Create A Global Dataset?
Dec 27, 2010
I want to create a dataset that I can access from any form. I already created the tables and columns using the dataset designer. I read that I can declare the dataset as public in a module, but when I try to access a table I have to put the name of the module in front otherwise I get a "Reference to a non-shared member requires an object reference" error. When I declare a variable as public in a module I never have to specify the name of the module to access the variable, so why do I need to do it for a dataset? The code in my module is:
[Code]....
View 5 Replies
ADVERTISEMENT
Jun 28, 2009
I created a SQL database using the migration tool.I am converting my access forms to VB.net (VS2008).I am wondering if I create a single dataset in studio to the database or do I create a dataset for each form (query)? I am trying to determine what the best solution is. Many of my forms have drop downs that are populated using queries from tables.
View 3 Replies
Apr 19, 2011
I have finally got my code all working, but there is just a quick query really. At the moment I have all the database stuff in each form seperatly. When I place it in a global module, it looks like the dataset is being duplicated I was wondering why this happens when I place it in a global module?
This the code I use and the code I would put in a global module
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String
Dim dbSource As String
[CODE]...
View 1 Replies
Oct 9, 2009
does VBasic allow a MS Access Database DataSet create a Stored Procedure or will it only allow SQL Database DataSet create SP...
View 4 Replies
Jul 12, 2009
If there's a way to have a function, that i can call from any code-behind on my website.
for example, i want to be on any page of my website, and be able to call this function[code]...
View 17 Replies
Oct 11, 2010
How Can I create a Global Varibale for my vb.net project. When I LongIn I want to keep the user Id in a varible and I will Use it in deferent Forms. And The User name will be saver in the varible untill I close the Software.
View 1 Replies
Apr 1, 2011
I'm trying to build a language dictionary in VB NET in order to be able to have several languages in the application.This dictionary has a init method that loads from database the entire dictionary and stores it in memory.In the rest of the classes of the project, I added the reference and I can use directly the object without create a new instance because their methods are shared.
how i have to load the dictionary content in order that the rest of classes only accessing to Language.GetWord method obtains the properly record of the collection, same way as My.Settings class.When My.Settings is used from any class the values are loaded. I'm looking for the same effect.This is the code of the class:
Public Class LanguageProvider
Private Shared CurrentLanguage As Collection
Public Shared ReadOnly Property GetWord(ByVal Label As String)
[code]....
Function LoadLanguage must be called when the application loads, in order to access once to database. After that property GetWord must access to the collection with the words and return the result. The problem is that the instances are not the same and the dictionary is not loaded when a class uses it.
View 1 Replies
Feb 13, 2012
I want to add this to my visual studio. [URL]. I understand I should ad it like normal custom dll. but how do i get the dll file from the zipped source.
View 2 Replies
Jul 28, 2011
Where and how do i create a global variable for a combobox? I need to use it on different forms.
View 6 Replies
Jul 7, 2011
I want to create a global function to use throughout my application. Let say it's about the connection to the database.My code that i plan to use in my global function is:
myConnection = New SqlConnection("...........")
myConnection.Open()
So that I can call it to use in every form throughout my application. This can make me easy to edit the connection later.how to define this global function and how to call this function in the form.
View 2 Replies
Jan 17, 2012
Okay, Im a newbie to VB, so how do you create a Global variable inside a sub.
View 6 Replies
Dec 4, 2009
how to create a global variable for this situation: I would like to store who logs in to a system (like, who is currently logged in, when he logged in) and then use that info for a transaction form, which will look like this: which admin made the transaction).
If I were to use a global variable, it would mean having to pass it onto several forms right (eg: from login form to the forms that will use the log information). I'm also thinking of just having a config file that will store the said login info that will be changed everytime a user logs in.
View 5 Replies
Mar 15, 2012
evrytime i add new controls to a form in vb.net the designer regenerates code and asks me to make corrections, so i have to keep on changing the object declarations to global using the 'global' keyword evertime it regenarates code,especialy dataset objects.how can i prevent this?
View 1 Replies
Nov 30, 2011
I have some existing code that looks something like this:
[tag:cb cbid="12345" cbwidth="200" cbclassname="calloutbox" cbposition="left"] Lorem ipsum dolor sit amet, consectetur adipiscing elit.
[tag:cb cbid="123" cbwidth="200" cbclass="calloutbox2" cbposition="left"] Suspendisse eleifend enim a magna pretium porttitor.
I need to write a VB .Net global function that will match these [tag:cb] and take the optional parameters and rewrite the string with Html tags.
<div id="12345" width="200" class="calloutbox" position="left">content (based on id)</div>
View 1 Replies
May 1, 2009
i could use Global x as string in vb6 in a module to declare it with global privelages, how can i do this in vb2008? how to declare a global variable in vb2008? so that i could use it anywhere i want. i know global variables are not recommended in programming but i need one.
View 4 Replies
Apr 17, 2009
I have produced an application which works with datasets but I now wish to provide the user the ability to add and admend records within the database.But i wish to do this in a seperate form.My current dataset instanciates classes onLoad.Should i try passing the Dataset to the new form class? although I have the problem where by when i pass the dataset to the form class using code below i get this problem:[code]Should i just create a create a new connection to the database and produce a new dataset for this form? or is there a better way to do this?
View 2 Replies
Oct 26, 2009
I have an object that is defined as a global variable based on custom class. Within that class I have an event that gets fired a certain intervals. These events are fired on the same thread as where the object is declared. How do I create a global object, but have the events within that object fire on a separate thread?
View 2 Replies
May 30, 2012
I have a Public Class named UserData which consists of Login and Password properties, as well as various permissions related properties.
I declare an instance of this class in a Public Module (named DatabaseFunctions) as
Public User As New UserData Functions in that module are able to access the instance as expected. How do I access said instance from outside of the module?
Until now, I've only needed to utilize the information within that instance from within the module, so I didn't realize that I wasn't able to access it externally. Now, I need to display data contained in that instance on a form.
I had assumed I would be able to use User.Login outside of the function in which it was declared, since everything was declared as Public, but it seems I was mistaken.
View 3 Replies
Mar 15, 2009
I have loaded XML doc into a dataset (see below). That went ok. So now I can put the DS in a grid and change it.However, after changing the DS I want to export it back to a XML doc. That only succeeds partially.I am getting a XML doc, but it's not like the original (see below). And I want it to be exactly like the original.Maybe you brilliant guys can help me out The original XML code (I tried both with and without the Schema):
[Code]...
View 5 Replies
Sep 19, 2009
In VB2005, I had create a DataSet, like EmployeeDataSet.xsd, how to put it into a form?
View 1 Replies
Jan 13, 2009
I have the following code which output data in an XML format and updates a row in the dataset to say its been exported.[code]...
View 5 Replies
May 18, 2011
I've been struggling with this for a while, so I finally decided to ask the question rather than try to figure it out myself.Generally, what I want is a more robust Dataset. I have to do a large quantity of hiarchical calculations, doing a wide variety of calculations.I used datasets for similar situations in the past, but there are some restrictions with datasets that I need to have, such as:Datasets are restrictive in their calculation methods, such as having no method for doing powers calculationsDatacolumns are restrictive in the types they can be, at least in the designer. I need members of this class to be of custom types.
I like the way expressions in datacolumns will calculate only when the dependent columns change. If I build a custom class that recalculates every time the value is accessed, it takes an unacceptable amount of time to recalculate all of the fields. I'd likethe class to only recalculate the value of the field when it needs to.
View 1 Replies
Jun 5, 2011
i am trying to create a dataset for use with crystal reports. i have a dataset called dataset.xsd with two tables BatchHeader and BatchDetail these have a relationship of BatchID on both tables.(see picture1)
[Code]...
View 1 Replies
Jan 2, 2010
How to create a dataview from a datatable?
What is the basic use of the created dataview?
View 10 Replies
Sep 3, 2009
I want to create an enterprise wide dataset so that my function will call this same dataset from any of the webpage. I've created shared code in the App_Code folder. In it, there's are dataset properties. Will the pages extract info from these dataset properties each time I call the shared program or will create new property for each page.I'm trying to emulate an Enterprise Java Bean type of coding.
View 2 Replies
Jun 10, 2009
I have a datagridview that was bound using the wizard and all the column created that way. So I haven't done any code to bind the datagridview. It will pull the data from the database and dataset just fine. My problem is when I create a new row it won't update the dataset or database. I have tried different ways that I thought it would work in the code and still haven't found a usable way to do it yet. Or if I need to do all my binding and columns through code give me an idea where to start if I have to go that route. This is my first experiences with Datagridview. I normally use comboboxes and textboxes to write to a dataset and database which all work very well.
View 8 Replies
Aug 4, 2011
I have an XML file that has a basic hierarchical structure about horse racing. It has a summary of the tracks, some data about each track, then a list of all the races at each track racing that day. So lets say there are 10 tracks, and for each track there are 8 races. This is a snapshot of the data....
HTML
-<Meetings xmlns="" Jurisdiction="VIC">
-<Summary MID="MR_20110801">
<VenueName>ECHUCA (VIC)</VenueName>
<Type>R</Type>
<Events>10</Events>
<Track>DEAD </Track>
[Code] ......
I have written the code to pull down the data into a data store, but I dont know the BEST way to put the data into a set of tables. My first thought was to traverse the nodes and add rows into tables but I figure there must be a native VB process that reads the xml and puts it into the the appropriate table. How to code up the process for getting the data into a set of tables that match the xml. So lets say I have a Summary table, I would like all the data about each track to go into that table. Then I would have a Races table and have the data for each race go into that. What I have done already is import the xml into Access to create the tables (which was a breeze!) and then link that data source to my project. So I have the tables already built.
View 5 Replies
Aug 25, 2009
i have a form which accepts inputs from the user. I want to create a crystal report ( not from the database but from the form ) and to create a crystal report, i need to create a dataset. i dont know how to create dataset from the form's input
View 15 Replies
Jan 13, 2009
I am trying to create a combo box that would display data from a dataset, and also a 'Please Select' as the first item. I have written the following code which derives from a combo box and it works fine in visual studio 2003 but in 2008 would not display the comboboxtext (which is 'Please select').
Public Class DoubleDataSourceCombo
Inherits ComboBox
Dim myDataTable As DataTable
[Code]....
View 4 Replies
Dec 17, 2009
I want to create multiple dataset depend on situation. dataset number may vary each time.how can we create multiple dataset
View 4 Replies
