Tell & interduce a pdf the full explain about file programming in vb.net(such as create , open in binary and .... , explain file stracutre and all)? a full article (most of the ways about file in vb.net)?
View 4 RepliesI want to create a pdf file from Binary data. I looked around and found examples using iTextSharp by fetching data from the database.[code]...
View 1 RepliesHow can I open and create file in VB.NET as I do in VB6?[code]
View 5 RepliesI want to create a small application in VB.Net which will zip the file such that when user will unzip this file, a url will be opened in user's default browser. Is there any way to create such files?
View 4 RepliesI'm letting my users write their own HTML from my webpage. When they click the preview button, my code behind needs access to controls on the page (and so I understand I can't use a web method here). It builds the HTML and saves it as a file on the server. My question is: Once the file has been made, I want to automatically open the file in a new window for the user to see their handy work. I'm using vb.net, but happy to receive c# answers.
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[how can i create binary tree for mlm
View 1 RepliesI need to compare two tree-structured reports and show comparison results in a datagridview in vb.net. I think using tree structure should be efficient. But note that I DO NOT use a tree view to display results (I found a lot of help in tree view though). All I want to do is to construct two trees, and then search the trees and compare. I do not know how to write this in vb.net.
View 1 RepliesI've gone through about 16 hours and two packs of cigarettes trying to figure this out. First a little background. I was using 6.0 up until 2004 when I went to prison. I'm out now, and trying to relearn the trade, using VS 2005. I'm currently porting some 6.0 code from another project, SpyCast Webcam Studio, into VB 8.0. It's disheartening, to say the least. None of the old built-in subs/functions work anymore, so I have to scour the forums to relearn each and every function.The section I'm doing now takes a snapshot from the webcam (Video API --> PictureBox --> Save as Jpeg), then upens the file to upload it to the server via HTTP POST. I've been using this code in SpyCast for years with no trouble, but I spent many hours trying to piece together the right code to open the binary file to read its contents. I pieced together two methods I found around the forums, one using FileStream() though the code I found wasn't for binary files, even though it said it was, so that code doesn't really work. Method two uses Microsoft.VisualBasic.FileOpen() and works better.
Here's the kicker. By the time I run through the rest of the rigamarole of uploading the file, by the time I read it on the webserver, it's *slightly* corrupted. It's a valid Jpeg, no errors, but the picture looks like when I use to watch the Playboy Channel when I was a kid scrambled with weird colors and whatnot. [code] Each "chunk" is basically one "line" of the file. It looks like a single LineInput() return is the text between two carriage returns. Am I correct? I tested this with a flat text file, and it looks true. However, That one input line returns the text or data with the carriage returns *stripped*! ***?!? =( Fine, I have no problem adding my own vbCrLf to each LineInput(), if I were opening text. but this's binary. A character could be Chr(10) or Chr(13), both of which are removed from the original file contents.So I could very well need to use something other than LineInput(), but I haven't found any other examples on the web using this method.
I have a requirement to create multiple fixed length files so that I can use the files for testing in another application. The following code causes an error when run.
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I have a VB.NET dll which pulls out binary data from and opens it as a pdf. It works fine if I create a file on the user's machine and then open that. What I want to do, however, is just open it in Adobe without creating the file on their machine first (there's customer data in the file and we don't want copies of it sitting around unecessarily).
It's possible in ASP.NET to just stream the data to a browser and open it in that without creating the file, but I can't find a similar methodology for doing that straight to Adobe. Does anyone know if this is even possible or do I have to create the file in order to have it open?
can someone teach me how to open the file with binary mode in VB.NET?
View 6 RepliesCan anyone help me to break down the instructions for this assignment.Create an application that allows the user to type in a 32 bit number using the binary system, and convert that number into the decimal numbering system.For example, the user types 000000000000 0010 (where there are 30 leading 0's, 1 then 0 from left to right), and the output would be 2.The user will type a string that is 32 characters in length.A For loop 'reads' each character using the x.substring(i,1) where i is the current character we are reading and 1 means one character only,and x is the entry the user typed (use a Textbox to get the entry but Inputbox is also ok).When you start at the first character (from the right) then that value is to be * 2 ^ 0 then the second character is to be * 2 ^ 1, then the third character is * 2 ^ 2, hence:( x.substring(i,1) converted to Integer ) * 2 ^ j represents the decimal value of the current number (0 or 1) we are reading.A variable is needed to accumulate all those values.After the loop is done, display the accumulated value.To test this code on a simple version, enter a 4 digit binary number, where 0010 is decimal 2, 0110 is decimal 6, 0111 is 7, and 1000 is 8.
My understanding is the user must enter 32 digits into a textbox. The textbox should place limitations that only allow the digits "0" and "1". This error could be displayed to the user with a messagebox that then asks to reset the value orginally inputted into the textbox. My understanding is I should continue creating the formula of the position of each character where the third character is *2^2, fourth is *2^3, fifth is *2^4 and so on? I don't understand the formula and how it works.
i have a requirement where in i have to update the information of a record with new values.how to open the binary file and update with the new information.The existing binary file contains 5 records with serial nos.now i want to update the information of sno 1.i am using filestream, binary reader ,binarywriter SureshThere is an Island of Opportunity In the Middle of Every Difficulty
View 1 RepliesI need to make an E-Search engine for collage library , i can make it by using streamReader and streamWriter , but unfortunately i have to use Binary to make this project ... i've to many fields to put it on DAT file , and i've to use SPLIT to split lines and make arrays ..
what is the best way to do that ? how can i write an opened binary file on textbox and convert text to array ?
I have looked everywhere for some info on how to code save and open buttons. In my program, there are textboxes and labels that will have info entered into them by the user. I need to be able save whatever is in the labels and textboxes. Then, I need to be able to open the file and have all values in the labels and textboxes to be restored to wherever they were. I want to be able to save and open just like in excel, word, and whatnot with a file that is saved onto the computer.
View 14 RepliesI'm new to visual basic, and need to make a simple program to create new folders on my server. is to connect my excisting SQL server database to this program. Should it be connected using macros, or using the data source-menu? My excisting SQL server has this placement on the server:
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I installed SQLExpress 2008 on my computer this afternoon and have been trying to create a new database and open a connection to it. I found this code online and tried it:
Dim
conStr As
String =
"Server=MSSMLBIZ;Database=;Trusted_Connection = yes"
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I need to create an XML doc that I can call up and populate a treeview with. Can someone show me that basics on doing this. A simple example will suffice. Note I am not using XML-speak for any of this description. Assume I have some unknown number of Types (Parent Nodes). Each Type has a possible of Three Groups (children to Type nodes). Each Group has an unknown number of randomly names Cases (children to Type nodes). I want to create this XML file, save to a directory and the open again later to load into a treeView control.
Type1
Group 1
XYZ Case
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i try to make an application that can communicate with the door magnetic device. So, when the visitor come to my house, i can control the door OPEN or LOCK using my PC. I;ve created a window form using VB.NET with button "OPEN" and "LOCK". Can anyone provide me some advise how to do this, or with some source code together found in other website?
View 3 RepliesI am unable to create or open a project in Visual Studio. the error message is Invalid URI: The format of URI could not be determined.
View 2 RepliesI am currently writing a program in VB 2008. Here is what the program is intended to do: I need it to have two forms of input, so I want it to open existing text files and create new ones. Once the user has selected what input to be taken (either a file is opened or a new one is made, guessing multiple forms need to be used here) the user will then take the text file either created or opened and then be able to click a button which will sort all the text in the text file into alphabetical order and then display the results to the screen. While this happens, I need the words in the file to be counted by a counter (so a loop i guess) that then displays on which line each word appears on. I then need this information to be displayed in a text box on screen.
View 2 RepliesI created several Reports in Visual studio. and now I would like to create a form with buttons that open the reports. I have been searching for the code to open a report but cannot find anything useful.
Do I have to add al the Report projects to my ReportForm project or...?
i have a few questions about seting up a form.when you creat a new for open the dataset drag and drop the tables to form it creates a top menu bar with pages plus sign and x and save.now when you run the app you need to press the plus sign to add data in the database..is there a way to make it that you dont need to press the plus sign?
View 3 RepliesOk i need to create a program that lets the user open a text document and lets him do the following. This is with Visual Basics 2008.
Count Characters
Count Lines
Count Words
Count All
I don't know how to get my program to count just individual words and i have no idea how to get it to do all 3.
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link [or links] which explain how to create a stock open/high/low/close bar [or candle stick] chart in Visual Basic 2010 Express.
View 3 RepliesI've got a VB.Net form application that dynamically loads user controls based on which navigation link the user clicks on. I'd like to make it easier to use at Design time by putting a link of some sort to open the User Control at design time. The link would go onto the form in the space where the User Control will be going. This just saves a little time from having to browse through the files to open the correct file.
View 2 Replieshow do I create a label that when clicked by the user, it will open a website using the default browser. I have seen the control LinkLabel but I do not know how it works or how to use it.
View 3 RepliesHello I want to create a windows form application program that can create games something like Gamemaker or Klik & Play (butt less advanced) with D&D "Drag and Drop" events and actions.
View 7 RepliesTo create a program that asks for input then uses an else statement to create a handling fee balance.
Input: sales record - first name, last name, purchase amount, balance before purchase
Output: report - full name, old balance, purchase amount, handling fee, new balance
Definitions: handling fee is 5% of the old balance if the old balance is less than $1000.00 else it is 2% new balance = old balance + purchase + handling fee
Processing:
Ask for and receive sales information
Calculate new balance
Print output report
End the program when a purchase amount of 9999.99 is entered
I want to create a class is it where I can do...
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How do I do this? Do i create a class and create a instance of CarData? but how do I add Color and Year etc to it?