本文整理匯總了VB.NET中System.Collections.Generic.Dictionary<TKey,TValue>.TryGetValue方法的典型用法代碼示例。如果您正苦於以下問題：VB.NET Dictionary<TKey,TValue>.TryGetValue方法的具體用法？VB.NET Dictionary<TKey,TValue>.TryGetValue怎麽用？VB.NET Dictionary<TKey,TValue>.TryGetValue使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Collections.Generic.Dictionary<TKey,TValue>的用法示例。
在下文中一共展示了Dictionary<TKey,TValue>.TryGetValue方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1:
' When a program often has to try keys that turn out not to
' be in the dictionary, TryGetValue can be a more efficient
' way to retrieve values.
Dim value As String = ""
If openWith.TryGetValue("tif", value) Then
Console.WriteLine("For key = ""tif"", value = {0}.", value)
Else
Console.WriteLine("Key = ""tif"" is not found.")
End If示例2: openWith
' The default Item property throws an exception if the requested
' key is not in the dictionary.
Try
Console.WriteLine("For key = ""tif"", value = {0}.", _
openWith("tif"))
Catch
Console.WriteLine("Key = ""tif"" is not found.")
End Try