如何進一步優化此正則表達式？

Question

我剛剛編寫了以下正則表達式。 我在網頁上有一個微型富文本編輯器（非常類似於我用來發布此問題的文本編輯器），並且我想利用雙星號來指示應將哪些單詞/短語包裹在強標簽中。 目的是允許用戶添加預定義的HTML元素，而無需實際提交HTML。

這是它的單元測試：

<TestMethod()> Public Sub Regular_Expression_Replaces_Double_Asterix_With_Strong_Tags()

    'Arrange
    Dim originalString As String = "This the start of the text. **This should be wrapped with a strong tag**. But this part should **not**. ** Note: this part should be left alone since it isn't closed off."
    Dim htmlFormattedString As String = "This the start of the text. <strong>This should be wrapped with a strong tag</strong>. But this part should <strong>not</strong>. ** Note: this part should be left alone since it isn't closed off."

    'Act
    originalString = ItemTemplate.FormatTemplateToHtml(originalString)

    'Assert
    Assert.AreEqual(htmlFormattedString, originalString)

End Sub

這是工作代碼：

Public Shared Function FormatTemplateToHtml(ByVal value As String) As String

    Dim formattedValue As String = value
    Dim pattern As String = "(\*{2})(.*?)(\*{2})"
    Dim regExMatches As MatchCollection = Regex.Matches(value, pattern)

    For Each regExMatch As Match In regExMatches

        'This is the part I feel could be improved?
        Dim replaceableTag As String = regExMatch.Groups(0).Value
        Dim reformattedTag As String = String.Format("<strong>{0}</strong>", regExMatch.Groups(2).Value)
        formattedValue = formattedValue.Replace(replaceableTag, reformattedTag)

    Next

    Return formattedValue

End Function

也許我對此進行了過度優化，但是我想知道是否可以提高效率？

注意：我專業地使用VB.Net和C＃，因此即使該示例在VB.Net中（作為該項目的目標，正在使用VB.Net）， 也歡迎使用C＃答案 。

Answer 1

您為什么不只使用Replace方法？

Dim outputText As String =
    Regex.Replace(inputText, "\*{2}(.*?)\*{2}", "<strong>$1</strong>")