Matching VB2008 / VB2010 OleDbTypes With SQL Data Types?
Sep 16, 2010
Does anyone have a list of OleDBTypes and how they match up with MS Access and SQL Server Data types. I would like this to be able to better write code for my parameter collections. Plus when looking at all the options availible with intellisense when programming in vb2008 v.s. SQL datatypes, there are some not so obvious choices.Here is the list I get from VB2008 using Intellisense:
OleDb.OleDbType.BigInt
OleDb.OleDbType.Binary
OleDb.OleDbType.Boolean
[code]....
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Oct 22, 2010
I have used VB (versions 2 - 6) through many years; however, I am crash-course training myself into the VB2008 / VB2010 world kicking a screaming. I would like suggestions as to what SQL database access method should I focus more on in my learning process without making me feel that I'm a million years behind. I know I have WinForms where I can create a datasourse and drag / drop fields or tables on a form to create a grid (not really what I'm looking for).
My trouble isn't so much designing the form but in how I access the database. Theres XML, LINQ to SQL, ADO.NET, and many other methods. Not only do I need to grasp these methods quickly but I also need to know what type of projects I should create. What I mean is...I was thinking that I would design a WinForm app; however, I see that there are WPF apps and others to chose from. This is getting deep. I know it depends on the project that I'm working on. My plans are to write an app based off of either an SQL Express 2008 or SQL Server 2008 database. This first app will be standalone for now but may later become multi-user. I know I'm far behind on my learning curve coming from VB6. I have read a bit on VB2005 / 2008 / 2010. I own
both VB2008 and VB2010. I use VB2008 at work. I know ADO.NET is still alive but by what I read online, it's a dying method and is only kept for backward compatibility. XML and LINQ to SQL and other methods are all pretty new to me.
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Jun 22, 2010
what differences between vb2008 and vb2010.(OOP)
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Aug 30, 2010
Before anything else I did try to use the search option, but it continuously failed to load.Most I have figured out but I am unsure of how to spawn Types and Sockets.
Example:
VB6 -
Dim TypeArray() As ThisType
Type ThisType
[code]....
well that was easy! But it has me stumped in vb.net, I hear using system.net.socket is the most efficient way to use sockets so I would like to spawn those.I need to be able to control which index is assigned to which socket, as each index will refer to certain variables.
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Nov 26, 2011
I see no options to change. I see the HTML icon but it does not seem to activate. OPtion at the bottom HAS CODE is checked. This code worked in VB2008 but I get the indicated error in VB 2010. I would like to understand what changed.
[Code]....
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Oct 4, 2010
I created a windows form in VB 2010 and I am trying to view it in 2008, but I get the error message "The selected file is a solution file, but was created by a newer version of this application and cannot be opened".
Is there anyway I can re-save the 2010 project(similar to Microsoft word) in order to be able to open in older version?
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May 28, 2010
I own a copy of vb2005 professional. I need to migrate a vb6 project to vb.net Is there any difference in terms of effort to migrating to these editions of vb.net
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Oct 20, 2011
How to convert VB2010 Express proj to VB2008
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Feb 25, 2011
Is there any advantage to using the VB2010 express version versus the VB2008 express version? Can they be installed side by side or will VB2010 express replace VB2008? I have no issues with the 2008 version, so I don't know if installing the 2010 version would be of any advantage.
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Jun 22, 2010
I have a specialized string dictionary of (string, string) (_RulesAndTheirDescriptions) that contains the name (key) and description (value) of methods in a given class. I currently do the following query to search for a match on the key or value and then bind that to a grid.
[Code]...
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May 11, 2009
I am trying to match between two datasets. Based on some predefined criteria the matched items are stored into a datatable. I am using the code below: [code]I am not sure whether there are more effective way to store the matched items in a new datatable since the method I used here requires three loops which is a lot of processing time.
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Mar 16, 2012
In VB.NET I would like to create a complicated data structure with multiple types of data stored in an array like format (see below). I am trying to create a data structure that would look something like this: [Name; xLoc; yLoc; zLoc; [Jagged Array]] Note: Name needs to be dimensioned as a string, xLoc and so forth as integers. The Jagged Array would look like this:
[Code]...
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Feb 26, 2010
I have a SQL 2008 Express DB and am trying to run an insert query. But every time I run the query I get the UnresolvalbeObjectException.
Dim db = Simple.Data.Database.OpenConnection("Server=localhostSQLExpress,Database=Foo;Trusted_Connection=True;")
Dim item as new with {.Name = "SMITH",
[code].....
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Nov 4, 2011
asking a newbie question. Where is the format properties for changing the data display format in VB2010 Express
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Mar 16, 2012
im trying to save data (0 or 1) from vb2010 to SQL2008.
How can I do it inside vb2010? In class or form? which 1 is recommended?
The following is I write in form class:
If Trim(CChar(cElectrical)) = CheckState.Checked Then
loDataAdpr.InsertCommand.Parameters.Add("@scopee", OleDbType.Char).Value = "1"
Else
loDataAdpr.InsertCommand.Parameters.Add("@scopee", OleDbType.Char).Value = "0"
End If
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Apr 3, 2012
im trying to save my inserted data from vb2010 to sql db.
This is my New Contact form interface:
This is the message after i inserted all fields:
My "add" in clsDbConnect:
Public Sub AddContactRecord(ByVal cClientName As String, ByVal cCompany As String, _
ByVal cAddress As String, ByVal cFax As String, ByVal cPhone As String, _
[Code].....
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Dec 28, 2010
I have used a data repeater and linked it with the data source. The program lists all the names of clients from the database with an ID number and also a URL.My first question is how can i make the url that is displayed as a link label, link to the default browser when clicked. I normally use the Shell("c:/program files/internet explorer/iexplore.exe "URL HERE") command but i'm not sure how to make this work with the data repeater?
My second question is to do with starting services, i need to take the ID number from the current data repeater record and then place it within a service name, for example if the service was callled Client_** the two ** represent the client ID. This then needs to start the service when button is clicked on the current record on the data repeater.
My third and final question is how to query a field in a current record of a data repeater, for example if i wanted to query a field called ID for that current record shown, is there a function i need to use to call the information?
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May 1, 2012
I have a combobox that I am populating with the contents of a dataset (from an access database). The field that it is showing has lots of values that repeat. I want to remove the repeats of the data so that only unique records are shown in the combo box. I imagine this can be done with the SQL for the data adaptor? I tried: "SELECT type FROM products GROUP BY type" and "SELECT DISTINCT type FROM products" but both still showed the repeating records.
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Mar 11, 2010
I am presently using VB2010 to develop charting application. I have noticed that whent he applications are developed on my hp dv7-2270us notebook and stored on an external harddrive, if these same applications are then opened on my dell latitude d610, i will recieve a corrupted external harddrive error. Usually this can be repaired with check disk.
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May 1, 2011
I am using vb2010 and the like @lastname +'%' to try and create a search query. It seems to work until I try the test query which brings up nothing within the test query window. Sometimes it even seems to wipe out the data I have put in for testing. I did get it to work once in one project.
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Sep 24, 2011
Let me preface this by saying I'm VERY limited in my programming knowledge/experience using any language. I mean I have extremely basic capabilities and don't quite understand this stuff inside and out like most of you do.Anyway, I'm trying to code a fantasy football draft program in VB 2010 that utilizes the MS Internet Transfer Control 6.0. It will retrieve the HTML from a website, say ESPN, and parse the data into player names, rankings, and other stats. Should all be simple strings/sub-strings. It will then populate a DataGridView control so that each row in the DGV has the player's name, ranking, projections for the season, etc. After this has been populated, the program will be designed to allow me to draft players and assign them to the various teams automatically. I am the commissioner and we do an off-line draft, so I will just make picks for everyone and submit them online later.
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Jan 16, 2009
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 appe
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May 25, 2011
I have the following code that needs to connect to my four spreadsheets for FileName(). I havent built the loop yet for the other three, but I am so used to working with a variable. Is this the best way (datatable) to get a single cell from a spreadsheet and if so how do I view the data once it is in the datatable? Ideally I would like myDataArray(3) to hold the 4 cell values. Please help. I am stuck. I want to be able to get the cell value $K2 form each sheet without invoking Excel. I think I am close, but dont know how to get the data from the table. These four cell values will be displayed and then emailed to our Country Director.
[code]...
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Aug 7, 2010
SQL Server has a Data Type of "Float". Visual Studio has a Data Type of "Decimal". In other words, if I have a variable in a VB.Net app that is defined as a "Decimal" ...can I move that value into a SQL Server Data Table column defined as a "Float"?
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Jun 1, 2011
I have been trying for days now how to create a process to the user to easily create a connection to any installed data types they have installed. I have found an example right inside vb2008. I never use this because I code my own connections, but this would be real nice if I could include it or duplicate it.
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Mar 26, 2011
I'm trying to call a C++ DLL from inside VB.NET and am having difficulty with the data types (I think), I understand VB.NET far more than I do C++...I think my main problem is differing data types and I don't understand enough C++?In C++ the DLL is called (I don't have the source for the DLL which would solve my problem, I only have a sample project written in C++) by this;
_InitSensor = (InitSensor)GetProcAddress(m_hInstLibrary, "InitSensor");
_FreeSensor = (FreeSensor)GetProcAddress(m_hInstLibrary, "FreeSensor");
_ReadTEMPsh10 = (ReadTEMPsh10)GetProcAddress(m_hInstLibrary, "ReadTEMPsh10");
_ReadType=(ReadType)GetProcAddress(m_hInstLibrary,"ReadType");
(Variables Declared Previously in other file like this;)
typedef char* (*InitSensor)(char ICType);
typedef void (*FreeSensor)();
typedef double* (*ReadTEMPsh10)(BYTE n);
typedef double (*ReadType)(BYTE address);
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Feb 25, 2010
I use Philip's MfRc500.dll for communicating with RFID chips. It contains a function for reading data, which is defined like this:[code]The second parameter in function Mf500PiccRead can returns "16 byte data block", so my long data type is too small. If I use byte() instead of long, then i get ExecutionEngineException Exception.
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Jul 14, 2010
I'm torn between using UniqueIdentifiers(UID) or some other field as my primary key for my new web app. I have two tables. I need to be able to find the UID on one record in Table1 and put that UID in a new record in Table2. I also need to be able to create a brand new UID for the new record in Table2 on the fly.
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Feb 25, 2011
Visual Basic 2010 (Express). If I take a string from a textbox and assign it to an integer variable, I'm under the impression that you're supposed to use CInt to explicitly convert the contents to an integer.intMyCount = CInt(txtUserInput.Text)However, if I don't do that, it still seems to work. Similarly, if I have an integer and concatenate it into a label's text property, it still works: lblResults.Text = intMyCount & " number of times."
rather than using intMyCount.ToString.Why does it work? Is VB doing implicit conversions when possible? Are there examples where not explicitly converting with .ToString or using CInt would cause unexpected results?
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Dec 25, 2009
I am trying to wrap a c++ dll and can use system.runtime.interopservices.dllimport and declare function to call functions from the dll. But how do i wrap the data types and everything else?
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