Databases
StackOverflow2013
Postsdbo
POCom+ late binding c# 4.0
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POCom+ late binding c# 4.0
    primarykey
    data
    text
    <p>In my program I create Com+ objects dynamicly (late binding) using </p> <pre><code>Type comObjectType = Type.GetTypeFromProgID(progId, true); object comObject = Activator.CreateInstance(comObjectType); </code></pre> <p>And then call one of the methods using reflection</p> <pre><code>object result = comObjectType.InvokeMember(MethodToActivate, BindingFlags.InvokeMethod, null, comObjec, new object[] {....}); </code></pre> <p>It works greate in .Net 1.1/2.0/3.5</p> <p>Now I'm trying to run the <strong>same code</strong> on the same machine (Windows XP) compiled for .Net 4.0, but I've got a </p> <pre><code>Exception: Method 'System.__ComObject.{MethodName}' not found. </code></pre> <p>I've got the exception for most of Com+ objects (not for all). Does anybody know what is the problem? Why do I get the exception in FW 4.0 environment? What should I do to avoid it?</p> <p>Thanks a lot, Daniel</p> <p>After some more investigation I have discovered that some of the Com+ proxies are created as <code>System._ComObject</code> (those are the native ones, I suppose), and some are created as <code>System.Runtime.Remoting.Proxies._TransparentProxy</code> (I think that those are .Net Com+ objects). Method invocation works fine for those that are created as <code>System._ComObject</code> and does not work for <code>System.Runtime.Remoting.Proxies._TransparentProxy</code>. The most intersting fact is that in .Net 2.0 the all the objects are created in the same way (<code>_ComObject</code> and <code>_TransparentProxy</code>) but the method invocation does work fine. Another interesting fact is that I can see the "missing" method in the debugger using reflecton</p> <p><code>((System.EnterpriseServices.RemoteServicedComponentProxy)((((System.Runtime.Remoting.Proxies.__TransparentProxy)(ObjectToActivate)))._rp)).ProxiedType.GetMethods()</code></p> <p>I thought for some moment that it could be a security issue, but I run the code as WindowsService logged on as a user with Administrator privileges </p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USDaniel Kabzon
    1. USDaniel Kabzon
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POCom+ late binding c# 4.0
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POCom+ late binding c# 4.0
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POCom+ late binding c# 4.0
      1. This table or related slice is empty.
      1. VTUpMod
    1. COHave you checked any 32/64-bit issue? Maybe your process is 64-bit and therefore hitting the 64-bit COM registry (where no one lives :-)?
      singulars
      1. POCom+ late binding c# 4.0
      1. USSimon Mourier
    2. COI don't think it's a 32/34-bit issue, my local machine is 32 bit, so is the remote server
      singulars
      1. POCom+ late binding c# 4.0
      1. USDaniel Kabzon
    3. COok for 32/64-bit. Now, it looks like your COM server is not in-process or has a specific threading model (hence the proxies). Can you give more details on this? are they hosted out-of-process? In component services? And what about the Invoke arguments? are your sure there is no ambiguity? What about the BindingFlags? don't you need Public|Instance?
      singulars
      1. POCom+ late binding c# 4.0
      1. USSimon Mourier
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload