Error: NullReferenceException:{"Object Reference Not Set To An Instance Of An Object"
Sep 7, 2009i have this error but i don't one why it appear.. Error: NullReferenceException:{"Object reference not set to an instance of an object."}
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Error System.NullReferenceException Occurred - Object Reference Not Set To An Instance Of An Object
Jan 12, 2010i am using VB.net 2003 and i am trying to get the number of rows of a dataset from form1 into form2 in order to use it for something else and i am getting the error"System.NullReferenceException occured...Additional information: object reference not set to an instance of an object"...my code is like this:in form1:Public x as integer= me.dataset.table.rows.count here it gives me the error
in form2:
dim frm as new form1
msgbox(frm.x)
VS 2008 Error - System.NullReferenceException: Object Reference Not Sent To An Instance Of An Object
Oct 23, 2009I have recently gotten my hands on a free, open-source IMAP connection API.So far, I have been successful in creating a connection to one of my accounts.Where I'm getting stuck is retrieving folders and/or emails from those folders.Does there happen to be anyone here that is familiar with this API, or even Gmail (particularly the folder structure for IMAP)?
If not, here is a link to the DLL that is listed on sourceforge and the company's website that created it (if you feel like testing):
Koolwired
Sourceforge - Koolwired API
I have created a test account so feel free to use the code below without worrying about username/password issues; I'll just delete it when I'm done with it.Here is the code I have made so far for making a connection:
Dim gSession As New Koolwired.Imap.ImapConnect("imap.gmail.com", 993, True)
Dim gAuthenticate As New Koolwired.Imap.ImapAuthenticate(gSession, "imap_test@serysoft.com", "imap_test")
Try
[code]....
When I run that code, I get an error that states:System.NullReferenceException: Object reference not sent to an instance of an object. (The bold line in the above code).
Now, I'm not sure exactly what that means. Does that mean it tried to access the server and "INBOX" doesn't exist so it gets returned a NULL value? Or is it possibly the coding itself?Maybe the Gmail folder system is weird due to the fact they use labels (even though from what I have read online, the labels act as the folders in the IMAP system).
Fill_Text Code Throws An Error : System.NullReferenceException:Object Reference Not Set To An Instance Of An Object
Apr 18, 2010I got the following code from the demo code samples and just changed the textbox names. But it throws an error:
Private Sub Fill_TextBox()
Dim Num As Integer
Dim DSet As DataSet
[code]....
The error is:
System.NullReferenceException:Object reference not set to an instance of an object.
.net - Getting An ASP.NET Error System.NullReferenceException: Object Reference Not Set To An Instance Of An Object?
Oct 30, 2011I am completely new to ASP.NET and VB as well as C#. I am trying to add customers to a contact list out of a DB. Then the list can be referenced to call them up. But when I try to run it I get System.NullReferenceException: Object reference not set to an instance of an object. In line 19.
Here is my code:Page 1 is default page...it connects to the database and grabs the contact information and allows me to select the current contact and add them to a listbox on a separate page:
Imports System.Data
Partial Class _Default
Inherits System.Web.UI.Page
[code]....
The error occurs on line 19 (For Each customerEntry As DictionaryEntry In Customer) in the second set of code from the default2 class.
Error - NullReferenceException Was Unhandled - Object Reference Not Set To An Instance Of An Object
Apr 15, 2009I'm finishing up working on the high score list of my Jeopardy game. The only problem that I'm running into is when I try to start from scratch without a textfile in the Debug folder.I get a NullReferenceException was unhandled - Object reference not set to an instance of an object. I get this message with the line If (myPlayers.Length - 1) > 2 Then just before I start to compare the scores and reorder the list by score if necessary.I already declared myPlayers as an array of structures in the beginning of the form.
Private myPlayers() As Players
It writes the name and score to the file, but then gives me that error. My goal is to only fill the file with the three players names and their scores.I figured since the file doesn't exist, I'm doing something in that specific code that effects my reference to myPlayers but I can't figure out what exactly. I tried adding
If (myPlayers.Length - 1) > 2 AND File.Exists("highScore.txt") Then
but its still giving me the error.
'read in scores, add scores to file or create new file if neccessary
If File.Exists("highScore.txt") Then
Dim InputFile As StreamReader
[code]....
Error: System.NullReferenceException: Object Reference Not Set To An Instance Of An Object
Aug 12, 2011I am coding in vb.net. At times the data is empty/null this is due to user's input into the db.i will like to bypass it, however i get no luck.here is snippet of my code:
If hct.mydbvalue.name IsNot Nothing Then
dr("mydbvalue") = hct.mydbvalue.name
End If
I still get an error: System.NullReferenceException: Object reference not set to an instance of an object.is there a way if it is a null value to not do anything?
Login Error: Object Reference Not Set To An Instance Of An Object (NullReferenceException)
Jul 9, 2009I'm currently building this website which consist of a few webpages.
1.) Login Page
2.) Menu Page
3.) Add Application Page
4.) Search Application Page
My login is working fine, but occasionally when I start to run and debug the prog, it will stop running and point to this error. This is my login page
Partial Class Admin
Inherits System.Web.UI.MasterPage
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim ans As String = Session("Status").ToString()
[code]....
.net - Process.start System.nullreferenceexception: Object Reference Not Set To An Instance Of An Object
Oct 16, 2011I am trying to start the process with the following parameters When I try to start it though I get an System.nullreferenceexception: Object reference not set to an instance of an object
Dim exepath As String = Application.StartupPath + "inffmpeg.exe"
Dim sr As StreamReader
Dim cmd As String = " -i """ + input + """ -ar 22050 -y """ + output + """"
Dim ffmpegOutput As String
[code]....
Error "NullReferenceException"- Object Reference Not Set To An Instance Of An Object
Jun 22, 2010I'm having problems with Datagridview Column I have a dataset containing a table called Inventory, which i databound to my datagridview.At my form load event, i set one column's backcolor to blue like this-
dgvBrowseBooks.Columns("Title").DefaultCellStyle.BackColor = Color.
But when i run the program, i get this error "NullReferenceException"- Object reference not set to an instance of an object.
VS 2008 System.NullReferenceException: Object Reference Not Set To An Instance Of An Object?
Apr 26, 2011look after the error i'm having.
module1.vb
Imports System.Data.SqlClient
Module dbconn
[code]....
Asp.net - System.NullReferenceException: Object Reference Not Set To An Instance Of An Object
Jan 2, 2010I have a custom class that all my pages inherit from
Public Class Page : Inherits Page
Private Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
'Display Admin Controls (Buttons) '
If User.Identity.IsAuthenticated Then
[code]....
But for some reason I'm getting this error:
System.NullReferenceException: Object reference not set to an instance of an object.
on this line
If User.Identity.IsAuthenticated Then
This only started happening in IIS7. I have been using this application in IIS6 for over a year without issue, and it's only since I migrated to IIS7 yesterday that this exception started.
IDE :: System.NullReferenceException: Object Reference Not Set To An Instance Of An Object
Dec 4, 2009i wrote a very simple app and it runs fine on windows xp machines, but on windows 2000 machines... i am getting the following error.. ... nothing showing up in build nor does it happen on xp machines?
************** Exception Text **************System.NullReferenceException: Object reference not set to an instance of an object. at System.Windows.Forms.Control.WaitForWaitHandle(WaitHandle waitHandle) at System.Windows.Forms.Control.MarshaledInvoke(Control caller, Delegate method, Object[] args, Boolean synchronous) at System.Windows.Forms.Control.Invoke(Delegate method, Object[] args) at System.Windows.Forms.Control.Invoke(Delegate method) at
[code]....
When JIT debugging is enabled, any unhandled exceptionwill be sent to the JIT debugger registered on the computerrather than be handled by this dialog box.
IDE :: System.NullReferenceException: Object Reference Not Set To An Instance Of An Object?
Mar 9, 2009I am soooo very new to vb express. i wrote a very simple app and it runs fine on windows xp machines, but on windows 2000 machines. i am getting the following error. nothing showing up in build nor does it happen on xp machines??i have no idea how to fix it!
[Code]...
NullReferenceException Was Unhandled - Object Reference Not Set To An Instance Of An Object
Jan 4, 2011so I was working on a autoviewer for the site enhanceveiws.net. I have a SmartError Filter in the code. However I got an error. NullReferenceException was unhandled. Object reference not set to an instance of an object. Here is the code.
[Code]....
System.NullReferenceException: Object Reference Not Set To An Instance Of An Object?
Dec 4, 2009i'm getting this error whenever i run this page.
My codes: Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim con As String = "Database=barcouncil;Data Source=dev;UserId=root;password=;"
Dim cn As New MySqlConnection
Dim da As New MySqlDataAdapter
[Code]...
An Error Occurred Creating The Form. See Exception.InnerException For Details. The Error Is: Object Reference Not Set To An Instance Of An Object?
Apr 30, 2009WTF, here's my code...
Public Class Form1
Dim BIT01 As Integer = BIT_01.Text
Dim Value As Integer = TB_OutPut.Text
[code].....
Error: System.NullReference Exception: Object Reference Not Set To An Instance Of An Object
Jan 5, 2010I am getting this error when I try to print my report. Here is my print code.
Private Sub PrintToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PrintToolStripMenuItem.Click
Dim Print_Dialog As New PrintDialog
[code].....
Here is my error: System.NullReference Exception: Object reference not set to an instance of an object.
Line Of Code Is Generating This Error - Object Reference Not Set To An Instance Of An Object?
Aug 14, 2010with datagridview1
while looping through all the cells
i am trying to allot a cell value to another cell value basing on some conditions
& finally delete one column.my code is as fallows
Dim i, x As Integer
i = 0
x = Me.DataGridView1.Rows.Count[code]....
error i am getting is : Object reference not set to an instance of an object.it is extremely surprising for me the same code has worked nice for me but why & how the same line of code is generating this error.
VS 2008 - Error With Arraylist In My.Settings - Object Reference Not Set To An Instance Of An Object
Mar 14, 2010The issue is when I try to add a new item to the ArrayList with the following code, it gives me an error:
vb Private Sub btnLabelAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLabelAdd.Click
Dim result As String = InputBox("New Filter Label:", "Label List")
[CODE]................
Object reference not set to an instance of an object.
I'm not really sure what I'm supposed to be doing with this. It's a new setting I just added and it's empty, so I'm not sure if that has anything to do with it or not. Anyone know what's going on and what needs to be done to get it to accept a value and not want to be "initialized"?
Event Handler Code Cause A Object Reference Not Set To An Instance Of An Object. Error (only Present On Live Server, Ok On Dev)?
Mar 4, 2010Here is the code for the button click event;
Protected Sub CompetenciesButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles CompetenciesButton.Click
Dim con As String = WebConfigurationManager.ConnectionStrings("foo").ToString()
[code].....
Application - Getting An Error Stating Object Reference Not Set To An Instance Of An Object
May 2, 2010I am making an application that takes information from the textboxes and saves it to a sequential access file or text file named checkfile.txt. I have the textfile in the proper location within the project folder.
I am getting an error stating Object reference not set to an instance of an object.
And this part of the code is highlighted
CODE:
Here's the code:
CODE:
Attached image(s)
Asp.net - Nested Repeater Error: Object Reference Not Set To An Instance Of An Object?
Jul 28, 2011I am taking some code that I have used for a nested listview before and trying to make it work with a nested Repeater but I am getting an error.
System.NullReferenceException: Object reference not set to an instance of an object.
.aspx
<asp:Repeater ID="reMainNav" runat="server">
<HeaderTemplate><ul></HeaderTemplate>[code].....
Error - Creating The Form - Object Reference Not Set To An Instance Of An Object
Apr 13, 2012I'm having this problem with my code and cannot seem to get past it although it was working fine before. The error is "An error occurred creating the form. See Exception.InnerException for details. The error is: Object reference not set to an instance of an object." The code is:
CODE:
I am trying to get information to be pulled out of a database and show in text boxes on another form (frmviewsdets). The error occurs when it gets to the line frmviewsdets.txtsnumber.Text = rdr("StudentNumber") and even when a breakpoint is applied there it just moves on to the next and so on.
I have tried to show frmviewsdets before I pull the data out of the database beut I get the same message.
Get The Error 'NullReference Exception' - Object Reference Not Set To An Instance Of An Object?
Feb 7, 2011When the following executes, I get the error 'NullReference Exception' - Object reference not set to an instance of an object. TestClass has Get and Set methods for the integer property TestWord.How should the following be changed to let me set TestWord in six elements of TArr?
Dim TArr(5) As TestClass
For i As Integer = 0 To 5
TArr(i).TestWord = i * 10
Next
Nested Tabcontrol - Error - Object Reference Not Set To An Instance Of An Object
Apr 7, 2011I am using VS2008 and vb.net.I have a nested tabcontrol.
tabControl 1 and tabControl3
In tabControl3 I am trying to populate a text control with a value from a control placed on tabControl1.
' add a savings tabpage
Dim strSavingsPage As String
Dim dblTaxRate As Double
[code]....
The complete error is: NullReference exception was unhandled Object reference not set to an instance of an object.
Visual Basic Error Object Reference Not Set To An Instance Of An Object?
Sep 25, 2011I have this visual basic error and i was wondering if anyone could help.Private Sub SearchToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SearchToolStripMenuItem.Click
[Code]...
VS 2008 FindControl - Error : Object Reference Not Set To An Instance Of An Object
Sep 15, 2010What is the problem in below code.
d Public Sub filltextbox(ByVal dlist As String) Dim tb As TextBox = CType(Page.FindControl(dlist), TextBox) tb.Text = "hello" End Sub
Error : Object reference not set to an instance of an object.
Asp.net - Error Occurs : Object Reference Not Set To An Instance Of An Object?
Dec 17, 2010Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
[code]...
The following error occurs : Object reference not set to an instance of an object.
Asp.net - GridView Error: Object Reference Not Set To An Instance Of An Object
Jun 7, 2012have a gridview with template fields, one column contains a dropdownlist that should be populated with a sql statement. I have created the grid dynamically and called the rowdatabound in order to access the dropdownlist but I keep recieving the error: Object reference not set to an instance of an object.
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
<Columns>
<asp:CommandField EditText="Add" ShowEditButton="True" />
[Code]....
