Im using system.reflection to inject a managed (.net) file directly into memory.This injection works with other managed files, but this file has data in the EOF and it wont run without that data.
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I am working on a card game, and i get this werid error:
A first chance exception of type 'System.Reflection.TargetParameterCountException' occurred in System.Windows.Forms.dll
The code that is cousing this error is:
Private Delegate Sub ShowcardDelegate(ByVal test As String, ByVal objtest As Object, ByVal value As Boolean)
Private Sub Showcard(ByVal test As String, ByVal objtest As Object, ByVal value As Boolean)
If objtest.InvokeRequired Then
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I have had several occasions recently to access a specific class several times over a relatively small time frame.So I've been storing the value of the class in Session and trying to access it on page load, if it's not available creating a new instance and storing that in session.
So instead of constantly replicating the same code for different classes on different pages I'm trying to create an extension method to do this for me.
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I'm stuck on what to do when I make my new instance of my class (it would have to have a New() sub)
I'm not sure where to go from here... or even if this is the best way to do it.
I am trying to determine every single reference inside a dll with System.Reflection. However, GetReferencedAssemblies only lists the ones in the "References" (visible in solution explorer).
I would like to determine references from within the code itself, such as an imports statement. Even things like if/then statements, try/catch, absolutely everything.
Is this possible to do using System.Reflection? If so, how?
I would definitely prefer to do this without p/invoke.
I am trying to create an application that will play a movie file, then when it has played the movie, give the user 30 seconds then shut the system down. i have so far made it so that it does everything i need expect when the code for the additional 30 seconds is up i get the following error:
Quote:
An unhandled exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.dll
Additional information: Exception has been thrown by the target of an invocation.
When i had a message box being made at the same point it worked fine but when i added the shutdown code in it doesnt work so i am confident it is not with the if statements but more the "Process.Start("shutdown /s /t 30")" line.
Private Sub timShutdown_Elapsed(ByVal sender As System.Object, ByVal e As System.Timers.ElapsedEventArgs) Handles timShutdown.Elapsed
If ShutdownTimer = 1 And ShutdownExtraTime = False Then 'Movie Has Played
ShutdownExtraTime = True
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I am making a program that is sort of a frontend to all my other apps. I put the EXEs of those apps into the resources of my frontend. The problem occurs when I try to run the EXEs from memory.
I keep getting System.Reflection.TargetInvocationException on the line:
entryPoint.Invoke(RuntimeHelpers.GetObjectValue(objectValue), New Object() {New String() {"1"}})
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I am trying to create an Excel file using reflection. The reason, the application will be running on many machines some of which may or not have excel installed. I decided to embed the "Microsoft.Office.Interop.Excel.dll" and via reflection generated the excel spreadsheet. The code I am trying to resemble is:
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I am loading an assembly dynamically and invoking a static method from it. The problem arises when the method uses a reference which is not trivial (e.g. mscorlib or System.Core) - I get System.MissingMethodException. I have tried going through the references assemblies of the loaded assembly and manually loading them all, thus forcing them to be loaded onto the AppDomain. I have checked CurrentDomain.GetAssemblies, the assemblies are loaded.
View 1 RepliesI am working on a program that requires me to load 2 dll at runtime.My code is as shown below:
View 2 Repliesso I want to go start using System.Reflection to load my dlls from a special folder as I never did this before and thought I should give it a try. now I'm wondering how to do this. below I have my dll code and my form code I need to know how to use the sub from my dll in my form if I use Assembly.LoadFrom
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I get this error when I try to read data over the serial port using a program that I have written in VB.NET n unhandled exception of type System.Reflection.TargetInvocationException' occurred in mscorlib.dllAdditional information: Exception has been thrown by the target of an invocation.he code which I think causes this error is as follows :
Try
COMPort.Open()
Catch ex As Exception
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I cannot get the following to work for me: its the section that sets the default for system.data.linq.binary. The database I work with doesn't allow nulls in any field. So I generally run my buffer through this routine to populate defaults and then set the real values independently, (this works when I miss a field). I can set the Linq table field = fakeBinary and it works like a charm. Thus, I don't understand why using reflection can't pull of the same thing.
Ex: Me.CM20500WindowBuffer.Reconcile_Messages = New Byte() {0} works.
Try
Dim fakeBinary As System.Byte() = {0}
For Each fld In nObj.GetType().GetProperties
Select Case fld.PropertyType
Case GetType(Byte)
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I'm passing a type name and some parameters from C# code into a navigation framework written in VB. The navigation framework looks for a constructor on the type that matches the parameters passed in using Type.GetConstructor(Types()). The constructor that I'm looking for expects an array of integers Integer() in vb. But it gets an array of System.Int32. I've gone so far as to try this:
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And the VB code still sees System.Int32 on the other end, which means that it doesn't find the constructor.
I have tried several versions of this with no luck. The casting of the worksheet works as my data is entered in other parts, but I have a section where I need to add data 1 column right of the cell containing the 'str(0)' value. Most of these parameters are optional. I have even tried the System.Reflection.Missing object.
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Our company has an app that load their components by System.Reflection.Load (By the way, an awesome technique )But, we start to monitorate the application and detect a extrange grow up of memory (actually when our application still all day on air, their allocate memory on task manager is 200 MB plus memory) And all of our components (60 plus DLLs) is load by this technique.My doubt is how to deallocate this assemblies or how the best way to deallocate any assemblies loaded by the System.Reflection.Assemblie.Load method?
View 10 RepliesNightmare error: System.Reflection.TargetInvocationException error in VB 2008
View 6 RepliesI have an open source project I converted to vb.net. I solved all the errors, except for one. This is the C# line
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This should be fairly basic, but say I have a Public property as local variable on my WCF service, and I set this in one call to the service. Is there a way to preserve that data for another call to the service? (Without writing the data to xml or a db, and re-referencing it or anything like that)
Executing the calls from the Winform:
Public Class ClientSideWinForm
Private proxy As ServiceReference.Client
Private Sub Client_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
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Basically I drew something on a form using Graphics. Now if I move a window over the form the stuff I drew gets erased.Is there a way to preserve the drawing?
View 3 RepliesIf I write
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I am working on a richtextbox application.When I typed text into it and hit return, the returns were preserved.However, when I opened the page up in my Microsoft Vista notepad.exe program,the returns were not preserved.The text appears as if wordwrap was unselected in my notepad.exe program.I just got one long strings and no returns.How can I fix this problem so that the returns are preserved? when I open the file back up in my richtextbox program, it appears as I had typed it with all the spacing and returns.
View 6 RepliesI�m migrating a project from VB6 to VB.NET 2010 Express. Im replacing msflex grid with datagridview. But i�m not quite familiar with it. Im not using datasource. This will be done (far) latter.
So far i�m filling datagridview by code reading a recordset from mdb. Works fine.
The problem is that, I have defined the columns at visual studio designer mode, without using any code. When I open my mdi child form for the first time it works. But If I close this form and open it again a error occurs because it loses the defined columns.
how to preserve columns defined at design after close de form?
Converting an object .tostring() removes the leading zeros. The object is not a fixed length, so I can't do object.tostring("0000000") where the number of zeros represents the fixed length.
An example object value is "0357" when I convert that object .tostring it becomes "357".
Is there a method for keeping the leading zeros where the length is not known?
I need to preserve a collection even after application exits. In ASP if i use application object this can be acheived. But in windows application what could i do to preserve collections?
View 4 RepliesMy form contains several NumericUpDown controls. These controls show different amount of decimal places. Later in my code I put the different NumericUpDown.Value's in a string array arrStr() like so:
arrStr(1) = NumericUpDown1.Value
arrStr(2) = NumericUpDown2.Value
arrStr(3) = NumericUpDown3.Value
Then I print the array with the File.WriteAllLines function to a text file.
If for example NumericUpDown1.Value = 1.00, NumericUpDown2.Value = 2.30 and NumericUpDown3.Value = 2.124 the file has the following values in it:
1
2.3
2.124
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I have tried Format which works, but that formatting method is not convenient as the amount of decimal places is already set for each NumericUpDown. It would be annoying to do the work again, but now with Format.
I am trying to figure out how to preserve the values of the controls on this page (just the user-submitted commission value and the sales region (eastern is 10% and western is 20%)).[code]...
View 2 RepliesI have a situation where I need to sort arrays and preserve the current key - value pairs.
For example, this array:
(0) = 4
(1) = 3
(2) = 1
(3) = 2
Needs to sort like this
(2) = 1
(3) = 2
(1) = 3
(0) = 4
Retaining the original keys. Array.Sort(myArray) sorts into the right sequence but doesn't keep the indexes. I need a variant that does.edit Using the links, this seems close to what I want. Do I just need to remove the extra brackets to convert this to vb.net?
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[edit]Sorry I left a bad title in this thread - confusing![/edit] Been a long time since I used an array - they are so limiting...But I need to build a simple string array - that I'm passing to a C/C++ function.
Is there any other way to do this other than keep REDIM PRESERVING??
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The first time the page loads my structrure is filled correctly. After an AJAX postback all the structure fields are setting to nothing. (It seems that the Dim OldPInfo As New PInfo is called again), but i should better ask the SO Experts.
I have a function that converts a .csv file to a datatable. One of the columns I am converting is is a field of names that have a comma in them i.e. "Doe, John" when converting the function treats this as 2 seperate fields because of the comma. I need the datatable to hold this as one field Doe, John in the datatable.
Function CSV2DataTable(ByVal filename As String, ByVal sepChar As String) As DataTable
Dim reader As System.IO.StreamReader
Dim table As New DataTable
Dim colAdded As Boolean = False
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