Hi,
can I create a instance from a class which is another assembly and call a
function inside this assembly? I know the assembly name, class name, the
function name and its signature.
Thanks
Christian
9  9549 
yes, you can
Assembly otherAssembly = Assembly.Load(. ..);
Type type = otherAssemby.Ge tType(typename) ;
object obj = otherAssembly.C reateInstance(t ype);
BindingFlags bf = BindingFlags.In vokeMethod | BindingFlags.In stance |
BindingFlags.Pu blic | BindingFlags.No nPublic;
type.InvokeMemb er("methodname" , bf, null, obj, new object[] {arg1,
arg2});
// or
ISomeWellKnownI nterface ifc =
(ISomeWellKnown Interface)other Assembly.Create Instance(typena me);
ifc.methodname( arg1, arg2);
Something like this?
Assembly a = Assembly.LoadWi thPartialName(" MyAssembly");
object obj = a.CreateInstanc e("MyType");
Type[] signature = new Type[] {typeof(int), typeof(string)} ;
MethodInfo method = obj.GetType().G etMethod("MyMet hod",
signature);
object[] parameters = new object[] { 123, "abc" };
method.Invoke(o bj, parameters);
Note: if you can, I would advise working against an interface, i.e. make
both MyAssembly and the above code reference a (single) separate assembly
with IMyInterface {void MyMethod(int value1, string value2);} - you can then
just case obj to IMyInterface and you don't need anywhere near as much
reflection.
Marc
Hi Vladimir,
thanks for your help.
Bye Christian
"Vladimir Matveev" schrieb: yes, you can
Assembly otherAssembly = Assembly.Load(. ..);
Type type = otherAssemby.Ge tType(typename) ;
object obj = otherAssembly.C reateInstance(t ype);
BindingFlags bf = BindingFlags.In vokeMethod | BindingFlags.In stance |
BindingFlags.Pu blic | BindingFlags.No nPublic;
type.InvokeMemb er("methodname" , bf, null, obj, new object[] {arg1,
arg2});
// or
ISomeWellKnownI nterface ifc =
(ISomeWellKnown Interface)other Assembly.Create Instance(typena me);
ifc.methodname( arg1, arg2);
Hi Marc,
thanks for your help and regards from Munich.
Christian
"Marc Gravell" schrieb: Something like this?
Assembly a = Assembly.LoadWi thPartialName(" MyAssembly");
object obj = a.CreateInstanc e("MyType");
Type[] signature = new Type[] {typeof(int), typeof(string)} ;
MethodInfo method = obj.GetType().G etMethod("MyMet hod",
signature);
object[] parameters = new object[] { 123, "abc" };
method.Invoke(o bj, parameters);
Note: if you can, I would advise working against an interface, i.e. make
both MyAssembly and the above code reference a (single) separate assembly
with IMyInterface {void MyMethod(int value1, string value2);} - you can then
just case obj to IMyInterface and you don't need anywhere near as much
reflection.
Marc
Hi,
it works! But how can I solve this problem if the assembly is located not in
the GAC but in the application directory?
Thanks
Christian
"Vladimir Matveev" schrieb: yes, you can
Assembly otherAssembly = Assembly.Load(. ..);
Type type = otherAssemby.Ge tType(typename) ;
object obj = otherAssembly.C reateInstance(t ype);
BindingFlags bf = BindingFlags.In vokeMethod | BindingFlags.In stance |
BindingFlags.Pu blic | BindingFlags.No nPublic;
type.InvokeMemb er("methodname" , bf, null, obj, new object[] {arg1,
arg2});
// or
ISomeWellKnownI nterface ifc =
(ISomeWellKnown Interface)other Assembly.Create Instance(typena me);
ifc.methodname( arg1, arg2);
You also can subscribe to AppDomain.Assem blyResolve event and locate it
manually
Hi,
"Christian Havel" <Ch************ @discussions.mi crosoft.com> wrote in
message news:A4******** *************** ***********@mic rosoft.com... Hi,
it works! But how can I solve this problem if the assembly is located not
in
the GAC but in the application directory?
Assembly.LoadFr om will do it
--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation
Hi Vladimir,
thanks a lot.
Christian
"Vladimir Matveev" schrieb: You also can subscribe to AppDomain.Assem blyResolve event and locate it
manually
Hi Ignacio,
thanks a lot and regards from Munich.
Christian
"Ignacio Machin ( .NET/ C# MVP )" schrieb: Hi,
"Christian Havel" <Ch************ @discussions.mi crosoft.com> wrote in
message news:A4******** *************** ***********@mic rosoft.com... Hi,
it works! But how can I solve this problem if the assembly is located not
in
the GAC but in the application directory?
Assembly.LoadFr om will do it
--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation
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