VS 2008 Program Transferring Data To Another Instance Of Itself Over The Internet
Apr 16, 2009
I'm developing a management program for a driving school, where information about all students is stored and accessed.
The thing is, this school has got two branches, so I need some way for those two computers to share files with each other in order to keep a common database. I would like to use the same program in both computers, to keep simplycity to the maximum.
I know it's using TCP, but I haven't got the lesser clue of how i can achieve that. I've looked around, but I haven't found much of how to acchieve something like that. The files both computers would be sharing are text files.
About the IPs, I'm thinking of using NoIP or one of those to always know both IPs.
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May 17, 2012
I have a little problem whit passing delegates. I have a program that load some data from internet. When the loading starts i create new thread for this. What I want is, when the loading ends I want to call one procedure in my form. So when I initializing class I want to pass that procedure. But I have problems with implementation. This is the pseudo code off my class and how it should look like.
Public Class GetArtistInfo
Public Delegate Sub RefreshInfoSub()
Public RefreshSub As RefreshInfoSub
Public Sub New(ByVal RefreshInfo As RefreshInfoSub)
RefreshSub = Address Of RefreshInfo
End Sub
[Code]...
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Mar 21, 2009
my vb.net program automatically detects if the current window is the internet explorer. If so, the program now should read the current url. Is it possible to read the current url of an instance of the internet explorer? How?I read a lot about "SHDocVw". But I can't find this lib on my computer (vista).
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May 27, 2010
I am developing a application where a url is supposed to be passed to Internet Explorer using a search button. But if more than one url passes it should open in same instance. I dont want new instance to be opened every time. I am using SHDocVw.dll for the same. I have coded for opening a new IE instance and URL is getting passed successfully. But meanwhile if I close that open IE then I get exception and my program dont work.
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Aug 9, 2009
I wrote a simple auto login script to update my IP address on a certain website. Something really strange is happening now though. The first time I run the program, nothing happens. However, the second time I run the program, that instance will work fine. Then I look in task manager, and the first program is still running, using a whopping 50% of my CPU. I believe VB may be blocking off memory or something, as when two instances are running each is using around 25% of CPU. Then after the second one successfully completes, the first starts to use 50% again.
Here's my code below:
Option Strict Off
Public Class frmTest
Private Sub frmTest_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code] .....
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Mar 14, 2011
how to PROPERLY make a multi-tabbed or multi-window application that can handle file start requests.
For example, on startup my "Desktop Application" runs and sits there waiting for a task, either through the main menu, or for a file to display in a window. Now the problem is simple, how can I make this already running program load the dropped file (dropped on the executable (!)), instead of starting a new instance.
I understand I will have to check if the process is running, and if so, do some stuff with it. But the problem is passing the message to the active program.
Previously I used text files with paths/arguments in them, but I don't like the idea of the OS/program checking every 500 ms if a file is created in the "load this" folder...
Then I thought of sending a message using "Send Message", for example changing the text in a textbox and handle the "Text Changed" event, but is this reliable? Can any other program interfere with it?
So, basically I need the proper way of doing all of this. For example, Microsoft Visual Studio does this nicely, and no lag whatsoever...
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Jan 7, 2010
I have the following code in place: Protected Sub btnBuy_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnBuy.Click Session("ShoppingList").add(New OrderInfo(txtQuantity.Text)) Server.Transfer("ShoppingCart.aspx") End Sub
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Jun 12, 2011
The title of this thread perhaps does not explain my problem correctly.Actually i am developing a financial software for a company.The software is similar to a banking system. The software is being developed using VB 2008 and SQL Server 2008.The company has its branches located at different locations. They are having a centralized SQL Server at their Head Office.The branches are connected to Head Office using a VPN.Now what we are worried about is when the VPN gets disconnected.For that we will be having a SQL server installed at each of the branches.When VPN is connected the the details entered will be directly at the Head Office database,Meanwhile a program will be executed which will get details from the Head Office database at each of the branches in a XML file.When a branch gets disconnected from the VPN another program will get the XML details into the Sql Server installed at the branch. When the branch is connected again Another application will create a xml file from the local server and insert its details into the HO server.The sizes of the XML are reaching upto around 150 to 200 mb. I am using Dataset.WriteXML and Dataset.ReadXMl. I have tested this on my local machine it is taking upto 30-40 secs.I dont know how much it will take when the actual application is installed. How can i speed things up ? Does anyone have any idea on how i can do the whole process more smoothly and faster?
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Jan 3, 2006
I wanted to write a small piece of vb code to synchronize a few FoxPro dbf tables to SQL tables that having the same structure or at least a few fields that i selected. I had tried a code which I found on the net that running row by row and column by column to update the SQL tables but this code is too slow. In my dbf table it contains around 3000 records at least.
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Jun 17, 2011
i want 2 copy some part of one table into another but getting error @ this line
sqlCmd = New SqlCommand("insert into name_table(name) values ('" & ds.Tables(0).Rows(1).Item(0) & "'", sqlCnn)
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Jun 12, 2011
I'm doing a project that requires me to create a book ordering form. I have the books displayed in a listbox named bookselectionlistbox, and when a book is selected, it displays the price of that book in a label named bookpricelabel1. I have a button named addbutton that allows the user to add the book to the shopping cart. The shopping cart is in the form of a combobox named shoppingcartcombobox. Lastly, there is a receipt button that transfers ALL the books from the shopping cart to a seperate label called label3, not just the selected book. The last thing I need to do is have the price of each book also transfer to the receipt section. This needs to be done either on the same label3 on the same line as the book title, or on a seperate label that is adjacent to label3, I have temporarily placed a label there named label5. I am using a case statement for the bookselectionlistbox to say that when a certain book is selected, the bookpricelabel1 will display "$xx". I also have an IF statement under the addbutton label that generates a total price for all the books in the shopping cart, here is an example of the code I used for one of the books:
[Dim visualbasic As Decimal]
[If shoppingcartComboBox.Items.Contains("Visual Basic") Then]
[visualbasic = 55]
[Code].....
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May 18, 2012
I would like everything in listbox1 to transfer to listbox2. I didn't paste my whole project because it is messy and lengthy but I was able to re-create the scenario with this code:
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code].....
bottom line, I want everything in listbox 1 into list box 2 when combo box = a and button is pushed. when I try to execute, only one or less go into the second list-box and the rest stays there!
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Aug 6, 2011
I use a single instance in my application. What if I give command line arguments to the exe of my program, so I can be selective in what was given command line in my program, but still single instance?
Example:
test.exe /show
When the command /show, then my program will
Form2.Show
Form2.BringToFront
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Jun 6, 2011
I'm developing a project for gathering customer feedback using a Samsung Q1 Ultra, a cheap touchscreen PC. The project consists of two parts: a PC based application that builds the survey and stores the info on an SQL Server, and a survey viewer on the Samsung device which downloads survey data from the SQL Server and stores it on a SQL Server Compact 3.5 database.
My question is, how best can I transfer survey data from the SQL Server to the handheld device's database? Writing a tonne of code to copy data from one database to another seems overcomplicated - is there a handy function or somesuch that I can use to copy data from identical tables on these two separate databases?
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Aug 3, 2009
My assignment involves wrinting an airline reservation brogram where the user can hit a make reservation button and the user can then input passenger name departure city and arrival city, all of this has to print to a multiline textbox, the professor also wants a find reservation button and a cancel reservation button.
Public Class Form1
Sub get_data()
Dim passengername As String = InputBox("please enter passsenger name")
Dim departure As String = InputBox("please enter departure city")
[code].....
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Jan 17, 2010
How would I go about transfering data within textboxes on 1 page, to the same textboxes, but on another new page.
Basically, I already have coding that caluclates distance time, price per litre of petrol (it's a bus firm company application), and put's it into textboxes within a group box on my page. Basically I just want a bit of coding which will transfer this info, to different texboxes, but on a different new page, the idea is that I can then do fresh coding on that page without it interfering the coding on the current page.
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May 4, 2011
Visual Basic 2010.I excel in transferring reports on problems in formulas..[code]
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Mar 7, 2011
I want to transfer my data from one list box to an other and save the data and display it at the same time with the TIME, Name, and the Quantity. For example, if I have a movie ticket, and says I bought one ticket thats 10 dollars. If I did type all the calculations with tax it should be 10.10 for the 10% tax. This will show on first of my list box. Secondly if I press something like Enter, it will show that 10.10 number and also put it in the other lstbox. I have 3 list box. One to show the current transaction, one to show the history of them and the total amount of all transaction.
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Jun 2, 2011
I got a window form, and I want to send data to another computer or a server over internet after the submit button is clicked. Yes, this is a very "general" question (I cant not ask it in more detail), because I don't have any information how to do that, I google it, and I heard WCF, but I am not sure how it actually can do this job (seem like WCF is related, but still researching).
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Dec 28, 2010
I am new to ADO.Net and I mistakenly using the dataset as how we use recordsets in ADO., I know that it is possible to create a Datatable which will only reside in the memory and hold data. What I need to create is like this.
1. Create Datatable.
2. Fill it with sample data at least 3 lines.
3. Transfer the data from datatable to database (access,sqlsrvr etc).
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May 27, 2009
I have 2 forms in this application. One form is just a simple SQL statement that is generated into a grid. It displays columns/rows. From there I want to be able to click on a row and have the first column of that row transferred to another form. In the second form I want it inputted into a text box. So, the user doesn't have to copy the record back out of the form then open the other form and paste.
The form opening and closing is not the problem. The problem is getting the data to transfer from one form to another!! I am not sure how to do it.. I have only been coding in VB for a few days and no formal training. I am aware of global variables and would be willing to assign the data to a variable and then have it transferred into the textbox of a the second form.
I do not know how global variables work in VB. This is what I got so far............
'The user clicked the transfer button.
Dim obj As System.Data.DataRowView = grid.Current
MsgBox(obj.Item(0), vbInformation, "Selected Data")
[Code] .....
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Dec 19, 2010
I m working with a appliction in VB.net
I have a three forms .Menu form which i have set IsMdiContainer as true
Through this form I m opening a new form named " Query"
This form has two drop down and one textbox and some other controls
When user selects ths first dropdown (States)second gets filled with City
When use selects a city I wat to open a New form named as parameter.parameter
form has two textbox and user will enter the paramater and click the submit button.
I want the text of these two textboxes in My "Query" forms 's text box and I want the drop down as it is(filled with city and states)
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Jun 7, 2011
I have a listview and Contextmenustrip control. Listview contains one coloumb. How to transfer ListView data to ContextMenuStrip?
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Jun 28, 2010
I have written a VBA code in EXCEL that updates my tables in Access. The code is fully functionnal when I am entering new data but I don't know how to make it work when a data (primary key) already exists and that I need this data for another table. I would like to find a code in this format (DAO) :
If value exists in table Then
Return the value.code (not the value but the code related to this value)
else
.addnew
here is what I have tried but does not work:
Code:
Function Find_Last_EngineCode() As Integer
Dim cn_engine As ADODB.Connection, rs_engine As ADODB.Recordset, feuille As Worksheet, plage As Range, last_record As Integer
Set feuille = Application.ThisWorkbook.Worksheets("To_Access")
[code]....
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Apr 5, 2009
I have a psychology experiment that has users respond to specific text or pictures by pressing either a button for "similar" or a button for "opposite" and then the program records the time from the presentation of the stimuli to the time they press one of the buttons as the latency. I have the information ans some other data successfully exporting to a text document but would like to have just the latency data also go into an excel spreadsheet for easier analysis. Here is the code for one of my buttons that currently writes to the text document:
[Code]...
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Sep 1, 2011
I have no problem doing a select statement from a database and displaying it.An I have no problem inserting data into a sql database table. However with this issue I have to grab the data an insert it into a totally different SQL 2005 instance.
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Aug 23, 2010
I'm developing a program that handles money, and there is a pre-made excel spreadsheet that I am to be transfering data into specific cells. How can I go about telling my program to write specifc data into specific cell numer in excel? Also, how can I get my program to write into specific areas of a MS Word Template (my program will generate letter with the same template just different names/addresses/valus)?
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Sep 10, 2011
What is the code for transferring the information from DataGridView1 to DataGridView2?
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Jan 5, 2009
I need to know How to Clear All Data In "Temporary Internet Files" FolderIs there some code already made for that?
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Jun 8, 2011
I was wondering how to click a button on the internet or another program via a program in visual basic 2010.An example would be: Have a program being able to click the "Search" button in google or the "I'm feeling lucky" button??
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