Check If A File Selected By The User Is Binary Or Not?
Mar 5, 2010I just want to know how I can check if a file selected by the user is binary or not.
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Check If A User (or Code) Has Selected A File Or Directory?
Jan 29, 2012Is there a way to check if a user(or code) has selected a file or directory?
View 4 RepliesFile I/O And Registry :: Open / Read Binary File / Care To Check Code?
Jun 14, 2009I'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.
File I/O And Registry :: Check If A Certain File Is In Text Or Binary Format?
Mar 13, 2010how I could check if a certain file is in text or binary format?I'm using VB.Net 2008 Express.
View 2 RepliesSave A User Selected File (FolderBrowserDialog) To A Location Selected In Another Dialog (SaveFileDialog)
Jul 5, 2011I'm creating a BASIC application, and I can't figure out how to save a user selected file (FolderBrowserDialog) to a location selected in another dialog (SaveFileDialog).
View 5 RepliesRecompile Binary Code Once User Wants Restore File
Feb 27, 2011I was thinking of an efficient way to add quarantining abilities to my antivirus application. I was thinking, which way is better: to copy the file into a specified directory and change its extension to none ("*. "). Either that or maybe I can save the file's binary code in an XML database. Which way s better?However, I have no idea how I will recompile the binary code once the user wants restore the file.
View 2 RepliesRetrieve The Name Of A File That A User Selected?
Sep 14, 2010how do i retrieve the name of a file that a user selected that they want to delete?
View 4 RepliesVS 2010 - How To Know What File Selected By User
Feb 2, 2011So here it is : how can iI get info about the file that user selected in windows ? For example: the user browse to C:windows (it isn't important where maybe desktop) through explorer and select a file ( he/she just select it, not open ). the moment that the file is being selected, how can I get info about that file? I think the file path is enough. I can get the rest detail with path.
View 7 RepliesGet File Path That Was Selected By The User In The Form1 Class?
Aug 31, 2008Here is my code: [URL]..The goal is to get file path that was selected by the user in the Form1 class, transfer it to the File class, and do various things from there such word count, syllable count, etc.However Visual Studio says filePath isn't declared in the File Class, even though right above it you can clearly see it is.
View 6 RepliesOpenFileDialog - Reading User Selected File And Convert To XML
Jun 22, 2010I am using the OpenFileDialog component with a Button Sub to use the text file that the user selects (it can change everyday) in the next part of my program that will read that file and then covert it into an xml format. How do I get the second part of my program to use the file selected?
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
If OpenFileDialog1.ShowDialog() = DialogResult.OK Then
Dim sr As New System.IO.StreamReader(OpenFileDialog1.FileName)
MessageBox.Show(sr.ReadToEnd)
sr.Close()
End If
End Sub
Way To Check Comboxbox To Make Sure Of Selected Items Has Been Selected?
Sep 1, 2011In my Windows Form I have a ComboBox that is filled by a Stored Procedure with a list of names. I have the Combobox set for AutoComplete to "Suggest" and From "ListItems". When a user starts to type in and the AutoComplete does not find any matches in the listitems the user can tab out of the ComboBox and leave what they typed in the combobox even though it is not one of the Valid Items. Is there a way to check the Comboxbox to make sure of of the selected Items has been selected?
View 3 RepliesCheck If An Excel File Is Opened By Another User?
Apr 26, 2012My program opens 4 excel spreadsheets updating info. I update one at a time and then close it before opening the next one.I want to add code to my program to test if the file is already open, before trying to open it. Occasionally someone will have one of the files opened and it causes a crash. If I test to ensure it is not open, then I can avoid this.
View 7 RepliesCheck If Excel File Is Open By Other User
Mar 31, 2010I have a excel file place on server. I am using a application which written by VB.NET to open file in read only mode. User 1 open file in read only mode. How can user 2 detect that file is open or not status?
View 2 RepliesHow To Check A Validity Of Binary Files
Jan 18, 2011The program photographs people and save it to the database (SQL Server 2005 VARBINARY(MAX)) .Sometimes we get a bad picture means a binary file looks like '0X00' or somethng like that and when we try to display the picture we get an error. How can I check via VB.NET the validity of the binary file before saving it to the database Best Regards, Uri Dimant SQL Server MVP [URL]
View 3 RepliesPull A Random Word From A Text File And Check Against User Input?
Apr 19, 2011I need to pull a random word from a text file in my resource folder (visual Studio 2010) and then have a user enter a letter to see if it is in the word. Yes, Hangman game. There is more, but right now I need to pull from that text file for a start. I know what I have is not even close to right under "Get Word Button", but I'm kind of confused about the process.
Public Class hangMan
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
Dim word As New Random
End Sub
[code]....
Search Data From Database With Some Check Box And Text Box When User Select Check Box Specific Function
Dec 15, 2011My application is like this : i have to search my data from database with some check box and text box when user select check box specific function go on and then when user enters some range of value in textbox then the result will shown in data grid view after that i can print it by selecting data
my vb.net code is as follow:
Imports System.Data
Imports System.Data.SqlClient
Public Class XtraForm1
[CODE]............
I m also pasting the demo picture.
Read Binary File And In This File Found The String And Replace It With Other One And Save The File Afterwords?
Jan 11, 2011i need to read binary file and in this file found the string and replace it with other one and save the file afterwords. I found many example to read binary, but to find and replace is for me mistery.
View 3 RepliesVS 2008 Allow User To Only Check One Check Box On CheckedListBox1
Mar 6, 2010How can i allow the user to only check one check box on a CheckedListBox1..I was thinking of using a timer but that might be a stupid thing to do.
View 3 RepliesCreate An Application That Allows User To Type In A 32 Bit Number Using Binary System
Jul 13, 2011Can 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.
Vb 2008 - Converting A Character That The User Enters In A Textbox To Binary
May 11, 2009I want help emergency for a project i have, I have to make a program to do hamming codes, since now i have done the part for converting a character that the user enters in a textbox to binary.This binary now is displayed in a textbox. So now i want to save this binary to an array
e.g i have this binary 10101110
CODE:
and so on .. how can i do it?
File I/O And Registry :: Binary File Primer - Read The Nth Record Without Reading The Whole File?
May 4, 2009I 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?
Check If An Item Is Selected?
Oct 18, 2009Im making something like a save file dialog that saves a file based on the text of a listview1.selected item.How can i check if an item is selected? How can i get its text and subitems?
If ListView1.SelectedItems(0).Selected = True Then
End If
This Returns An Error If No Item Is Selected.
Check That At Least One RadioButtonList Has An Item Selected?
Feb 28, 2011I have 20 RadioButtonLists on a page.
I need to create a validation method to ensure that at least one of these RadioButtonLists has an item selected.
What kind of validation would I need to use for this?
Check What List Box Entry Is Selected In Another App?
Mar 4, 2012With my application I want to check what list box entry is selected in another app (different process).
View 1 RepliesCheck When Selected Executeable Is Net Application?
May 15, 2010Is it possible to Check if the Selected Application is a .Net Executeable ?
Like the User opens a OpenFileDialog selects a Executeable and the Program checks if it is coded with the .Net Framework.
How To Check If Listbox Contain Selected Item
May 3, 2009How to check whether the listbox contain selected item or not in vb.net.
View 8 RepliesListbox Check If An Item Is Selected?
Jul 2, 2010Iv been trying to figure this out for hours ok so basically i need a to check if there is an item selected in listbox1Heres the code in trying to make work
If ListBox1.SelectedItem = True Then
ListBox2.Items.RemoveAt(ListBox1.SelectedIndex)
ListBox3.Items.RemoveAt(ListBox1.SelectedIndex)
[code]....
Loop To Check What Checkboxes Are Selected?
Jul 28, 2011I have a input form that has a number of check boxes on which relate the users enquiring courses. I need to create a loop of some sort that allows each checkbox to be checked it is selected. If so, output that within a message box. Thats it put simply anyway.
I have removed a lot of the code that is not related to this query but my code at the bottom is the message box that i wish to output all details in.[ocde]...
Print Only Selected Check Box Of Datagridview?
Jun 10, 2011I have this datagridview of an inventory, and i added an extra column(unbound) to the dgv, so what i want to be able to do is print only the checked boxes of that dgv, i attached an image of form, i have code for printing all the dgv, but im having trouble with that.
View 5 RepliesCopy A Selected File To A Selected Directory?
Aug 19, 2010I've mainly been doing ASP programming up 'til now, and I have a pretty simple question.
I'm creating a program that will copy a selected file to a selected directory, and I want to store recent files/dirs so that they can be selected from a combo box. I was planning to just create a settings with "files" and "dirs", and just store the strings as | separated values (since that's an illegal file character).