Copy A Form Object To A Variable?
Jan 8, 2009
Is there any method or a way to copy a form object to a variable? Let me explain this - We have a method called "Copy" for the Dataset class & you all must be knowing that there is a difference between the below two lines of code: DsTemp = Ds DsTemp = Ds.Copy()
In the first line of code, any changes made to Ds will reflect in DsTemp. However, in the second line of code, any changes made to Ds will not reflect in DsTemp because we are only "copying" the contents & schema of Ds. Likewise is there a method or a work around to "copy" a Form object?
[Code]...
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Feb 15, 2010
Writing an asp.net mvc app and i have something like this...
Public Class AA
'... has some variables...
End Class
Public Class BB
[code]....
So, now in my program, i just want to copy object of type AA to an empty variable of type BB?it makes sense to do this, as i expect all the fields in AA type object to be copied to the newly created BB type object, and the ExtraVariable in the BB type object i would (will) just assign a value to it later (after the copy) on my own time!!I know copying BB type to AA type would not be appropriate as there would be lost data!But im trying to copy AA to BB, I've used both DirectCast and CType to do this, and i keep getting "unable to cast" error!
Note: I'm using vb.net (but can read c#, no problems)
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Jun 12, 2009
I have a string value of form names in my DB so when my condition passes, the variable string will take over the value , then that value will call the form(variable) as string.
[code]...
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Feb 1, 2012
In VB.net, when I retrieve a value from a list do I get a copy of that value or a reference to it?
dim blah as someObject
dim listOfBlahs as list(of someObject)
listOfBlah.add(new someObject(1))
[Code]....
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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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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 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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Aug 10, 2009
I've started a simple project to copy a folder from one place to another, so far I have; one folderbrowserdialog to select the source folder, and another folderbrwoserdialog to select the destination folder, I have no idea on the code to copy from one variable location to another.
"Private Sub BrowseFoldersButton_Click2(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BrowseSourceButton.Click
Dim theFolderBrowser As New FolderBrowserDialog
theFolderBrowser.Description = "Please Select The Folder Which You Would Like Backed Up."
theFolderBrowser.ShowNewFolderButton = True
[Code] .....
Would it simply be something like:
"Shell (CMD xcopy "Me.FolderChoiceTextBoxSource.Text" "Me.FolderChoiceTextBoxDestination.Text" /s)
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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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Feb 4, 2011
.net 3.5, VS 2010... this is for an asp.net website.I have an class called Agency. there is a second class called Agency_Queries. Agency_Queries inhertis the Agency class. I'm trying to create a function that will copy the like properties in Agency to Agency_Queries. I figured out how to do that.. but when i try to make it more generic so that i can pass in my class name and lists i'm doing something wrong.So if there is an list(of Agency) that needs to be copied to list(of Agency_Queries) i've got something like the following.
Dim AgencyS As List(Of Agency) = Nothing
Dim Oc As New Agency_Controller
AgencyS = Oc.GetAgencyData(0)
[code]....
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May 23, 2010
I have an class called Agency. there is a second class called Agency_Queries.Agency_Queries inhertis the Agency class. I'm trying to create a function that will copy the like properties in Agency to Agency_Queries. I figured out how to do that.. but when i try to make it more generic so that i can pass in my class name and lists i'm doing something wrong.
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Jul 10, 2004
How can I copy an object? When I use obj1 = oby2 I copy only the pointer. I know some objects have the methode .clone. But What's about the other ones? Some objects (for example a button) I can copy of course by creating a new object and set each property. (btn1.Left = btn2.Left) But that works rarly. And of course what's about my own classes? Is there now change to copy them like you can do it for example in C++...?
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Sep 5, 2010
Using Visual Basic 2008 Express. I need to pass a variable to another form. Or else make the variable visible to both forms.
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May 9, 2010
I am a .net beginner trying to make a crossover from vb6. I am trying to copy bytes of integer to a variable but I am getting this error msg. PInvokeStackImbalance was detected
A call to PInvoke function 'Tutorial_Class Dog!WindowsApplication1.ModAPIFunc::CopyMemory' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.
Module ModAPIFunc
Public Declare Sub CopyMemory Lib "kernel32" Alias _
"RtlMoveMemory" (ByVal Destination As Long, ByVal _
Source As Byte, ByVal Length As Integer)
[CODE]..........................
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Jul 29, 2010
I am building an ASP.NET application that needs dynamic tables. That's another issue that I've already posted about (and gotten a pretty good response!). Now, I'm running into another issue - I want to add new rows to my table, but given that I will have 10-12 tables on one page, each containing different objects in their rows (text boxes, check boxes, etc.) I need a way of simply generically adding a new row that has the same objects as the first row in the table. Here's my code:
Private Sub AddTableRow(ByRef originalTable As System.Web.UI.WebControls.Table)
Dim originalRow As System.Web.UI.WebControls.TableRow = originalTable.Rows(1)
Dim insertingRow As New System.Web.UI.WebControls.TableRow[code]......
Stepping through with a debugger, I see that this strategy is working - but the additional table row still doesn't appear...and still does when I do this statically.
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Feb 27, 2009
I am trying to copy the contents of one graphics object to another, but the only was I have been able to find is based on using GDI32.DLL, which i would rather avoid using if possible.Does anyone know how/if this is possible using managed code? I don't mind if answers are in C# or VB.Net.
[Code]...
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May 19, 2009
Ive got a few strings stored inside a string array, and i need to copy each string element into the integer variable on each iteration.how i would convert it? tried
CInt(stringArr(lc))
but got errors?
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Jan 31, 2012
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
conn.Open()
cmd.Connection = conn
cmd.CommandText = "Select RoomName from Room_Details"
[code]....
I try this code but it throws the following error:
Object variable or with block variable not set
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