VB Datasets - Create A Lookup Program For Library Books
Jul 2, 2009
I want to create a lookup program for library books using VB6 or VB.net.
I have created a Form1.VB with two listboxes :- Listbox1 Listbox2.
Im using an Access Database with a Library Category Table
Field1: Category
Library Title Table
Field1: Category
Field2: Title
Field3: Author
Field4: Publisher
Using the Data Adapter ConfigurationWizard Ive created
OleDBDataAdapter1
OleDBConnection1
And from the Library Category table Ive created Dataset1 attached to Listbox1
OleDBDataAdapter2
And from the Library Title table Ive created Dataset2 attached to Listbox2.
Both Datasets fill using the Preview Data function. I then load Variable CategoryString with Listbox1.text,
and I would like to know how to search Dataset2 and retrieve all titles linked to that category and display Title, Author, Publisher in listbox2.
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Apr 8, 2009
I am almost finished building my application. All the data need is being inputted from various locations. I have a form that is suppose to consolidate all this data into a specific format. There are 47 fields that have to be populated and/or calculated based on two fields, the Username and a date range (this part is done). I was trying to set each of the TextBoxes equal to the SQLCommand that would return the proper value, but i am not calling it correctly. Would somebody please take look, is there something i am missing, do i need to write it in a function? I have had to use the Select statement itself in a couple of filters so I'm pretty sure that is correct, but i need help getting it to run the sqlcommand.[code]
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Jun 21, 2011
I have a Visual Basic Class Library project. It generates a DLL. Is there a method to generate a static .LIB to which I can do a static link?Alternatively, can I do a static link against a DLL?
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Oct 16, 2011
I am building a program that calculates the number of books by points.Ex: 1-3 books read are worth 10 points, 4-6 are worth 15 and > 6 are worth 20. The issue I'm having is getting it to calculate the the first 3 books, the 2nd 3 books and then the > 6.Ex: User inputs 8 books read. It should display 115 in the label.
1. I'm using an If statement (should I be)
2. Could I use a decimal for the > 6?
Ex: intTotalNumberOfBooks = (intTotalNumberOfBooks * intFirst3Books) *#D
I know this is something simple and it's out of VB 101, but it is my very first programming class and my professor uses a copy paste method during class.
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Dec 1, 2009
What is the best way for me to have several datasets ?i've thought about creating a routine for creating datasets with a number in their names, each one with the desired data, but that's not very intelligent (although might work)i'd like to create what would be like an "ARRAY OF DATASETS"
[Code]...
(obs, i've done the same code loading one XML to one dataset and it works perfectly, i've gone back and forth more than one time to assure that it isn't just a logical mistake, it's syntax and lack of programming knowlegde.
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Apr 8, 2009
I created the dataset and connection to my SQL database at design time to make it easy to drag and drop bound controls and stuff to my form. My problem is this, when I did this it creates the connection string in design time also, but the connection varies depending on where the software is installed after the development.My question, is there anyway to set up the bound controls on my forms and everything with the typed dataset created in design time on the connection created in design time... then when the application is run, can it change the connection string at run time to get it connecting to and creating the dataset from the the correct sql database?
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Aug 27, 2009
I my opinion i think i should use datasets fully when performing select, insert, update and delete operations to DB. Foloowing this concept, The applications control flow should be:
[Code]...
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Apr 30, 2010
I'm working on a program to catalog MP3s (I know, it's a tired thing that's been done to death), and want a better way to determine if a file has previously been added to my database. I have two datasets that are structurally identical. The first dataset is populated from the database and the second is populated via the application during the scan.
I then compare each record in the second dataset to the first with the following code:
Private Sub CompareDataSets(ByVal dsOriginal, ByVal dsNew)
Dim dv As DataView
Dim sFileName As String
Dim sPath As String
Dim bgFileSize As Long
[CODE]...
This method seems terribly inefficient and I'd much prefer being able to do a join of sorts off the two datasets and delete all records from the application populated dataset where there is a match.
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Aug 10, 2011
How can I create a dll in .NET that has sub-assemblies? For example, if I have a project "MyUtilities", I'd like to create a sub-assembly "My Utilities. EmailUtilities" with classes specific to emailing. Then, in a new project, when I add a reference to the compiled dll of MyUtilities, I could access the EmailUtilities classes using code like:[code]
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Feb 7, 2012
I need to create a document library, that many user will have access to, which in it's simpliest form is simple.
The user can select a document and store it in a predeterimined file. The code I propose use to do this is[code]...
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Mar 28, 2011
I am using visual studio 2010 and tried to create a class library which I then use in an application that will create tasks using the TaskFactory and execute the class functions from the newly created class library. However I get the instance not defined errors in the application.
CLASS LIBRARY:
Assembly Name: GPStream
Root namespace: TFStream
Project with different classes:
GPStream:
gStream.vb,
[Code] .....
I do have it added as a reference.
Class library:
Assembly name GPStream, Root Namespace GPStream
Project name GPStream, Main Class gStream
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Feb 7, 2012
I hear COM here and there and I want to know is COM and a COM dll the same thing, and most important: when I create a Class library project is that a COM component?
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Aug 11, 2010
I am trying to create a DLL from a class library in Visual Basic.
First I created a new Project in Visual Basic Express 2010 as a class library. Then I added a class which contains a function that I want to access in another program. This is why I want to export the class library as a DLL. In visual studio I am compiling the project which refreshes the saved dll in the bin folder of the project directory. When I open this dll or include it as a reference in another executable visual basic project, it does not find the function. how to generate a dll from a visual basic class library properly?
Here is the code of the class stored in the class library project:
Public Class Test
Public erg As String
Public Shared Function fTest(ByVal in As String, ByRef out As String) As Boolean
[Code]....
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Jun 21, 2010
I am developing an application and I use a 3rd party library which is basically Native excel. The problem is that this library does not implement an event which is able to notify me when the value of a cell value changes.
[code]...
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Sep 22, 2009
I want to know how to make my own video player in the dll class library. The methods that I want to create is to make the size frame border, make the size of the video screen, control to improve the video quality, enable contextmenu anywhere, controls the video like play, pause, stop.....etc. Are there is possible to create my own video player in the dll class library?
I wish to use the flash player but I can't control them by make the size of the frame border, disabled the flash menu and replace with contextmenu, control to improve the video quality, apply to change the skins.....etc
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Sep 17, 2009
I want to know how to make my own video player in the dll class library. The methods that I want to create is to make the size frame border, make the size of the video screen, control to improve the video quality, enable contextmenu anywhere, controls the video like play, pause, stop.....etc. Are there is possible to create my own video player in the dll class library? I wish to use the flash player but I can't control them by make the size of the frame border, disabled the flash menu and replace with contextmenu, control to improve the video quality, apply to change the skins.....etc
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Dec 30, 2009
I know you can create a class library in C#.NET and then use that dll in a vb.net project and everything is just peachy. But can you use C++.NET and VB.NET/C#.NET in that manner?
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Sep 21, 2011
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Mar 1, 2011
I am using VB .NET 2003. I have created a user defined Class Library and created a reference to it in my application. Is there a way I can compile the application so that the Class Library DLL is embedded into the application? I would really like to be able to distribute the application without having to distribute the DLL as a second a file.
In other words, I made a New Class Library lets say called TEST. I developed a new class within this library called MYCLASS. I built the Library TEST and created TEST.DLL. I then made a new visual basic project called APP1. I added a reference to TEST.DLL. I now can use TEST.MYCLASS within my APP1 project. The application APP1.EXE will run in the test environment, but if I move it to the runtime environment it will give me an error "File or assembly name TEST or one of its dependencies was not found". To correct this error I can place TEST.DLL in the directory where APP1.EXE resides. I would prefer not to have to put TEST.DLL in the directory. Can I easily compile it into APP1?
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Nov 17, 2011
I want to start building and documenting a toolkit for a small development shop. Googling around lead me to something called VBCommenter. Is that a good tool to use? Has anyone had experience with other similar tools?[url]...
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Mar 14, 2008
I want to create a Class Library that has forms to that the users can perform some functionality. Is that possible in VS 2008? I believe it is, but can't find any examples out their to provide a template or a guide to create mine. What I am trying to do is put common functionality in a class library to multiple applications that I create can access this class library to perform some functionality.
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Dec 30, 2009
I have an application in VB/C# .NET which needs to interact with a third party API, but I would like to interface it out so I can use a mock API for testing purposes.[code]...
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Jul 24, 2011
How can create license for my Class library projects(dlls) or win apps?
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Oct 19, 2010
I created a Class Library project in Visual Studio 2010 and created added the following VB.Net class[code]...
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Apr 8, 2009
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[Code]...
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Mar 3, 2009
Does anyone have a program that will find Visual Basic 2008 code and place it into an organized code library?
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Sep 25, 2009
I have a program that belongs to vb windows form application and i want to make the program in vb class library[code]...
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Apr 17, 2010
My program used to run on my system just fine until I removed some other applications. Then the proggy was giving me a runtime error. The funny thing is that once I installed visual basic 6 and added a reference to dao360.dll, or the Microsoft DAO 3.6 that the program then worked without error.
VB6 was never installed on this system before. The program worked just fine until applications were uninstalled from the system. What happened that caused the reference to stop working? Why did the program stop finding dao360.dll even though the program itself wasn't modified since vb6 wasn't installed?
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Mar 16, 2012
I'm looking for a decimal to alphanumeric number base converter library in Visual Basic that does not use recursion. [url]...
which includes a demo app but discovered that it uses recursion. The problem with it using recursion became apparent when I attempted to integrate the library into my own Visual Studio Express 2010 Visual Basic project: I got a stack overflow exception.
Now I could consider increasing the size memory allocated for the stack but it might be hard to determine what this would be, given that the recursion depth might vary depending on the value to be converted.
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Aug 24, 2011
I'm starting a new project to handle info from some text files, a kind of sorting module so I'd like to give it a try using LINQ but looking for a book I realized that there are more c# books than vb, so I wonder if c# have better support or if it is more suitable than vb.
You think there is some advance on use c# or vb.
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