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[英]How to remove vb.net Richtextbox lines that not contains specific text?
[英]How to read Different lines of text in a RichTextBox
我想知道如何在 vb.net 中读取和转换 RichTextBox 的不同行,例如,如果这些是 RichTextBox 的行:
Hello
Hi
我怎样才能把它转换成类似的东西:
Yo(Hello)
Yo(Hi)
并将结果放在第二个富文本框中?
RichtextBox 有一个lines
属性:
Dim rtb_in As New RichTextBox
Dim rtb_out As New RichTextBox
For Each line In rtb_in.Lines
rtb_out.AppendText(String.Format("Foo({0})", line))
Next
查看 MSDN 以了解您使用的课程总是一个好主意......
您可以尝试在新行上拆分并修改结果:
Dim box1Lines as String() = richTextBox1.Text.Split(new String() { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries)
Dim newLines as String = ""
For Each line As String in box1Lines
newLines += "Yo(" & line & ")" & Environment.NewLine
Next
richTextBox2.Text = newLines
可能你应该使用String.Join
来完成它。 one line
解决方案是:
rtbOut.Lines = ("Yo(" & String.Join(")" & Environment.NewLine & "Yo(", rtbIN.Lines) & ")").Split(Environment.NewLine.ToCharArray, StringSplitOptions.RemoveEmptyEntries)
这是完整的代码,其中修改后的行被分配给第二个RichTextBox
:
Dim rtbIN As New RichTextBox
Dim rtbOut As New RichTextBox
rtbIN.Lines = New String() {"Hello ", "Hi"}
rtbOut.Lines = ("Yo(" & String.Join(")" & Environment.NewLine & "Yo(", rtbIN.Lines) & ")").Split(Environment.NewLine.ToCharArray, StringSplitOptions.RemoveEmptyEntries)
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