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Visual Basic .NET Do...Loop

2024-04-15 02:08:03 410

示例

使用Do...Loop重复的语句块While或Until条件为真，一开始或在循环的末尾或者检查条件。

Dim x As Integer = 0
Do
    Console.Write(x & " ")
    x += 1
Loop While x < 10

要么

Dim x As Integer = 0
Do While x < 10
    Console.Write(x & " ")
    x += 1
Loop

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Dim x As Integer = 0
Do
    Console.Write(x & " ")
    x += 1
Loop Until x = 10

要么

Dim x As Integer = 0
Do Until x = 10
    Console.Write(x & " ")
    x += 1
Loop

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ContinueDo可用于跳到循环的下一个迭代：

Dim x As Integer = 0
Do While x < 10
    x += 1
    If x Mod 2 = 0 Then
        Continue Do
    End If
    Console.Write(x & " ")
Loop

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您可以使用ExitDo-终止循环-请注意，在此示例中，缺少任何条件都会导致无限循环：

Dim x As Integer = 0
Do
    Console.Write(x & " ")
    x += 1
    If x = 10 Then
        Exit Do
    End If
Loop

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