Forms :: Button Object From Variable, Buttonx?
Feb 24, 2010
Ok, new to vb.net and I want to create a basic app that reads the contents of an xml file (this part works) and then enable (make visible) the required number of buttons (already created on the form but set as not visible by default) for each line of the xml file. The xml file just lists a program name (which would become the button text) and the path to the file (which should be stored as a variable that is used in the button code (handle?)The idea is that I have an app that once created, I just update the xml file with new drivers or programs that I want to install or run without having to rebuild the application.
Imports System.IO
Imports System.Xml
Imports System
[code].....
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May 15, 2009
I am having 3 radio buttons and a button The codes should be added to the button_click event, when ever the radio button is selected and the button is click then, The codes should determine which button is selected and assign it to a variable. Create a two parallel 1-dim arrays and populate it with the data below:
[Code]...
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Apr 28, 2009
I have a panel with some controls in it (several textboxes, a slider, 2 buttons, and a small groupbox).. When I click a button, I want all of the textboxes within the panel to be readonly... So I have this code: [code] When I run it though, I get the following error:Unable to cast object of type 'System.Windows.Forms.Button' to type 'System.Windows.Forms.TextBox'.If I remove a button, it moves on to give me the same error but for a label..
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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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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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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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Jun 7, 2012
I know how to handle a single objects property changed event very easily. I want to handle a objects property changed event that is part of another object.
Given Object:
[ObjectY = Y]
+ Public WithEvents X As ObjectX
I would like to do something like:
Private Sub XPropertyChanged() Handles Y.X.PropertyChanged
Right now I need to create a object that equals the object inside that object and then handle this variable pointers property changed, but that is just annoying.
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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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Feb 17, 2011
I have a VBA form in Microstation I am using to try and help automate a task. The only problem I am having is I am reading a textbox (Filebox.Text) and setting it as the variable (FN). It works, because I used Msg.Box (FN) to test it. However, in two of the lines of code, I am trying to use (FN) to pass the typed in filename to the command to run in Microstation. Unfortunently, it gets passed on as (FN).dgn instead of the actual filenale typed into the textbox. Is there a way I can make the variable actually seen as a variable? Code on Pastebin: url....Also, not sure if this is the right section, 100% new to VBA, coming from a world Bashed together.
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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 22, 2010
This is my first Windows app to create since VB6. I've been in the world of ASP and ASP.NET for many years. However, now I have been asked to create a simple app that needs to be windows based.
[Code]...
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Aug 20, 2011
how do i insert text for the designated object when the help button (next to the 'close' button) is pressed?
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Aug 24, 2009
Our customers get an unahndled exception as stated above. Can you tell me how to trap the error on customer applicaiton? Customer does not know when the error comes so i want to know what causes the error.
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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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Jan 1, 2010
What control should i use if i want a button with default text on it and when i press on it, it give a drop down menu that i can select different commands. I tried a combobox which seems to be very close to what i want. i set the dropdownstyle to dropdownlist so it looks like a button. but i cant seem to set a default text on the box and i dont want this text to be in the item list. also when i set the dropdownwidth to a value larger than the combobox width, it will align left.
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Aug 12, 2011
Let's say I have a WPF application with 50 textboxes that I want to put in a List(Of TextBox).I could do this:
Dim tbx As New List(Of TextBox)
tbx.Add(TextBox1)
tbx.Add(TextBox2)
[code]......
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Feb 10, 2011
Assume I have a variable, which is a List(Of T), with 100 elements that are instances of a class....
If I set this variable to a new List(Of T) with another 100 instances, the old ones totally disappear, right? They...die. Absolutely thing of the past, right?
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Jan 1, 2010
I have the following VB6 code:
Public Function GetSetting(ByVal key As String) As String
'xml document object
Dim xd As New DOMDocument
'load the xml file
xd.Load (strSourceFile)
[Code] .....
I have read several places that indicate this should work, but it doesn't. The selectSingleNode blows up with "Error: Object variable or With Block variable not set."
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