VS 2010 Using VS2010 Express / Best Data Type?
Dec 16, 2010
I'm working on a small project - a database program to track and log the progress of some experiments. I'm using VB 2010 Express, and I'm pretty much just learning as I go. I'm getting ready to learn about the data models available, and am having trouble navigating the info I find.Is it best to develop the data within the SQL CE environment, or does that require the end-user to download additional libraries/programs? Is there a better data model for my needs (not much complex data processing, but a sizable amount of records/tables)?
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Sep 28, 2011
When Visual Studio 2010 Express Edition starts , there is always a message (a splash screen or what so ever) saying : "Use of this software should be limited to evaluation purposes only" . What does this mean ? We must not share our programs (made with VS2010 Express Edition) not even when they are free ?
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Feb 17, 2012
I have a bunch of Excel files full of research data. Everything is strait forward: rows of research categories and columns of research parameters. I want to create a simple search form that allows opening any of the spread sheets that contains the type of data that I specify. For example, I would choose a parameter
[Code]...
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Apr 24, 2008
What is the best way to set the default value for 'bit' or boolean data types in SQL express? I am using the data base explorer in VB Express 2008 and the only way I seem to be able to do it is by using ((0)) for false and ((1)) for true.
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Nov 19, 2010
What are some easy and simple unit testing frameworks to use with Visual Studio 2010 Express vb.net?
Are there any good tutorials geared towards this?
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Apr 21, 2010
I have VS2010 and have targeted Framework 2.0 to work with SQL Server 2000 which works great. The problem seems to be when I go to my release folder, right mouse click on my test.exe file and click on Compatibility, then select 'Run this program in compatibility mode for' and then select Windows 2000 from the combobox. i get this error upon execution of text.exe:
The type initializer for 'WindowsApplication1.Module1' threw an exception.System.TypeInitializationException: The type initializer for 'System.Data.SqlClient.SqlConnection' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.Data.SqlClient.SqlConnectionFactory' threw an exception. ---> System.TypeInitializationException: The type initializer for 'System.Data.SqlClient.SqlPerformanceCounters' threw an exception. ---> System.PlatformNotSupportedException:
This operation is only supported on Windows 2000 SP3 or later operating systems.
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May 6, 2010
I have been trying to install VB2010 Express, which directs me to uninstall VS2010 Beta. I have been primarily successful in this, but I keep getting error 1402, as follows:Form "Microsoft Visual Studio 2010 Professional Beta 2 Setup - Update Page":
Uninstalling Components:
[completed - check] Microsoft Office Development Tools for Visual Studio 2010 (x64)
[completed - check] Microsoft Visual Studio 2010 Professional Beta 2
[pending - double bar] Microsoft Visual Studio Macro Tools
[code]....
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Mar 28, 2011
I have an application that will not load unless my local SQL Server is running on an Vista Home Premium machine. This started after a .Net 1 to .Net 4 conversion. I am using a sub main sub that is not being called (msgbox is not fired when entering the app), however, I see the app through taskmgr with increasing memory usage, but then the app is removed from the list. By design, if the program cannot locate a SQL Server a form pops up with a connection box to locate the SQL Server for the app. How it determines if it has a valid connection is the program looks for a connection string in the registry, then attempts to connect to it, however, none of this code executes because of the failure to enter into the sub main.The two machines I have tried the 32 bit app on
XP Pro: Failed / Using SQL Server 2008 Express
Windows 2003 Server: Works / Using SQL Server 2008 Developer
Both machines have .Net 4 Client Profile with Extended?
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May 11, 2011
I am a co-op student learning vb.net and I have a project which retrieves data from an xml file within the program (based on selections made from combo boxes) and calculates and displays prices.[code]I have one combobox that loads data from the Processes section just fine, but then another uses the same method and gets an "IndexOutOfRange" error or "Column AB12345Bed_Size Not Found" even though I am using the same method for both. For "Processes" I am using DataView.Sort on "<12345Material_Process>" which reflects the selecteditem in the combobox. The program retrieves that row without a problem. [code]
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Jan 19, 2012
I wish to know what location does the "|Data Directory|" in "|Data Directory|XYZ.sdf" that shows in the connection string when I create a dataConnection using the wizard in VB 2010 Express. Is it the Application's directory in Program Files or is it the AppData folder of the client computer.If it is the Application Directory in Program Files then the client user wont be able to write to the database without Admin rights. If so how do I make a dataConnection to a file in the AppData folder using the new data connection wizard.
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Aug 2, 2010
I'm trying to print from VB Express but it seems to be so difficult. I tried the printform component only to see the end result being blurred. I have data in one table (which will be used as the header) and data in another table (the body) which I need to print out. Seeing that the express edition does not have any reporting capabilities, I turned to several other open-source projects providing "free" reporting tools, such as MyNeoReport. MyNeoReport is acclaimed to be so good but the developer lacks a detailed tutorial for it. And the tutorial's I did manage to find are all in C#. Not helping.
How do I go about printing the data? The design is simple. Extract the company information from table A to display as the header, extract the body from table B to display as the results. I also need to calculate the totals of the body and add it to the footer or bottom of the report body. I can't seem to find any relating forums or questions similar to mine on any forum. Currently on the form, I've got a few labels, textboxes and a listview. I know I need to load the filtered data into a data grid at some point.
Is it possible to give me a detailed example of how to do this? I'm really frustrated with this whole printing thing. I don't have the finances to buy these other reporting products and the one's claimed to be free all comes with a price-tag in the small print.
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Jan 7, 2011
I have started a form application using visual studio 2010 express, vb programming. I'm using Access as my database.My goal is to have ComboBox1 display a ProjectID and ComboBox2 display a TestNumber. Once the Test Number is selected I want my textboxes in the form to display fields from the row that the selected Test Number is in.I have 2 tables set up right now "Projects" and "TestData". The "Projects" table has a [ProjectID] field, the remaining fields are just misc. project data. The "TestData" table also has the [ProjectID] field, and then the [TestNumber] field, then the remaining fields are misc. data.
Filling [ProjectID] in textbox1 is easy, in the properties I select DataSource from the Projects table, display [ProjectID] field. Where I'm having troubles is ComboBox2 displaying the TestNumber from the other "TestData" table. If I select that field, it fills the ComboBox with EVERY TestNumber there is. So for Project 1 there is a test 1... over 500 projects, that combobox lists 500 Test 1's, no way to tell what project it belongs to...How do I make ComboBox2 only display Test Numbers that pertain to the Project number selected in ComboBox1?Using this code I can get it to work:
Dim ProjectNo, SQLString As String
Dim dtTableData As New DataTable()
Dim dbDataAdapter As OleDbDataAdapter
[code]....
I also imported system.data.oledb Problem with this code is it will only filter data in ComboBox 2 but when you make your selection from ComboBox2 it won't activate the row so none of my databinding textboxes fill anymore. Before the code/query is ran it fills up the textboxes perfectly after every selection I just have no idea what project that report number belongs to because the whole field is displayed in the dropdown. I can fill the form with ComboBoxes and they display the corresponding row data because I use a "datasource" instead of textbox "databindings" but I don't want to use 20 comboboxes as my entry form...
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Jan 18, 2012
I've been reaserching for 3 hours on how to save data and retrieve data in mysql database I am using vb.net 2010 it would be nice if someone will post some codes or links
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May 26, 2012
I just installed VisualStudio 2010 Express and Windows phone SDK 7.1. I downloaded Phonegap 1.4 and added the PhoneGapStarter to the projectTemplates folder. When I hit new project I get the Phonegap icon. When I double click it to start a new project I get this error:
[Code]...
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Sep 5, 2011
I have written lots of code with the ADO Library in VB Excel and previous versions of Visual Basic. With the dissappearance of the recordset object, how do we perform data manipulation with an attached Access Database? It seems things could be a lot easier, and less complicated by now, however, the best methods appear to currently remain ellusive.
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Jun 20, 2010
I need to connect to an MySQL database in my VB.NET application (VB 2010 Express). When I attempt to use the Data Sources wizard to establish the connection, it does not provide an ODBC data source. I'm using Add New Data Source/Database/DataSet/New Connection which shows the Add Connection dialog. The only options it gives me for data sources are Access & SQL Server and the OLEDB data provider. It does not appear to give me the option of adding a new data source provider. Attached is an image of my current Change Data Source dialog. Where do I get the ODBC data source provider and how do I install it into Visual Studio?
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Jan 17, 2012
Here is the code snippet
objCommand.CommandText = "UPDATE tblCustomers SET weight= @weight, height= @height WHERE id=@id "
What i want to do is the following:
I have a form and i want,by clicking the appropriate button, to update the height and weight values which have the specified primary key 'id'.
The primary key 'id' is of type IDENTITY.The problem is that the above code does not work. It says Must declare the scalar variable "@id".
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Feb 29, 2012
I am trying to make a user account SQL database work with Visual Basic 2008 Express for login purposes, i.e. usernames & passwords. Plan is to host this server so people can login to use the the application and verify they have a valid account. I would like to host all the account information in SQL due to the possiblity of hundreds of users at any given time. I also need the ability to add data to the database for users registering for the first time. The SQL server will need to be able to access the SQL Server databases remote via WAN.
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Mar 13, 2011
I know how to browse page witht he browser control etc, but i need to know how to grab data from within the html.
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Feb 26, 2012
For each column in data table i want to add parameter with same data type as column data type. But looks it's not that simple.
Dim cmd As New SqlCommand
Dim dType As New System.Data.SqlDbType
For Each cl As DataColumn In DataTable1.Columns
[CODE]...
How can I do this?
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Jul 15, 2010
I have been reading about ADO, SQL, datasets, data adapters etc and have gone into information overload. My next step is to create a simple data file of my own that I can manipulate, update, sort etc in VB Express. Do I need another piece of software? I read about MySQL, which I understand is primarily used to access databases on the net, but can that be used to create a simple local data file on my PC? Can you simply hard code something in VB Express?
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Aug 22, 2011
im trying to use this select statement on a OLEDB database and im am getting a data type mismatch.[code]its not just this particular select statement. its any where the where clause is dependant. in the past i have got round this by passing in a parameter but its not my prefered method and id really rather not pass in two dates as parameters.i have looked in to this and found some thing that said that in oledb select commands you need to CONVERT the dates however when i trid that i got an error thar says somthing like CONVERT is not a recognised function.
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Sep 2, 2011
I've spent a substantial amount of time trying to figure this out, but I keep getting the same error
A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll
A first chance exception of type 'System.NullReferenceException' occurred in project1.exe
This happens when I try to use the DataReader.my code is
Public Function Identification() As List(Of Integer)
Dim returnIndex As New List(Of Integer)
Dim dbCount As String = "SELECT Bookingid FROM bookdetail WHERE Date =" & getCurrentTimeString() & " 12:00:00 a.m."
Dim count As Integer = 0
[code]....
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Jun 11, 2012
I need to create a function which have either 1 parameter with a string as data type or 2 parameters with double as data type.Something like the substring method.
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Jan 19, 2012
I have data that I want to store in some type of variable where I can easily access when needed. For example I have:
google.com -> This is a cool website.
yahoo.com -> News website
gmail.com -> Mail website
I want to be able to store those in some type of group so if I go like:
get data of google.com without going through a loop.
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Oct 16, 2010
I tried to start using VB 2010 Express with a program I originally developed with VB 2005 Express that I moved to VB 2008 Express successfully a couple years ago. It uses a database file (*.mdf) that is on the computer ( not out on a server). When attempt to run the program in debug mode, I get the following error "An attempt to attach an auto-named database for file C:Documents and SettingsTomMy DocumentsQuizzing StuffQuestion Database 2010QuizQuest ionGameQuizQuestionGameinReleaseQuizQuestionDB.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share."
I first made a copy of the entire project folder that was working in VB 2008 Express and gave it a different name. In VB2010 I opened the project in the copied folder and it said it successfully converted the project. I am able to open the Data Source inthe Designer and see the database structure as I expect. I think the project is still using SQL Server 2005 Express (because it is what is checked in the list of prerequisites on the Publish tab).
Note, I have programmed off and on for many years, but fairly new to using databases and SQL Server.
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Feb 29, 2012
Here is the scoop: I am trying to make a user account SQL database work with Visual Basic 2008 Express for login purposes, i.e. usernames & passwords. Plan is to host this server so people can login to use the the application and verify they have a valid account. I would like to host all the account information in SQL due to the possiblity of hundreds of users at any given time. I also need the ability to add data to the database for users registering for the first time. The SQL server will need to be able to access the SQL Server databases remote via WAN.
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Jan 21, 2011
I am trying to re write a VB6 program using MS Access, many years ago, using VB 2010 express and SQL server 2008 R2 Express. I have a database with several tables, which I created using the designer. I am able to connect to the database and select data and display it in textboxes etc in vb code. What I have not been able to in code is to INSERT rows DELETE rows or UPDATE any data in the tables. I can do any of these operations using the Query Designer, but I want to do it in code. I can post some code if necessiary, but I thought it might just be some property that I had not set in the designer.
[Code]...
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May 12, 2010
Is VB Express 2010 slower to compile and run that older versions of VB Express? I've installed it this weekend and it seems a little sluggish on my quad core computer with 1 gig of RAM. I have VB Express 2005 installed for my students at school and it seems to fly just fine. Those school computers are older P4s with 512k of RAM.
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Dec 27, 2010
I'v designed a ms access database table with one field having Datetime datatype. I can Insert data into it from vb.net front end by trns_dt DateTime.Now.DateBut when I fetch records from the tableand assign the dataset datasource as da, it shows datatype mismatch error.
daleDbDataAdapter("SelectDaily_Transactiondtp_from_dt.value dtp_To.value con)
dsDataSet
[code].....
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