从文本文件中提取后操作数组

I've been thoroughly combing * and other sources for the answers to these problems, and have not been able to find a solution that would work cohesively with the steps I need to accomplish.

我已经彻底地搜索了*和其他来源，以获得这些问题的答案，但是还没有找到一个能够与我需要完成的步骤一致的解决方案。

Things I need to do:

我需要做的事情:

Create an array from a text file and display in a listbox (this is done and works)
从文本文件创建一个数组，并在列表框中显示(完成并工作)
Have user fill in a text box, click a button, and the array is searched for anything matching the text box's value
让用户填写一个文本框，单击一个按钮，然后数组被搜索到任何与文本框的值匹配的东西?
Have the results of the search displayed in a separate listbox
搜索结果是否显示在单独的列表框中

Here's what I've got so far, and it's fairly hacked together, so if there's anything that can be improved, naturally, I'd be all for that. `

这是我到目前为止所得到的，而且它是相当容易被破解的，所以如果有任何可以改进的东西，自然地，我将会完全支持它。”

Public Class Form1

Dim lblName As Object
Public colleges As String
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
    Dim colleges() As String = IO.File.ReadAllLines("Colleges.txt")
    ListBoxCollege.Items.AddRange(colleges)
End Sub

Private Sub btnSearchGo_Click(sender As Object, e As EventArgs) Handles btnSearchGo.Click
    Dim n As Integer, college As String
    college = txtCollegeSearchUserInput.Text
    n = Array.IndexOf(colleges(), college)
    If n <> 1 Then
        [[Needs to output into new listbox, preferably here]]
    End If
End Sub

If there's anything else needed from VB, I can provide if necessary!

如果VB还有什么需要的话，我可以提供。

1 个解决方案

#1

In your case you can do something like this

你可以这样做

For i As Integer = 0 To ListBoxCollege.Items.Count -1

    If ListBoxCollege.Items(i).ToString().IndexOf(college, StringComparison.OrdinalIgnoreCase) > -1 Then
        findList.Items.Add(ListBoxCollege.Items(i))
    End If

Next

The difference here - you calling IndexOf on array and I call it for each item in list. Therefore I return all matches, while you only the first one

这里的区别是——你调用数组上的IndexOf，我为列表中的每个条目调用它。所以我把所有的火柴都退回来了，而你只是第一个

This is little bit limited in search criteria. You could use regex as well for wild cards etc. Or you store your data (colleges) in System.Data.DataTable, and you would be able to run Sql Select queries on it almost like in database.

这在搜索条件上有一定的局限性。您可以将regex用于通配符等，也可以将数据(大学)存储在System.Data中。DataTable，您就可以在它上运行Sql Select查询，就像在数据库中一样。

#1