汉字拼音的一个完整解决方法！

For Each s As Char In line.ToCharArray
If IsTrue(s) Then
mBuilder.Append(GetPinyin(s, isgetfirst))
Else
mBuilder.Append(s)
End If
Next

Return mBuilder.ToString
End Function

Private Function GetPinyin(ByVal word As String, ByVal isgetfirst As Boolean) As String
Dim mResult As String = word

Dim mArray As String() = PinYinArray(ChineseCode(word)) '取拼音组
If Not mArray Is Nothing Then
If mArray.Length = 1 Or isgetfirst Then
mResult = mArray(0) '单音的
Else

mResult = String.Format("({0})", String.Join(",", mArray)) '多音的用括号括住,拼音间用逗号隔开
End If
End If

Return mResult
End Function

'取拼音组
Private Function PinYinArray(ByVal code As String) As String()
Dim mRow As dsPinYin.PinYinRow = Me.gDataSet.PinYin.FindBy代码(code)
If mRow Is Nothing Then Return Nothing

Return mRow.拼音.Split(" "c)
End Function

''' ＜summary＞
''' 按拼音查字
''' ＜/summary＞
''' ＜param name="pinyin"＞拼音＜/param＞
Public Function WordArray(ByVal pinyin As String) As String()
Dim mRows As dsPinYin.PinYinRow() = CType(Me.gDataSet.PinYin.Select(String.Format("拼音 LIKE '%{0}%'", pinyin)), dsPinYin.PinYinRow())
Dim mResult(-1) As String
For i As Integer = 0 To mRows.Length - 1
If Array.IndexOf(mRows(i).拼音.Split(" "c), pinyin) ＜＞ -1 Then
Me.Append(mResult, mRows(i).汉字)
End If
Next
Return mResult
End Function

''' ＜summary＞
''' 按拼音查字
''' ＜/summary＞
''' ＜param name="pinyin"＞拼音＜/param＞
Public Function Words(ByVal pinyin As String) As String
Return String.Concat(WordArray(pinyin))
End Function


''' ＜summary＞
''' 汉字代码
''' ＜/summary＞
''' ＜param name="word"＞单个汉字＜/param＞
Public Shared Function ChineseCode(ByVal word As String) As String
If Not IsTrue(word) Then Return Nothing

Dim bytes() As Byte = System.Text.Encoding.Default.GetBytes(word)

Return String.Concat(Hex(bytes(0)), Hex(bytes(1)))
End Function

''' ＜summary＞
''' 是否是单个汉字
''' ＜/summary＞
''' ＜param name="word"＞字符＜/param＞
Public Shared Function IsTrue(ByVal word As String) As Boolean
If word Is Nothing Then Return False

Return System.Text.RegularExpressions.Regex.IsMatch(word, "^[\u4e00-\u9fa5]$")
End Function

Private Sub Append(ByRef collection As String(), ByVal value As String)
ReDim Preserve collection(collection.Length)
collection(collection.Length - 1) = value
End Sub
End Class
End Namespace

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