VB 问题，关于如何将非英文及数字的字符转换成URL编码？

添加两个text，和一个按钮，点按钮之后text1的内容就会转换为UTF-8的URL编码Function GBtoUTF8(szInput)
Dim wch, uch, szRet
Dim x
Dim nAsc, nAsc2, nAsc3'如果输入参数为空，则退出函数
If szInput = "" Then
GBtoUTF8 = szInput
Exit Function
End If'开始转换
For x = 1 To Len(szInput)
wch = Mid(szInput, x, 1)
nAsc = AscW(wch)If nAsc < 0 Then nAsc = nAsc + 65536If (nAsc And &HFF80) = 0 Then
szRet = szRet & wch
Else
If (nAsc And &HF000) = 0 Then
uch = "%" & Hex(((nAsc \ 2 ^ 6)) Or &HC0) & Hex(nAsc And &H3F Or &H80)
szRet = szRet & uch
Else
uch = "%" & Hex((nAsc \ 2 ^ 12) Or &HE0) & "%" & _
Hex((nAsc \ 2 ^ 6) And &H3F Or &H80) & "%" & _
Hex(nAsc And &H3F Or &H80)
szRet = szRet & uch
End If
End If
Next
GBtoUTF8 = szRet
End Function
Private Sub Command1_Click()
Text2.Text = GBtoUTF8(Text1.Text)
End Sub