
FpSpread1.Tab.ScrollIncrement = 2; 
ListBox1.Items.Add(FpSpread1.Tab.Count.ToString()); 

FpSpread1.Sheets.Count = 3
FpSpread1.Tab.ActiveTabBackColor = Color.Yellow
FpSpread1.Tab.ActiveTabBorderColor = Color.Red
FpSpread1.Tab.FirstVisibleTab = 1
FpSpread1.Tab.Item(0) = "First"
FpSpread1.Tab.Item(1) = "Second"
FpSpread1.Tab.Item(2) = "Third"
FpSpread1.Tab.TextColor = Color.Red
FpSpread1.Tab.TabControlPolicy = FarPoint.Web.Spread.TabControlPolicy.Always
FpSpread1.Tab.VisibleCount = 2
FpSpread1.Tab.ScrollIncrement = 2
ListBox1.Items.Add(FpSpread1.Tab.Count)