VB.NET自动加载.xla文件

Public Function Loadxla(ByVal xlaPath As String,ByVal load As Boolean) As Boolean
        Dim loaded As Boolean = False
        Try
            If (File.Exists(xlaPath)) Then
                Dim o As Object
                o = XlApp.AddIns.Add(xlaPath,True)  '定义成object,add by danielinbiti

                o.Installed = load
                loaded = o.Installed
            End If
        Catch
            loaded = False
        End Try
        Loadxla = loaded
    End Function

Loadxla("E:\selfh.xla",True)