Allow Partially Trusted Callers?
Oct 27, 2009
I have a VB.NET application that I wish to store on a shared server. It is a GUI application that also calls a few external .dll's. I'm running into an error message that says "That Assembly Does Not Allow Partially Trusted Callers". I've seen several posts that mention I should add the following line to my AssemblyInfo.vb file:
<Assembly: AllowPartiallyTrustedCallers()>
This still doesn't seem to solve the problem. Anyone know what to do? I'm hoping to compile and store the .exe on the server for other users to access.
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Mar 26, 2012
i am devloping app in vb.net and ms sql express compact 2005 .evrything works well. but when i used a third party dll file report viewer and one from skineengine system give me the error"assembly does not allow partialy trusted callers".
at first when i used report viewer it works,but letter it throw me error,same for skineengine. so that is the case of disallowing third party custom dll files.
i even set <Assembly: AllowPartiallyTrustedCallers()> in assemmbly.info
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Apr 28, 2009
Out of 70 users of my application 2 are getting the following message when they to run the application... That assembly does not allow partially trusted callers. The reason for the error is that by default .net applications run from a network location have limited permissions. You need to use caspol.exe to add the network folder where your application is being run from to the Trusted Zone. If you do a search on these forums you will find plenty examples of how to do this. It is fairly simple. It will have to be done on every machine that will be running the application and a simple cmd file can be made to do this. The only difference is that I've asked our service desk to install the application to the local C drive which I believe they did.
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Jun 30, 2011
I've created a usercontrol containing two datagridviews, and a splitter column. When I am using the grid in my forms, I am able to interact with all of the objects on the usercontrol, but I would like to prevent this being being the case. How would I go about doing this?
I originally tried to create a class that inherited datagridview, so that I could extend it, but I couldnt see how to do what I wanted (my control has a column picker in one panel, and a data grid in the second panel).
I also tried to just create a basic class, and Dynamically create the objects I needed. But I would like the users to have virtually full control over the data grid, but only limited (specifically coded) control over the column picker, or the splitpanel controls)
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Jan 23, 2012
vb.net applications that runs at the client-side work in unsecured environment, these applications connects to a mysql database server so... it contains the username and the password of the mysql database in the connection-string in the application itself.isn't there any way to digitally sign my applications so the database server only accepts the requests from the trusted applications?I want to this to prevent the hackers from hijacking my database
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Oct 21, 2011
Or in another way of understanding how to bypass the firewall of Windows in VB.NET?
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Jun 12, 2011
Is it possible to add a new Trusted Location for word 2010 using VB.Net?
I want to do the same steps in the below link via code, is that possible ?[URL]..
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Aug 23, 2009
I decided to get rid of some of the junk in my computer, so I selected all the .tmp files and deleted (nearly) all of them. I then emptied the recycle bin... Then I set to work on trying to get some code to work (in an excel 2007 macro enabled workbook).
I now have two problems: 1) excel will not let me record a macro and 2) when I run one sub routine, excel tries to run every sub routine associated with the workbook.
other than removing and re-loading Office 2007? I'll try logging off and then logging on again - if that works, I'll let you know.
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Mar 28, 2010
I have some Crystal Reports connecting to a Sql Server db that I would like to detect whether the connection is trusted or whether I need to supply the log on info (reports are not supplied by me so I can't control the connect method). If I just blindly supply login credentials, it won't connect if it is a trusted connection.The following does not work:
oRpt = oCR.OpenReport("C:MyReport.rpt")
if oRpt.Database.Tables(1).ConnectionProperties.Item("Integrated Security") = True then
'trusted connection[code]....
It gives the following error:Operator '=' is not defined for type 'IConnectionProperty' and type 'Boolean'.
I cannot find how create a construct in vb.net for IConnectionProperty. I can't find any documents from Crystal that explain it.I am using Crystal Reports XI - Developer
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Feb 23, 2012
First, I changed my ILS function to be simply: Public Overrides Function InitializeLifetimeService() As Object Return Nothing End Function
Then I included this in my Program as well as A. As Timiz0r pointed out, Form inherits MarshalByRefObject, so I didn't have to include a Inherits statement on my main class (which already inherited Form). This was the big thing, because I didn't include it originally. Next, I changed my AppDomain setup to be:
Dim _ADomain As AppDomain = AppDomain.CreateDomain(Name)
Dim item As New A
item = CType(_ADomain.CreateInstanceAndUnwrap(GetType(A).Assembly.FullName, GetType(A).FullName), A)
With these changes I can now use separate instances of the DLL COM object as desired.
Original Question I am writing an application that creates a list of objects, each referring to a DLL, and each object placed in its own AppDomain to keep the instances of the DLL from interfering with each other. Taken another way:Program maintains a List(Of A)A is created as an instance of AppDomain using CreateInstanceAndUnwrap Each A refers to mirror.dll, which is including in the application's references
[Code]...
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Dec 9, 2010
I have a transparent layer on the top of a form. I need to display only some part of that transparent form.
-edited- If you think of a map and traffic signal icons displaying on the map. There are a map image layer and a traffic signal icons layer, which is tranparent except icons. if you move the map location, the traffic signal icons should move along with. if the certain area of map does not appear on the screen by moving, corresponding traffic signal icnos should disappear as well. This is what I am trying to do here. Moving the trasparent form is straightforward, but I need to hide some portion of that transparent form.
[Map]
[Traffic sig] here I need to show "fic s" part only.
This is for a very small image.
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Sep 27, 2010
[code]Whenever my GridView populates, if there is no value to return from my _dataSet for a field, my GridView stops populating after that. Shouldn't it skip that and continue populating the rest of the grid? It seems the GridView won't accept an empty/null value. is?
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Sep 13, 2010
I have one project created with VB 6.0. Step to reproduced this issue,
1. Start Internet explorer and add the site "[url]" to trusted site. now set protected mode check box to Off for the trusted site zone.
2. Open the Visual Basic 6.0 and created standard Exe project.
3. From Tools -> references add "Microsoft Internet Controls".
4. Copy and Paste below code. [Code]
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Jun 22, 2010
I added an image as the background image for a form in VB.net. When I run the program, after approx. 5-6 seconds, the image partially overlays itself, as in an offset overlay of the underlying image. I never had this problem in VB6, but I did have it the other time I used a background image on a form in VB.Net.
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Jul 9, 2009
I have a problem concerning the Form_Loading event: When I want to load a new Form (ImageDisplay) the ImageDisplay_Load Event is not executed first.
Instead it runs through the global variables definitions and then executes a Private Sub called numericupdown1_changed.
The numericupdown1 field is part of the form I want to load and has not been touched.
That is my calling sequence:
Private Sub Dispalydata_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Dispalydata.Click
Dim myDisplay As New ImageDisplay
[Code]...
The strange thing is that for other forms in my code it works well and starts with the form_load function.
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Dec 26, 2009
I've been looking around on the internet for something to do this, but I have not found anything straightforward. Can anyone help? I just want to draw an image that pretty much "Highlights" an area in a bitmap. Anyone know how to do that?
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Aug 15, 2011
Asking for little guidance again... For my custom control, I grouped some properties in some class. Then in the main control code, I use:
[Code]...
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Jan 25, 2012
I have a data table that I am updating. The table has 5 rows.The first row in the data table that has an ID of 1 will not update with new values, but the rest of the data table does update, I can't figure out why.
It is an access database I am updating, Is there a problem with my Update String? Because it updates all of my table except for the first row that has an ID of 1.
Dim sqlSSRTotalUpdateParameters As String = "UPDATE [SSRTotalChecker_" & FullName & "] SET [Totals]=@Totals,[Category]=@Category,[Materials]=@Materials, [Labour - Field Effort]=@LabourFE," & _
" [Labour - PMO]=@LabourPMO, [Labour - Supervision]=@LabourSuperv, [Labour - Administration]=@LabourAdmin," & _
[code]....
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May 28, 2009
i have a dynamically created gridview button that fires off a modal popup when clicked. I do this onclientside like so:
function openModal(btnId, v) {
deptdata(v);
// __doPostBack('<%=DropDownList1.ClientID %>', '');
[code].....
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Mar 5, 2010
I am entering data in a dataGridView, I have a column named with 6 characters.The first 3 characters are always "HHH"When I enter in this cell, Is there any way to put automatically these 3 characters and start to write in the fourth one?
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May 31, 2012
this works partially but if I close the reg key as shown I get an error [code]So my question is how/where do I place the Myreg.close and OldReg.Close commands???
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Jan 5, 2011
ive got a small code which takes a strign given by the user, searches for all folders with in a folder for matches then lists them, which is this:
vb
If e.KeyData = Keys.Return Then
Dim lb1s As String = Application.StartupPath() ''The folder to search in
[Code]....
The results are added to a listbox and all works great, but how do i get it to add partial matches aswell? For example if the search string is 'testing' and theres folders called 'testing on' 'testing testing' etc to show those in the results aswell?
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Dec 17, 2011
A panel with enabled scrollbars has many buttons. If I push the tabulation key, focus navigates between buttons.When a partially visible button has focus, the panel scrolls itself in order to completely show the button.
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Oct 2, 2008
Dim sqlConn As New SqlConnection("Server=.\SQLEXPRESS;uid=;pwd=;database=ContactManager")
sqlConn.Open()
Above is my connection string, The programs runs up until sqlConn.Open() and then i get the same error, using no UID and Pass, or using a uid and pass.
Login Failed For User ''. The user is not associated with a trusted sql server connection
I have the SQL Servers authentication se to Windows Authentication and SQL Authentication. I'm using Visual Studio 2005 and SQL Server 2005.
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Dec 19, 2009
I am trying to use the Web Browser control in my vb .net user control. I am using VS 2008. Finally, I will be calling my assembly (.dll) from a web page. I wanted to display the usercontrol with the web browser control inside this web page. The problem is I cannot proceed since the Web browser control cannot be called from a partially trusted assembly. Using VS 2008 I have created a strong name for my class, also added the <Assembly: AllowPartiallyTrustedCallers()> to the AssemblyInfo. But still the web browser control cannot be seen in my web page. Do you how I can make my assembly fully trusted so that it can access web browser control? If you have used web browser control, can you confirm if this step is really required?!
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Jul 29, 2011
i am having a console application. I am trying to connect to a sql server.
my connection string: Data Source=<Some server>;Initial Catalog=<some database>;Trusted_Connection=True.
when i am executing on my local machine it runs successfully. But when i am trying to run it on a server it is giving me the following error:
Login failed for user ' '. The user is not associated with a trusted SQL Server connection.
do i have to change my connection string? if so what it should be?
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Apr 2, 2009
Attempting to pull WMI Win32 properties information from a server in a trusted domain using the delegate string listed at bottom and receive the error listed below. The account has fullpermisions on the target server's root and subs WMI namespace and wbemtest connects fine. And all servers are in 2003 Native AD forests and trusted for delgation?
Error:
Scriptname.vbs(20, 1) (null): A security package specific error occurred.
Connection Moniker:
Set objWMIService = GetObject("winmgmts:" _
[code]....
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Mar 24, 2011
I have a VB project using VS 2008 Pro that I have been working on my Win XP SP3 PC for a while now. I am now moving to a different PC with Win 7, 32 bits. I installed VS2008 and VS2010 (also Pro) on the new PC. The source is stored on a server on our network. When I tried to open the project with VS2008 on the new Win 7 I got the following message:The project location is not trusted:
\DevServerProjectsSysMon Running the application may result in security exceptions when it attempts to perform actions that require full trust.I then click Ok and another dialog comes up mentioning:This project includes a password-encrypted key used for signing. Enter the password for the key file to import the key file into the local cryto-store databse for use.The dialog lists a pfx file. Why is it requiring this?
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