Asp.net - Context.User Is Nothing ONLY When Trying To Debug?
Jul 27, 2011
I have a project that I have upgraded from .NET 1.1 to .NET 4.0. The project uses Windows Authentication (internal Intranet webpage). I setup Windows Authentication in IIS 7.5 (running Windows 7) following the steps laid out in this article.[URL]..I can now build the project. I can open the project by opening IE and typing in the URL on localhost. However, if I try to debug the project it throws an NullReferenceException on this line in the Application_AuthenticateRequest in Global.asax.
dt = oDBLookup.GetPIMSUserRoles(Context.User.Identity.Name)If I set a breakpoint there I see that Context.User is Nothing. If I set a breakpoint in the same place on the 1.1 project (different box, running IIS 6) it has my Windows Credentials.Why would Context.User be Nothing ONLY when I am trying to run from the debugger in Visual Studio 2010 Professional, and not when I open the web project directly in IE?
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Feb 14, 2011
What I hope is relevant code below, I would like the User to be able to Right click when hovering over the PictureBox container of a User Control and pop up a menu which allows a User to check or uncheck an item in the context menu. How can I acheive that?
[Code]...
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Jul 23, 2011
of field with working in the registry and shell but I figured I would ask this question. I want to learn how to make a shell context menu associated with my program for a given filetype or any filetype
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Feb 12, 2012
working in the registry and shell but I figured I would ask this question. I want to learn how to make a shell context menu associated with my program for a given filetype or any filetype. But I want to know how I can add it and remove it.
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Nov 24, 2010
I have a Windows Service that needs to start other processes under a user context other than that used by the service. I've seen other posts related to this but have seen no resolutionI've tried many things and have been unsuccessful in starting the process from a Windows Service when a username, password is supplied. orking as it's a requirement of our system to do this and it worked fine until recently and only fails on Vista and Windows 7 (works on XP).
The following code is used to start the process.
Dim P As New Process
P.StartInfo.Domain = Domain
[code].....
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Jul 8, 2010
I'm trying to mimic some functionality in the program below: [URL] *scroll down. it's the "Big Free Clock" link* Developer has made it stretch the font depending on size of form, and also allows user to increase/decrease font with context menu. I have not been able to replicate this using only the Font properties. How is this being done, and how can I achieve the same functionality?
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Jun 29, 2012
I sent the application exe to a user to test and they get an unhandled exception error and the details show my personal My Documents Folder/DEBUG path from the project. So I tried to use Application.ExecutablePath but when I release that it points to "My Documents" Folder (not the debug) folder. The file to open is in the same folder as the exe is in but for some reason the error occurs because the application is not looking for the file using the path where the EXE was launched from. Here is my code that relates to the section giving my users a problem:
from the module
Public Class shrd
Public Shared ocSess As cSession
[code]....
How can I get the application to open the file that is in the same folder as the exe when the user launches
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Mar 28, 2012
I've got a dynamically filled datagrid view. When a user right clicks a cell in the datagridview, it opens a context menu, located by that cell. The context menu has two choices: A and B. I want to set the value of the cell to A if they pick A, and B if they pick B.I would like to pass the relevant cell as a field in the event args passed to ContextMenu's ToolStripItem.click. So the handler for ToolStripItem A's click event would read the relevant cell from the event args and set it to A , like this...
Private Sub A_Click(ByVal sender As System.Object, ByVal e As Customized System.EventArgs) Handles A.Click
e.relevantCell.Value=A
End Sub
how to pass a custom event arg. Or if there is some easier way to do this? I can't just use the X and Y coordinates, because the context menu/mouse won't necessary by over the relevant cell.
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Aug 20, 2009
When bulk renaming files (14000 of them) i get this error: The CLR has been unable to transition from COM context 0x4cefd8 to COM context 0x4cf148 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations.
My code is as follows:
Private Sub frmTest_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim asd As List(Of String) = FileIO.FileSystem.GetFiles("D:Music").ToList
Dim rs As New ADODB.RecordSet("SELECT * FROM Songs", My.Settings.Files_Database__Connection)
[code].....
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Aug 31, 2011
Simple question that does not seem to be covered: If I use a lot of Debug.WriteLine statements in my code, will they be completely absent in my production version?
I mean: Is the compiler smart enough to not emit any code for those calls? Or would I have to surround them by #if DEBUG..#end if directives?
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Jun 8, 2011
I got this message because of a long process: ContextSwitchDeadlock was detected
Message: The CLR has been unable to transition from COM context 0x3dc190 to COM context 0x3dc300 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time.
To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations. I've poked around on the internet and on a forum, someone suggested to use application.doevents(). I did that and the messaged goes away. In an earlier thread a member wrote that using application.doevents rarely was used appropriately. Is my situation a proper usage of application.doevents or is there something else I should be doing?
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May 15, 2010
VB express 2008 .net 3.5 or .net 4.0 VB express 2010?I have written application to convert RTF to HTML. The main Purpose of the application is to copy VS code to the clipboard and covert it then put it back into the clipboard as a HTML Document so that it can be pasted into a HTML document such as Windows Live Mail. I found that code copied and pasted is spaced out in in the wrong positions.
The applications works perfect with no bugs so far. I then asked Myself how to go about doing the copy with the least amount of operator interaction. So I added an Icon to the Icon Tray with a right click menu to use to convert once the Rich Text Format was copied to the clipboard. This works fine except you have Five steps, Select the text, Copy to clipboard, Right Click the icon, Select the Converter and Paste. The normal is three steps.
To this the best solution is to add a context menu item to the active form such as the RTF editor or window. So that when you select the Rich Text to copy and right click on the form to bring up that menu then to Just Select the menu Item such as "Copy RT and Convert" I searched and found about 544000 Items and tried to restrict down to no avail. I read until I finally gave up. I did not find any code examples of this. Almost every thing I found related to the web or some other explicit document like Excel and not to the Various windows that could be active with RT in it.
how do you add a context menu item to the context menu of an active rich text format window such as WordPad or VB?I have test in my application that tests to see if it is a RTF in the clipboard so if it is not the converter does nothing.
Imports System.Threading
Imports System.IO
Imports System
[code]....
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Jan 5, 2009
I have the following codes:
me.hide()
staff.show()
It run smoothly for the first time,but when I execute it for the second time,it occured the following errors:Unable to copy file "obj\Debug\FYP.exe" to "bin\Debug\FYP.exe". The process cannot access the file 'bin\Debug\FYP.exe' because it is being used by another process.
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May 28, 2011
Exception Details: System.Web.HttpException: Request is not available in this context.[code]
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Jun 3, 2009
Is there another way to add a Context Menu to a ToolStrip other than using the MouseDown Event? I want to use it to let people select to either show text labels on buttons in the ToolStrip or turn them off.
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Oct 27, 2010
How to put my video player to the context menu? But I also need to know how to make it so that when my video player opens that it will it will load the file that I wanted to open with my video player.
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Jul 14, 2010
I get this error mssg; Microsoft.Net Framework//An unhandled exception has occurred.Cannot Generate SSPI Context.The SQL Server is on a SERVER and my program is on the client machine.I believe it (Client machine) is loosing its network connection. Because once I re-bot the system it connects fine.I am going to try and PING the SERVER when it comes up next to check the connection.I tried googling this for a resolution but to no avail.Do u think I will have to reload the OS on the client machine or just the Framework.
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May 1, 2010
Is there any way I can assign a Context Menu with a button on my form?There is nothing in the properties window that allows me to do this.
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Jun 14, 2010
I Wont Save Selected Traget & Save Selected Image& Save Selected Link& Copy Image& View Iamge
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Feb 2, 2009
I have an application that is simply an icon that sits in the system tray, with a context menu that opens upon right-clicking. One of the options in the menu is a text box where the user can enter a number, and press enter to perform a specific action (which is not significant to my question). The problem with this, however, is that if the mouse moves away from the text box, the menu closes.
Is there a way to keep the menu open as long as the text box has focus no matter what?
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Feb 15, 2011
calculator similar to the Standard Windows Calculator. Your calculator should perform the same operations as the standard calculator.
I JUST WANT TO KNOW HOW MAKE Context menus
- FOR THESE Memory buttons: MC, MR, MS, M+
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Dec 21, 2010
I have an application. If I press a button, a menu show up.
How do I get a handle to that menu?
I use spy ++. It seems that the menu is not a child of the button.
I use FindWindowEx but I don't think I got the right handle.
Here is another possibly related question
Why the handle of a menu is of type HMENU rather than HWND?
In VB.net they're both integer right?
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Jul 15, 2009
When import image to project. It shows a form and in groupbox resource context ,There are 2 options : Local resource and Project resouce file.appearly : In the first option i dont see any image in project. wherre is it ??
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Jul 22, 2009
So what does this mean and how do I fix it? This message occurs if I place the New keyword in the line(s) below. If I remove it, i get an error at runtime saying I need to use New. What am I doing wrong? Code:
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Jan 23, 2010
how use context menu on browser and close menu windows
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Sep 20, 2011
I've been upgrading my vb6 app to VB.NET and so far everything was going on smoothly until this morning. I'm getting this message : value cannot be null. parameter name context when trying to save or when adding new controls. It's kind of a random error, it does not always happen when saving or adding new controls
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Oct 17, 2009
I've attached a context menu to a richtextbox. This textbox contains lines of data, and I want to find the text of the line which the user has pressed.I found how to do it after the user has chosen one of the context menu items. But I can't figure out how to do it before or when the context menu is opened. The reason for that is that I'd like to disable one of the context menu items if the line of text is missing some text. I tried the following but it's not working:
Private Sub ContextMenuStrip1_Opening(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs)
RichTextBox1.GetLineFromCharIndex(RichTextBox1.SelectionStart)
Dim line As Integer = RichTextBox1.GetLineFromCharIndex(RichTextBox1.SelectionStart)
[code]....
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Aug 12, 2010
I was reading the MSDN manual, I was reading about the about the binding.source property. I got a little confused because the manual started taling about the data context property. My question is what is the data context property ? Whenever I look through the properties of an object ( either textbox, datagrid etc ) I can't see this property listed anywhere.Could it be that the version of visual basic that I'm using ( which is Vb 2008 express ) doesn't include this property.
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Aug 30, 2011
I have the line in vb code:#if Not Debug which I must convert, and I don't see it in c#?
Is there something equivalent to it, or is there some workaround?
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Aug 31, 2010
Is it possible to assign a value to a class variable from inside a #IF DEBUG conditional? Basically what I want to do is conditionally execute some code from inside my main form load if I am running in DEBUG mode.[code]However, it seems like you cannot assign a value to a variable. I'm obviously not understanding the scoping correctly.I cant seem to put the #if DEBUG inside the Load.
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