VS 2008 Making A Variable An Object?
May 5, 2011
excuse my coding and term limitations. I'm still learning and have only done what I'd consider basic things. I tried to search this solution for hours and but I'm coming up with nothing.
What I want to do is to reference different check boxes using one loop.
Like this..For xItemNo = 0 To 3
[Code]...
I get the error "Public member 'Checked' on type 'Boolean' not found." I get the fact I'm not able to simply make the text of the code into a variable I can easily insert into the code at will. At least not how I'm trying to do it.How can I dynamically change the check box name I'm referencing in the loop so I don't have to duplicate the code over and over for every check box name?
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Dec 10, 2009
I was wondering if there's a way I can make my objects return their own variable name as a string, something like this:
Public Class MyClass
Public ReadOnly Property VariableName() As String
Get
[Code]....
Is this possible? I'm fairly sure it should be possible through the System.Reflection namespace, but I can't figure it out.
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Mar 28, 2011
i have this error in the line of with xl.active......Object variable or With block variable not set.
Dim xl As Object
xl = CreateObject("Excel.Application")
With xl.ActiveSheet.QueryTables.Add(Connection:= _
"TEXT;C:Documents and SettingsUserDesktop429MEDICA2.TXT", _ Destination:=xl.Range("$A$1"))
[code]....
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May 31, 2012
Now I have the need to get a current value from a bindingsource in a property of a user control.In a previous thread I had tracked down the "Object variable or With block variable not set" to the return in the Get block of a property. At the time I was only using the Set so I just commented out the offending code until I needed it.
[Code]...
The error does not occur during a system compile, only upon saving the container object of the user control. As I said the Set works correctly, only the Get causes the error.I would like to know what I am missing/misunderstanding and am open to other suggestions of handling retrieving the current value of a bindingsource in a user control.
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Sep 26, 2011
i had a class called Tag with a structure like:
public class Tag
private _members
public properties
public shared database_methods
end class
this class was tailored for mysql database. i'm currently adding access 2007 support so i split tag into tag and tagdata with structures like:
[Code]...
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Apr 25, 2012
I'm having trouble tracking down what is wrong and causing the above error. This only occurs when saving the design view in VS 2012. The code builds and runs fine.Full error text:Code generation for property 'CompanyValue' failed. Error was: 'Property accessor 'CompanyValue' on object 'ContactViewUC1' threw the following exception: 'Object variable or With block variable not set."
CompanyValue definition in ContactViewUC:
Public Property CompanyValue
Get
[code].....
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Jul 24, 2008
Been getting this error with my program. Using framework 2.0
[Code]...
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Jan 21, 2010
I'm trying to enter automatically todays date in a number of records in the Table 'Applications' into the field 'Date_refund_request'.
However it is giving me the error 'object variable or withblock variable not set' in the line "Set rs = db.OpenRecordset(strSQL, dbOpenDynaset)".
The code is as follows:
Private Sub Command16_Click()
On Error GoTo Err_Command16_Click
Dim db As DAO.Database
[Code].....
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May 6, 2009
I am trying to use this block of code to save attachemnts from Outlook into a folder on my harddrive.
VB
Imports Microsoft.Office.Interop
''' <summary>
[code].....
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Jan 12, 2011
In the Session_Start of the Global.asax i have
Sub Session_Start(ByVal sender As Object, ByVal e As EventArgs)
Session("login") = False
[code]....
Why i am getting error the error Object reference not set to an instance of an object. at line
If Current.Session("login") Is Nothing Then
while checking for the login state as follows?
If GetLogin = False Then
'Do something
End if
I mean i have already created the instance on the Session_Start... Haven't i?
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Dec 8, 2011
I'm writing in ASP.NET 4 / VB.NET. I am querying an MSSQL database and sometimes have records come back with no results...so I enclosed the call I was making upon the results in an If..Else clause to set a default value if the database comes back with no results...but now I am getting this "Object variable or With block variable not set error". Here is the relevant code:
Dim clcfirst
Dim rhcfirst
Dim clcdate As Date
Code].....
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Aug 21, 2010
I am populating combo box from database. In debug i can see that the combo box has been populated . here is the code
[Code]...
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Aug 11, 2009
dim myCollection as new Specialized.StringCollection
dim myFoundThings as new ArrayList
dim index as Integer
dim newResultMemberName as String
[code]....
This is part of some code that will run without user interaction once it's spinning away, and I need to create a unique object from some items found in a StringCollection, naming the objects using information found in the strings stored in that StringCollection.
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Jun 7, 2009
Okay this one might be a little tougher. I'm using VB that looks like this:
string = Replace(string.ToLower, chr(63), "A")
But I also want chr(63) = "B" as well, like this:
string = Replace(string.ToLower, chr(63), "B")
My problem is that when chr(63) is at the end of a string I need it to be B, and when it's not the end I need it to be A. I suppose that I can use an if/then/else statement. Is there a way to do this?
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Jun 22, 2010
I haven't quote grasped this whole "class" concept yet, but I'm working on it. When following the instructions below, the "test" portion of this code: "test.variable". It has an underlined error that says that "test" is not declared. If I remove the "test" word then the ".variable" shows not declared. I'm using Visual Studios 8 if that makes any difference. I have a pre-existing variable in a project that I would like to monitor for changes.
Re: Detect variable change.
Make your variable a class with an event.
Make your class:
VB.NET Syntax (Toggle Plain Text)
Public Class myVar
Private mValue As Integer
Public Event VariableChanged(ByVal mvalue As Integer)
[Code] .....
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Aug 3, 2010
How do I optimize my code making it DRY approach. I want to make my variable to be on public/general so i can re-use it
Public Class BasicForm
Dim Product1, Product2, Product3, As Integer
Dim firstName, lastName As String
[code]....
I want to move the variables (product1,product2) to somewhere else that I can set it one time and easily access it with other control. What I did before is I alway set the variables to every control.
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Nov 3, 2009
I'm trying to make a calculator application. Just as practice, as I'm new to visual basic (.NET 4.0) coding. I've got this so far.
[code]...
Note, I've not programmed it to do operations yet, I'm trying to get this sorted out first. My issue is, when I enter my numbers, they do not store as a variable, they both store as zero.
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Feb 9, 2011
The code below works for the class that I hard coded "XCCustomers" in my RetrieveIDandName method where I use CType. However, I would like to be able to pass in various classes and property names to get the integer and string LIST returned. For example, in my code below, I would like to also pass in "XCEmployees" to my RetrieveIDandName method. I feel so close... I was hoping someone knew how to use CType where I can pass in the class name as a string variable.
Note, all the other examples I have seen and tried fail because we are using Option Strict On which disallows late binding. That is why I need to use CType.I also studied the "Activator.CreateInstance" code examples to try to get the class reference instance by string name but I was unable to get CType to work with that.When I use obj.GetType.Name or obj.GetType.FullName in place of the "XCCustomers" in CType(obj, XCCustomers)(i)I get the error "Type 'obj.GetType.Name' is not defined" or "Type 'obj.GetType.FullName' is not defined"
'+++++++++++++++++++++++++++++++
Imports DataLaasXC.Business
Imports DataLaasXC.Utilities
[code]....
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Feb 9, 2011
I am trying to figure out why all of the sudden i get an error when trying to run my program. [code]The error i get is highlighted on the frmPM:..An error occurred creating the form. See Exception.InnerException for details.The error is: Object variable or With block variable not set.I've made sure there was a End Class at the end of all that but that doesn't seem to be the problem.What else could cause this as it worked just fine for one run then not on down the road?
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May 10, 2012
I need your help to validate what is causing this error.This is the Stack Trace:
[NullReferenceException: Object variable or With block variable not set.]
Microsoft.VisualBasic.CompilerServices.Container..ctor(Object Instance) +498372
Microsoft.VisualBasic.CompilerServices.NewLateBinding.LateCall(Object Instance, Type Type, String MemberName, Object[] Arguments, String[] ArgumentNames, Type[] TypeArguments, Boolean[] CopyBack, Boolean IgnoreReturn) +112
[code]....
As you can see the error is returned on line 292 Uno_a_Uno function. I've searched but I can not resolve it is causing.
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Mar 5, 2011
Is it possible to do something like this:
Dim ThisThing as ThisThingToolStripMenuItem.Text
So i can later in the code just do ThisThing = "whatever" ?
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Nov 15, 2010
I am thinking is to have a question, then between 2-4 answers, and depending on the answer a point value gets assigned to a variable, but then when that one question is answered you can click a button that moves to a next page type of thing with a new question on it. I think I could probably figure most of this out but when it comes to switching to a different question I am not sure how I would do that.
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Feb 7, 2010
Every time that I want to make a thread in the ThreadPool I make a stupid little function like Worker_O below.[code]...
Is there a way in VB .net to cast from Sub(i as integer) to Sub(o as object) without making Worker_O? Worker_O is ugly to me.
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Mar 24, 2011
Just because (in my code) some times looks the sqlDataReader to be open and tells me that "there is already an open data reader".I decide to put this line: If Not SqlReader.IsClosed Then SqlReader.Close()[code]But now, when it comes to execute the instruction.If Not SqlReader.IsClosed Then SqlReader. Close()It gives the error:Object Variable Not Set To An Instance Of An Object.
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Dec 21, 2011
I am trying to make a customer class that will simply make a bunch of controls (hotspots) Visible value = False.
For instance: WinStartSpot.visible = False
Thing is I have roughly 60 "spots" that need to be turned on and off as the user clicks through the program (its a very simple OS simulator) I tried to make a class using boolean return but that failed miserably. how to code a class like that?
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Jun 20, 2008
Ok well just started to learn Vb 2008 and im trying to make an image move using the arrow keys..im trying to make a little game just for practicing and im having trouble getting my sprite to move.
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Mar 25, 2010
I am getting the error:"Range variable 'sender' hides a variable in an enclosing block or a range variable previously defined in the query expression."for this
Imports System.Data.SqlClient
Imports System.Linq
Public Class Form1
[code]....
I can select any other item from the table without the error. "sender" has the same properties as "receiver" in the SQL table.
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Apr 14, 2010
I have this function:
Public Sub DoStuff(ByVal type as System.Type, ByVal value as Object)
End Sub
The 'value' argument is always an array of the same type as 'type'. How can I loop through the values of the array?
I'd like to be able to do something like this:
DoStuff(GetType(Integer), New Integer(){1,2,3})
Public Sub DoStuff(ByVal type as System.Type, ByVal value as Object)
//Strongly types arr as Integer()
[Code].....
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Apr 12, 2009
I was wondering if there is a way of making a picture have the properties of a checkbox. I want to have clickable stars that change color (from white to yellow) everytime the user clicks on them to represent the rating they put on certain foods.
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Feb 9, 2011
Here's the code that is causing my problem, I have no idea why though. All necessary services have been imported.
'Creates Prompt File
Sub CreateFile()
Dim createstring As String = ""
[Code].....
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