I would like to know what are the basic steps involved in setting up your application to able to read data from another application. Then take that data and modify it and send it back to the application. The data being read will have over 100 fields.... what is the most efficent way to store them? Put them in a class object?
View 1 Repliesprogram I am writing needs Microsoft WinStock involved with it. Where do I find it and install it?
View 12 Replies Using an OLEDB connection I want to do a select statement but for the table I am selecting from, a table member also has to be there too which seems to be messing up my results. Normally I would write to get the column "col1":
SELECT lib1.table.col1 FROM lib1.table
For the table I need the information from, the table has a "submember". From what I have gathered the syntax is something like this:
SELECT lib1.table(submember).col1 FROM lib1.table(submember)
The problem is that the results are giving me every column within the table, not just my "col1" data.
Is there an easier way to do this?
The .ColorReportedDate, .ColorTypeKey, .IsColorKeyNull, etc are from my strongly typed dataset row.
If .IsColorKeyNull Then
.ColorReportedDate = Now()
ElseIf cboColorType.SelectedValue <> .ColorTypeKey Then
.ColorReportedDate = Now()
End If
i have a website and i want to download a file from another folder on the same server. I want to use webservice, which i am not very familiar with. How can i download that file by pressing a button on my website, using webservice?
View 1 RepliesI am use this code to transfer a file from a webservice to the clint:
[Code]...
I should start a project where several clients are included. There is a wcf web service controler that after a call from an specific client about a certain question it will retrive data from a server in London and then it will pass it back to the corresponding client in a different country e.g.
Clients and service are far away. the only way of transportation is through HTTP and intenet connection. Service should be able to callback also so i guess it will be dualHttpBinding.
I am currently debugging throught a lengthy piece of code that behaves differently if the batch loaded is created from one way or another. I have tried going through it and it seems each step is the same, so my question is, Is there a tool that will record each line of code that is hit while debugging? so instead of writing everything down and risk missing something i could just run the program use beyond compare to compare the results of both runs.
View 1 RepliesI have created a table with the following fields
loan_id (PK)
loan_date
loan_return_date
loan_user (FK)
i have set the loan_id column to increment in steps of 1, but when i add a column in visual studio 2008 express it auto increments in minus steps -1 -2 -3. it increments in positive numbers?
I have just downloaded VB Express 2008 with the intention of teaching myself how to use it from scratch. Previous programming experience limited to Lotus / Quattro Pro old style macros. Preference would be to work through a good hard copy DIY manual starting from the basics.
View 18 RepliesWhat is the code for making steps in dgv? For example I have a button, every time that I press the button I want to make a step in dgv row
View 2 RepliesI am ready to deploy my vb.net project to my client computer.In my development computer I have crystal report 9, sql server express and .net frame work 3.5 installed.My Client computer hasn't got anything installed there.I am trying to making msi installer so that it will be easy for my client to install.I created the new solutions -> setup type project, added the project on it and build it.it successfully created the msi installer but it doesn't installs the sql server express and crystal report.How do i make the installer with crystal report and sql server and also with db
View 1 Repliesi am creating a ticket ordering system, there is 5 - 10 step for public user to choose what they want. These steps is dynamic, can some one advice me what is the best way to store data during steps, so that i can have a back button to return to previous step or retrieve data from step when compiler at last?
View 1 RepliesI am relatively new to the world of programming and I was wondering if anybody could help me with a small project. I am trying to create two programs in VB.Net that each do one of the following individual actions:Find the average grade given several user-inputted scores on assignments. The program should also provide the following feedback according to the final score (i.e. A, B, C, D, F).Run two separate threads printing numbers (or words) in ascending and descending orders. (The numbers (or words) should be given by the user.)I have a basic understanding of VB.Net, but I am having trouble when it comes to creating even remotely complex programs. I have a few ideas on how I may go about these, such as using an arraylist for the first question that takes user input to find the grades, and then uses a series of If-Then-Else statements to display the letter grade, and possibly using steps simply with dual threading that would result in numerical order being printed in ascending order and descending order.
View 1 RepliesI have code that runs a deal.deal is a series of conditional steps [e.g., pay Fee1 from Account2 if (Variable5 > 500, Variable5 / 2, 0)].
These conditional steps are stored as strings in an access database.The conditional part can be extremely complex.
What is the best way to get my code to understand the conditional part?Do have to write some huge parser?
Is there a function that can do this for me(something similar to application.evaluation function in VBA)?Or do I need to approach this in an entirely different way?
list the steps to fill a combobox using a bindingsource. I dragged a bindingsource onto a form, created a datatable and datatableadapter(correct term?), added a query. I tried but I am missing something, my combobox displays System.Data.
View 5 RepliesI'm interested in a description of the step-by-step process for creating a custom control and making it available in the toolbox with vb2008. Just for an example, suppose one wanted to have an array of 9 buttons in a 3x3 pattern already labeled 1-9 as a control usable from the toolbox just as a single button or label etc. is, so that one could drag it from the toolbox to the form or a groupbox.
View 1 RepliesI want to write a human resource programme that can accept employee records and compute for their salaries and overtime and also print out the needed salary slips and reports.
View 1 RepliesI am working on a project in VB 2008 and need it to do this:Read first line from text file (using Openfile)Enter line into textbox on formDo some other codeThen Read second linefrom text fileEnter line into same text boxand loop until we have gone through text fileI am not sure how to read line by line from text file then enter it in textbox. I can open the Openfile and get the filename and everything, but I just am not sure how to read from it or enter that line into the textbox.Here is what I have, its not much but its a start:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim FileReader As StreamReader
[code]....
With a 1-many relation. Ok, I have constructed the schema, and now I want to make the appropriate forms in which a user would scroll for a customer and then by pressing a button, a new form would appear showing all the orders that he has made.
I am interested in the way of building two forms that would have a one to many relation. That is basically what I would like to know. Also, Do you have any good book to suggest in order to create a real world app, in VB2008, Emphasizing in data-binding and connecting controls with underlying DB, one to many forms, searching etc.
This is weird. I have a class that inherits from IEnumrable whose Count property is reporting 0 (zero) elements but the For Each loop steps into the loop body and tries to use the variable where it should just be moving on. My code:
On Error Resume Next
Dim d As Foo
For Each d In fooCollection
' use d and throws an exception
Next d
Weirder still, every time d is accessed i get an exception thrown in the output window:
A first chance exception of type 'System.NullReferenceException'
but i'm not stopping on the exception (not in a try/catch block).Is "On Error Resume Next" causing this weirdness?
Weirdness found:Per Rowland's and JohnH's comments i checked the Foo class:The GetEnumerator method inside of Foo didn't actually return anything! It had an empty body. That coupled with the On Error Resume Next before the loop caused the havoc! Wow this was ugly.
how to create table in visual studio 2008
View 2 RepliesWhat will be the steps for finding the DFD of A Project based on Banquet Hall?
View 1 RepliesI need to write data to a file, preferably in binary format, but I am unaccustomed with the concept. Where's the easiest place to get the basics? I could come here with a specific need, but I'm at the point right now where I am more willing to work within the confines of keeping it simple.
Here's what I know:
1. how to open a new file
2. how to specify the record length
3. how to close the file
Some specific questions:
Does the record length have to be constant throughout the file?
Can I read the nth record without reading the whole file?
I want to be able to able to read the dimensions of a TIF image without loading the entire file.
PS Using Visual Basic 2008 on Vista64.
I want to perform two hashing operations concurrently on a single file, without reading the file twice. Is there some way to share the FileStream between two synchronized hashing threads? For example:
Dim Stream As New IO.FileStream("...", IO.FileMode.Open)
Dim HashA, HashB As Byte()
Dim A = New System.Threading.Thread(Sub()
[code]....
Maybe some way of caching a stream? Trouble is, I don't want the entire file in memory at once (it could be many gigabytes in size) and I don't want the file read more than once, due to speed issues. I want the file cached only sufficiently to ensure that both threads can work.For example, suppose at some point in time, thread A had read 100k of the file, but thread B had only read 20k of the file. The portion of the file between 20k and 100k should be cached; but then progressively forgotten as thread B catches up. Then again, if thread B is too slow, we might still end up with hundreds of megabytes being cached.Maybe thread A should be made to wait while thread B catches up. Maybe the ReadByte() function of the stream should block for a while if one of the threads is too far behind?
I have a checked list box that is populated with the text from a text file. I started off with this code:
Dim FileToLoad As String
FileToLoad = TextBox3.Text
Dim fs As FileStream = New FileStream(FileToLoad, FileMode.Open)
[code].....
friend of mine has no HTML knowledge so I'm attempting to write a program that replaces certain parts of a html file to suit his needs.I've edited the HTML file and marked certain parts with "tags" like this:
#IMAGEURL1# I have a textbox where he can copy + paste an image URL and hopefully the #IMAGEURL1# is replaced with the contents of the textbox.
So can someone please enlighten me to-as how to open a HTML file (there's no textbox to display the contents just yet, I'll add one if needed), find the specified text and then replace it with whats in a textbox.
I am trying to import a TAB (NOt comma) delimited text file into a DataGridView. The following code works fine if I have a comma separated file. All I have to do is change the FMT to "Delimited".It just does not work with FMT=TabDelimited. All columns are read into single datatable column. The text file is ANSI text and I have double checked to make sure Tabs are tabs and not spaces, even exported a sample Tab Delimited file from Excel.Can this even be done using Text Driver? [code]
View 2 RepliesHow do I play a WAV file while the computer is reading aloud a text file? It uses Text to Speech synthesis and I need a laughter wav to play when the computer comes across something funny in the line.
View 2 Replies