I have a Windows Forms project that is getting an error running on Windows 2008 server. I need help determining the problem based on the Problem signature information:
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I was trying to use a GetAsyncKeyState code but each time I run the program an error occers where
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'A call to PInvoke function 'WindowsApplication1!WindowsApplication1.Form1::GetAsyncKeyState' 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.' The full code is in timer with (1) time interval
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using one form information to be transferred to a second form the code becomes invalid after an validation error has arisen from the first form (ie no adult passengers was selected and the error message was displayed) when corrected the information to be transferred become incorrect as the information is transferred without the correction. [code]
View 1 RepliesI'm planning on using the Smart Device Framework 2.3 to use the signature control panel in a Windows Mobile 5 application using the compact framework 3.5.
The control has the option to save the signature as either a byte array of points, or as a bitmap. Now seeing as I want to store the signature in a sql compact database, I guess the byte array is going to be better. The trouble is, I'm not sure how to render that in a full WinForms application after I've transferred it back to the desktop.
I need to show the signature on a report, so it would need to be an image I could link/embed into the report.
Just like an array in a group box or a frame as i used in vb6.
If there are 5 customers details then when i load the form it will add (PictureBox, Label and a listbox) for each customer dynamically and display them with their information. Moreover, if i add 6th Customer information in the database then next time i load the form it should display his/her information as well. I did this in VB6 sometimes back but need a start to do in .net
Private Sub LoadCustomerInformation()
Dim Qry As String
Dim RS As New Recordset
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I need to create a windows app for tablet to get signature.VS2008 do not have any control for it.Does vs2010 have this kind of control so that user can use pen to create signature in tablet?
View 1 Replies"Method 'Private Sub Player_Control_PlayPause_Click(sender As Object, e As System.EventArgs, CurrentSong As String)' cannot handle event 'Public Event Click(sender As Object, e As System.EventArgs)' because they do not have a compatible signature. Form: MainPanel.vbLine: 21 Column: 177
My code is here:
Imports System.IO
Public Class MainPanel
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how can i capture a signature from an Electronic Signature Pad and store it in database. is there any particular api or it can be captured just like capturing an image from a WebCam. Is it manufacturer specific?
View 2 RepliesWhy does this:Private [Function] As Func(Of Double, String) = Function(ByRef z As Double) z.ToString
gives the following error:Nested function does not have a signature that is compatible with delegate String)'.
While this:Private [Function] As Func(Of Double, String) = Function(ByVal z As Double) z.ToString
Does not? (The difference is ByRef/ByVal)
Furthermore, how might I implement such a thing?
I'm upgrading a project from VB6 to VB2008.I have a routine that clears a combo box, named 'cmbDataTable' which could be on any form. I pass the form and the combo box is cleared.
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I assumed it would be the same in VB2008 but I get the error.'cmbDataTable' is not a menber of 'System.Windows.Forms.Form'I am working my way through the project, first updating the global procedures - this is one - I haven't written the calls so cmbDataTable doesn't yet exist.
I can use MDI to detect if x86 or x64, but it's painfully slow. How can I quickly, using VB.NET 2005, determine if the Windows OS is x86 or x64?
View 10 Repliesgetting an error when creating a new record in SQL db from a windows app form.Here is the error:
System.Runtime.InteropServices.COMException (0x80004005): Data provider or other service returned an E_FAIL status.
at ADODB.RecordsetClass.Update(Object Fields, Object Values)
<code>[code]....
Error is occurring on the update step.
I have windows xp professionalx64 installed on my C:/ drive and windows xp home edition installed on my D:/ drive, i have adminstration priveledges.This is the error i receivedError while trying to run project: Unable to start debugging.Microsoft Visual Studio Remote Debugging Monitor (MSVSMON.EXE) failed to start. Verify that the remote debugger is installed.I uninstalled Visual Studio 2008 Professional and reinstalled it
View 8 Repliesi got error stated :"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."when i tried to run function from a dll file. I searched many forum but can't get a suitable solution. urgent help needed.
here is my
Public Declare Function CXCMD_LoadCard Lib "PCP02CT.DLL" (ByVal iSlot As Integer, ByVal iID As Integer, ByVal iDest As Long, ByVal bflip As Long, ByVal blmmed As Long) As Integer
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Code:
Public Class SendPings
Shared Sub New()
AddHandler Post.Saved, AddressOf Post_Saved[code].....
I get a error" Method 'Private Shared Sub Ping(item As BlogEngine.Core.IPublishable, itemUrl As System.Uri)' does not have a signature compatible with delegate 'Delegate Sub WaitCallback(state As Object)'.
Is there any method using VB.NET API to detect Win Edition (e.g. Home/Professional/...)I tried the sample i found here How can I determine the Windows version from a VB 6 app?, but osv.OSVSize = Len(osv) gets me an error in VB2010Espress: Variable 'osv' is used before it has been assigned a value...
View 2 Repliesin Visual Studio 2008 Visual Basic, keep getting error 91 trying to use a fixed-length arrray in a windows form. am importing System,System.IO,System.Data,Microsoft.VisualBasic,System.Data.SqlClient. declared at start of class entry for form . have tried both Dim and Public, as Values(0 to 50) As String. then referenced in a procedure as Values(1) = I have read do not indicate that I need to use a Set or New function.
View 4 RepliesHow to determine windows build number using vb.net or c#? I do not want to use win32 API.
View 3 RepliesI though I had solved this problem, but it is back:Code generation for property 'SelectedPeople' failed. Error was: 'Type 'ECS.Entities.Persistency.Person' in Assembly 'ECS, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' is not marked as serializable.'The property on the error message is a List(Of Person) and for some reason it trigger this error, for almost anything I do, and its getting really anoying.Okanswering to the answers here is a little more information about the problem.
Yes it is during design time, it happens bascially anytime a open a form that has a UserControl that contains the Selected property in it, sometimes it happens even if I don't have focus on the form, also if I try to compile/run it happens and the message come in the form of a Message Box with just a OK, ECS.Entities.Persistency.Person is just a LINQ to SQL Generated Class, this should not matter at all to the problem, although I have added the attribute before the posting.he reason that this happens is because the Designer attempts to put the property on the Property Panel, and for that to happen, serialization happens.tryed to hide the property from the designer by using this attributes.
<DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)> _
<Browsable(False)> _
Public Property SelectedPeople() As List(Of Person)
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I'm trying to program in a true object oriented manner and its causing me to re-learn a few things. Specifically, I'm having some trouble with error handling. I have all of my data access being performed by an adapter class in a seperate project. I can catch duplicate records without any problems, but I want to be able to send a message back to the user. Here's what I have so far:
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I'm using a VB.net process to shell another exe process (which will wait until completion before processing is continued in the main app); however, I need to know if there is an error in the shelled exe process before continuing in the main app.
View 2 RepliesI'm interested in having a generic 'Try Catch' clause, with some case statements or if/than statements within the Catch part so that I can handle different error types differently. some way to get ex.Errorcode or ex.ErrorType that differentiates the different errors to a unique value.
How can this be done?
Try
'some code taht will throw an error'
Catch ex AS Exception
If ex.ErrorCode = 20 then
' Do something'
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I have created a vb.net program and released it to the customer. They are running the exe and at times the program crashes unexpectedly and display the message: "... has encountered a problem and needs to close" I know I should have added code to handle the exception, but is there a way that I can find out which line in the program caused the error? What is generally as good way to track errors in a program after it has been released?
View 1 RepliesI'm looking for a straightforward means of pulling all the users who have access to a folder with vb.net.All I need is the user name, not the type of access they have.
View 1 RepliesWhen debugging in VB6 it was easy to find the name of the active form because it was automatically highlighted in the Project Explorer.
How do I find the name of the active form in VS2010?
How to determine whether form is it inside the desktop?
View 3 RepliesMy program has many forms that can be launched from the main form, and when launching a form, I need for my program to know whether or not there is already an existing instance of the requested form open before it launches the requested form.
So, if I have form "Search" with button "View" that launches form "Details", I need to know if the "Details" form is already open when the user clicks the "View" button.
Apparently, if I had developed my application as an MDI application intead of an SDI application, I could just do "If frmDetails.visible = True then DoStuff()", but the Details form's Visible property always comes back as False, even when the form is already open. If the form is always being reported as not being visible even when it is indeed visible, what method do I use instead to find out that the form is open/visible/in use?
im trying to find the top most window other than my form or its parent form...Background:Im writing software for a TS-MFD (touch screen - Multi function display), it has a docked menu bar at the bottom with the option to pull up an onscreen keyboard. Now the keyboard ive written and works well but the only drawback is i need to specify what window to send the keys too, be it inside my own application or a 3rd party app such as notepad. I believe the answer lies an recursively looping through GetForegroundWindow() from user32.dll and ignoring "Keyboard" and "MenuBar", but I dont know how to advance to the next top most window, i only know how to get the top window...so my window order is likely Keyboard,Menubar,(then the window im trying to grab)?
View 7 RepliesI have three buttons on my main form, say Form1. Clicking any of the buttons brings up Form2 modally for input, it's a number pad. Now, depending on which button was clicked to get there, after the user enters his numbers, I need to change a specific label on Form1. In other words, btn1 clicked puts user input into lbl1 and so on... I could probably do this with a variable but wondering if there is a more elegant way.
View 3 RepliesCan I connect phone landline to my computer and when someone call me his information appears by his phone number this information already exist in database.. I want to know is it a service from communication company or can i do it by code just plug the cable into my computer ?
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