I have problems creating a file with object serialization. I get the erializationException at the lines marked in red, when no settings file exists. I'm sure with my poor knowledge, it's something simple, but I can't see what is the mistake here..PS:call from Form1:
Imports System
Imports System.IO
Imports System.Text
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I attempt to serialize an object, and it throws an exception as shown below. I assume it attempts to serialize also the UserControl that subsribes to an event of the class I try to serialize. This is not desired. So how do I avoid serializing events?
SerializationException occured:Type 'System.Windows.Forms.UserControl' in Assembly'System.Windows.Forms, Version=2.0.0.0, Culture=neutral,PublicKeyToken=b77a5c561934e089' is not marked as serializable.
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I'm deserializing an object and in certain cases it works fine, however in others it fails. The exception is essentially meaningless to me, but there has to be a way to figure out where exactly it failed so i redirect my debugging.
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I don't know whether it is simple or not because i am new to programming. my requirement is : In my vb.net winform application, the filenames of the files present in "D:Project" willbe displayed in DataGridView1 control. Now I want to load these files one after another into memory stream buffer and add the headers("ID","Name","Class") to the content in the file. Then I want to save these files in "C:" with "_de" as suufix to the filename i.e.,sample_de.csv.
View 1 RepliesI created an application that when a user logs onto their Windows account, a Form is displayed outlining the current Computer Usage policy set by the insitution and gives the user two options either Agree or Dis-Agree. The two options are in the form of buttons, with events that depending on what the user clicked, will create a log text file at a specified location, with enteries of Date,Time,CurrentUser, and if they agreed or disagreed. If they agreed the application after creating/amending the file will then terminate, otherwise it will update the file and then force Windows to logoff the current user.
Now I made a shortcut of the .exe of the application and placed it in the startup for all users, and yes the application loads at startup for all the users following the procedures mentioned above. The problem I am facing is, that if the current user logs off, or is forced to log off, and another user logs onto Windows, goes through the whole ordeal mentioned above, the application is denied access to the logfile that was created under the previous user, and thus crashes.
So my question is, how can I created a text file using vb 2008 application, that is accessible by multiple Windows users. I have even tried changing the location of the created file to the shared folder, but the end result is the same.
I'm looking for a way to (easily, by preference ;)) create a download link to a file on a separate file server.The situation is as follows: the application I'm developing (asp.net 2.0 in vb.net but I have a similar issue in c#, either solution works for me) will be run internally for a company.As is good practice, the file storage and web application are on two separate servers.I basically need to be able to create a download link to a file, the only available URL i have to access the file is servernamefolder1folder2folder3file.txt (can be any sort of file)[code]Which doesn't work for obvious reasons. It used to be set up to write that file to the application path itself and that worked perfectly, but it isn't good practice and that's why I'm changing it (or trying to).I read solutions about creating a download page and then having a table in your DB which holds the links and returns the proper web URL for download but the time constraint I am faced with unfortunately doesn't allow me to develop that.
Assuming I can provide a string with the full filepath to the file like the above, what is the easiest way to just create a link that, when clicked, downloads the document? I have 0 admin rights in this environment. That really isn't helping me. Let's assume I am given the correct link like above and have the appropriate file access rights and such.The above example does work in IE, but not in Firefox and Chrome. IE converts it to a file://servername/... link which does what it's supposed to, but FF and Chrome both actively decided that this is unsafe and have disabled it from their browsers.
I am making just a simple program that will create backup dummies of all the files in a specified folder. All I have is 2 text boxes, A and B, and a button to do the magic. What I want is for the user to input into Text Box A the location of all the files, and in Text Box B place in the destination folder, then when the button is pressed it will get the name of each file using a loop and recreate a new file with the same name and extension in the destination folder.For example:
C:FolderX has 10 files in it, each with the same extension (.wav), each file is ranging from 10mb to 100mb (this size is irrelevant)
C:FolderY is empty
What I want to do is create each file from X into Y, however the files are all 0 bytes (no data inside them). I've managed to get a simple script that will do what I need but only if I specify the file name:
Code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Filename As String = My.Computer.FileSystem.GetName(TextBox1.Text + "test.wav")
Dim SaveP As New System.IO.StreamWriter(TextBox2.Text + Filename)
SaveP.Close()
MsgBox("Files Created")
But what I need is someone to show me how to create a loop that will do this for each file in the folder, without me specifying each filename.
I have a vb.net web app, and I need to give my users the facility to download a ms-word .doc file. This file needs to be created dynamically, and should contain some bold text and a table.
I've come across this code, which builds a .doc file, and lets you download it:
Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim strFileName As String = "GenerateDocument" + ".doc"
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...but I don't know how to make the text bold, or create a table. I'm sure there's a better way.
notepad file means that is used for .java file and .txt files.so this files should be converted into .exe file using the vb.net environment.so, if its required software is not installed in any pc, that file will be opened without its installation s/w....I know this is used without the code.. creating a .exe file i hav to write a code..
View 2 RepliesAssuming i had written a program in vb 2005 than i wan to let other ppl on other computer use but they dont have vb 2005 installed .Therefore i would like to be advise on how to create a setup or exe file so the user on other computer can just double click the exe and install and start using the program i create in vb 2005 without installing vb 2005
View 3 RepliesIm new to programming and I'm having a problem with an university assignment.I need to control a pneumatic system through a vb app and i want to create a log in which I save all operations. I have a textbox_log and everytime something happens a new line in that text box appears.
I want that text box to save it self automatically in a txt file everytime a new line is written, but the problem is that I can only save the whole text box at a time! And i want to add just the new line to the txt file. Is that even possible?
I am creating a screen capturing software. I have no problems shooting screen shot, saving it as bmp, png, jpg, etc... But there is one problem - I want this application to create videos captured from screen. And so I set a frame rate, timer, and the timer shot screen shots. But - how can I convert a list of bitmaps into an avi file?
View 2 RepliesI'm reading files from folder I have collected all files details and I need to prepare a xml file ..create xml ..!! please
Xml = New XmlDocument()
Xml.AppendChild(Xml.CreateElement("ROOT"))
Dim xmlroot As XmlElement = Xml.DocumentElement
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I (SQL Server DBA) have inherited a VB App, being called in a TSQL Script, that creates a PDF using the Crystal reports. Until a month , PDF was being generated with correct extension and size, but for some unknown reason the app creates a non PDF file with Zero size. Interestingly the script that calls the App and send the PDF created as an attachment in an email via MS Outlook, sends it as PDF with data.
Also when trying to open up the same 0KB file in Acrobat, gives an error:
"Could not open because it is either not a supported file type or the file has been damaged (for example it was sent as an email attachment and wasn't correctly decoded)"
FYI, the Exchange server was upgraded so the email isn't working either and its causing a great pain for management to not to be able to have that report.
create a file explorer which will enable you to select a file from any folder,and be able to filter the results from size,date,etc.
show all the results of a selected folder in a list and then filter it according to the user's needs,which is kinda like the "search" or "find" function in windows.
I have been working on this for awhile and I'm completely stuck, I'm making a program for Resident Evil 5 that calculates the times for each level to let the user know how much time needs to be shaved off before the infinite rocket ammo is unlocked. It's mostly just for fun, but I'd like to make it as useful as possible.
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I have created a program for making soap. I am having trouble creating a save file for the program. I want to create a txt like string save file.
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I'm having trouble now incorporating the breakup of the string using .Split:
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I can't seem to find a way to take each instance of oils(i) and then split for which(0) and set field "Txt" + which(0).Text = which(1)
i have design my windows application in visual studio 2008 and i used crystal reports 2008.now i created a set up file which runs correctly in my system but when i run on other system its not running . tell me detail procedure (means step by step procedure) to create set up n which file to run on other system.
View 1 RepliesI've created a program that will allow me to save user input into a text file on my C: drive. I'm trying to figure out a way where the text will be saved using a tab delimiter (I'm still new to Visual Basic.NET 2003). What I have to do is get the information to save in the form of columns and rows so that when the text file is opened using Microsoft Excel (ex. Microsoft Excel 2007), all of the information will be saved in its own columns and rows without any manual intervention (ex. no changing column widths or anything like that).
Here is my code so far.
HTML
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
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When opening the text file using Microsoft Excel, Excel should display the data like this:
Name | Mailing Address | Age
John | 2300 J. Street | 19
modify my code (so that the information will be using a tab delimiter) whereas the text can open up in the right rows and columns in Excel after a user has submitted the data to the text file.
I have a project for school where I am to create some form of security for an application, our brief was to basically to create and hide a text file in the applications program files (not all that secure really, but heh I don't write the briefs) So I have created the code and form to check that a users security key is valid it all works perfectly in the debugger, it writes the file to the specified directory, however when I run the application on a computer (after deploying it with the correct directories being set up, it never creates the .txt file to write the information created during "Authentication" - I am really confused and I am not sure if this is part of the "problem" I am supposed to be solving for school, or whether this is just some crazy exception that has been thrown up
View 2 RepliesI have this peace of code, where I want to make an excel file:
Dim filename As String = ""
Dim sheetname As String = ""
Dim xlApp As Excel.Application
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The problem is that this only works if the file and sheet already exists. How do I create a new Excel file?
I have successfully created and written to a .dat text file. The code below shows how I did this.
filename = "Login.dat"
FileOpen(1, filename, OpenMode.Random, , , Len(user))
NoOfRecords = LOF(1) / Len(user)
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Im having trouble creating and then writing to a file. First, I check to see if the file exists, if it does not, then I create the file, close it, and then open again for appending text. I am getting an error during debugging saying the file is in use by another process, which is confusing since I am closing the file before opening it to append any further text. Here is my code:
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Im working on my school project (which is a control centre for a LAN gaming club).What i want to be able to do, is read an XML file, which contains details about the games (name, description, path etc), and produce a button for each game in the XML file. These buttons should allow the game to be launched, be named using the games name, and show the description in a designated area
I'm already able to write the game information to an XML file in another form, but have no clue where to start when reading the XML and creating the buttons.
Now i am tring to make a data set by creating it in separte DLL file(using VB net) the code i used in this dll fle aready workong in my form but i tried to use it by this diffrent way ,,,but no way this is the code of the dll file. Bonjour tous les monde,,
Now i am tring to make a data set by creating it in separte DLL file(using VB net)the code i used in this dll fle aready workong in my form but i tried to use it by this diffrent way ,,,but no way this is the code of the dll file.
Public Class WAELDS2
Private _MAXROWSXX As Integer
Public Property MAXROWXX() As Integer
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it always give me 0 evenif the table contains 8 records?
I am making just a simple program that will create backup dummies of all the files in a specified folder. All I have is 2 text boxes, A and B, and a button to do the magic. What I want is for the user to input into Text Box A the location of all the files, and in Text Box B place in the destination folder, then when the button is pressed it will get the name of each file using a loop and recreate a new file with the same name and extension in the destination folder
View 1 RepliesI'm getting this error 'column' argument cannot be null. Parameter name: column at the bold character instruction. Also I would like to know how to relate two tables with two key columns in each table
I'm getting this error 'column' argument cannot be null. Parameter name: column at the bold character instruction. Also I would like to know how to relate two tables with two key columns in each table
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I have a project working on at work, it involves creating an invoice for each client and attaching that invoice to an email and sending it out. I chose to use XML for the data manipulations. I could have easily gone with a access file or a sqlCe db, but that would cause my data to be in a proprietary format; this is what i am running from. Furthermore, I have no experience with XML data and i thought here would be a good place to start.
I am reading the data for the invoices from a text file that will always be in a specific format each time it is produce. Information from this text file is stored in a generic list of a Class name Invoice.
The area where i am having the problem is where after collecting the data i now need to save it in an XML format. here is what i have so for
'Filename: cInvoice
'Written by: Curtis Jackson
'Written on: May 20, 2009
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you see where i have function "writeNewInvoiceData" this is where i am stucked. I just don't know how to create this XML file.
I am using SaveFileDialog with SaveFileDialog1.CreatePrompt = True.When I go to save a File and write in a name that is not created yet, a pop up box comes up and says do you want to create this file. I click yes, But it dosent create a file? Here is my section of code.
Private Sub SaveToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveToolStripMenuItem.Click
SaveFileDialog1.Title = "Specify Destination Filename"
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I've an arraylist having 30000 items in it, what's the best way of creating a text file on the fly from an ASP.NEt page? Currently I'm using the code below but it times out with large data,[code]
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