实现函数代码：
Function BrowseForFile()
Set fso=CreateObject("Scripting.FileSystemObject")
Set tempFile=fso.CreateTextFile("tmpfile.hta")
tempFile.Write _
"<html>" & Chr(13) & Chr(10) & _
"<head>" & Chr(13) & Chr(10) & _
"<title>Browse</title>" & Chr(13) & Chr(10) & _
"</head>" & Chr(13) & Chr(10) & _
"<body>" & Chr(13) & Chr(10) & _
"<input type='file' id='file'/>" & Chr(13) & Chr(10) & _
"<script type='text/javascript'>" & Chr(13) & Chr(10) & _
"var ForReading=1;" & Chr(13) & Chr(10) & _
"var ForWriting=2;" & Chr(13) & Chr(10) & _
"var file = document.getElementById('file');" & Chr(13) & Chr(10) & _
"file.click();" & Chr(13) & Chr(10) & _
"var fso=new ActiveXObject('Scripting.FileSystemObject');" & Chr(13) & Chr(10) & _
"fpw=fso.CreateTextFile('tmpfilepath');" & Chr(13) & Chr(10) & _
"fpw.Write(file.value);" & Chr(13) & Chr(10) & _
"fpw.close();" & Chr(13) & Chr(10) & _
"window.close();" & Chr(13) & Chr(10) & _
"</script>" & Chr(13) & Chr(10) & _
"</body>" & Chr(13) & Chr(10) & _
"</html>"
tempFile.Close
Set shell=CreateObject("WScript.Shell")
shell.Run "tmpfile.hta",0,True
Set tempFile=fso.GetFile("tmpfilepath")
If tempFile.size>0 Then
Set tempFile=fso.OpenTextFile("tmpfilepath",1,false)
BrowseForFile=tempFile.ReadAll
tempFile.close
Else
BrowseForFile=""
End If
Set tempFile=fso.GetFile("tmpfile.hta")
tempFile.attributes=0
tempFile.delete
Set tempFile=fso.GetFile("tmpfilepath")
tempFile.attributes=0
tempFile.delete
Set shell=Nothing
Set fso=Nothing
End Function
具体调用方法：
Dim selpath
selpath=BrowseForFile()
If selpath <> "" Then
MsgBox("你已经选择的文件"&selpath)
Else
MsgBox("你还没有选择文件")
End If