The follwing code gives an error at runtime as highlighted in RED..
The error -
InvalidCast Exception was unhandled
Operator '=' is not defined for type 'DBNull' and type 'Boolean'
Private Sub DgvReturns_CellClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DgvReturns.CellClick
If e.ColumnIndex = 4 Then
[code]....
'Pankaj Pande
'IS 622
'AVL Tree Assignment
[Code]...
I am having problems with the code below. I have copied and pasted the code from a program that I wrote to test and see if the code does work. In that program it does. But when I use the same code in another program I get the following error message. invalidcast exception was unhandled conversion from string to type integer is not valid.
[Code]....
ok so i viewed some other question that are ruffly the same and i am still confused, here is the stacktrace
at Game3.My.MyProject.MyForms.Create__Instance__[T](T Instance) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 190
at Game3.My.MyProject.MyForms.get_Character_Creator()
at Game3.My.MyApplication.OnCreateMainForm() in C:UsersMasonDocumentsVisual Studio 2010ProjectsGame3Game3My ProjectApplication.Designer.vb:line 35
[Code]...
also, where is game3.my.myproject, obviously its a line of code but what is it in.
I was scripting a very basic process manager, with a ListView component, and it was working fine for many days, up until now.Here is the code for getting processes:
Dim Process As New Process()
Dim Count As Integer = 0
ListView1.Items.Clear()[code].....
The line of code where I put "*WIN32 EXCEPTION LINE* keeps running into an error(Win32 Exception was unhandled; Access is denied). Here is the full error description:
System.ComponentModel.Win32Exception was unhandled
ErrorCode=-2147467259
Message=Access is denied[code]....
As I said before, this had been working for several days, up until now.
Here iam trying to insert some values to SQLServer 2005 Database.The following error displaying.I changed the corresponding column size,still the error persists.how can i sove this error-:
'String or binary data would be truncated. The statement has been terminated'
iam trying to insert some values to SQLServer 2005 Database.The following error displaying.I changed the corresponding column size,still the error persists.how can i sove this error-:
View 4 Repliesnullrefererence exception was unhandled. I'm getting this error. could someone pls help
here is my code
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
WebBrowser1.Document.GetElementById("Email").SetAt tribute("value", TextBox1.Text)
WebBrowser1.Document.GetElementById("Password").Se tAttribute("value", TextBox1.Text)
WebBrowser1.Document.GetElementById("Signin").Invo keMember("Click")
End Sub
I have some code that uses the Windows Media Player Library capabilities to get around using ID3 tags. I keep getting this error however, whenever I add 1000+ songs to the datagridview:
For Each File_FullPath As String In My.Computer.FileSystem.GetFiles(My.Settings.Path, FileIO.SearchOption.SearchAllSubDirectories, "*.mp3", "*.m4a")
Dim WMP As New WindowsMediaPlayer
WMP.URL = File_FullPath
[code]....
Here is the code I'm using that gets the error:The problem is I need a way to clear the WMP.mediaCollection, but I don't know how.
Public Class Form1
Dim int As Integer = 0
Dim CustomerTable As New DataTable
Dim instance As New InvalidOperationException()
[code].....
This is the code this exception occurs when i click on the home button of my webbrowser.or i enter any site on the combobox.
So i want to grab information from a certain column in a database, however the user pics the column by the column name so it is a variable in the code
Dim SQL As String = "SELECT '" & Night & "' FROM TblContacts" ' WHERE Phone = '" & incomingtextno & "'"
Dim myOleDbCommand As New OleDb.OleDbCommand(SQL, con)
Dim current_count As Integer
con.Open()
[code]....
The user chooses the "night" then the program grabs the value from the column with that variable name, except i think i hav e the wrong syntax because i get the error "Index out of range exception was unhandled" - this pops up on the line
current_count += myDataReader.Item(Night).ToString and is pointing at the word Night.By the way when I say column the technical term maybe field, however it is a column in the database entries...
I am getting Invalid Cast Exception was unhandled.Conversion from String 'abc' to type 'Double' is not valid in the following line!
If
((xlBook.Worksheets(2).Cells(iRowIndex, iColumnIndex).Value)) = avFoundKeywordds(iSearchText)
Then
The business intent is that user enters the keyword 'abc' and clicks search button . We have defined different keywords in a xls which has 1600 rows and 16 columns . so when finding abc in any of the cells ,it has to return the value of a column#4 where the name is specified !
i have a datagridview that show an access database also there is toolstrip menu i defined the datasource and everything is fine except that when i run the application and edit anything and when i press the save button on the toolstrip an error appear and highlight this: Me.TableAdapterManager.UpdateAll(Me.My_phone_numbersDataSet)
and the error is: invalid operation exception was unhandled
I try to share my project to the other computer and i got this error:
Unhandled exception has occurred in your application, If you click
Continue. the application will ignore this eror and attempt to continue. If you click Quit, the application will close immediately.
The File "\FolderProjectBinDebugProjectDatabase.mdf" is on a network path that is not supported for data files.An attemp to attach an auto-named database for "\FolderProjectBinDebugProjectDatabase.mdf" failed.A database with the same name exists, or specified file cannot be opened, or it is located on UNC how to fix this error?
i am using visual studio 2005 and sql 2005 currently i am doing a system registration for staff using windows form,in the system new staff must register they detail, once user type his detail than this error is come out here i attach the picture and coding. I also highlight where is probleam come out for your info my database name is databse name is = login, table name is staff. using will put their detail in text such i write below after doing that i try to click button registe and suddenly this error come out.[code]
View 3 RepliesHaving created a database and testing it I get the following error message,
ARGUMENT EXCEPTION WAS UNHANDLED
Public Class Form1
Private Sub AddressBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AddressBindingNavigatorSaveItem.Click
[code]....
My action during the test was to fill in a field, save it then changed the information within, only to get the above message.
I have creating timekeeping application, I was used drag and drop for my datagridview. During build I can add, edit and delete records. But when I published and run there was an error saying (see below). [Code] When JIT debugging is enabled, any unhandled exception, will be sent to the JIT debugger registered on the computer, rather than be handled by this dialog box.
View 4 Replieswhat's wrong with this code? I keep getting error that says "An unhandled exception of type 'System.StackOverflowException' occurred in System.Windows.Forms.dll"
View 8 RepliesI am working on a vb windows form application with several connected forms. Its used to manipulate a MySQL database. One of the sub-forms has the following code snippet:
[Code]...
i have the following code but when i select button1 i get the following error: Null Reference Exception was unhandled-object reference not set to an instance of an object. - any idea's how to fix it ?i have underlined the line of code that is highlighted when the error occurs
Imports System.Data
Public Class Form1
Dim Ping As Net.NetworkInformation.Ping
[code].....
i am working in vb.net (vs 2005) i have designed my mdi form ribbon file (System.Windows.Forms.Ribbon.dll file ) its working fine but when i close my mdi form that time i got error error message Title "Windows32 Exception was unhandled" The system cannot find the file specified.
View 2 RepliesI have written an application but it didn't work here on my pc and unhandled expression occurred when I execute my program then this error is occurred.
"System.InvalidOperationException was unhandled
Message="An error occurred creating the form. See Exception.InnerException for details. The error is: Unable to cast object of type 'System.String' to type 'System.Byte[]'."
Source="E-Photographer"
[Code] ....
List View is already added for the purpose of thumbnails. I also need thumbnails when I click on root of the treeview and I also want to show image in the picture box when I click on node(photo). I need my code such as that it can display thumbnails on List View and pictures on Picture Box.
In the process of finnishing up the application. Some NOT all beta testers have had the same problem.
An error box that states: Unhandled exceptions has occurred in your application. If you click Continue, the application will ignor this error and attempt to continue. If you click Quit, the applicatiob will close immediatly.
An error occurred creating the form. See Exception.InnerException for detailes. The error is: Could not load file or assembly "Microsoft VisualBasic PowerPacks vs, Version = 9.0.0.0, Culture=neutral, PublicKeyToken=b03f50a3a' or one of its dependencies. The system cannot find the file specified.
The details displays this: See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
Exception Text
CODE:
JIT Debugging
To enable just-in-time (JIT) debugging, the .config file for this application or computer (machine.config) must have the jitDebugging value set in the system.windows.forms section. The application must also be compiled with debugging enabled.
For example:
CODE:
When JIT debugging is enabled, any unhandled exception will be sent to the JIT debugger registered on the computer rather than be handled by this dialog box.
This does not happen on all the forms within the app, just some. This happens on some systems running XP and the app runs fine on others running XP. So foar it has run on all systems running Vista. It happens some of the time on Windows 7
I am working on a multi-form code. For some reason, this randomly began happening just about the time I finished my code. The intial form loads just fine, but when I go to click on any of the selected buttons, the code crashes. and I get an unhandled exception of type 'System.stackoverflowexception' occured. Does anyone have any ideas? I have checked for any subs calling subs that call subs and I don't have anything of that nature. It is breaking at the point that is bolded and underlined.
Public Class Add_Description
Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
[code]....
I am getting the error "Format Exception was unhandled at "Do While objectReader.Peek <> -1" and after.'Date: Class 03/20/2010'Program Purpose: When code is executed data will be pulled from a text file'that contains the named storms to find the average number of storms during the time'period chosen by the user and to find the most active year. between the range of 'years 1990 and 2008 Option Strict On
Public Class frmHurricane
Private _intNumberOfHuricanes As Integer = 5
Public Shared _intSizeOfArray As Integer = 7
Public Shared _strHuricaneList(_intSizeOfArray) As String
[code]....
I am getting a Syntax Error in INSERT INTO Statement when trying to simply create and add a new row to the Customer table (tblCustomer). My code is as follows:[code]
View 3 RepliesAn error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
View 2 RepliesWhen i add an attachment to my email and click send i get an error.
Error : smtp exception was unhandled
Line : SmtpServer.Send(mail)
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
[code]....
Working with an If statement I have tried the following
If -0.6 > (LLum_Gline(8).X - LLum_Gline(12).X) > 0.6 Then
patient_frm.llum_gline = 2
MsgBox("Measurement is Abnormal")
End If
I am getting an error message that says Argument out of range exception unhandled. I have double checked and verified that LLum_Gline(8).X and LLum_Gline(12).X are in fact valid.Is my problem simply in how i am phrasing the If statement. Is there a way for me to phrase what im doing without writing multiple if statements?
have anyone experience this error? I try to share my project to the other computer and i got this error:
[Code]...