3 replies to this topic

[hiren_5kin]

Hi,
I wanted to know how to call a C# dll using Installscript in InstallShield Developer 8.

Thanx In Advance

[chrpai]

Using developer 8 would be very difficult. Two approaches that I can think of:

1) Derive the C# class from the Installer class and then manually wire your custom actions using InstallUtil. Not really reccommended

2) Use COM Interop to create the C# class using CoCreateObject() in InstallScript or CreateObject in a script CA ( VB/J). This is problematic in that you must first install and register the interop before you can invoke it.

If you can manage to upgrade to InstallShield 12 life gets ALOT easier as discussed in several of my blog articles. You simply set your assembly to be COMVisible(true), drop it in your SUPPORTDIR and use CoCreateObjectDotNet() in InstallScript to instantiate your class. No installation or registration of the COM is required.

[hiren_5kin]

Thanx very much
Can you give me the example of the 2) part it would be really helpfull

Thanx

[shankx]

prototype STRING Edusmconn.GetSMData(BYREF STRING, BYREF STRING, BYREF STRING);

// in some event handler onbegin or onfirstuiafter stc.
// create object of class (assemblyname,classname)

try
szDll = SystemFolder^"Edusmconn.dll";
szClass = "Scoremore.Edusmconn";
set oConn = CoCreateObjectDotNet(szDll, szClass);
if (!IsObject(oConn)) then
MessageBox("Object Creation Failed",SEVERE);
endif;
catch
nErr = Err.Number;
szError = Err.Source;
NumToStr(szErr, nErr);
MessageBox(szError + " Failed EdusmConn", SEVERE);
EndDialog(szDlg);
ReleaseDialog(szDlg);
abort;
endcatch;
sResult = oConn.GetSMData(szTemp, szPSeed, szURL);
// call the method by .NETobject.Methodname