VS 2008 - Creating Unique File Names?
Dec 22, 2009
I am creating files and then allowing the User to browse through the files via a ComboBox. I decided to name each file the current date. In order to create multiple reports each time the application is ran, each report needs a unique name.
The idea is that if they run a report once a day they'll have a unique report each day. But, then I realized that it is feasible that User could run a report more than once a day. So, I decided to create an integer and increment it each time the report has been ran. Then append the file name with that integer. So, report one of that day would show something like this:
12-22-2009_1 and so on.And this works just fine. But, if the user decides to close the app and then run the report later that day, the variable has been reset and no longer works as needed.I'm using a StreamWriter to create the file.
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Apr 16, 2010
I've seen threads on this topic posted before but they didn't come up in the search that I did. What's the best way to get a computer id code of some kind that is unique for each computer so I could use that to create a unique software activation code?Does Visual Basic have any staements that can give you this kind of information.
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Jun 7, 2012
[Code] Since the continent and region columns contain duplicate values, these duplicates also show up in the treeview. I assume the problem is in the code [For Each dr As DataRow In dta.Rows] because this returns the continent or region for every row in the table (see attached picture). But what would be the correct way to get the unique names for each continent and region to be listed in the treeview? [Code]
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Aug 12, 2011
this website seems great and this is my first post. Sorry if this has already been answered but I have been searching for a long time. I have a program with a list view in details mode. I have it load column settings (visibility, display index, width, etc.) when the form is opened and save them when closed. There are many columns...about ten so far...like folder, file, size, etc. Is there a way to access variable names from the values of other variables?
[Code]...
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Jan 10, 2009
I'm using the datagridview. This is the sample data:
[Code]....
How do I parse through the grid to rename the duplicate values in a particular column (in this example it's the l_name field) into such a format?
[Code]....
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Nov 30, 2011
I am currently creating a windows form app with a database.The database hosts links that the user can customize.When I go to publish the file, if user A changes the Link to their liking user B also see's the changes and will cause a clash if user B does not need the link that user A has put it.
I wish to be able to have a unique database for each individual and for the life of me cannot figure out how.Currently I am having the person upload to an access DB. This is not required but I am lost for ideas
[Code]...
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Dec 18, 2011
is there any way of creating a file in visual basic using a variable as the file name? I have tried using the following but keep getting an error "The given path's format is not supported." ??? I am trying to create a log file of machine use every shift (8 hours) and just want to use the same name for the file with the date and time appended to the end of the file name. the section of code giving me the error is below.
[Code]....
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Sep 30, 2010
Whenever a row is selected in my GridView, I want to take the ID field of my gridview's dataset and form a unique URL with it (use a ?id=1234 parameter). In the Page_Load event I have the following code:
TextBox1.Text = Request.Url.AbsoluteUri.ToString & "?id=" & _
GridView1.SelectedIndex.ToString & Environment.NewLine
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Mar 13, 2009
On SqlDataSource_Insert, I'm grabbing the users unique MemberID and adding to the db. Adding the MemberID works great. I also want to add a unique EventID for the event they are submitting, but the code that I'm using below just inserts a guid with all zeros.
Protected
Sub SqlDataSource1_Inserting(ByVal
sender As
[Code]....
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Apr 25, 2010
does any one have a sample code for creating user accounts in project?
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Nov 9, 2005
I made project using VB.Net 2005 with multi languages, the first form is MDIParent form with MainMenu and toolbars also there is some changes in properties as righttoleft and text of forms.In my Mainmenu (Menustrip) there is opetion to change the UI Culture and I have already done but I need to change all texts in the form as mainmenu items anf form properties.My quetion is: how can I reload my form again to read the new texts names and mainmenu items names from resx file?
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Apr 13, 2012
This is the code I have in one button and I have 2 listboxes that will be filled with the info it gets.This code should compare 1 avi file to one jpg file and see if they have the same name. If YES then it will add the avi path to one listbox. If they don't have the same name OR the .jpg doesn't exists it will add avi path to another listbox.. But currently it is adding the avi name to both listboxes.
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Nov 28, 2010
I have a ComboBox with several names within it. The names are sourced from a database. Once the user has selected a name from the ComboBox, he must input the no. of hours from another ComboBox and then he is able save it to a .txt file through a streamwriter.
Here is a little image I just put together:I want the file name of the .txt file to be whatever is selected from the first combobox. So, by using the example shown above, the file would be called bob.txt. Is this possible?There shouldn't be any save file dialog or anything, I want it to be automated and the name of the .txt file to be selected from the ComboBox.
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Nov 2, 2009
I'm trying to do something like this: when i press a button a dialog opens and then i choose files, the files names should go into the listbox
Private Sub pxBrowse_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles pxBrowse.Click
Dim dr As
[code].....
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Dec 13, 2011
I want to fill a listbox with file names of the specific extention. This is my code , does not work.
lstClips_ListBox.Items.Clear()
If Not FolderExists = My.Computer.FileSystem.DirectoryExists(PowerPointDir) Then
MsgBox("This Directory does not contain any PowerPoint files" & vbCr & "You need to load the files now...", MsgBoxStyle.Information, "Warning - No Media Found")
[code]....
If i take away the DIR name and the Exten then it fills with ALL the file names, not what i want.
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Oct 20, 2011
The code I have is:
vb.net
Dim zipFiles(0) As String
Dim x = 0
[code].....
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Jun 16, 2009
I want the files names in a specific folder to show in a combox box. How can I accomplish this?
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Aug 5, 2009
I need to send a switches and a filename to a command line application.First I'll need to get a collection of files that can range from 0 to an infinite amount.Then I can start the process with the correct switches. Normally, within the command line application, I would specify the specific filename and send it as an argument to the application.However, I'm not sure how I would do this. The names of the files have to be preceeded by a specific switch. I can't remember the switch right now, but we'll call it [b]-f[/f].[code]So, I need to figure out how to send all or each of the file names as an argument.
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May 20, 2010
how do I DIM a variable's name using previously declared string varialbes? I have been using PERL for processing data stored in text files but I now have a business need to use VB2008. I would like to do something like this:
dim name1 as string = "ABCD"
dim name2 as string = "123"
'here is the part that I don't know how to do - create a 3rd variable name concatenated from name1 and name2:
dim string.concat({name1,name2}), or maybe use a counter in a line like 'dim namex as string' with x being a counter value.
Essentially I want to dim variables using text strings extracted from a file. In PERL I have declared literals and arrays, such as 'my @$name1', which creates an array named with the contents of $name1. In VB2008 I am not sure how to make this work with the DIM statement.
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Apr 11, 2012
I'm working on a program that get's a file list from an FTP server and it's getting it as one giant html string, here's what I'm getting:
[code]...
Alternatively, if anyone knows how to get an ftp file object using .Net 2.0 instead of an html string that would be even better.
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May 25, 2006
I am experiencing a problem when trying to convert a rather large VB6 application into a .Net 2005 application. Everytime I try to convert the project I get the following error: "Upgrade Failed: Exception occurred: Can't use character device names in file names"The weird thing is i have tried to convert the project using .Net 2003 and I do not get the error, it does convert.
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Aug 5, 2011
Lets say we have an Access file in a well known path (i.e. "C:MyFolderMyFile.mdb"). That file does not have a primary key set on the table we are interested in . Is it possible to set one of the fields as a primary key (for example the "ID" field , which is also an AutoNumber data) ? And one more thing : I'd like to change the name of a field on that table . For example , lets say there is a field called "My Field 1" (note the space characters) and we want it to be renamed as "My_Field_1" . If it's possible , I'd like both these changes to be permanent in the data base file itself , not just in the imported DataSet ,
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Mar 19, 2009
My question is simple (the answer may not be...), What I am looking for is a way to save a file as an encrypted file (so know one can open it except in visual basic or a way to save it with a unique ending that only visual basic will recognize. I will also need to know of a way to open or load the file to.
This is going to be used in a game I am working on (and yes...I know visual basic isn't really meant for games, but it is coming together pretty well). I was originally going to have it save as a text file, but then everyone could open, read it and even change there stats. That is what this file will contain, the stats for their character, and when they load it, it will place the values into the correct spot.
I am a partial beginner or intermediate coder, I can understand code, I just don't know all there is, like saving and loading, and this is probably a little harder.
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Feb 13, 2012
I am using VB .Net to access the eBay API and store all completed orders in a database. This database is then fed into a proprietary shipping system, which can not handle an order number larger than 20 characters. eBay returns an order number like so 230407279314-680141236013 which is too long. The order number is always 12 numbers a hyphen and 12 more numbers. What I need to do, is turn this (the result can be alpha numerical) into a shorter, unique order key to store in my database alongside the true orderId (so that this can be referenced by the shipping software instead of the actual order number). The reason for the 20 character limit is the barcode algorithm used. Is there any way to achieve this in VB .Net 2010? This number can be anything unique, so long as it does not exist already (even a good uniqueid function would work, but I would have to query the database to make sure it isn't taken)
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Mar 21, 2011
How generate the unique no. 1,2,3 and so on .... on button click of each new user ..
the code mentioned below is a readwrite coding in vb.net ...
but the problem is it generate the same id for different users on button click event... but i want the no. of times button clicked the new ids will be generated
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim FILE_NAME As String = Server.MapPath("counts.vbi")
[Code].....
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Apr 4, 2012
Language: vb.net
File size: 1GB, and stuff.
Encoding of the text file: UTF8 (so each character is represented by different numbers of bytes).
Collation: UnicodeCI (when several characters are essentially the same, the most popular version will be the one unique.). I think I know how to handle t his one.
Because each character is represented by different numbers of bytes and each line has different numbers of characters, the number of bytes in each line also vary.
I suppose we have to compute hash for each line. We also need to store buffers location where the line each. Then we have to compare buffers. Then we will check whether the same line shows up or not.
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May 8, 2011
Unique constraint - these columns currently doesn't have unique values..?? I have created Unique Constraint with 3 columns. My code works perfectly but once - two users @ same time entered same data and somehow it saved in DB; after that incident. This UniqueConstraint gives me error - These columns currently doesn't have unique values. How can I check if user enters this kind of entry or how can I restrict the Entry?
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Dec 16, 2009
I'm running several different automated processes and when I get done with them, I show the results in a form with various controls.
In this form, I use Panels, Labels, TextBoxes, and TreeViews, and ListViews to display a wealth of information.
When the automation part is done, I want to be able to log this info and save that log file on the User's PC.
I thought it would be best to make a custom file extension and then hash it with MD5.
I'm pretty sure I can get all of that done. The problem is that I'm not sure how I would load that info back into the application.
Since the log files will appear on a seperate form, I can't just load the data back into the original controls.
Would it be best to create a blank template of controls and then load the data into those controls? Or is there a way to save content "as is", controls and all?
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Jun 4, 2011
I am trying to use the BGW to save a DGV to excel file, but don't know how to do it correctly, specifically setting the savefile name this code doesn't work gives me:
'System.Runtime.InteropServices.COMException' occurred
- Make sure the specified folder exists.
- Make sure the folder that contains the file is not read-only.
- Make sure the file name does not contain any of the following characters:
Ensure that your Main function has STAThreadAttribute marked on it. This exception is only raised if a debugger is attached to the process. I also tried doing the Save in the BGW RunWorker Completed event but then there is no file name. It seems I need to pass the file name the user inputs in the SaveFileDialog to the BWG WorkerCompleted event somehow
Private Sub excelexp_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles excelexp.Click
ProgressBar2.Visible = True
Saving.Visible = True
Dim saveFileDialog1 As New SaveFileDialog()
[Code] .....
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May 22, 2012
This is my first 'serious' VB2008 project. Attempting to write a comma separated file. vis:
[Code]...
Is there a better method for outputing the data, rather than having to concatinate all the elements into a string and then writing it? In the 'good old VB6' days a Print statement followed by each value and a separator would do the trick. I can't seem to find the appropriate override for the WriteLine method.
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