I want to add a reference for System.Web.dll
But thats targeted only on 3.5 right? so what is the equilivent when using vs2010 as thats defaulted to 4.0???
If Not String.IsNullOrEmpty(txtAttached.Text) Then
Dim tAttach As MailAttachment = New MailAttachment(txtAttachment.text)
NewEmail.Attachments.Add(tAttach)
End If
I'm upgrading my site and pasted some code into a new form in VS 2011 Express beta. I get the standard error below: Namespace or type specified in the Imports 'System.DirectoryServices' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases.
I went ahead and added a reference for system.directoryservices. Still, the errors remain. I go back to references to make sure it's been added, and it is no longer checked. Repeated tries and the same results.
In my project i had an added reference which has always worked,, today and out of the blue i start getting this error
View 1 RepliesI have a Windows Forms application built in VS2005 and migrated to VS2008. I copied this application from one development computer to another, and now it states <the system cannot find the reference specified> for every single reference. These references are basic things like System, System.Data, System.Windows.Forms, etc. I cannot even look at the forms since it cannot find the reference to the DLL.
The computer the application was copied to has VS2008 installed and I can find the references in the appropriate location of (C:WindowsMicrosoft.NETFrameworkv2.0.50727) and also in the GAC (C:Windowsassembly)
However, even if I try to remove the references and add them back in again it still says it cannot find the specified references.
How do I add an explicit reference to system.drawing in visual basic 2010 express console application?
View 1 RepliesSystem.ServiceModel.Web can be seen from Silverlight projects, however I cannot add a reference to it from a console app, because the assembly is not displayed. It contains the JSON Deserialier which I need. How can I add the assembly so that Console Apps can add a reference to it?
View 2 RepliesI want to add reference system.net.mail but I am not finding it my reference liberary. How can I Import that reference.
View 6 Repliesin the ReadFile() Sub, if the user tries to read a file that is not there he gets an exception
which results in the 2nd line in the Catch being executed. So far so good. But the 2nd line of
code in the mnuOpen_Click then gets a System.NullReferenceException which I don't understand since
the mnuOpen_Click code all works fine when called from the Open menu item. The exception
information suggests I use the "new" keyword to create an object instance, but in all my reading
and all the different ways I've applied the keyword New to the code, I've not been able to figure
out how to do this.[code...]
I've created a class library in Visual Studio 2008, and when I try to add the dll as a reference, I get the message in the title for the Path field in my project references. I've been going for a week trying to figure out this issue, and I haven't been able to come up with anything. The strange thing is I can add the same reference to a Visual Studio 2010 project, and it works perfectly fine.I used VS 2008 to build it because the dll isn't used in house and needs to be compatible with .Net 3.5.
View 1 RepliesI have added a reference to the System.Data.SqlClient, but i am not able to use its components while coding, But when i import it in the form class i able to use the component.
So,Is importing a namespace and adding a reference two different things?
I must be missing something very obvious...Using Visual Studio 2005 to write a vb app for Windows CE. I'm trying to use the NetworkInformation namespace of System. I can see it in my object browser, but when I try to use it in my form, it doesn't come up in the autocomplete and the compiler complains that "NetworkInformation is not a member of Net".
View 1 RepliesI installed .net 2010 ultimate but my proble is i cannot find a reference to System.Data.OracleClient.
View 1 RepliesI am planning to use a List in my application but when I was searching for System.Collections.Generic, it only has System.Collections. I tried to look it up in the "add reference" and its not there.
View 2 RepliesI have the following code under a button labeled "Exit" for exiting my application. Code:Application.Exit()It has been working fine. I added a reference to System.Deployment and the compiler suddenly doesn't like Application.Exit(). Can I not use Application.Exit() and have a ref to System.Deployment at the same time? Upate: I got it. I used the Object Browser and found "System.Windows.Forms.Application.Exit" which works with System.Deployment referenced
View 2 Replies#1 is C# Class Library, where I have my EF model defined (3.5 sp1) and some public methods.#2 is a VB winforms app.In the winforms app, I have referenced the C# library and added the connection string for the EF model. The problem I am having is that I have a form where the user selected a .txt file to import. On the VB side, I create a byte() from the file, then pass it to a public method cleverly called Process. In Process(), everything runs smoothly until I instantiate the EF model.
using (WorkersCompImportEntities context = new WorkersCompImportEntities()) { ....
Where I receive this error:
Could not load file or assembly 'System.Drawing, Version=1.0.3300.0,
[code]....
I have the following code on the code behind file for a .aspx page in a project:
Dim searcher As New ManagementObjectSearcher("SELECT RemoteName FROM win32_NetworkConnection WHERE LocalName = '" & sFilePath.Substring(0, 2) & "'")
For Each managementObject As ManagementObject In searcher.[Get]()
[code]....
In Visual Studio 10 - Visual Basic, why can't I import "System.Drawing" when my only reference is "System"? I can import "System.Runtime.InteropServices".To reproduce my problem:
1. Create a New Project in Visual Studio 10 with Visual Basic Class Library template.
2. Add "Imports System.Drawing" and "Imports System.Runtime.InteropServices" at the beginning.
3. Remove all references except "System" in the References pane of the project properties.
Result:Visual Studio cannot find "System.Drawing" but it can find "System.Runtime.InteropServices". "System.Drawing" is fully qualified so the system should be able to find it inside the referenced "System".
Thoughts:It appears "System" and "System.Drawing" are distinct namespaces (or containers?) so why doesn't qualification "." work? Does "." represent something else? "System" is also in "mscorlib" but is that the namespace which is used or is it another?"Microsoft.VisualBasic" is also listed in the imported namespaces but there is not a reference to it. How was it found? Where is the "Imported namespaces" list populated from?I have been looking through it for a while but cannot understand why "System.Drawing" is not imported.
Receive 'ConfigurationManager' is not a member of 'Configuration' in VS2008.I read all of the topics in the forum about this error Tried adding areference to System.Configuration.dll to the project and an "Imports System.Configuration" to the vb file.Still get an error
View 7 RepliesI 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]....
i 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)
I 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.
I 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).
I 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.
I 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.
I 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?
Currently working on the status bar for application. I would like the status bar to display message errors if a user makes an invalid entry. I have a module which contains the main procedure and procedures to change the text property of my status bar. A Call is made to the procedures from one of the forms that requires the user input. The application compliles but I get an unhandled exception of type 'System.Null ReferenceException' Object reference not set to an instance of an object. [Code]
View 4 Replieslook after the error i'm having.
module1.vb
Imports System.Data.SqlClient
Module dbconn
[code]....
I 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.
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?
************** 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.
I 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]...