I have a freshly initialized array that's being passed to a sub routine ByRef to be populated. The array is always empty when passed to the sub routine, which ReDims it as necessary.However, VS complains about this in a Warning:
Quote:
Warning1Variable 'MyArr' is passed by reference before it has been assigned a value. A null reference exception could result at runtime.
Dim MyArr() As Integer
Dim AnotherArr() As String
Call MySub(MyArr, AnotherArr)
The MySub routine populates both arrays. This Warning is meaningless because I very specifically want to pass the arrays to the sub routine BEFORE assigning values because those values will be assigned by the sub routine.Can I disable this type of Warning? No null reference exception will occur because that is being handled by the sub routine.
I have an application I am developing in Visual Studio 2010 with Visual Basic. Eveything has been fine with no errors, warnings or messages. Now I am getting this and am not sure what part of my application is causing it. It looks like Datasets may be one of them? Any help would be great. It still compile runs and works on client PC however if there is a glitch in the application I want to fix it.
Warning 1 At least one of the arguments for 'ILabelObjectDs.get_ObjectName' cannot be marshaled by the runtime marshaler. Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.Warning 2 At least one of the arguments for 'ILabelObjectDs.get_Value' cannot be marshaled by the runtime marshaler. Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.
Warning 3 At least one of the arguments for 'ObjectStringSubString.get_ObjectName' cannot be marshaled by the runtime marshaler. Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.Warning 4 At least one of the arguments for 'ObjectStringSubString.get_Value' cannot be marshaled by the runtime marshaler. Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.
I need to render a datagrid with different kinds of cells in the same column. For example, I have a datagrid with a column "name" and a colmun "value". Depending on the "type" of my record, I would have different cells in the column "value" like a combobox or a simple textfield. and I don't really see how to do that programmatically... I don't know if the datagrid is the best choice. I'm using asp.net/vb.net with framework 3.5
we know that in Visual Studio, you can open a different kind of database: like: Access, SQL server or file, Oracle. is there any reference that you'v know on how to make that kind of program? i don't know where to start.
The LoadFrom() method takes the assembly filepath as its argument, but the filepath is merely providing the assembly identity information as a clue to the CLR. The LoadFrom() method still internally calls Load() with that identity information. So it is quite possible that LoadFrom(filepath) will load a totally different assembly from the one specified by the filepath. But the tame LoadFile() method will just load the assembly we specified.
I am wondering why do we need the LoadFrom() method? It adds nothing but confusion and pitfall. Is there any scenario that only LoadFrom() is applicable?
I'm wondering if anyone knows how to disable a keyboard key. This is because I am working on a space invaders game. In the game I have ammo. So after the ammo = 0 I want to make sure that the player cannot continue to keep shooting (using the keyboard) even though there is no ammo left.
Leaves the user no options to do anything with the program.What I want is to disable everything using the given line (or if anything else), but leave a Menustrip enabled.
I'm making a security program that locks the users screen. I have already figured out how to disable task manager but now I need to disable the task bar from showing and the start menu. Also, trying to do an event on alt+F4 doesn't seem to stop the program from exiting. Any other solutions? This program is intended for security reasons and I am not using it for any viruses.
In the project I am doing at the moment I want to disable the Exit ( X ) buttons in the top right corner of all my forms. So I found out this code which I�m using and is working fine:
Protected Overrides ReadOnly Property CreateParams() As CreateParams Get Dim cp As CreateParams = MyBase.CreateParams
I am disabling line items in a combobox I have based on various test conditions (see code below). The problem is that when I first open the combobox my method below isn't getting called. It only gets called when the mouse hovers over each line item.
This is resulting in the list looking very different before/after a hover (see png file for a before/after picture).
how to show the list disabled on open?
Private Sub ComboBox31_DrawItem(ByVal sender As Object, ByVal e As System.Windows.Forms.DrawItemEventArgs) Handles ComboBox31.DrawItem Try
I have 2 DatagridViewChecKboxColumn. What I want to happen is that a(Submit)button will be disabled until the checkbox2 will be checked. How will I do this if my checkboxes are DataGridViewCheckboxColumn? What loop will I do,because there's a possibility that I'll be checking the last checkbox?
I found this, but it's not working.
If (DataGridView1.Columns(e.ColumnIndex).Name = "Child") = True Then btnConso.Enabled = True ElseIf (DataGridView1.Columns(e.ColumnIndex).Name = "Child") = False Then
I'm not sure what I did to cause this. I just opened my program one morning and had a warning staring me in the face. I'm guessing by the common reference to VBIDE they are all cause by the same problem. What do they mean and how do I solve them.
Warning1Cannot find wrapper assembly for type library "VBIDE".DM Code Calculator Warning2Unable to apply publish properties for item "microsoft.vbe.interop".DM Code Calculator Warning3The referenced component 'VBIDE' could not be found.
I have a bunch of warnings dealing with Crystal Reports, which I was going to use in the program but change my mind. deleted everything I can find dealing with Crystal Reports to no avail. I stall have 20 warnings.
I have VB.Net code in VS 2008 using an obsolete method, and would like to suppress the warning.Unfortunately, following the recommendation is not a good solution, because it requires using a different class, which works differently, in important ways.I'm trying to suppress the warning using System.Diagnostics.CodeAnalysis.SuppressMessage, but I don't know what to write as the parameters for the attribute, and can't find any relevant reference.
I should also say that, right-clicking on the error in the error list I don't have any 'Suppress Message' option.
So my project works exactly as I want it to. But I have these 2 similar warnings when I Build. I would like to understand and get rid of if possible. [code]
I'm using VS 2005, after VB6 to VB.NET conversion we have fixed all the errors but still have unidentified number of warnings. Is there any way to increase this limit of 101 warning you can see after compiling? I want to actually see the total number of warnings to get an idea how much work is there.
Was looking at some code earlier, and am thinking that there has to be a more elegant way of writing this...(returnVar.Warnings is a string array, it could be returned as any size depending on the number of warnings that are logged)
For Each item In items
If o.ImageContent.ImageId = 0 Then ReDim Preserve returnVar.Warnings(returnVar.Warnings.GetUpperBound(0) + 1) returnVar.Warnings(returnVar.Warnings.GetUpperBound(0)) = "Section: " & section.<header>.<title>.ToString & " , Item: " & item.<title>.ToString End If Next
Is there a way in Visual Studio (2008 or 2010, don't care right now which one) to show all warnings and/or messages in a project?Currently, I see all warnings and messages for all open files/documents. It would be handy if I could switch an option somewhere or something to show all the warnings and messages without needing to open everything.(I ask this as I'm developing a web site in VS that I have inherited from an ex-colleague and there's lots of messages per page regarding outdated attributes and the like)
I am creating my very first Service application and it seems to be quite simple to do. I want to create an eventlog so I can write away any exceptions that may occur. Is this the correct way? I have the following
If Not MyLog.SourceExists("MorrisonsSync") Then MyLog.DeleteEventSource("MorrisonsSync") End If
Is there anyway to disable the vb.net (2008) express popup for converting older projects as well as the security warning to browse the project? I'm fairly new to vb.net so of course I download lots of examples to learn off of and it is BEYOND annoying to have to convert every demo and then click ok to browse the code.
For our VB.NET websites we use SVN for Source Control and CruiseControl.NET for continuous integration.
To use the SVN build number in the compilation by CruiseControl.NET we need to use Web Deployment Projects. We then replace in the configuration file the Version field with this variable from SVN Labeller[code]...
I've just converted a project from .net 1.1 to 3.5, and I'm being given loads of warnings in the error list. The program compiles and runs ok, but I think I should probably try to at least reduce this large number of warnings.The trouble is that the error list only tells me about the first 102 warnings. Even when I fix one, the number stays at 102. So I have absolutely no idea how many warnings there actually are. If there are 150, I'd like to get rid of them. But if there are 10,000, I don't have the time to fix them all.Is there a way to see the actual total number of warnings?
VB.NET has this rather annoying limitation which caps compiler warnings reported at 100.vbc : warning BC42206: Maximum number of warnings has been exceeded.This makes things rather frustrating when trying to size up the amount of effort that would be required to comply with VB.NET best practices, such as enabling Option Strict.
I found some code on the internet as below (slightly modified).It simply requests the content of a webpage.However I get two warnings:
Warning 1 Variable 'srRead' is used before it has been assigned a value. A null reference exception could result at runtime.
Warning 2 Variable 'Str' is used before it has been assigned a value. A null reference exception could result at runtime.
I know I can simply forget about the Finally and add the code to the try block.Will that be the way to go or can I prevent the warnings using a different approach?
I have an application that works with a database that uses foreign key constraints.
For example, we have an inventory table that has a foreign key constraint that references a table called case_names. If a user attempts to delete a case name that has any inventory items referencing it's ID, the action is restricted.
How can I display a message to the user that they will understand? 'You can not delete this case as it still contains inventory items.'
My thought is a try-catch (catching different error types?) but I do not really want to use this for something that may be expected.
What does this warning mean and how can i get it to go away.? Warning1Function 'ipAddr' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used.C:Documents and SettingsHP_AdministratorDesktopMoney Manager in MysqlMoney Manager V1connection.vb385Money Manager V1
I don't know why or how but my project just turned into a not working system with hundreds of warnings... I didn't touch any of the assembly or anything that could do this and I don't have a clue. I have backups but one days' work will be gone if I can't resolve this.I got warnings like these:Warning1Could not find type 'crm.MyTextBox'. Please make sure that the assembly that contains this type is referenced. If this type is a part of your development project, make sure that the project has been successfully built.00 Warning2The variable 'txtQty' is either undeclared or was never assigned.L:MartynascrmEquipmentSale .Designer.vb3270Warning3Could not find type 'crm.Mycombox'. Please make sure that the assembly that contains this type is referenced. If this type is a part of your development project, make sure that the project has been successfully built.00 Warning4The variable 'cmbProduct' is either undeclared or was never assigned.L:MartynascrmEquipmentSale.Designer.vb3310 Warning5Could not find type 'crm.MyTextBox'. Please make sure that the assembly that contains this type is referenced. If this type is a part of your development project, make sure that the project has been successfully built.00
