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How to use For/Each Technology in VB.NET

2025-02-28 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >

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This article mainly shows you "how to use For/Each technology in VB.NET". The content is simple and clear. I hope it can help you solve your doubts. Let me lead you to study and learn this article "how to use For/Each technology in VB.NET".

When most of our developers are doing VB.NET development, when they encounter loop operations, they may think of VB.NET For/Next applications for * time. However, in some special cases, you can use VB.NET For/Each to traverse elements in an array or collection.

The VB.NET For/Each statement is written as follows:

For Each item In

Array or Collection

[statements]

Next

Example 2.10 (02-10.aspx) uses VB.NET For/Each to display all the data in an array.

< % Dim arrData(3) Dim stritem as string arrData(0)="Beijing" arrData(1)="Shanghai" arrData(2)="Guangzhou" For Each stritem In arrData Response.Write (stritem & "< br>

")

Next

% >

As you can see, the difference between a VB.NET For/Each ring and a For/Next loop is that you need to specify the number of cycles in the For/Next loop, while you don't need to do this in the For/Each loop to iterate through all the contents of an array or collection. It is also important to note that this loop is usually used in collections.

The above is all the contents of the article "how to use For/Each Technology in VB.NET". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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