I'm getting a "IndexOutOfRangeExeption was unhandled" in my project
Private Sub LookUpButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles LookUpButton.Click
'Look up the information on the state.
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I'm about ready to give up and go another route. I just thought I'd ask here.
I have one radio button and one listbox .i want code for display listbox depends on the radio button check true and false.
View 3 Repliesi have problem that i know once someone answers, i will kick myself, but here goes. i need to move the text next to the radio button to the left of the radio button, that part is easy just make sure the the "right to left" is maked yes, got it. but, the problem is i am making a seating chart and the seats are labeled 10-a, 10-b etc.... when the right to left is set to yes my text reverses and becomes a-10 and i can't seem to figure out what is set in the properties the is causing the alpha to be placed before the numeric.
View 2 RepliesI use DataGridView in my project. Everything worked fine until I added some code in the RowValidating event. During the form_load event exception is thrown on the statement that set the datasource of the DataGridView.The project uses bindingsource for the datasource of the DataGridView. My validating code is shown below:
Dim currentRow As DataGridViewRow = Me.dgExpenditure.Rows(e.RowIndex)
Dim incexpCell As DataGridViewCell = currentRow.Cells(0)
If Not Me.closingBoolean Then
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I debated whether or not to ask in the database section, but decided this was probably more of a VB question, than DB.I'm performing a query on my database and add its value to a DGV. At the moment, I'm just running tests to make sure the base example works so I can expand on it for more advanced tests.[code]It doesn't matter how I add the row, just adding it causes the error. And yes, the AllowUsersToAddRows property of the DGV is set to True, which wouldn't cause this problem anyway, but I decided to be extra careful.
View 1 Repliesi want to run a query and use the result for something else in my vb.net code. I have, opened the connection, passed the query and the connection object to the SqlCommand object and read it with the datareader object. The DataReader's HasRows property's value evaluates to true but i get an InvalidOperationException when i want to access the results of the query with the DataReader.[code]
View 1 RepliesI'm having an issue with updating a couple list boxes in the form load procedure. I have an array created from a MySQL database, and when I try to add that array to more than one ListBox, I get: A first chance exception of type 'System.ArgumentNullException' occurred in System.Windows.Forms.dll
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For Each ScreenName As String In da.settings_LinkedScreenNames
View 5 RepliesI have the following method to strip hidden and user-specified columns from a gridviewrow and return a tablerow. [Code] However, when I run this code and hit the Add method for the TableRow, I get an InvalidOperationException stating the Collection was modified; enumeration operation may not execute. I've gotten this exception before, but usually it's because I'm attempting to modify a table that is databound.
View 3 RepliesI am trying to show a dialog from one of my WPF view model commands however when i call ShowDialog() it throws a System.ArgumentException?
Here is my code:
Public ReadOnly Property OpenParser As ICommand
Get
Return New RelayCommand(Sub(param As Object) OpenParserExecute(DirectCast(param, Frame)))
End Get
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I was working with a class used to update database.All things were working for 3 years perfactly.Now it started throwing exception for two records only.When i edit these two records and try to save back to db it throws exception.Else it works fine.
View 3 RepliesI remove the datagridviewcomboboxcolumn from the datagridview and dispose it. When I go to dispose of the datatable that is the datasource to the comboboxcolumn an ArgumentOutOfRangeException is thrown from the datagridview. Apparently the datagridview is still handling events for datagridviewcomboboxcells for comoboboxcolumns that have been removed from the datagridview.
View 8 Repliesi am writing a program that will store some passwords in order to make it more user friendly. Ofcourse i want to encrypt it and so i started to learn how to use the 3Des encryption method.
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i am trying to develop a simple app to automate binding of data from access db for filling a form in a sequential order vb 2008 express. an error keeps coming up 'expression expected' on an sql query in the code i wrote. the code is shown below:
Private
Sub STARTButton_Click(ByVal
sender As System.Object,
ByVal e
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I'm getting this exception in the designer when I try to look the form that contains the tab control in design mode. After I click OK, the designer simply shuts down
View 1 RepliesVB2008 (in VisualStudio) and automation of tasks in Excel. My work env.: PC#1 - WinXP Sp3 with VisualStudio & Office O27k (all US-EN) installed, PC#2 - when I am not at home I use an Laptop with WinXP + O27k (DE) and VisualStudio(US-EN), but the mix of language does not seem to be a problem - at least until now!
In one 'TestBench' appl. I have the following line of: oWB.Names.Add("DR_AppData2", RefersToR1C1:="=OFFSET(AppData!R3C1,0,0,(COUNTA(AppData!C1)-2),1)")
Where 'oWB' is a WorkBook Object and 'Names' refers to named regions in an Excel worksheet. I am adding a new 'Region': DR_AppData2 and assigning a dynamic number of rows.
The above line works perfectly well on 'PC#1' but throws an exception on 'PC#2' and this has really irritated me, and I find no reason for this behaviour! The Project environment and included references / resources are truly identical, because I copy the project data from one to the other. The only real difference is in the object library reference, on 'PC#1' Excel.exe is in English, and on 'PC#2' is in German. Having said that I have also altered the value assigned in : "RefersToR1C1:=" to the equivalent in German, but the error thrown is the same.
I have attached :
1. Screenshot of the error
2. Exception Details
trying to write a simple form for calculating professor's salaries depending on their degree and position.my problem is that the when i select a check box, the value is not being updated until i select a different radio button. it probably doesn't make much sense here,
Public Class frmMain
Private Sub optLecturer_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles optLecturer.CheckedChanged[code]....
the values being assigned to my salary label are correct, but are not being updated until i select a new radio button. im not entirely sure how to get around this so that the value is updated as soon as i select the check box.here's when the program looks like:
I am trying to send E-mails asynchronously and it works fine as long as there isn't an AlternateView attached to the e-mail. When there is an alternate view, I get the following error:
Cannot access a disposed object. Object name: 'System.Net.Mail.AlternateView'
System.Net.Mail.SmtpException: Failure sending mail. ---> System.ObjectDisposedException: Cannot access a disposed object.
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I have done a access setting in registry in HKEY_CURRENT_USERSoftwareMicrosoftInternet ExplorerSettings. Here i have given no access to the "Setting" and when i try to create a linklable in windowform i am getting exception. Ex:
The control System.Windows.Forms.LinkLabel has throw an unhandled exception in the designer and has been disabled. Exception: Requested Registry access is not allowed.
Stack trace:
at System.Windows.Forms.LinkLabel.get_LinkColor()
Exception Text:
System.Security.SecurityException: Requested registry access is not allowed.
at System.ThrowHelper.ThrowSecurityException(ExceptionResource resource)
at Microsoft.Win32.RegistryKey.OpenSubKey(String name, Boolean writable)
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I'm calling Sqlcommand.ExecScalar() - stepping through the stored proc works fine, right under
RETURN @RecordNum
@RecordNum correctly contains a bigint, as scoped. When I step into the RETURN.. I get an exception thrown, that visual studio does not seem to be able to capture.
The stored procedure works fine when executed directly, and returns a value without problem, and it seems like all is well, stepping through it from my code.
But as soon as I step into 'RETURN @RecordNum' (and recordnum contains a valid number..) BOOM! EXCEPTION! (and no details in the exception either back in visual studio.
I'm blaming a glitch in the matrix.
I've turned off even assigned the return from the ExecScalar to anything, same result.. I've tried ExecReader(), same result. I have turned NO COUNT on and off, same result. If I wasn't already bald, I would be now!
Goal: Load a validated xml file in to memory, traverse through the document to create objects and load object properties with values in named xml tags.Problem: How do I deal with missing tags?Amplifying information: in this example, there are three values I'm looking for; name (mandatory), location (optional), comments(optional). I found the problem in prototyping the solution. My inital test was with an xml file wtih all fields present. It works fine as long as I don't have nanespace declarations in the root element. However, if I leave them in place I get a null reference exceptoin. The same thing occurs if I leave off an optional tag. It appears that if the Element I'm trying to get a value on doesn't exist within that element, a null reference exception is thrown.
Code:
Private Sub btnImport_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnImport.Click
Dim xelement As XElement = xelement.Load(txtXMLfileLoc.Text)
Dim ICAOxs As IEnumerable(Of XElement) = xelement.Elements()
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Okay, so I wrote a few custom ItemTemplates for VS2010 that implement IWizard in VB.NET (4.0). Straight forward enough. They work during my testing, but when someone else deploys and attempts to use any of them, Visual Studio throws an incredibly generic Exception has been thrown by a target of invocation error.
Stranger still, after they open up the project properties and try again... they work. Without changing anything. Anyone have any clue what is going on? Or perhaps even just a way of getting VS to give me a more specific error? I already tried devenv.exe /log but nothing out of the ordinary was there.
I've got a code sample below that will compile, but not run. Start it in the debugger by clicking the "step into" button on the toolbar, and an exception pops up before it reaches the first line of user code:
"Could not load type 'TestPrivileges.Win32Module+TOKEN_PRIVILEGES' from assembly 'TestPrivileges, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'."
Comment out either the 'Dim ... TOKEN_PRIVILEGES' line in the module or the 'Public Shared ... TOKEN_PRIVILEGES' at the end of the class, and the problem will stop occurring.Visual Studio 2008 as well as 2010 does it.
Module Module1
Sub Main()
Dim newState As Win32Module.TOKEN_PRIVILEGES = New Win32Module.TOKEN_PRIVILEGES
MsgBox("Here I am")
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I am using .net 2.0 and I am getting an exception of system is out of memory. My existing function takes datatable as input parameter which contains little bit large data (eg. more than 35000 rows) and in that function I am appending some xml node data and atlast I am returning the stringbuilder as a object.
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Error: System.Runtime.InteropServices.COMException (0x800A03EC): Exception from HRESULT: 0x800A03EC is thrown after execeution of Microsoft.Office.Interop.Excel.ApplicationClass.set_Calculation(XlCalc ulation RHS)
Out of nowhere COM start throwing exception when I set change excel's Calculation property. Line of code that followed set_Calculation was.Workbooks._Open. This used to cause exception every second try. Than I changed order, first open workbook and than set calculation property. Amount of exceptions start decreasing than I added thread.sleep(200) and exception is not thrown anymore. This happens only on one some of user machines while others are fine.Application itself is single threaded so this delay should be of importance if and only if set_Calculation is executed asynchronously. What I'm missing here?
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I try to create a XML file
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I get an exception? How do I get the XML-output as above ?
In my project I would like to call an exe so that exe pop up will come with a Login Screen with 2 buttons Login and Cancel.In those 2 buttons, login button is focussed default. Now my application should invoke the Login button automatically. Means there won't be Pressing ENTER KEY or Mouse Button Etc. Just after the Login Screen, there is a 2nd Screen that has 5 different Radio buttons, the 1st Radio button is always the default. So I also want to click this radio button automatically without using the keyboard or the mouse. y intention is that, the application should do that automatically.
I have tried with getting the handle of the focused Button by GetFocus method and tried to send that handle to the application by SendMessage and PostMessage. But it's not working.So can any body give some suggestion regarding this?
User will use a button1.click to open a filedialog to locate the file they needed. after which, the name of the file will appear on a textbox. Button2 is an OK button to write the filename into a txt file. Button2.click will work with the 3 radio buttons - meaning when Radio Button 1 is true and Button2.click is clicked, the filename will be saved asFile1.txt.if Radio Button 2 is true and Button2.click is clicked, the filename will be saved as File2.txt. Likewise to Radio Button 3
View 1 RepliesI am using WPF in VB. My window contains radio buttons and combo boxes. I am wondering how can I save those in textfiles?
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