Object Library Public Constants Not Useable Without A "Full Pathname"?
Apr 19, 2010
how to use VB to access our SQL server - we've got an app that was coded in Access 2000, using DAO, which in Access 2010 (if I understand right)is DOA, and we should use ADO. So I worked up MSDN's example (http:[url].. In Visual Studio 2008, Visual Basic. I have added in a Reference for MS ADO 2.8 Library to my project. I can see in the Object Browser the ADODB Namespace, and I can look in there to see the ObjectStateEnum, and there is the adStateOpen enumeration. Wonderful. But in my code, I must put it this way:
I must be missing some glaringly obvious thing, but none of the items that are declared as Public Constants in the object library are "visible" to my program. Why?
I'd like to get a more refined programming style and I was wondering if any of you might give me a hand...(How to declare public variables, constants, functions...in a proper way),is there any useful link or pdf document I could have a look in order to improve my style?
I am just testing how to use dll and after googling a lot, I made it work partially...Created new project Class Library, named it myFirstDll and made a Public Shared Sub helloDll to do something. Now since this is my first time, the dll is simply showing the input in a msgbox:
Public Shared Sub helloDll(ByVal msg As String)
If msg <> "" Then MsgBox(msg, MsgBoxStyle.OkOnly, "WE HAVE SOME MSG") Else MsgBox(msg, MsgBoxStyle.OkOnly, "NO MSG") End If
End Sub
After building the dll-file, I started a new project using normal windows forms, named it "useMyDll", I clicked Project -> Add Reference, and added my dll. The program file that I made needed a textbox and a button for using the dll:
Private Sub useDllButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles useDllButton1.Click Dim msg As String = Nothing msg = TextBox1.Text myFirstDll.myFirstDLL.helloDll(msg) 'this will be in msgbox in dll-file End Sub
And when running this I could write something in the textbox and a msgbox with that input would pop up. Really happy with that. My first attempt to make a dll and use it was very successful. Then I thought, what about running the dll from rundll32.exe? It would be handy to make a dll that could be run without my exe. After googling a long time, I tried to add a new button:
Private Sub useDllButton2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles useDllButton2.Click 'Now let us see if we can open it using rundll32.exe ? Dim msg As String = Nothing msg = TextBox1.Text
[CODE]...
Now the first button still works just fine, but the second button gives some error (translated to english would be) like "missing entry: helloDll" I also tried to open with command prompt, same result.
After googling again I read one place that you can't run a visual basic dll with rundll32.exe, so is this true? Or is there some way of doing it? I read one place that it works if you make the dll be "COM-Visible", but I don't really understand how to or what it means. I tried to open properties, clicked Assembly Information, and "Make assembly COM-Visible", but this doesn't change anything. Then I read somewhere that it has to be in a module to work. Could it be that I need to rewrite some codes and it would work, or would I have to start learning c++ in order to accomplish this?
I get an error while trying to install a third party Excel add-in [Thomson One Analytics]. Error: "Compile error in hidden module: Main" Microsoft Excel 2003..But when I had the Addin unlocked.I noticed that it was getting stuck at a specific line in the MAIN module of the Addin package and the debugger throws a compile error message saying that: "Object library Invalid or contains references to object definitions that could not be found". Earlier when I had this issue,I made another user login to the PC and we were able to use the add-in successfully. But this time even a different user with Admin Rights was not able to use it. [code]
Tried to install and run the Addin on the same computer by a different user having admin rights, no go.Made sure that he references for the add-in in the VBA editor are correct, by comparing them with a working computer, no go Re-installed "Service Pack 6 for Visual Basic 6.0: Run-Time Redistribution Pack (vbrun60sp6.exe)", no go. Ran repairs on Excel, no go Re-installed Excel, no go
I am calling this function when a button is CLICKED and received the error; The name "The" is not permitted in this context. Valid expression are constants, constants expression, and (in some contexts) variables. Column names are not permitted. Unclosed quotation mark after the character string 'True)'.
The function is as follows;
Private Sub Save() Dim conn As SqlConnection = GetDbConnection() Dim query As String Dim cmd As New SqlCommand
I am trying to log the contents of an object to a text file. If I do a debug.print of the object itself in the immediate window, it prints all of the values of the object's properties:
However, I can't seem to access this as a string in code due to a type mismatch. I assumed I could get this information using the .ToString method, but all that returns is the object description with none of the properties or values:
i'm having problems creating a public string varialble in a class or module. i am going to be refering to it in many forms so this way i only will have to change the text of the string once and not on each form.Currently when i try to use the new string variable as an object variable from another form, it isnt showing up as an object i can reference. [code]
I'm working on a project for my VB class at school. I am creating a form with several inputs and it calculates the total amount owed for a car sale. I have a text box for input of the TRADE IN VALUE of a car. the program is looking for a numeric input. If there is no trade in, how can i get this box to default to 0.00 so it doesnt error the program?
I want to add Microsoft Word Object Library to my toolbox from the COM component list. However although I have MS word 2007 installed in my computer this component is not available or not visible.
This is strange. I tried to create a new project to reference the Outlook Object Library, but I can't get the code references to work. Here's what I'm doing:
Quote:# Start Microsoft Visual Studio .NET.# On the File menu, point to New, and then click Project.# Click Visual Basic Projects under Project Types, and then click Console Application under Templates. By default, Module1.vb is created.# Add a reference to the Microsoft Outlook 12.0 Object Library. To do this, follow these steps:
1. On the Project menu, click Add Reference. 2. Click the COM tab. 3. Click Microsoft Outlook 12.0 Object Library, and then click Select 4. Click OK. If you are prompted to generate wrappers for the library that you selected, click Yes.
# In the Code window, replace the default code with the following code:
to have Microsoft Excel 12.0 Object Library when I click on Add Reference... in Visual Studi 2005, do I need to have Excel installed on my PC or is it ok if I gac Microsoft.Office.Interop.Excel.dll
My company is currently in the process of upgrading from Office 2000 to Office 2010. The upgrade won't take place until October, but I am currently testing it on my PC. I have some applications that reference Microsoft Excel 14.0 Object Library VERSION 1.3.0.0 and export DataGridView results to Excel. Since I upgraded my PC to Office 2010, my version of Microsoft Excel 14.0 Object Library was upgraded to 1.7.0.0. Now, Office 2000 users are having issues when trying to export data. They get the following error:"Attempted to read or write protected memory. This is often an indication that other memory is corrupt."I can't debug to find out the issue because I am running Office 2010 and it works perfectly fine for me. Has anyone else encountered this? I think it's happening right around when it starts to save the file.[code]
Using the Office 2010 Object Library to create Excel documents from code. Is there a way to deploy the project without having Office installed on the target machine? I have a 2000 Server that Office 2010 is incompatible with.
I have to make a VB project for one of my college Co-Sci classes. However, I am having issues doing what I think is logically possible. Part of our project entails creating a user defined class, then create a form that then instantiates an instance of the object type. After that we are to list the item in a listbox. That is all well and good and works fine.
What I need help with is looping through each object in the listbox, getting some data from the object, then moving to the next.
I have been trying something similar to c++. For example, an object contained in a c++ array can be accessed like this:
array[index].someObjectMethod().
How would someone do something similar to that for objects contained in a VB listbox? I imagine it starts something like this:
I've got a piece of code of a class. When initialised a new object is made on a picturebox. But what I don't know is how does the program know that the public property x and y means the coordinates of the object?
I'm writing this program to determine deterioration after X amount of years and i keep getting that same error.ive tried redetermining and revaluing variables.
Public Class Form1 Dim Anldep As Double Dim endval As Double
So I would like to explain what am I doing before I post the question. I would make a textbox in the form, then I add a Microsoft Speech Object Library reference. Then using Microsoft Speech, I would have the text-to-speech option. In the same class I would add this code:
Okay normally this was easy to do, but now with IE9 Visual Studio 2010 hangs and crashes. The problem seems to be even worse because you can't build an Interop.mshtml.dll to match version 9. I've tried using the VS command prompt with no luck. Allegedly this is how it is done, but there are no known examples that actually work. If anyone has done this with success
i want to use Microsoft Word Object Library for web application , but i dont have office installed in the server side. but i do have a 2007 version installed in the developer machine from where i can build the application. my question here is will my application would be running fine in server , do i need to also install office at server also.
I'm using VB2008 Shell function to execute file with arguments. But I'm not sure how should look my PathName in Shell function with all necessary arguments and command-line switches. Without arguments: [Code]
