C# 如何调用VB6.0编写的dll

C# 如何调用VB6.0编写的dll
/*---------------VB Dll代码如下-------------------------*/
 

VERSION 1.0 CLASS
BEGIN
  MultiUse = -1  'True
  Persistable = 0  'NotPersistable
  DataBindingBehavior = 0  'vbNone
  DataSourceBehavior  = 0  'vbNone
  MTSTransactionMode  = 0  'NotAnMTSObject
END
Attribute VB_Name = "Class1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = True
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = True

Public Function jia(a As Integer, b As Integer, c As Integer) As Boolean
   
   
    
  If a = 1 And b = 2 And c = 3 Then
 
   
   jia = True
   
  End If
    
End Function
//////////////////////////////////////////////////

 调用步骤如下：

1.       Copy *.dll to windows\system32

2.       注册*.dll (在system32目录下运行regsvr32 *.dll)

3.       C# project 添加引用，在COM组件里可以找到已经注册的*.dll组件名称，选中后点击确定

4.       C# 添加 using *

/*------------------------C# 调用代码如下-----------------------------------*/

private void button1_Click(object sender, EventArgs e)
        {
            jiafa.Class1 add = new Class1();
            if (add.jia(1, 2, 3))
                MessageBox.Show("成功调用VB dll");
        }