vb.net - 多维数组列表 [英] vb.net - multi-dimension array list

问题描述

我已经设法制作了一些单维数组列表，但我无法找出多维数组列表.

I've managed to make some single dimension array lists but I can't figure out a multi dimension arraylist.

这是我想要做的:

我有一个包含 5 列的数据库 (mdb)，我希望每一行都在一个数组列表中.

I have a database (mdb) with 5 columns that I want each row to be in an array list.

在 PHP 中我通常会做的是:

In PHP what I'd typically do is:

$array[$field1] = array($field2,$field3,$field4,$field5);

$array[$field1] = array($field2,$field3,$field4,$field5);

我如何在 vb.net 中执行相同的操作，以便在需要为特定的 row1 获取项目时可以调用它?

How I do the same in vb.net so anytime I need to fetch an item for a specific for the row1 I could call it?

对于单个维度，我可以执行以下操作，但我不知道如何向单个数组行添加更多字段:

For a single dimension I could do the following, but I can't figure out how to add more fields to a single array row:

    Dim tmpArrayX As New ArrayList
    tmpArrayX.Add(field(0))
    tmpArrayX.Add(field(1))
    etc...

推荐答案

如果你想使用ArrayList，只要让它的item包含其他ArrayList即可.

If you want to use ArrayList, just make it's items contain other ArrayLists.

或者你可以使用普通数组:

Or you could use normal arrays as:

Dim multiArray(2, 2) As String
multiArray(0, 0) = "item1InRow1"
multiArray(0, 1) = "item2InRow1"
multiArray(1, 0) = "item1InRow2"
multiArray(1, 1) = "item2InRow2"

虽然我个人更喜欢使用 List 作为:

Though my personal preference would be to use List as:

Dim multiList As New List(Of List(Of String))
multiList.Add(New List(Of String))
multiList.Add(New List(Of String))

multiList(0).Add("item1InRow1")
multiList(0).Add("item2InRow1")
multiList(1).Add("item1InRow2")
multiList(1).Add("item2InRow2")

如何查找行:

Dim listIWant As List(Of String) = Nothing
For Each l As List(Of String) In multiList
    If l.Contains("item1InRow2") Then
        listIWant = l
        Exit For
    End If
Next

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