i need iterate com+/activex collection objects using late bind interop in c#. @ moment need iterate comadmin.comadmincatalogcollection, getcollection("applications") method in comadmin.comadmincatalog. poc used others proprietary com+/activex objects need done late bound. how should box object object iterable?
complus.cs
public abstract class complus { public object comobject { get; private set; } public system.type comobjecttype { get; private set; } protected complus(string progid) { this.comobject = system.activator.createinstance(system.type.gettypefromprogid(progid)); this.comobjecttype = this.comobject.gettype(); } protected complus(object comobject, string progid) { this.comobject = comobject; this.comobjecttype = system.type.gettypefromprogid(progid); } } comadmincatalog.cs
public class comadmincatalog : complus { public comadmincatalog() : base("comadmin.comadmincatalog") { } public comadmincatalog(object comobject) : base(comobject, "comadmin.comadmincatalog") { } public void connect(string serveraddress) { } public comadmincatalogcollection getcollection(string collectionname) { return new comadmincatalogcollection( base.comobjecttype.invokemember("getcollection", system.reflection.bindingflags.invokemethod, null, base.comobject, new object[] { (object)collectionname })); } } comadmincatalogcollection.cs
public class comadmincatalogcollection : complus { public comadmincatalogcollection() : base("comadmin.comadmincatalog") { } public comadmincatalogcollection(object comobject) : base(comobject, "comadmin.comadmincatalog") { } public void populate() { base.comobjecttype.invokemember("populate", system.reflection.bindingflags.invokemethod, null, base.comobject, null); } } toolbox.cs
public static class toolbox { public static void createapp(string appname, string serveraddress = null) { comadmincatalog comadmincatalog = new interop.comadmin.comadmincatalog(); comadmincatalogcollection comadmincatalogcollection; if (!string.isnullorempty(serveraddress)) { comadmincatalog.connect(serveraddress); } comadmincatalogcollection = comadmincatalog.getcollection("applications"); comadmincatalogcollection.populate(); // here fun has begin iterating applications collection verify if there application given name or not. } } edit
i need compatible .net 2.0 (3.5 tops), dynamic don't suits me.
you use foreach keyword in c#, iterate collection. dlr knows how automagically map icatalogcollection::_newenum() method.
let's first early-bound version since unlikely want late-bound. server has been stable long time , .net 4.0 embed interop types feature avoid dependency on interop library. use project > add reference > browse button > select c:\windows\system32\com\comadmin.dll. sample code:
static void earlybound(string server) { var cat = new comadmin.comadmincatalog(); cat.connect(server); var coll = (comadmin.comadmincatalogcollection)cat.getcollection("applications"); coll.populate(); foreach (comadmin.icatalogobject app in coll) { console.writeline(app.name); var comps = coll.getcollection("components", app.key); comps.populate(); foreach (comadmin.icatalogobject comp in comps) { console.writeline(" {0} - {1}", comp.name, comp.key); } } } the late-bound version isn't different dynamic keyword:
static void latebound(string server) { var catt = type.gettypefromprogid("comadmin.comadmincatalog"); dynamic cat = activator.createinstance(catt); cat.connect(server); dynamic coll = cat.getcollection("applications"); coll.populate(); foreach (dynamic app in coll) { console.writeline(app.name); dynamic comps = coll.getcollection("components", app.key); comps.populate(); foreach (dynamic comp in comps) { console.writeline(" {0} - {1}", comp.name, comp.key); } } } as demanded, late-bound version of code .net 2.0, cruel , unusual punishment that's outlawed geneva convention on programmer's rights. obtain iterator _newenum() com method, can cast ienumerator:
static void latebound20(string server) { type catt = type.gettypefromprogid("comadmin.comadmincatalog"); object cat = activator.createinstance(catt); cat.gettype().invokemember("connect", bindingflags.invokemethod, null, cat, new object[] { server }); object coll = cat.gettype().invokemember("getcollection", bindingflags.invokemethod, null, cat, new object[] { "applications" }); coll.gettype().invokemember("populate", bindingflags.invokemethod, null, coll, new object[] { }); object iter = coll.gettype().invokemember("_newenum", bindingflags.invokemethod, null, coll, new object[] { }); system.collections.ienumerator iter1 = (system.collections.ienumerator)iter; while (iter1.movenext()) { object app = iter1.current; object name = app.gettype().invokemember("name", bindingflags.getproperty, null, app, new object[] { }); object key = app.gettype().invokemember("key", bindingflags.getproperty, null, app, new object[] { }); console.writeline(name.tostring()); object comps = coll.gettype().invokemember("getcollection", bindingflags.invokemethod, null, coll, new object[] { "components", key }); comps.gettype().invokemember("populate", bindingflags.invokemethod, null, comps, new object[] { }); object iter2 = comps.gettype().invokemember("_newenum", bindingflags.invokemethod, null, comps, new object[] { }); system.collections.ienumerator iter3 = (system.collections.ienumerator)iter2; while (iter3.movenext()) { object comp = iter3.current; object cname = comp.gettype().invokemember("name", bindingflags.getproperty, null, comp, new object[] { }); object ckey = comp.gettype().invokemember("key", bindingflags.getproperty, null, comp, new object[] { }); console.writeline(" {0} - {1}", cname, ckey); } } } output on com+ unencumbered machine 3 snippets:
com+ utilities remotehelper.remotehelper - {e423af7c-fc2d-11d2-b126-00805fc73204} txctx.transactioncontext - {7999fc25-d3c6-11cf-acab-00a024a55aef} txctx.transactioncontextex - {5cb66670-d3d4-11cf-acab-00a024a55aef} qc.recorder - {ecabafc2-7f19-11d2-978e-0000f8757e2a} qc.listenerhelper - {ecabafc4-7f19-11d2-978e-0000f8757e2a} com+ qc dead letter queue listener qc.dlqlistener - {ecabafca-7f19-11d2-978e-0000f8757e2a} com+ explorer comexps.ctrkevntlistener - {2c3e140b-7a0d-42d1-b2aa-d343500a90cf} com+ utilities (32 bit) remotehelper.remotehelper - {e423af7c-fc2d-11d2-b126-00805fc73204} txctx.transactioncontext - {7999fc25-d3c6-11cf-acab-00a024a55aef} txctx.transactioncontextex - {5cb66670-d3d4-11cf-acab-00a024a55aef} qc.recorder - {ecabafc2-7f19-11d2-978e-0000f8757e2a} qc.listenerhelper - {ecabafc4-7f19-11d2-978e-0000f8757e2a} system application catsrv.catalogserver - {182c40f0-32e4-11d0-818b-00a0c9231c29} eventpublisher.eventpublisher - {ecabafbc-7f19-11d2-978e-0000f8757e2a} comsvcs.trackerserver - {ecabafb9-7f19-11d2-978e-0000f8757e2a} mts.mtsgrp - {4b2e958d-0393-11d1-b1ab-00aa00ba3258} pdump.processdump - {ecabb0c4-7f19-11d2-978e-0000f8757e2a} 
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