1. For...Next 循环 vb ' 基本 For 循环 For i = 1 To dingxi.web4.xn--v6qr1dhyrfmbz90f34akzt.cn Console.WriteLine("当前值: " & i) Next i ' 带步长的 For 循环 For i = 10 To 1 Step -1 Console.WriteLine("倒计时: " & i) Next i 2. Do While...Loop 循环 vb ' 前置条件检...
Think of a WHILE loop like this: "while something is true, keep going round and doing this block of code again and again". "While" loops can be used to achieve exactly the same as the "for" loop example above, but here is an example that has nothing to do with counting. This code...
1. For...Next 循环 用于已知循环次数的场景。 vb For counter = start To end [Step step] [statements] Next [counter] 示例: vb For i = 1 To 10 Console.WriteLine("当前值: " & i) Next i 2. Do While...Loop 循环 在条件为真时执行循环。 vb Do While condition [statements] Loop 或后...
Exit Dois often used after some condition is evaluated, for example in anIf...Then...Elsestructure. You might want to exit a loop if you detect a condition that makes it unnecessary or impossible to continue iterating, such as an erroneous value or a termination request. One use ofExit ...
Creating Your First For and For Each Loop In the same way that a do and a while loop are similar, for and for each loops also share a fair bit of similarities. In a for loop the basic structure is below. For counter [As datatype] = start To end [Step step] ...
Visual Basic 运行库成员 关键字 特性 常量和枚举 数据类型摘要 指令 函数 修饰符 模块 无 对象 运算符 属性 查询 语句 语句 A-E 语句 A-E 语句 AddHandler 语句 Call 语句 Class 语句 Const 语句 Continue 语句 Declare Statement Delegate 语句 Dim 语句 ...
如果 condition 是 Nothing,Visual Basic 會將它視為 False。 statements 選擇項。 當 (或直到) condition 為 True 時,一或數個被重複的陳述式。 Continue Do 選擇項。 為 Do 迴圈的下一個反覆項目控制權。 Exit Do 選擇項。 從 Do 迴圈當中傳出控制權。 Loop 必要項。 結束 Do 迴圈的定義。
Loop 必选。终止 Do 循环的定义。 备注 如果想重复执行一组语句不定的次数,直到满足了某个条件为止,则可使用 Do...Loop 结构。如果想重复执行语句既定的次数,则 For...Next 语句通常是更好的选择。 Do...Loop 结构在灵活性上比 While...End While 语句 (Visual Basic) 更强,这是因为,它允许您在 condit...
QQ阅读提供Visual Basic编程全能词典,前测型Do…Loop循环在线阅读服务,想看Visual Basic编程全能词典最新章节,欢迎关注QQ阅读Visual Basic编程全能词典频道,第一时间阅读Visual Basic编程全能词典最新章节!
public virtual void VisitLoopStatement(Microsoft.CodeAnalysis.VisualBasic.Syntax.LoopStatementSyntax node); 参数 node LoopStatementSyntax 适用于 产品版本 Roslyn 4.2.0, 4.3.0, 4.4.0, 4.5.0, 4.6.0, 4.7.0, 4.8.0, 4.9.2, 3.0.0, 3.1.0, 3.2.0, 3.2.1, 3.3.1, 3.4.0, 3.5.0,...