How To Use A Signed Assembly
Mar 20, 2011
I'm learning about GAC and signing assembly! And I have some problems...1. I make a DLL having some basic functions in ONE SOLUTION (Signed and Compile)2. Then, I make a FormApp, add a reference to this DLL and using its function to do somethings in OTHER SOLUTION. No error appears!3. I run this project, so I get an error:A call to PInvoke function 'MyDLL.LunarDate:: ' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.
I tried 4 possible abilities that I can image:
1. I unsign DLL and re-add it to FormApp : It's OK
2. I sign FormApp with same pnk : The same error
[code]....
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Dec 28, 2005
When running setup to install published program, the following message occurs: System Update Required: Unable to install or run the applicaiton. The application requires that asssembly CrystalDecisions.CrystalReports.Engine Version 10.2.3600.0 be install in the Global Assembly Cache (GAC) first. This version is listed in the references of the program and in my mind, be included in build. How do I get by this error?
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Apr 18, 2012
When running setup to install published program, the following message occurs: System Update Required: Unable to install or run the applicaiton. The application requires that asssembly CrystalDecisions.CrystalReports.Engine Version 10.2.3600.0 be install in the Global Assembly Cache (GAC) first. This version is listed in the references of the program and in my mind, be included in build. How do I get by this error?
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Dec 4, 2009
I have recently upgraded an VB6 project to vs2008. I was almost finished when the following error occured. Unable to emit assembly: Referenced assembly AxInterop.MSFlexGridLib does not have a strong name Prior to this error appering, I tested my app several times and it was fine. Only after publishing it did the error appear. I have tried all solutions I could find, but nothing helps. I have read [URL]
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Jun 17, 2009
I receive this error as "Assembly Load Error" whenever adding a form or other object that has to be inherited.
"Unable to load assembly. Ensure that the file is a valid .net Framwork assembly"
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Apr 2, 2012
I am loading an Assembly using Assembly.LoadFrom() as the assemblies are located in a different path from Application Base directory.
Dim oAssembly As Assembly = _
Assembly.LoadFrom("C:\MyFolder\" + ddlXlate.SelectedItem.ToString() + ".dll")
And I consume a Type from that assembly without any problem:
oXML = CType(oAssembly.CreateInstance(sBaseType + ".XlateContainer"), _
XlateBase.XlateContainer)
However, the problem occurs when I try to use a Type from this assembly from within another method like the one below:
oComboBox.DataSource = _
[Enum].GetValues(Type.GetType(sType + "+ItemEnum," + sAssemblyName))
sAssemblyName is the one I loaded using LoadFrom() actually. After it said it cannot find the assembly, I used AssemblyResolve event which solved my problem :Subscribing AssemblyResolve event :
AddHandler AppDomain.CurrentDomain.AssemblyResolve, _
AddressOf MyResolveEventHandler
Event Handler Method:
Private Shared Function MyResolveEventHandler(ByVal sender As Object, _
ByVal args As ResolveEventArgs) As Assembly
Return Assembly.LoadFrom("C:\PSIOBJ\" + args.Name + ".dll")
End Function
And I thought maybe the error occurs because it cannot find a dependent assembly defined in assembly manifest file I loaded using LoadFrom() already but when I checked the args.Name, I saw it was trying to load same assembly and after that it worked without any problem. So basically a type in the loaded assembly cannot be found before the event adding change.
My old code was using AppDomain.CurrentDomain.Load() and Assembly.Load() methods and they were working fine without the AssemblyResolve event. I was able to reach types in dynamically loaded Assembly from every where within the same AppDomain.
LoadFrom() can find dependencies automatically within the same requested assembly path and that couldn't be problem as everything this dll needs was there. So at first it looked like a AppDomain problem to me as it looks like it seems it can reach assemblies from Load context instead of LoadFrom context and I am now using LoadFrom context.But now it seems I should pass oAssembly instance evertwhere to use any type from the loaded assembly?Doesn't it load the assembly where I can reach it everywhere (same AppDomain) using simple Type.GetType(...) method?
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Jun 1, 2011
I'm wanting to include a system tray icon in my WPF project, and found this resource:[URL]..which looks like it will work beautifully, but it's written for C# and I'm using VB.net for this project. I downloaded his project and built the notifyicon as a DLL, then added as a reference to my project.
It throws up an error: Unable to emit assembly: Referenced assembly 'Hardcodet.Wpf.TaskbarNotification' does not have a strong name So I'm trying to figure out the best way to proceed. Do I need to strong name it, or is there a better way to do this?
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Oct 9, 2008
I've got an exception when I deployed my application: "the located assembly's manifest does not match the assembly reference" What I remember is changing the project name from the previous source code, does it affect that much?
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May 13, 2011
I'm searching for a way to validate (or bypass validation for) self-signed SSL certificates using VB .Net. I found code to do this in C# and tried converting it into VB code, but I'm not having any luck.
Here is the C# code. Here is what I tried:
Imports System
Imports System.Net
Imports System.Security.Cryptography.X509Certificates
[Code]...
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Oct 15, 2009
I have an array of Bytes. Most of these are interpreted as Unsigned. On certain occasions I need to interprete the byte as signed. Why can't Byte convert to SByte? What I'm doing: I'm trying to program a disassembler for an 8-bit video game ROM. My program reads the ROM and processes each instruction. The instructions are interpreted as unsigned. Some arguments for instructions would be treated by two's complement in the original hardware, however, to make a signed number.
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Jun 23, 2009
I'm working with byte arrays and building and disassembling Int16/UInt16 and Int32/UInt32 from them. I'd like to not worry about the Sign bit until I return the final value and just have the code return the appropriate value for the data type that was requested to be converted to/from the byte array
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Mar 8, 2012
I have an VB.Net/C# application that allows programatically:
Creates an RTF document
Open it up in Microsoft Word
Runs a Word macro that exists in the Word Template using code like this:
[code].....
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Mar 23, 2012
Looking for some .net snippet on accessing what users are logged into a domain. I have looked through all the AD namespace and okay with that in getting static items. Specifically, NOT looking for current logged in user for a given machine(have that as well). Looking for a list of users that are currently signed into a Domain.Essentially, I want to pass a user (or list of users) to a method that will check to see if the user passed in, is currently logged into the network (AD).
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Jun 25, 2012
I have created several DLL (.NET) libraries that are used in several projects. In these DLL libraries I want to know/retrieve which assembly (EXE) calls/uses the library, so if possible I want to know info like assembly name (EXE), strong name, version number, etc.
NB: Examples may be in C# or VB. I use both languages.
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Apr 7, 2009
I have written a .net assembly which plugs into to a third party COM application. The .net assembly is COM visible to the third party application. However this .net assembly references other regular assemblies. If I put these assemblies in the GAC the COM visibile assembly sees them without a problem. However for various reasons I do not want to put them into the GAC but I cannot get my COM visible assembly to see the other assemblies when they are in other locations. I have tried putting them in the same directory as the COM visible assembly. I have tried putting them in the same directory as the third party app's exe but neither of these work.
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Nov 29, 2009
I have query that involves a cross-language operation, namely converting 4 SBytes to a signed integer. The source language for this operation is Java, which utilizes the ByteBuffer in order to extract a signed integer from the data stream. The inner workings of ByteBuffer are at best a black box to me, as I haven't been able to find any hints to what actually goes on when Java extracts the integer. [Code]
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Mar 8, 2010
here know how to do to sign a file with certificate chain and crl embedded?I don't have ideia how to do that.
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Jun 7, 2012
I'm looking for a way to locate signature field on PDF using VB.Net Or JavaScript and Acrobat and then I want to check if it is signed or not. Here is what I have so far:
Dim page As Acrobat.CAcroPDPage
Dim annot As Acrobat.CAcroPDAnnot
page = acroPDDoc.AcquirePage(0)
[Code]....
Im finding the annotations but I dont know how to check if it is signature field or not.
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Sep 2, 2009
Im using the SSL stream class to connect to a server and authenticate their self-signed certificate. My authentication code gets an error: "RemoteCertificateChainErrors". When I drill down into the X509ChainStatuses, I only see a status of "UntrustedRoot" and status information of "A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider." This seems acceptable due to the self-signed nature of their certificate. I understand that I can ignore this error. However, Id like to do as much as possible to authenticate. I have a certificate from them. Ive been told to add their cert to my root certs somehow. How do I correct my code use this cert in authentication?
[Code]...
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May 3, 2012
I need to be able to write signed bytes to a serial port using SerialPort.Write() method, except that method only takes byte[] arrays of unsigned bytes, how would i write a signed byte to the serial port?For what I'm working on the particular command takes values from -1700 to 1700.
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Mar 22, 2012
How can I write a signed byte (sbyte) to unmanaged memory using VB.NET? I can use Marshal.WriteByte() to write an unsigned byte, but there doesn't appear to be an overload for signed bytes.
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Jun 11, 2010
Newbie here I need to send a email with and attached file (a *.xls file) The condition is that the e-mail need to be signed and crypted. I already got a digital certificate sign (provided by Verisign). I also read something about X509Certificate2 Class on MSDN, and something about Outlook interop Model. My idea was use the Outlook Interop Model Class (from Outlook 2007) but i have no idea how to do this.
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Apr 26, 2011
Since I sign my project .exe files with my code signing certificate, I want to check in my application MainForm_Load if the executable is signed and the signature is valid?If not signed or signature has been tampered it must exit the code.
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May 23, 2011
I need to read signed and unsigned 8 bit, 16 bit and 32 bit values from a file stream which may be little-endian or big-endian (it happens to be a tiff file which carries the byte order indicator at the start).I initially started by writing my own functions to read the values and was able to do so for unsigned values. e.g.
Public Function ReadUInt32() As UInt32
Dim b(4) As Byte
input.Read(b, 0, 4)
[code]....
But then I started looking at signed values and my brain broke.As an alternative, I found the IO.BinaryReader which will let me read signed values directly but doesn't seem to have any way to indicate that the data is big-endian or little-endian.Is there a nice way of handling this? Failing that, can someone tell me how to convert multiple bytes into signed values (in both byte orders)?
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Nov 26, 2011
Im currently developing a custom logging component, that we will deploy with all our applications, windows services, webapps, windows apps etc. I have a few questions of various nature. The component is a single signed dll file:
1) Which is the "safest" way to get the current directory? For example, in the config file, in the config section I have a property "logpath". The application will read this and write a log file depending in what they write:
c:myapplog (it will write a log here, create whatever folders it need) /Log (directly under the installed app directory, like c:program filesmyappLog) Log (same as above) I need something that work with both windows and web apps, for webapps it will log under the virtual directory of the aspnet app.
2) For exception handling, if nothing special is happening, like in the DAL, I get a sql server exception, is there any point in using
[Code]...
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Feb 22, 2012
I have been trying to compute the checksum for a line of hex code. This is to create a hex file which will be loaded onto an embedded micro.Some of you guys may not know how this is done so very briefly:
a line of hex bytes:
: 10 01 00 00 21 46 01 36 01 21 47 01 36 00 7E FE 09 D2 19 01 40
The underlined bytes are taken and summed. (in this case the decimal 960). and the bold is the checksum Only the 8LSB (or single least significant byte) is needed to compute the checksum... which in this case, 960 = 03C0 in hex, so only C0 is needed.Two's complement is then taken:
step 1) logical not of C0 which is
step 2) add one (integer)
BIN...........DEC...HEX
[code]....
So here is the code I have been using: (quick mention that in the string passed, the hex bytes are all grouped together, there are no space characters)
Public Sub CreateLine(ByVal Data As String)
'Dim BDataArray(DataLength) As Byte
Dim IDataArray(Data.Length) As Integer
[code]....
where i get into trouble is where i commented 'i get into trouble'. My code works, but it's rather crude Now, in that line i first convert the hex value (string) "SChecksum" into an integer. I want to NOT this, so I get my step 2 from my explanation. However, the results appears to be a signed logical NOT. which gives me the wrong answer. My hashed togther version simply subtracts 256 before the not, in order to give me the correct answer.
Basically, I would love for someone to chime in and point out the flaws in my function, and push me towards figuring out the 'proper' way of doing this. Also I can't quite wrap my head around what would happen in the case a string were passed to my function that is over 16 bits, but I imagine I would have to subtract a larger value than 256, before doing the NOT in this case?(whilst we're on the subject of functions, I've used a 'sub', in which case should I used a sub, and which case should I use a function?).
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May 31, 2009
When ever I finish simple programs no matter what it is and i click to debug it it comes up"Error while trying to run project:could not load file or assembly"project name" or one of its dependencies.the module was expected to contain an assembly manifest"
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Apr 21, 2011
sorry for my English, I don't speek well... I need to compile assembly in memory, that can compile another one. There is a form with one button. Here is a code of the form
Imports System
Imports System.Threading
Imports System.CodeDom
Imports System.CodeDom.Compiler
Imports System.Collections
[Code]...
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Jan 14, 2010
Since, it's possible for anyone to name an assembly starting with 'System', checking for 'System' is not a satisfactory solution.
Alternatively, if that's not possible, how about checking the modules in an assembly?
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Jun 20, 2010
I am building a dll-Assemby A which references another Assembly B. Assembly B is strongly named and installed in the GAC of my development computer. An other computer will not have assembly B installed in the GAC.
Question: If i handle strongly named assembly B like a private assembly and copying it into the bin-directory by specifying local copy = true in the properties-window, will the programm run on the other computer?
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