[mapguide-users] MGOS 4 - Creating Session

Greg Neff gbneff at cid.utah.gov
Wed Nov 5 13:23:01 PST 2025


MGOS 4 Final

Iis 10

.net 4.8



Working on moving a site to MGOS 4 and having trouble creating a session
using this code below which gives the following error:



*The type initializer for 'OSGeo.MapGuide.WebUnmanagedApiPINVOKE' threw an
exception.*



*public partial class Cid_Map : System.Web.UI.Page
<http://System.Web.UI.Page>*

*{*

*    public string webLayout = "Library://layouts/Cid_Map_Basic.WebLayout";*

*    public string defaultUser = "Anonymous";*

*    public string defaultPassword = "";*

*    public string sessionId = "";*



*    protected void Page_Load(object sender, EventArgs e)*

*    {*



*        try*

*        {*

*            string realPath =
Request.ServerVariables["APPL_PHYSICAL_PATH"];*

*            realPath = realPath.Replace(@"Cid_Map\", "");*

*            string configPath = realPath + "webconfig.ini";*

*            //Response.Write(configPath);*

*            MapGuideApi.MgInitializeWebTier(configPath);*

*            MgUserInformation userinfo = new
OSGeo.MapGuide.MgUserInformation(defaultUser, defaultPassword);*

*            MgSite site = new MgSite();*

*            site.Open(userinfo);*

*            sessionId = site.CreateSession();*

*        }*

*        catch (Exception ex)*

*        {*

*            Response.Write(ex.Message);*

*            sessionId = "";*

*        }*



*    }*

*}*



Any help would be appreciated.







*Gregory B. Neff*

Cottonwood Improvement District

8620 S Highland Dr

Sandy, UT 84093

801.943.7671

cottonwoodimprovement.gov
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