Late Binding To Excel Causes Exception From HRESULT
Aug 17, 2010
I have a VB.NET application which opens Excel and writes data to it. The program works fine in debugging and publishes without problems. The problem I am having is that on some machines the finished program is throwing up the following error: Exception from HRESULT: 0x800A03EC..It happens when the program is trying to communicate with Excel. I am using late binding as this program will role out to our clients and I have no way of knowing what version of Excel they are running.This is the code I am running: (Those variable not in the Dim list are Pubic variables sitting in a seperate module. As I said the code runs fine so I think the problem is the way I am handling Excel)[code]
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Sep 15, 2011
I have a function where i am opening up an excel doc and spitting some data out to it. I had this working but then needed to make it so that it would work with older versions of excel as well as 2010.
It was suggested on here that i use late binding instead of including the office interop and allow the system select the appropriate version of interop to use.
[Code]...
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Feb 9, 2009
In my computer excel 2003 is installed. My code runs well in my computer but failed in another computer which only has excel 2007. If I want to make my code still functions in excel 2007, I heard of that something like late binding but I haven't experienced with that and not sure.
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Jun 13, 2011
The ExcelClass.vb code used to be in a module(Changed it to classes), and I found it online. Unfortunately, I can't find the link .The program is supposed to look through one file (I call it, the donor, cell, or excel throughout the program) and compare the values found in Column C to the values found in column B of another file, called "definitions". If it finds a match, it'll take the abbreviation in definitions and paste it over the value in column B of the donor sheet.The code maybe solid, I think it is, but I can't find out. It crashes with the above error as soon as it comes time to use the getCell function.[code]
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Apr 25, 2011
i am having some doubt & problems.
(1) if multiple versions of MS/office is installed in a computer & if i use late binding which version office instance will be rendered by the system.
(2) in the same way if i early binding then which version of office instance will open.
still be more clear i use late binding code. but here how to set the number format of the cell to text.
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Oct 26, 2010
Whilst trying to load information from an Excel File I have, I get the following message:
System.Runtime.InteropServices.COMException (0x800A03EC): Exception from HRESULT: 0x800A03EC
from this:
Code:
Dim strFileTeam As String
Dim objExcel As Excel.Application
Dim objWorkbook As Excel.Workbook
[code]....
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Aug 6, 2009
I am using VB 2008 and office 2007. Option Strict On it gave the error in the flowing statemens:[code]
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May 6, 2010
i am new to vb.net programming i am trying to access excel worksheet pre defined with name Books.xlsx through vb.net i have taken a form with one command button i wrote below code in that:
[Code]...
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Jul 2, 2010
When I try to create a instance of a COM class it throws an exception as Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))
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Sep 30, 2009
When I try to create a instance of a COM class it throws an exception as Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))
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Aug 19, 2009
I started programming in VBA, then graduated to VB6, and I am now using VB.NET 2008 Express.I have read, in the various posts, that I should keep Option Explicit and Option Strict both on, in order that I use correct VB.NET code and not VB6.I am trying to do that but am totally confused with the results of one of my programmes that was running perfectly with Option Strict off, but now advises:Option Strict On disallows late binding. To me it appears that I am using early binding, but to be honest I am not clear on the binding situation. I have checked through a number of google items, and a number of this Forum's items without seeing the light.[code]
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Aug 26, 2010
I have a simple LINQ query that is going against a collection.
Dim oList = From w In Os
Order By w.ClassTitle Descending
Select w
[code].....
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Apr 8, 2010
I am trying to convert a vb.net project to vb.net project with Option Strict On and I am getting some late binding errors like this :
CODE:
The error appears under pageArray(2).
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Sep 5, 2011
i have this code:Private Sub frmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]...
Error 1: Option Strict On disallows late binding.Im using visual basic 2010 express on a gateway laptop thats running Windows 7 OS How do i resolve this error?
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Apr 9, 2009
I have a listbox and it it I am showing numbers.It should look like this (line by line) 1,2,3,4,5,6,7,8,9,10,11.....but is is showing it like this 1,10,11,...2,20,21...3,30...ow can I make it that it will show it in number order 1,2,3,4,5......
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Sep 12, 2008
I am working on customization of a SP3D (A 3D CAD software) using VB 6.0.Now I am trying to shift to VB.Net.In VB we use to access the VB 6.0 command by ProgID.When I call a VB.Net command from SP3D I get a message Exception from HRESULT : 0x80040461.Syntax for the command - Assy.Name, Namespace.ClassNameBut when I export the Assy. to a Type Library and call the same command using ProgID it works fine.
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Sep 13, 2008
I am working on customization of a SP3D (A 3D CAD software) using VB 6.0. Now I am trying to shift to VB.Net. In VB we use to access the VB 6.0 command by ProgID. When I call a VB.Net command from SP3D I get a message Exception from HRESULT : 0x80040461. Syntax for the command - Assy.Name, Namespace.ClassName But when I export the Assy. to a Type Library and call the same command using ProgID it works fine.
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Dec 23, 2009
when i set Excel applications displayalert property to true this exception is fired...
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Mar 23, 2011
Using Visual Studio 2008 I've built a COM object that targets the .Net Framework 2.0.
I'm trying to use the component in MS Access 2007 on XP SP3. If I use early binding it works flawlessly. If I use late binding I get this error:
Run-time error '429': ActiveX component can't create object
Here's my code:
Dim objTest as Object
Set objTest = CreateObject("MyComNameSpace.MyComClass") 'Error occurs here
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Sep 2, 2009
I'm getting a late binding error message on this specific section of code: objsys.Sessions(shrd.ocSess) Any suggestions as to why I'm getting this late binding error and how to fix it? [Code]
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Aug 14, 2010
So I am taking a stab at converting a large VBA project I'm working into .NET. It's in VBA right now only because of convenience of a database (MS Access). But having stumbled upon VB 2010 Express, I'm seeing what I can do in .NET to make my project even better.To that end, one trick I am doing in the VBA project involves late binding.[code]To provide a simplified example, lets say I have three classes, clsOne, clsTwo, and clsThree. They are themselves similar, and in .NET, I'm actually reducing the code each has due to proper class inheritance. But I need to understand how to move away from late-binding, which I use in the VBA project.Now reading into VB .NET some, I've come across the 'Of' keyword, and this looks like the holy grail that I've been seeking. Please understand that these example is not actual code, and the issue cannot be solved (as far as I know) by fancy inheritance and overloading/overriding.[code]
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Dec 11, 2009
I have strongly typed code which throws a Late binding Disallowed due to Strict On exception. Is there a way to allow late binding, without turning my stict option to off?
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Apr 12, 2010
The question is intended for lazy VB programmers. In vb I can do and I won't get any errors.
Example 1
Dim x As String = 5
Dim y As Integer = "5"
Dim b As Boolean = "True"
[Code]...
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Jul 28, 2010
I have a class from where I need to set objects in another form?
Form1:
vb.net
Function SetMyObject(ByVal frmTarget As Object)
frmTarget.PictureBox1 = Form1.PictureBox1
End Function
(Not tested code, just wrote to show what I mean)So that's the late binding one.I should also say that the frmTarget variable isn't static so thats why I can't make something like Form2.PictureBox1 = Form1.PictureBox1
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Nov 22, 2011
I should convert some code from VB to C#. Given following lines of VB work (I think only because option is not set to strict):
Dim someProp As SomeType
Try
someProp = CType(SomeInstance, Object).SomeProp
' ...
Due to late binding, this code is possible under VB. Of course, following won't work under C#:
SomeType someProp;
try
{
someProp = ((object)SomeInstance).SomeProp;
// ...
How could I formulate something similar under C#?
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Nov 3, 2009
I don't know if it's because I didn't declare something properly or in the proper place.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If My.Computer.FileSystem.FileExists(file) Then
[Code].....
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Mar 1, 2012
I like to keep Option Strict On, but in some cases I need late binding.
For example I need to read the value of Geometry.Area when Geometry could be either a Square or a Circle.
It is not my object model, and Square and Circle are not derived nor share an interface that implements the Area property, so I need either a huge Select Case for each geometry type and for each property, or I use late binding.
I tried with this and a few similar variants, but I couldn't get it to work:
Geometry.[GetType]().InvokeMember("Area", Reflection.BindingFlags.GetProperty Or Reflection.BindingFlags.Public Or Reflection.BindingFlags.Instance, Nothing, Geometry, Nothing)
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Jun 16, 2011
I am trying to get some code to compile after switching Option Strict On. However I am using some Interop with VB6 and passing in a form object ByRef so Form.Caption fails and I can't convert it to type Form because a VB.NET Form doesn't have a caption property.
How can I can get the following to compile with Option Strict ON:
Public Sub EditFormLegacy(ByRef objForm As Object)
objForm.Caption = objForm.Caption + " Edited"
End Sub
Is there any way to switch option strict off for specific methods?
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Feb 14, 2006
I've recently converted some VB 6 code over that used the old non-structured exception handling. I also have some .NET classes that raise custom exception classes. When the code was VB6 I used to expose my .NET classes using COM interop and errors raised from .NET classes were being caught correctly in VB6. Now that everything is .NET the old non-structured exception handling is still there in the converted classes. But now the Err.Number is not reflecting the HResult of the error raised. I wrote a simple little Windows Application form with 2 buttons to simulate the problem. Here is the code snippet:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
On Error GoTo ErrHandler
Err.Description = "Test Error"
[code]....
If you click Button1 you get the following message:
-2147215379 : Test Error
If you click Button2 you get the following message:
5 : Test Exception
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Nov 5, 2008
i'm using VB.NET 2003 application program.i'm using WinSock in this program. on Page_Load, i used this code[code]......
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