| DCJ |
| Newbie |
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| South Africa |
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| None Specified |
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| Wednesday, February 1, 2012 |
| Thursday, February 2, 2012 10:24:31 AM |
2
[0.01% of all post / 0.00 posts per day] |
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Hi all, let me start of by saying that I am still a comparative .Net noob, so please be nice :).
I am trying to make use of a combination of late binding and reflection to load a dll that has been created by editing the output type of a Mapforce auto generated C# project to a class library. After generating the C# code I open up the generated solution and create a function RunDoc(Altova.IO.DocumentInput input2Source, Altova.IO.DocumentOutput output2Target) , which is essentially a copied version of the overloaded Run(Altova.IO.Input input2Source, Altova.IO.Output output2Target) with its input parameters changed to DocumentInput and DocumentOutput.
I then load the dll using reflection and create an instance of it using a directcast as below:
Code:'Get the index of the assembly from a hash table
Dim l_iCurrentIndex = m_hashLoadedAssemblies(p_strAssemblyName)
Dim l_InvokedAssembly As System.Reflection.Assembly = m_rgAssemblies(CInt(l_iCurrentIndex))
Dim l_Type As Type
'assign the type of the user selected assembly/class
l_Type = l_InvokedAssembly.GetType(p_strAssemblyName + "." + p_strClassName)
Dim l_ToInvoke As Object
Dim l_xmlInput As New Xml.XmlDocument
Dim l_xmlDocResult As New Xml.XmlDocument
l_xmlInput.LoadXml("<test>test run</test>")
'create and populate the input/output documents
Dim l_InputDoc As Altova.IO.DocumentInput
Dim l_OutputDoc As Altova.IO.DocumentOutput
l_InputDoc = New Altova.IO.DocumentInput(l_xmlInput)
'create an instance of the user selected assembly/class
l_ToInvoke = Activator.CreateInstance(l_Type)
Try
'invoke the RunDoc function
l_ToInvoke.RunDoc(l_InputDoc, l_OutputDoc)
Catch ex As Exception
sendToLog("[invokeAssemblyMethod] An exception wast thrown while trying to invoke the selected assembly method.")
sendToLog("[invokeAssemblyMethod] " + ex.Message.ToString)
End Try
Unfortunatly when attempting to call RunDoc I get the following exception:
"Method invocation failed because 'Public Sub RunDoc(input2Source As Altova.IO.DocumentInput, output2Target As Altova.IO.DocumentOutput)' cannot be called with these arguments:
Argument matching parameter 'input2Source' cannot convert from 'DocumentInput' to 'DocumentInput'."
Am I trying to do something totally whacked? Or am I just doing something wrong at some point? Any feedback and/or suggestions would be greatly appreciated!
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