I have a TCPListener demo setup and working. The demo program has been supplied by Bill Chung, here:[URL]..the Listener uses a DataGrid to output whatever data is received but currently it doesnt store it.
Ive created a simple database and linked it to my project. what i need help with is getting the data that is currently outputted in the DataGrid to be stored into my DB table.
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i have a dev express grid maken of 3 column. i wolud my 3th column is a button and each of this button open a different file (path file is written in the second colum and in the first i have an image).
i have a class in which i save my elemnt named DisplayIstanza and is maken in this way:
public class DisplayMessage
{
public Image Img { get; set; }
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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
View 5 RepliesI'm trying to create a simple Data Grid that will automatically save changes. So far I have a data grid connected to a MS Access 2007 Database that reads the data. I can create new fields in the Data Grid, but I need to program to save the data automatically to the database on update (or on close).
View 6 RepliesI am trying to insert data into a grid with 3 columns, in VB6 you could select a grid's column number, something like this :
grid1.column=3
grid1.row=2
grid1.text ="hello"
how do you select the column in VB2008 as i can't see any similar command ?
how to insert new row in the last row have data in data grid view
View 1 RepliesI 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.
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.
View 9 RepliesI'm quite new into the programming game, I've been working on this program for a few weeks now, and its coming along, but the method I searched for entering new rows of data into my table doesn't seem to update my tables after I try entering data. I have a feeling it may be something very simple that i am over looking.
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Handles Button4.Click
Dim conn As New SqlConnection("my datasource")
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how to code for the save button in vb.net datagrid view by using insert into sql and update sql statements (it should be able to insert & update the data grid and save the changes) when the save button is clicked .
View 2 RepliesI 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.
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It seems the most obvious thing, but I just can't work out how to get the length of bytes sent over a network using a TCPClient and TCPListener? This is my code so far:
'Must listen on correct port- must be same as port client wants to connect on.
Const portNumber As Integer = 9999
Dim tcpListener As New TcpListener(IPAddress.Parse("192.168.2.7"), portNumber)
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I need to get the length of the networkstream to set the size of the array of bytes I'm going to read the data into. But the networkStream.length is unsupported and does not work and throws an Notsupportedexception.
The only other way I can think of is to send the size of the data before sending the data, but this seems the long way round.
give me the source code to add database connectivity in VB2010 express through ADO.Net. Including all the commands to add, update, delete, retrieve and modify the database fields. It would be really helpful if anyone can provide me with a small prototype working model with the source code.
View 1 RepliesI am starting programming entity framework by julie lerman. all her examples are in c#, which i do not use. when i right click on the edmx model in solution explorer (vb2010 express), i do not get an 'open with' option, only 'open' which italready is, in design mode.
View 2 RepliesI create a project.However, after I close VB2010 express and then open again I can not find or open my project.Futhermore, I need to zip a project and send it.I am doing something wrong in process of saving. I do not know what?
View 2 Replieswrote a program which works perfectly fine on the Win7 64 bit machine I wrote it on. Tried to run it over server and previous versions of windows (all 32 bit) and got an error (see screenshot attached) In some googling looked like there was an export function I missed so I've done: -Tools -> Options -> Projects and Solutions -> Check "Show Advanced Build Configurations" box -Project -> project properties -> Compile -> Advanced Compile -> and I've read there is something that should be changed here (the target framework?)
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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?
How to convert VB2010 Express proj to VB2008
View 6 Replies(pardon me for re-using someone else's wording - but it seems this question comes up in each NEW version of the IDE) Does anyone know how to disable VB autosave? I like to open a working solution/project, mess around with it, and if I cant get it working, I like to exit without saving so that the original working version is left.
But silly VB 2010 autosaves changes, therefore stuffing up, a once working solution/project. I can understand autosaving whilst working though a large solution, but I prefer to click save once I have accomplished a routine, in the solution/project.
Is there a command or couple of code lines that will pause the running program for one or two seconds?
I have a program that checks the system time every 250milliseconds and I need to skip checking it three times the first time it comes back with ":00" seconds from the system clock.
Or another option would be to reset the timer to 1000 and then back to 250...
I have a program which I am converting from VB6 to VB2010 this is also my first venture into sql. I have read many of the examples to try to get to grips with deleting records including those in this forum by imcilhinney
My problem is that I want to delete all but one of the records when the user presses a button, everything goes well until the 'ExecuteNonQuery' is reached.
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I use windows Vista.I had been working intensly on a new program all day today and pretty much all day yesterday. I was almost finished.Then my computer crashed. I rebooted.When I came back into Visual Basic 2010 express, I expected that somewhere I would see my files. Besides... I HAD BEEN SAVING THE FILES ALL DAY LONG USING CONTROL+S on my keyboard. The little * symbol at the top of each file would go away. I assumed that meant it was actually saving my work as I went along. I did not, however, actually go to file->SAVE at any point along the way.
After coming back into VB2010 express, no autorecover dialog appeared. I looked for my project in the list, and it wasn't there. I looked at "recent files" and "recent projects" and found nothing. Finally I searched my whole hard drive for my project, and found only one EMPTY directory located at:
C:UsersDellLaptopDocumentsVisual Studio 2010Backup Files, which matched the name of my project I had spent the last two days working on.
I am using Visual Basic express to create a serial interface to a multi-room audio controller. I have started by creating a form that can connect to the controller and I can receive data from the Controller and display Zone status, volume etc in corresponding texts box thaks to help from Stanav and Tassa in my previous thread.
My next problem is to do with receiving lots of data from the serial port and my application getting out of sync. This is mainly caused by turning the volum control as each time it is turned a little bit the controller sends out the new status of the Zone being effected
eg
****Turning Volume knob on Zone 1***
Status returned from Controller:
#Z01PWRON,SRC3,VOL05<CR>
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I am using wmplib and i like to know a duration time of a lot of files onto a same folder (software for audiobook for low vision persons)
View 2 RepliesI 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
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This is a VB .NET application where we are showing the output of a SQL statement in a Datagrid view. using .NET 2005.We need to get the seperators of the headers on the grid control to be the same colors as the GridColor on the form. See the picture below:We've tried looking through all of the properties of the DataGridView control, and found some interesting things that looked promising such as the DataGridViewAdvancedHeaderStyle, and DataGridViewHeaderBorderStyle, but none of it seems to allow you to change the colors on it.Does anyone know how to do this without remaking the entire thing with a GDI+ control?
View 2 RepliesI have a problem when writing to a ms access database file, here is my code:
My problem is I get the following error and I dont know why: ERROR : Syntax error in INSERT INTO statement. on statement " da.Update(dt)"
Private Sub cmdsubmit_Click(sender As System.Object, e As System.EventArgs) Handles cmdsubmit.Click
Dim con As New OleDbConnection
Dim dt As New DataTable
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Is there a way to automatically put a Data Grid Row Column in a data Grid?[code]...
View 5 RepliesI am coverting VB6 programs and I find that the following statement drops the leading zeros from the textbox tbLotNo.If I check the value of tbLotNo.text it is 0001, but it shows up in the Access 2010 database as
View 3 RepliesI have the below code that i am trying to have two datagrids with a grid splityter in the middle. The split seems to be working fine but the issue i am having is when I populate the datagrid it is growing in height and changing the splitter instead of leaving the height alone and adding scroll bars.
What simple thing am I overlooking?
<Grid x:Name="gdHistory" Grid.Column="0" Grid.Row="2" >
<Grid.RowDefinitions>
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