The products file contains data such as prices and the product used such as TV. I want to be able to manipulate the data in the product and location file so i can set different products to different location types.
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I am doing some exercises on encrypting data. One of them are binary files. I am currently using triple DES to encrypt and decrypt the files both in VB.NET and C#... Now the thing is, once it is decrypted in VB.NET and saved, I can execute it again... But for some reason, my C# file is bigger! 20,4K where VB.NET one is 19,0. The C# file also is rendered unexecutable...Upon a closer look. The files appear almost exactly the same, but C# seems to add in a few extra bytes here and there in (seemingly) random places... I am currently using:
File.ReadAllText(String filepath, Encoding encoding); with UTF-8 encoding.
I'm trying to make a program that can handle menu order in restaurant.
In this program, there are Main form (frmOrder), Starter Form (frmStarter), Entree Form (frmEntree), and Dessert Form (frmDessert). Each category (Starter, Entree, and Dessert) contains 4 menus, and each forms other than main form have label for name, price (label), and quantity (textbox).
Main Form have 4 buttons (3 of them opens respective form of Starters, Entrees, Desserts. Last button calculates total), and it has big label that displays all the ordered menu. By default it has current time and date, so any ordered menus are supposed to be displayed on separate line (with quantity, name, and price with dollar sign).
Below is the code I wrote for frmOrders
[Code]....
I tried to see it works, but lblTape.Text (which is the big label that displays ordered menu) do not change. I did saw lblTape.Text got value it supposed to (item quantity & item name & item price) but it doesn't change when I close form and return to Main form. I'm not sure where I got trouble to end up like this...
I'm creating a program that displays data from a Access database in DataGridView, and I'm able to "call" the database and display it in datagridview normally, but I need to be able to take the data from 3 separate columns and average them together, within VB.
My table basically displays 3 grades for a student, one column for the student's name and the other 3 columns for 3 separate grades, I need to be able to take the 3 grades from the same row and average them together, then display them in a separate column within DataGridView.
Here is my code so far, but this only displays all the records without the average:
Quote:
Public Class Form1
Sub UpdateGrid(ByVal sqlStr As String)
Dim dt As New DataTable()
[Code]....
I am using the Print Document to create the impression in vb.net...Anything I set a certain number of records per page however see the other pages just like the first,some help to handle these records correctly in the leaves?
View 4 RepliesI have developed an application using VB.NET, Visual Studio 2008 and the SQL Server database. Now I want to ignore the database (it has 1 table as customer (name,password,hour,minute)) as I don't want my client to install SQL Server separately or other overheads.I am planning to do the whole using file handling in VB.NET (manipulating the data in files itself, for example change username, password, etc.). As I am new I don't actually know the proper way and of course need assistance.
View 4 Replieslooking for simple code for adding, deleting, editing, and updating data using binding navigator in vb 10. first time using, been using vb6 and code is totally different.
View 1 Replies I'm trying to write a vb.net application that works with a 3rd party application called FuzzyTech. Unfortionalty FuzzyTech is quite old so the only way I can interact with it is buy using DDE. FuzzyTech acts as a DDE server. After a bit of research I found a library called NDde which enables me to use DDE. I understand that vb.net does not natively supprt it as it is an old technology.
Now fuzzyTech seems to only respond to the DDE connect and pokes when in debug mode. The only way I can find to get the program in to debug mode is from the menu bar (Debug > Interactive). So I have written an application that runs fuzzyTech, grabs the window and then accesses the menu to put it in to debug mode. My code can then use DDE. I have all of this working ok (although it does feel like a bit of a hack). The problem is I don't want users to be able to see this happening.
I want fuzzyTech to be hidden.After more research I found I could hide the window on startup by using fuzzypProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden. However when I do this my code to grab the window and send the menu commands then fails. I think this is because the window title becomes blank when hidden.So I need to know a way of controlling the program after it is hidden or hiding it after it is in debug mode. This is where I am stuck. I'm very new to programming and this has got me completely stumped.
Here is some of the code I am using:
Private fuzzypProcess As Process = New Process()
Private Sub LoadFuzzyTech()
Try
fuzzypProcess.StartInfo.FileName = projectPath & projectTitle & ".ftl"
[code]....
I have a VB.Net application that populates an Oracle 11g global temporary table. I can see data in the temporary table by loading it into a grid and everything looks correct.However, when I call an Oracle stored procedure from VB.Net that would manipulate the data in this temporary table, the stored procedure reports that my temporary table is empty.I understood that data in an Oracle global temporary table should be visible to all sessions.
View 1 Repliesthis is not really a code issue, more of an events issue with objects. I want to be able to generate an output as the user inputs into each text box under the "further invoice details" section. For example, if the user inputs a value to amountrequired text box. Then a gross total is auto generated without the need to click a button.
[Code]...
I have an project which was written in VB6 and made use of the Spread3.0 component to display multiple large data from database in spreadsheet. My objective is to convert this project into a VB.NET current version which would not use the third party component but can possibly use a freeware that does similar if not all the functionality.
My question is, are there any freeware that is available in .NET for such spreadsheet-like manipulation of data programatically? I have come across dsoFramer but this only allows the display of the data in an IE frame. I would like to jus embed the content into my existing form.
Also this freeware must be able to handle formula and user-editing as well as multiple cell type such as combobox/checkbox etc.
I have an project which was written in VB6 and made use of the Spread3.0 component todisplay multiple large data from database in spreadsheet. My objective is to convert this project into a VB.NET current version which would not use the third party component but can possibly use a freeware that does similar if not all the functionality
View 1 RepliesODP.NET Query - Error manipulating data from Stored Procedure??
View 3 RepliesI want to select a single file (for examples 1.dat) and then save 3 files from this, 1.dat, 1.cmd and 1.cms. How can i select 1 file but create 3 differnt extensions? The three files are created by using filestreams.
View 6 Repliesi was just wondering if there was a way that i could compare data stored in a text file such as usernames and passwords with data input into text boxes in visual studio vb2008?
View 6 RepliesOur application is using VBSQL.OCX on Sql server 2000 to create temporary tables and load pipe delimited data from a text file with predefined format into the tables. It is failing intermittently doing this. 99% times it works perfectly. But on occasions it does fail with error. Once the process is rerun with the same input file it runs successfully.Basically the architecture is of Store/Head Office where there are around 200 remote stores sending set of data files to the Head Office. At HO our application sequentially processes each store which has all the set of files received, creates a corresponding table, loads the data from the file into the table and moves onto the next store.If it is for some reason not able to load the file for a store, it gives a failure message and continues with next store.Error which the OCX throws is "Attempt to convert data stopped by syntax error in source field"
View 1 RepliesI save data from datagridview to text file. I also load the same data from text file into datagridview for edit and update the same thing to text file. Let say this text file i called as Drill.txt. I have another text file called header.txt which need to match its value with the value of Drill.txt file then overwrite value from Drill.txt to header.txt. Now i want to make my Drill.txt in encrypted format to prevent anyone to open that file and modify out of program. They only can modify it through the program
[Code]...
I'm Writing a Problem that will allow users to move data from one Data file to the next, using a Text file. My problem is that i so far i 3 test users.
No matter what test user is logged on it seems to be Reading the first user info no matter which one is on.
How do i get it to Only Read the User Info and show it up on text file that is Currently logged on.
Code:
Imports System.IO
Public Class TestForm6
Inherits System.Windows.Forms.Form
[Code].....
i need to be able to compare data from a text file with the collection of a combo box.My algorithm currently populates the combo box with data from the text file on the form load event.I have included an update button that updates the combo box collection.[code]
View 1 RepliesHere is the code that I already have:
[Code]...
I have a datagridview which have 5 columns. The name of the columns are T,C,F,S,H. [cod]e...
So i want to display this data in datagried view. I must display the number beside T to T column, the number beside C to C column and so on. It should only display number in the respective column. It should not display the T,C and so on. [code]...
I have a text file containing ten pieces of information (5 prices and 5 descriptions) I want to load the information from the text file in to the text boxes, so that it can be viewed and edited if required.
I've declared the filename, and various variables, but I'm not sure how to get the info from the file to my form?
filename = CurDir() & "/charges.txt"
Could I use something like this:
fileopen(1, filename, openmode.append)
do while not EOF(1)
...
...
I decided on a comma separated data file, saved as a text file. This is for data that will not change. After loading the data from the text file; then throughout the lifetime of the program the data can change. The data can then be saved back to a different binary file. The idea is to have a save state system going.Does anyone have a suggestion or is opposed to the idea. Is there a simpler way to organize something like this?
View 6 RepliesI am making a simple application that will be able to store competition data into a text file that I have given a custom extension to on saving. Here is an example of the format that i have saved the data in.
Code:
[Comp_Name]Test Competition[Comp_Name]
[Location]Silverwood Lurgan[Location]
[Type]Teams[Type]
[Code]....
When i open the file, i want to redisplay the data in separate text boxes. Later on in the project i want to be able to search within the file for headings for example;
if "[Heat1]" is present then get all text between [Heat1] and [Heat1]
i am currently able to use the streamreader and open file dialog to retrieve the entire string of text fromthe however i am not sure how to go about getting the text between the headings I have used.
1 List all of the data from Teams.txt in a Listbox. Include suitable headings.
2 List all of the data from Results.txt in the Listbox (use the same Listbox as in 1 above).Include suitable headings. Note that you cannot assume that the file contains onlyresults for the first 3 weeks of the season. Your program should be able to process a results file with more or fewer results.
3 List all of the data from Results.txt in the Listbox. However, in this case the actual team names should be output (your program will need to get this data from Teams.txt. The data should be formatted so that it is aligned correctly. Include suitable headings.
The output might look as follows:
Home Team Away Team Home Team Goals Away Team Goals
Bunbury Braves Nedlands Nodders 5 2
How can I parse a text file and extract the data to excel file. The text file is in the following format
CustomerInformation
Tim Alen
596 George Town
[Code].....
I have a text file and I want to take the data from the text file and write each line into the excel file (into the same column). How do I accomplish this? I know how to read data from a text file, but I don't know how to insert the data to a excel file..
View 5 RepliesI have a variable (double) that is constantly update in real time with data from an analog input. I would like to write this data as it comes in to a txt file. When I stop my acquisition of data from my analog input, I should have a txt file with all that data stored on my computer wherever I want it. The way I'd like that txt file to be laid out is like so:
Test Title: "This info comes from a string variable"
Operator Name: "This info comes from another string variable"
Test Date: "This info comes from yet another string variable"
[code].....
And so forth. As you can see I would also like to write the time for each data. This depends on my Timer interval which the user can set. The default is 50ms. So by default, y1 y2 y3 would be 0, 50, 100. How would I generate such a text file?
PS: I have five variables (X, Y, strTitle, strName, strDate)
I need to retrieve data from a sql table and write the data to a text file. I retrieved the data using a sqldatareader. Is that ok or is there a better way?Also, now that my reader is populated, how would I write all the data in the reader to a file at once?
View 5 RepliesI need to get data from one text file and use it for a calculation in another text file. The first file has the students' current grade and the second file has the students' overall GPA,. I need to get that current grade(named 'qp') out of the first streamreader so I can use it for my calculation but it only gives me the 'qp' of the last student in the first streamreader.
Here's the
Public srStudentfiles As New System.IO.StreamReader("c:studentgradesnew.txt")
Sub Main()
Dim ID As String
[Code]....
