VB .Net - Reflection: Reflected Method from a loaded Assembly executes before calling method. Why?
- by pu.griffin
When I am loading an Assembly dynamically, then calling a method from it, I appear to be getting the method from Assembly executing before the code in the method that is calling it. It does not appear to be executing in a Serial manner as I would expect. Can anyone shine some light on why this might be happening. Below is some code to illustrate what I am seeing, the code from the some.dll assembly calls a method named PerformLookup. For testing I put a similar MessageBox type output with "PerformLookup Time: " as the text. What I end up seeing is:
First: "PerformLookup Time: 40:842"
Second: "initIndex Time: 45:873"
Imports System
Imports System.Data
Imports System.IO
Imports Microsoft.VisualBasic.Strings
Imports System.Reflection
Public Class Class1
Public Function initIndex(indexTable as System.Collections.Hashtable) As System.Data.DataSet
Dim writeCode As String
MessageBox.Show("initIndex Time: " & Date.Now.Second.ToString() & ":" & Date.Now.Millisecond.ToString())
System.Threading.Thread.Sleep(5000)
writeCode = RefreshList()
End Function
Public Function RefreshList() As String
Dim asm As System.Reflection.Assembly
Dim t As Type()
Dim ty As Type
Dim m As MethodInfo()
Dim mm As MethodInfo
Dim retString as String
retString = ""
Try
asm = System.Reflection.Assembly.LoadFrom("C:\Program Files\some.dll")
t = asm.GetTypes()
ty = asm.GetType(t(28).FullName) 'known class location
m = ty.GetMethods()
mm = ty.GetMethod("PerformLookup")
Dim o as Object
o = Activator.CreateInstance(ty)
Dim oo as Object()
retString = mm.Invoke(o,Nothing).ToString()
Catch Ex As Exception
End Try
return retString
End Function
End Class
