StringDictionary.ContainsKey Method determines if the StringDictionary contains a specific key.
Imports System Imports System.Collections Imports System.Collections.Specialized Public Class SamplesStringDictionary Public Shared Sub Main() Dim myCol As New StringDictionary() myCol.Add("red", "R") myCol.Add("green", "G") myCol.Add("blue", "B") If myCol.ContainsKey("red") Then Console.WriteLine("The collection contains the key ""red"".") Else Console.WriteLine("The collection does not contain the key ""red"".") End If End Sub 'Main End Class