Converting A VB 6 Dll To .Net And Referencing In VS 2005
Jun 30, 2011
I was directed to update an old VB6 dll to VB .net as we are moving away from COM objects. The dll contains one function that does a bunch of high math calculations. I opened up a new class project in VS 2005, Imported System.Math, and then basically copied the function code from the VB6 project into the new class. When compiling, I made the assemble COM-Visible and also checked the Register for COM Interop in the project properties. I then copied the dll and tlb files to Windows/system32 and tried to register using Regasm.exe.
Even though I'm using the correct version for .Net 2, I still get error RegAsm : error RA0000 : Failed to load 'C:WINDOWSsystem32eagetairmiles.dll' because it is not a valid .NET assembly. When attempting to add a reference to it in my new .Net project, I see it in the COM tab - but in the location it was developed in, and I receive the following error: Converting the type library to a .Net assembly failed. Type library mydllname was exported from a CLR assembly and cannot be re-imported as a CLR assembly.
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Oct 5, 2009
I have a VB6 app that I'm updating to .Net. This app interfaces with PeachTree Accounting through there type library, which I have a reference. When I try to create a reference to Peachtree in .Net,
1. Select References from Myproject
2. Click "Add"
3. Select the "COM" tab
4. Select the "Peachtree Accounting 17.0 Type Library"
When I add the reference, the Path says "<The system cannot find the reference specified>".
There is something different about the way the path is listed. All the other paths are listed like "C:Program Files..." but the Peachtree library is listed like "C:PROGRA~1SagePEACHT~1PAWLegacy.dll"
This is how the old DOS use to list names longer than 8 characters. In my VB6 app the reference path is "C:Program FilesSagePeachtreePAWLegacy.dll"I tested other references with simular paths like "c:progra~1..." and they work fine. It's probably something else. I'm fairly new to .Net so can anyone point me in the right direction?
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Apr 16, 2009
example:textbox1.text = "frmHelp"...is it possible to go to the form (.show) by simply using the form's name, also how?
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Jun 30, 2010
I'm making an application that will be available as both a Windows App and an ASP.Net App. The web app has a much scaled-down version of the functionality of the window app. I want to reference the classes contained with the windows app from my web app. The thing is, my classes in the windows app may have some modifications: if I reference them in my web app, will this pick up the changes made automatically? Also, referencing the project is for development work, when I go to deploy the web app, I will probably need to reference the classes as dll's. So the next questions are: 1. Is this the right way to go about doing this?
2. How do I make the Classes I have into self-contained dll files?
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Aug 11, 2009
[URL]..From the above link,i studied about the conversion.But i have a confusion:Whats the difference between the following two?CInt(myString) VB Only. This function converts the expression to an integer. A run-time exception is generated if the conversion fails.
Convert.ToInt32(myString) This function converts the expression to an integer. A run-time exception is generated if the conversion fails.
When should i use the first one and when to use the second one?
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Sep 21, 2010
i have the following setup What i am trying to do is, when the user clicks on the 'calculate age ' button it must calculate the age and display the result based upon the selection in the combobox i.e if 'Days' are selected then it must display in days, if weeks are selected then it must display in weeks..etc
Similarly when the user clicks on the 'convert to date' button , it must subtract the given days(or weeks or months or years) from Todays date and set it to the maskedbox
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Apr 6, 2010
I'm having an issue with my base conversion program. It seems to have a problem converting from base36 to base10 properly. After debugging all night, I've found that it's one certain function that's not working properly. The function seems to convert every last test number correctly, until I start getting into 11-digit numbers in base36. I have the max digits allowable for base36 set to 12 (so as not to exceed the base10 18-quintillion or so that an unsigned long can hold). I'm starting to think the issue is with VB and not with my code.The function as I've written it is below (DIGITS is a global const string ="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ", and itr is a global integer used throughout the code for iteration):
'-----------------
Public Function FromBase10(ByVal iValue As ULong, ByVal cBase As ULong) As String
Dim remaining As ULong = iValue
[code].....
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Mar 29, 2010
I have a class that includes a timer :-
public class clsQueryObject
private tmrPoll as new timer
Public sub New()
[code]....
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Aug 9, 2011
In a vb script program, I have the following code objCommand.Properties("Page Size") = 9999..I have converted most of the vb code over, but this statement gives me a "Property Item is ReadOnly" error. How can I rewrite this line to work in vb.net?
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Aug 5, 2009
I have a form which accepts the time ( start time and end time)in a text box. What i want to do is to convert it into time and get the difference of it. I googled it and found lot of question regarding converting to date and time. but i only need "time" and dont want date.
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Dec 10, 2009
how to convert system.string to char for label text?? Here it my
[Code].....
I need to get the strings from the site and input the fields strings in the label text, so I needs to convert char of system.string but i don't know how to fix it.
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May 27, 2010
I'm converting my date 01/June/2011 to FileTimeUTC so I'm getting a value of
129514186100000000
How do I convert it back to the date?
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Aug 27, 2010
I want to create a converter that will be capable of converting a .doc file into an .exe file: How to proceed?
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Dec 28, 2010
I've been asked by management to convert all of my applications from VB 2005 to VB 2008 (in preparation for taking them to VB 2010). I have a VS 2005 application that uses an ADO Data adapter which was defined using the GUI. I normally define my connections in code, but have been asked to get away from that in favor of ADO (and similar) data adapters.When I run the conversion wizard in VS 2008, it appears to convert this program, with some warnings and I get the 'Conversion Completed' dialog box. However, the VS 2008, will not let me close the dialog box, even after waiting for 3 hours. The only way to get out is to reboot the system.
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Mar 7, 2010
Are the codes generated from Visual Studio.net 2003 Visual Basic fully convertible and compatible ti Visual Basic 2005 Express Edition ? I tried converting a project which was develop from VS 2003 for VB 2005 but after the process there are some commands which is not supported in the latter version. The deployment module in this project is also not recognised in VB 2005.
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Aug 22, 2011
my goal is to
1.Take an file(exe,dll,etc)
2.Convert it into hex
3.place that hex values in a stack
4.Execute the values inside the stack to its original form(i.e. take the elements out of stack and then convert it to a compile format)
Imports System.IO
Sub Main()
Dim fileName As String = "ABC.exe"
[code]....
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Feb 24, 2010
The program I am trying to modify was initially written using VB 2005 Express. I have subsequently downloaded the 2008 version. The program creates a monthly spreadsheet from a template. The old code that will no longer (highlighted and underlined) compile is as follows:
[Code]...
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Apr 24, 2012
I am a self-taught noob and have been given the task of developing someone elses code. I have rebuilt someone elses solution into my dev machine and able to run with some minimal bugs. I don't know where to add an .xls file into my solution
System.IO.FileNotFoundException was unhandled
FileName=TestRec.xls
Message=Could not find file 'TestRec.xls'.
[code].....
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Apr 25, 2010
I have a line of VB code which looks like this : If GroupTagDropDownList.SelectedValue Is "1" Then The system doesn't throw up any errors for it but the statement doesn't appear to work.
I think that the problem must lie in how I've referenced the '1' value - I've tried putting single quotation marks around it but it appears to make no difference at all.
There is definitely a value in the drop down list of value '1' but it doesn't appear to be read at all.
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Sep 9, 2010
I have been given a .dll file (implemented in C++) that I want to use in my VB.NET application.When I try to add a reference to this dll using Visual Studio I get the following error:A reference to 'path-to-dll' could not be added. Please make sure that the file is accessible, and that it is a valid assembly or COM component.
Based on this error I concluded that I need to register the dll. Since it has been implemented with unmanaged code I tried to use the regsvr32 tool to register it. But when I try to register the dll using this tool I get the following error:Name-Of-DLL was loaded, but the DllRegisterServer entry point was not found. This file cannot be registered. how do I add a reference to this dll in my VB.NET application?If I have to register it, how?
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Aug 10, 2011
Imports System.Runtime.CompilerServices
Module StringExtensions
<Extension()>
Public Sub Print(ByVal aString As String)
[code].....
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Sep 28, 2010
I need to reference a C++ dll from my Java project. The method that I need to expose is actually written in Visual Basic. Is there any way to access the Visual Basic code in C++, so that it can eventually be accessed in the Java project?
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Dec 7, 2010
I have a java class that is used to for ssl connections to a web server. I have got some of it converted however there are serveral java libraries that i have been unable to figure out how to call or reference in vb.net. First off i'm not even sure if it's possible to reference them. In Java code they look like this:
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
[code].....
I'll use the last one for example: I get a "Namespace or type specified in the Imports 'org.xml.sax.SAXExeption' doesn't contain any public member or cannot be found. make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use aliases.
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Jun 15, 2010
I have a DataGridView that is being filled with data from a table. Inside this table is a column called 'group' that has the ID of an individual group in another table.
What I would like to do, is when the DataGridView is filled, instead of showing the ID contained in 'group', I'd like it to display the name of the group. Is there some type of VB.net 'magic' that can do this, or do I need to cross-reference the data myself?
Here is a breakdown of what the 2 tables look like:
table1
id
group (this holds the value of column id in table 2)
weight
[code]....
BTW - I am using Visual Studio Express.
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Apr 19, 2011
I've been poking around in some projects written by one of our contractors, and he seems to be storing a lot of settings in the main "app.config" file for the application, using, for example:
<add key="SomeClass/SomeValue" value="False"/>
And then referencing the key value in the "SomeClass" class in "SomeProjectLibrary" using
ConfigurationManager.AppSettings.Get("SomeClass/SomeValue")
While this works, I guess, it also pretty much sucks. I was wondering if anyone knew of some more elegant way of creating variables in the "app.config" file, which could then be used across various applications within a Solution?
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Jun 11, 2012
I'm developing an app in which there's hundreds of different calculations involved and would like for my app's admins to be able to tweak these calculations by specifying the formulas.For example, my database table contains price and quantity. One of the columns 'X' might contain "(price * quantity) over the past 7 days". How can I allow my app's admins to change the calculation from "7 days" to "14 days"?
Is there some way to make calculations dynamic within VB.NET or do I have to rely on stored procedures and write some code to alter those procedure if a change is needed? What are the best practices in this type of a scenario?Ideally, I would like to use something similar to the "Tags" box used when posting questions on here to bring up the available fields and add mathematical operators in between them to perform calculations. It might be adding more complexity, but would be great if an existing calculation isn't overwritten so that it could be used in building a new formula.
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Feb 20, 2009
how to create a class yet, and I think I need to learn how.I am wanting to shorten my code in a form, thinking of creating several classes to do so.Lets use a Listview as a reference if you dont mind.Say there is a listview, you have a numeral amount of if statments to fill by. Is there a way to create a class(is this the way to go) so that you can open the class to modify that specific block of code? Example of questionYou have multiple items you need to add for each if statement. Animal as a group Dog as an item 14 years as a sub item Cat as an item 11 years as a sub itemIs this the way to go, if so how do you create a class and call it from a form?Davids Learning
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Mar 15, 2010
Ive have a listview on my form and need to populate it with data from my Table called "tblCustomers". However I need to only retrieve records based on field that is populated with data called "Joe". In order for the SQL syntax to retrieve the name "Joe" then the SQL syntax needs to reference the Label on the form called "lblName" which will have the name "Joe" as the caption.
How can my dataset have SQL data that references my label object on my form?
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Jun 25, 2010
i have just installed Visual Studio 10 and DirectX SDK (June 2010), however i can't seem to add directX as a reference. I have also tried Direct X SDK (march 2009).
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May 31, 2009
I am currently working on an application that is about 90% finished, and we just got an addition that requires us to create a new project in the solution. My question is, I have a bunch of classes created in the main project that deal with the database, and it has a lot of functionality that I could really use in this other project.
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