Create The Connection To The Database And Then The Binding?
Nov 14, 2009
Okay i have been looking around for some tutorials on databinding by code but all the ones i find use vb's built in function to create the connection to the database and then the binding but i need to do it manually. I am totally new to databinding as in i only learned about it from a previouse thread and have been fiddling since.
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So im kind of going blind here, i dont know whats going wrong or if im even using the correct dim statment for the binding,
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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?
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Aug 5, 2009
I wrote a small application in witch I create a connection to a database. I'm new to this, so I followed the steps in MSDN help. I first created a link to the database with the "Datasource" of the Visual Studio environement. Then, in the code, I create instances of the dataset in the datasource and use a tableAdapter to register my changes in the database.
Now I want to allow the user of the application to specify the path of the DB file he wants to use. How can I do so? Do I still can use the datasource in the VS environment? I don't know where to start.
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Apr 16, 2011
im sure that there are plenty of people here that have the same problem as me, but i cant seem to find a forum that explains this to me. well basically i have a program i am creating to use as a phone list, but to save data to a database on a mapped hard drive. I want to give the user the option to set the path of the database just by typing it into a textbox. The database will be supplied with the program, with all appropriate tables, i just really would like to know how to set up a connection to a database using code, and to be able to display it into a datagrid veiw. I know this seems simple to you guys,and i am really sorry, i am just new at this.
and also if u could, could u describe to me how to make it search through the database for like certain names/numbers?
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Jul 1, 2009
I have this code of sending sms but i dunno know how to make the connection for the below code to run my program.
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Dec 31, 2010
I installed SQLExpress 2008 on my computer this afternoon and have been trying to create a new database and open a connection to it. I found this code online and tried it:
Dim
conStr As
String =
"Server=MSSMLBIZ;Database=;Trusted_Connection = yes"
[code]....
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Sep 28, 2011
I have Visual Basic 2010 Express and SQL Server 2008 R2 (not Express) installed on my Windows 7 machine. In Visual Studio, I am attempting to create a Data Connection to a database in SQL server. Server Mgmt Studio is not running. When I attempt to add a connection in Database Explorer, to the AdventureWorks _Data database, I get the message "This file is in use. Enter an new name or close the file that's open in another program." There are no programs running except VB, except maybe for the SQL Server engine running the background.Please note that I can open and access tables within a database in code
within Visual Studio, I just can't add a connection in Database Explorer.Am I doing something wrong? I've been very frustrated on this issue for a long time
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Mar 13, 2011
friends i m a newer for dotnet...and i m a student i m creating a project with a simple database connection
i need to make a setup of that project but whenever i create a set up it wont connect with my database
it'll shows a error how to make a setup in vb.net with a project with a database connection
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Oct 6, 2009
how i can create a connection to a database when i open my program and then close that connection when the program closes, so that the user has a permanent connection while the program is running that can be used for multiple things depending on what the user decides to do.
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Jun 27, 2011
I basically want to make this in my application, so our technicians have an easier time installing our software. So far, I made a form with 4 text boxes: Server name, user name, password, and a combo-box to select a database.Everything was pretty easy until the database selection code. Microsoft's wizard is very efficient, there's no wait time when the database combo box is being filled.[code]That code gets the databases just fine, but obviously if an exception happens the whole screen locks up and it might take a while to recover depending on what the database error is. My question is, can I make mine just as cool/efficient as Microsoft's?
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Oct 18, 2010
binding navigators, datagrid view, binding source are all sql database parts.Will these parts still work if you havent got sql on you pc and your not using an database file (.log and .mfd) and your not coding to them, im using MS Jet/Oledb to code to Excel.What not to put on an Employee evaluation: This employee has hit rock bottom and shows signs of starting to dig.
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May 21, 2009
I am trying to build a user control that will do exactly what the SQL 2005 Connect to Server interface do, eventually create a connection string and store in a app.config file. It should allow user to select server type, server name, authentication, user name and password. It should also automatically load available servers and domain login by default.
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Nov 15, 2009
I have a problem with my program, and it's really bad because I need to burn it to disk within 12 hours and I can't get it to work: If I create a record, add information to it and click on Next Record, the ID, Status and Notes boxes content will change but the rest of the controls contents are carried over to the next record and I don't know why or how. It was working perfectly but now it stopped and I never done anything.
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Sep 25, 2009
I am using VB 2008 Express and have created an application that connects to a SQL database to populate a datagrid.The application is working properly on my computer but will not on others 'remote connection permissions' error.After some googleing I found that the express version is crippled to only work on local machines that use a database.If I purchase Visual Studio 2008 Standard Edition, import and rebuild my application, will my application be able to run properly on other PC's?
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Sep 23, 2010
i am using VS 2008 and i am following this walkthourgh in VS2003[URL]..in the part "To create a database connection and a dataadapter",say this 10 Drag these fields from Server Explorer onto the design surface.
Where is the design surface? if it is the place where i can drag and drop controls, i can not drag and drop fields of a table, how can i do it?
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Feb 5, 2010
Is there a way to display the connection properties dialog for connection string browsing(for database) in run time?
As I want the user to be able to connect to various database using the GUI.
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Aug 19, 2010
After running the following sub (VS debugger), I try to detach the database in SSMS, but it shows the connection open still and won't let me detach. If I close program in debugger, the database shows no connections. I check the dataadapter's connection in the finally block and is shows closed. What gives
Private Function ClientMasterDBFiles(ByVal MasterClientDBConnection As String, ByVal DBName As String) As DataTable
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Mar 3, 2012
I Want to develop a software like Yed.i just don know where to start.how we can create a workspace where i can drag and drop icons and create connection etc etc.
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Nov 7, 2010
i am using access database for my program. now i have connected to the database in MDI form of main exe, and ir also works, user can log in, it gets verified etc etc etc. now here is the problem, when i load a form from dll and try to use any sql query on that form, i get message, "database connection is not opened". so what i did was, i added the connect() (a function i designed to connect to database) in the load part of the dll's form, it made the trick, query's started to run, everything went fine, and when i reload the form i.e after closing the form, i load it again from MDI form, i get error, connection already open..
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Sep 14, 2010
I am using VS2010 and have been watching and learning from Beth Massi's great videos. I have built some test apps using her example of (under Server Explorer) - right clicking on "Data Connections" and selecting "Create New SQL Server Database, and in the server name just like she does, I type ".SQLEXPRESS", fill in the "New Database Name" and fill in my fields, build my tables, build a simple little windows form app. add new data source, etc. and everything works great. Then I try the "Add Connection" option again under Server Explorer and use the default (for me) of "Microsoft SQL Server Database file(Sql Client)", fill in a database file name (it creates a new one for me), "Test Connection" works, build my tables etc, and then build a simple little windows form app. add new data source and everything is great once again. Except I am not sure what is actually happening between these two options. Under the "Create New SQL Server Database option I see (in Server Explorer) a "myapp.dbo". Where is the actual database file? Under the "Add Connection" I see a "myapp.mdf" file in the Server Explorer. Also what happens when I "Publish" (deploy) my app? When I look under application files under Publish, I see the .mdf file listed as "Required" under the "Add Connection" option, but with the "Create New SQL Server Database" I don't see any database files listed? What is the difference between these two ways of creating a database for a VB Windows Forms Application?
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Apr 15, 2010
I'm trying to create a collection of variable binding in a class.It is intended to look something like this:
Dim x as integer, s as string
Dim c as new VBindClass
x = 1
s = "Hello"
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Is there some function that allow us to retrieve a unique ID for a given variable and also get/set based on variable?
Update:At last, I've managed to found the answer. Here's the code:
Dim gh As Runtime.InteropServices.GCHandle = Runtime.InteropServices.GCHandle.Alloc(obj)
Return Runtime.InteropServices.GCHandle.ToIntPtr(gh).ToInt64
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Jun 24, 2010
Im new to VB.net programming and I was wondering on how can I hardcode all of this components. What I'm trying to accomplish is that I want to create my own Binding Navigation along with other components hardcoded so that I can navigate through the DatagridView with my own buttons.. Here is a screenshot
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Jan 2, 2010
I'm using a OleDB connection to a access database. I'm entering a row into the database to set some user preferences. What i need to get is get back the row ID of the row I just entered. I'm more familiar with PHP and with PHP I use use this entry
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Apr 25, 2009
I developed an application with old VB form and binding the data from Oracle database into VB form. Actually, I tried to bind the data more than 35000 records in to grid. But, it takes more than half an hour and also form was hanged and there is no output. Can you please let me know the solution to fix it and bind the data without any hang in my application. What are the steps to be followed to fix it?
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Feb 19, 2009
I am used to using the binding database tools in vb.net for sql server, are there these same tools for using a mysql database?
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Aug 1, 2011
I'm fairly new to VB.net and WPF (and programming in general), so please bear with me. I'm attempting to write a useful database app for my business as a learning project. I did a draft in WinForms, referring to the (very good) Murach book, but am now trying to re-write it with a WPF UI and cleaner code.
I think I understand the basics of WPF binding, but am tearing my hair out trying to find a simple way of binding to parent details - which I would have thought was a very basic scenario, but I can't find anything on it. For example, let's say I havea 'Customers' table with CustomerID, Name, various contact details and then foreign keys CityID and GroupID;
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And then just moving to the first record (as there will only be one). Is this a normal method of looking up a customer? I could also use this method by getting the foreign keys from my customer row and filling the different tables in the dataset all using parameterised queries, then just binding to each table separately - but again, seems very messy.
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Feb 17, 2011
In a test project I was able to add a datasource to a form, bind it to the datagridview and manipulate it as needed. Now moving forward to the actual project, is it possible to add the datasource to a class and sort through the data for use in the class?[url]...
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Feb 1, 2010
I am using System.Data.SQLite with VB 2010 to bind to a SQLite database. Everything works just as it did in VB2005. I drug a table from the DataSources Window onto the form and automatically generated the binding navigator, table adapters, etc. I can preview data in the TableAdapter but when I run the app no data is read into the grid. The same thing happens with the details view. The BindingNavigator shows 0 of 0 records. There are 27 records visible when I preview the data. The code follows:
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Apr 13, 2011
I've read jmcilhinney's code bank submission on retrieving and saving database data and have been using this a lot.
What i would like to know now is how/if i should be using the built in VS method of databinding with bindingsource, bindingnavigator and dataset controls etc for anything?
What can i do better with this method and what are the limitations?
Also, i'm using a function that reads an ini file to set the path in the connection string, can i still do this using the data binding method?
I've read a fair bit on using databases with VB but the above is still a bit confusing to me.
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Jul 10, 2010
I have one textbox at form named "Ord ID". I have bind database table with datagridview control and now on load event data is displaying correctly. In Datagridview there is one column which is checkbox type, suppose at datagrid there are 10 records displaying, and I have tick 6 checkbox for 6 records, so when I press add button then the value exist in textbox automatically comes to only six records of Datagridview column named "StatusID".
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