VS 2010 Datatype Size On 64-bit Systems?
Jun 17, 2011
I'm still using ye ancient 32-bit machine with ye olde XP.Currently I'm writing some code to add binary content to files, and I need to know, if the same code can be applied on 64-bit systems.For example an integer variable added to a binary file with:
BinaryStream.Write(SomeNumberDeclaredAsInteger)
can be safely loaded with
MyInteger = BinaryStream.ReadInt32
on my system, but is this also the case on 64-bit systems or should I truncate it to Int32 before writing it to file?
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Jun 1, 2009
with linq to sql(dbml file), how to get the size of a datatype?
for an example, varchar(50), how to get that 50?
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Mar 8, 2010
anything wrong with using datatype object and determine datatype in class property? I have a typed dataset and it has several integers columns that are null in the db. and when I make a call it throws exception.is there anythign wrong with setting it as object in my dataset.. changing the throw exception property to Nothing and passing it to my property as integer?
for each row in myDS.DataTable
cRate.CustID = row.CustID
next row
and in my class
Public Property CustID() As Integer
Get
Return _custID[code].............
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Apr 30, 2002
I'm using a 3rd party chart COM object (National Instruments CW graph) to plot data versus elapsed time.The x value needs to be a VB6 equivalent Date type which is a .NET DateTime datatype.What I need is a way to convert a TimeSpan datatype to a DateTime datatype.
Dim testTime as System.DateTime 'date
Dim plotTime as System.DateTime 'date
Dim elapsedTime as System.TimeSpan[code].....
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Jan 15, 2012
I have a database in mysql. The column in table is of datatype time(0)
Similarly I have a control datetimepicker in vb.net I have assigned format property as custom to the control and the CustomFormat property as HH:mm:ss tt so that it can just provide the time. I dont want the date to be in it.
Issue comes when I try to retrieve the value from database I get an error as Converion of type 'Timespan' to type 'Date' is not valid
Try
Dim myCommand As SqlCommand
myCommand = New SqlCommand("select * from [HMS].[dbo].[DoctorSchedule] where DoctorID='" & txtDoctorID.Text & "'", Connection)
[Code].....
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Jan 2, 2011
I am working on a produce inventory database in my VB Express program.I have a form on the bottom and a spreadsheet at the top. I want to enter all the data in the form and have that data automatically transferred as a group to the spreadshet in the upper part of the page when I press a button.I know that there's an insert function.I set it up correctly. The problem is that I have to convert the textbox, which contain string data, to the datatype used in the database spreadsheet.HOw do I use CAST or do this?Here's the function I am using:
Me.TableAdapterManager.InventoryTableAdapter.Insert(IDTextBox.Text, fruitName, unitprice, unitsize, unitIn, unitTransit, unitOut)
Evernything is a string cause the data is coming from a textbox, I need to convert it to the datatypes used in the database.Also how do I use the CAST and Convert functions
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Dec 20, 2010
I have a large text file that I am going to be parsing. Each line can contain a variety of Specific Variables.
[Code]...
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Jul 16, 2010
I am wondering if datatype can be passed as a parameter in a function..
for example..
Private Function CreateDT(ByVal myDT As DataTable, ByVal myColName As String As DataTable
(
myDT.Columns.Add(myColName, GetType(myColDataType))
)
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May 21, 2011
I'm using code from here - [URL]. And I'm getting the old
A call to PInvoke function 'EliteSwitch!EliteSwitch.MouseHook::CallNextHookEx' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.
Error on this line
Return CallNextHookEx(MouseHook, nCode, wParam, lParam)
I've tried changing variable types but I can't get it.
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Jul 21, 2011
its been a while since i was here... it's nice to be back... anyway, i was wondering how to upload a jpeg picture to a blob datatype field in MYSQL. i know i could just put the picture path in a varchar type field and just place the picture somewhere locally and retrieve it programatically. but my project does not require me to do so.
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Jun 1, 2010
i've created a pluginframework and i have some problems with it. At first you should know that the framework is only an interface designed like this:
[code]...
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Apr 16, 2012
I have designed an Application tracking details and I have deployed it. The records are updating the way I need. I want the same application to be used in other three different systems which do not have MS Visual Studio. How can I do it ? Is it enough that I create a similar table in the path I have designed in the other systems and run the Application ?
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Jan 17, 2010
that in the IDE on 64 bit systems, that the Load Event swallows exceptions. "Any error in the Load event will cause the event to end and the Form to be shown." J Wein@MSDN
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May 12, 2010
I would like to close my program based on the system time. I have stuck a timer on my form and I want to set my timer to my systems time. if the timer = "8:00" pm or timer = 20:00 hrs then END Does any one have the code on this? If I could do it without the timer as in to check the systems time = 8:00 pm or 20:00 hrs then End
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Apr 6, 2009
I've just developed my product, and I am wondering...How can I tell what operating systems it can run on,Obviously it works on Windows XP SP3, I assume Windows XP Home Edition will be fine also (32 BIT)
Will it work on Windows ME, Windows NT, Windows Vista?
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Sep 29, 2009
I just finished my program which has a refference to mysql.data thats a dll right? When i build the application its not working on my friend's computer why?...probably cause this dll is missing. (net framework matches its not the prob) How can make it work? do i place the dll at the same location as the executable ?where do i find this dll? I dont want to publish my application just the executable and some extra files probably no need to install on another system to work.
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Dec 27, 2009
I have an application I made and I created a Setup Project so I can install it on other systems and it almost works perfectly. It doesn't install over older versions even though I have that option set to True. So I decided to look into publishing to a website since it seems you can have the application look for new updates which is what I want since I'm still in testing and the source code is changing frequently. I found the Build -> Publish Application option but it won't upload to the site. Also, is this the right approach to accomplishing what I want?
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Jun 4, 2009
I am coding a reversi game for my computer programming class and I need help with something. I have a list of all the systems.drawing.graphics brushes in a Combobox and I want the user to be able to pick their color. So I have the list of colors I just need to make it so I can set the color the user picks to the brush that is for his team I guess you would say.
[Code]...
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Jun 18, 2011
I was wondering how I would make a program identify the operating system?
--EDIT basically so that the program can access a certain part of a file system no matter what the user directory is called?
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Sep 8, 2011
A few years ago I created an application using VB6. It works fine on all OS but considering vb6 is no longer supported and it lacks lots of features, I've decided to upgrade to VB.NET. Plus I also want my software to run on all future OS correctly. I was using the ADODC control on many of my forms. In VB.NET, if I go to Tools > Choose Toolbox Items, I see ADODC under the .NET framework components tab. Can I still use this or is it outdated/no longer supported? If I use it, will my software work on 32bits and 64bits systems? [code]But in VB.NET when I write this I get the error As Any is not supported in Declare statements. How should I write this in VB.NET?
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May 18, 2011
i was wondering how far back in the windows operating systems visual basic builds would run. like the exe you build at the end will it work on old windows 95 systems and would it work on other operating systems such as linux apple ect..
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Oct 25, 2011
I have an app that calls a DLL, and passes a string to it (by reference). The DLL then fills the string and passes it back to the app. Before calling the DLL, the string must be sized correctly to fit the data the DLL is going to pass it. In the past (using VB.NET 2003) I just initialized the string with the correct number of spaces. This always seemed silly to me and I'm wondering if, in VB.NET 2010, there is a way to do this using a number to define the size?
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Jun 8, 2011
Now all went well about from using the structure correctly. The working of the structure was perfect. How ever i missed Two important issues. The structure needed a fixed size of 10 items (9 in programming terms starting from 0) And also out of the 5 items allowed to be chosen as one of the member types for the structure a limit of 5 items of that particular type.
[Code]...
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May 7, 2009
I am trying to build an IVR and hook it up to my website, what are the different (inexpensive) ways that I can do it.
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Apr 23, 2012
How to customize a DateTimePicker to show dates in other calendars systems ?
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Jun 3, 2010
Assignment Overview: Background: You have been approached by Learning for Life a locally based tuition company that teaches a small amount of courses (at least four) to a minimal amount of students (five to ten students per course). They currently utilise a paper based system and are looking to implement a computer based one as it has become difficult to store all the relevant information.
They are looking to implement two various systems, one to keep track of illnesses and the other as an enrolment system, keeping track of what courses the students are actually taking part in.
System Notes:
-Each student can only attend one course at a time
-There are only 6 lecturers in total
-There is approximately four to six courses running at one time
-There is normally five to ten students on each course
-They have included a system description as to the layout of the database required for the enrolments segment
-The enrolments program must have password based security where each user has a different password
Deliverables:
2 fully functional programs (fully annotated)
Class diagram
Report with the following headings:
-Introduction
-Inheritance
-Association
-Aggregation
-Evaluation of OO in SE
-Tasks
[CODE]...
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Oct 30, 2009
I have web service which updates MS access database. Im using OleDB for Updating MS Access database
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Oct 16, 2009
I developed a Visual Basic program in VS2005 that uses SQL2005 on a 32bit system, which runs perfectly on 32bit systems using Click Once deployment, but whenever I try to load or run same program on any 64bit system, it does not load or run. What do I need to do to make the program run on 64bit systems.
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Dec 1, 2009
actually i have to develop a project to monitor EDI/Edifact data that are send between different EPR systems.Different erp systems means also different database systems. So i have to develop an app to monitor up to 5 tables.These tables can be stored in SQL Server, Oracle, MySQL or DB2. What kind of data access do i have to use ? ODBC ? ADO.NET ?? I actually don't have an idea how to handle this.In the app (i have to write) there should be something like a "DB Configuration for EDI" and there i want to configure if it is SQL, MySQL or what ever that i have to access.In the different Databases all the tables have the same name (means in SQL there is a table called Actlog and in Mysql also a table called Actlog)How can i write my app that it is DB independent ??
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Mar 27, 2011
how can i use value (23,32) in sql column datatype int how can i use comma in column data type int
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