字符串的视觉基本搜索文本,以适当的大小写显示结果

visual basic search text for string, display results with propercase

...databox.text(来自下面的示例代码)包含以前在程序中填充的大量组合词(域名)。每行有 1 个。在此示例中,它最初看起来像:

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

下面的代码将数据框内的文本保存到 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,然后填充listview(lv) 与结果。这工作得很好,但结果看起来像:

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

但我需要的是 "found string"(来自 arr()list 的正确大小写,因此结果将是:

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

有没有办法即时执行此操作?我试过 StrConv 等,但它只会将整行转换为正确的大小写。我只想转换行中包含的 "found" 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

对此:

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

得到了想要的结果!

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Class

例如,我不确定是否需要在中间步骤中使用文件并在最后删除它们。

  • 第一步:获取输入的行
    这可以通过使用数据箱的 Lines 属性 来完成(我怀疑它是 TextBoxRichTextBox ;如果不是这样,我们仍然可以使用 Split文本 属性)

    Dim lines = databox.Lines ' or databox.Text.Split({Environment.NewLine}, StringSplitOptions.RemoveEmptyEntries)
    
  • 第二步:我们要过滤那些行,只保留包含搜索文本的行
    为此有几种方法,一个简单的方法是使用 Linq 查询来完成工作
  • 第三步:将筛选结果替换为大写形式的搜索文本
    所以我们继续开始的查询并添加一个投影(或映射)来进行转换。
    为此,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