Question

... databox.text（来自下面的示例代码）包含先前在程序中填充的组合单词（域名）的大列表。每行1个。在这个例子中，它最初看起来像：

thepeople.com
truehistory.com
workhorse.com
whatever.com
neverchange.com
...

下面的代码将databox中的文本保存到tlistfiltered.txt，然后搜索tlistfiltered.txt以检索包含列表“arr（）”中任何项目的所有行，然后使用以下代码填充listview（lv）结果。这很好用，但结果如下：

thepeople.com
truehistory.com
neverchange.com
...

但我需要的是“找到的字符串”（来自arr（）列表是正确的情况所以结果将是：

thePeople.com
trueHistory.com
neverChange.com

这是代码......

 Dim s As String = databox.Text
        File.WriteAllText(dloc & "tlistfiltered.txt", s)
        databox.Clear()

        Dim text2() As String = System.IO.File.ReadAllLines(dloc & "tlistfiltered.txt")

        Dim arr() As String = {"people", "history", "change"}
        For index1 = 0 To arr.GetUpperBound(0)

            Dim YesLines() As String = Array.FindAll(text2, Function(str As String)

                                                                Return str.Contains(arr(index1))

                                                            End Function).ToArray

            databox.Visible = True
            For index2 = 0 To YesLines.GetUpperBound(0)
                Dim match As String = (YesLines(index2)) & vbCrLf

                                   databox.AppendText(match)
            Next
        Next
        s = databox.Text
        File.WriteAllText(dloc & "tlistfilteredfinal.txt", s)
        databox.Clear()
        domains = (From line In File.ReadAllLines(dloc & "tlistfilteredfinal.txt") Select New ListViewItem(line.Split)).ToArray
        lv.Items.Clear()
        My.Computer.FileSystem.DeleteFile(dloc & "tlistfiltered.txt")
        My.Computer.FileSystem.DeleteFile(dloc & "tlistfilteredfinal.txt")
        BackgroundWorker1.RunWorkerAsync()
    End Sub

有没有办法在飞行中这样做？我已经尝试过StrConv等，但它只会将整行转换为正确的情况。我只希望转换行中包含的“找到”单词....

编辑：

看到@soohoonigan的回答后，我编辑了

      databox.Visible = True
        For index2 = 0 To YesLines.GetUpperBound(0)
            Dim match As String = (YesLines(index2)) & vbCrLf

                               databox.AppendText(match)
        Next
    Next

到此：

databox.Visible = True
            For index2 = 0 To YesLines.GetUpperBound(0)
                Dim match As String = (YesLines(index2)) & vbCrLf
                Dim myTI As System.Globalization.TextInfo = New System.Globalization.CultureInfo("en-US", False).TextInfo
                If match.Contains(arr(index1)) Then
                    match = match.Replace(arr(index1), myTI.ToTitleCase(arr(index1)))
                    'StrConv(match, vbProperCase)
                    databox.AppendText(match)
                End If
            Next

并获得了理想的结果！

Answer 1

Public Class Form1

Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
    Dim test As String = "thepeople.com"
    Dim search As String = "people"
    Dim myTI As System.Globalization.TextInfo = New System.Globalization.CultureInfo("en-US", False).TextInfo
    If test.Contains(search) Then
        test = test.Replace(search, myTI.ToTitleCase(search))
        MsgBox(test)
    End If
    Me.Close()
End Sub

结束班

Answer 2

我不确定是否需要将文件用于中间步骤并在最后删除它们。例如。

第一步：获取输入的行这可以通过使用数据库的Lines属性来完成（我怀疑它是TextBox或RichTextBox;如果不是这样，我们仍然可以在Text属性上使用Split
```
Dim lines = databox.Lines ' or databox.Text.Split({Environment.NewLine}, StringSplitOptions.RemoveEmptyEntries)
```
第二步：我们想要过滤那些行，只保留包含搜索文本的那些行为此，有几种方法，一种简单的方法是使用Linq查询来完成工作

第三步：转换过滤器的结果，用它的大写形式替换搜索到的文本因此，我们继续启动查询并添加投影（或映射）以进行转换我们需要使用TextInfo.ToTitleCase。

' See soohoonigan answer if you need a different culture than the current one
Dim textInfo = System.Globalization.CultureInfo.CurrentCulture.TextInfo

Dim query = From word in arr
            From line in lines
            Where line.Contains(word)
            Let transformed = line.Replace(word, textInfo.ToTitleCase(word))
            select transformed
' We could omit the Let and do the Replace directly in the Select Clause

字符串的可视基本搜索文本，使用正确的

2 个答案: