Call the. net dll generated by C # In VB and ASP

Http://blog.csdn.net/KimmKing/archive/2008/12/04/3445233.aspx

 

Abstract: This article describes how to call the. net dll generated by C # In VB and ASP.
 
1. Use C # To create. Net DLL
1.1 create a project
Create a new project in. Net: testcom.

1.2 implement C # class
Add an interface and a class in the class1.cs file: using system;
Using system. Collections. Generic;
Using system. text;
Using system. runtime. interopservices;

Namespace testcom
{
[Comvisible (true)]
Public interface iclass1
{
String test ();
}

[Comvisible (true)]
[Classinterface (classinterfacetype. autodual)]
Public class class1: iclass1
{
Public String test ()
{
Return "OK ";
}

}
}

Note that attributes on interfaces and classes are visible to and generated for com.
1.3 Add a strong name
Select the vistual studio command prompt under vistual Studio Tools under the vistual studio directory in the Start Menu. Use Sn-k c:/mykey. SNK to generate the signature file. Right-click the project, click Properties, select Signature, select the Assembly signature, and select the mykey. SNK file.

1.4 generate a solution
You can find testcom. dll in/testcom/bin/debug of the project directory. So far, the. net dll generated by C # has been completed.
2 generate and register a Type Library
2.1 generate a TLB Library
In the Visual Studio command prompt, switch to this directory. Enter tlbexp testcom. dll/out: testcom. TLB. A message is displayed, indicating that the TLB library file is exported successfully.
 

2.2 register a Type Library
Enter regasm testcom. dll/TLB: testcom. TLB/codebase to import the Type Library to the Registry. A message indicating that the type is successfully registered indicates that the operation is successful. In this case, testcom. dll can be used as a COM.

2.3 add DLL to GAC
Enter gacutil/I testcom. dll and set this. netProgramSet to GAC.
3 VB call Test
3.1 create a VB Project
Create a standard EXE project in VB. Select reference from the project menu, and find testcom in the pop-up reference COM Object List.
Drag and Drop a button on the form, double-click the button, and enterCode:
Dim A as new testcom. class1
Msgbox A. Test
 

3.2 run the program
Start the project and click the button to bring up the dialog box "OK", indicating that the call is successful.
 
 
4 ASP call Test
4.1 create an ASP file
Create a text file in the root directory of IIS and change it to 1.asp. enter the following content:
<%
Set S = Createobject ("testcom. class1 ")
Response. Write (S. Test ())
%>

4.2 run the program
Access this file in IE, and the page output is OK, indicating that the call is successful.