Insert A New File (with A Unique Filename) Between Two Given Filenames?
Sep 1, 2010
I have a sorted array of files saved in the following format of filenames:
XXX
XXX_XX
XXX_XX_XX
I want to insert a new file (with a unique filename) between two given filenames (which could be in any of the 3 formats above).
For eg., a new file between 401 and 403 could be inserted with name 402 and a new file between 401_01 and 401_02 could be inserted with name 401_01_01. etc
The idea is to conform to the sorted list. Is there a way I could generate filenames for the files to be inserted, given the two filenames between which it needs to be inserted?
I have written some code that generates an output file from an external executable. I would like to insert the current date and time into the resulting filename. In the pi.Arguments line (shown below) the /l= creates the output file. I would like the name of the file to be Trustee_Restore_YYYYMMDD_HHMMSS.TXT.
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click Dim p As New Process Dim pi As New ProcessStartInfo
[code]....
Everything works, except I would like to insert the date into the output filename.
I have a table with one column auto number key ID. I have an index on another column as unique value. Every time that I try to add a new value into the ddbb that already exist on the index column, I got an alert using on error procedure. This is fine, but since the error is got when the insert command is execute a new ID is created and next time a correct value is added, it means, not duplicated, the ID number jumps. For example.
auto ID=1 new record (OK) unique value auto ID=2 new record (OK) unique value auto ID=3 new record (got error) not unique value, no new record added
[Cdoe].....
The question is, there is anyway to check if the value exist before to do the insert() command? or anyway to avoid ID number lost.
The ddbb is open using gridview with sqldatasource.
I am using vb.net code and sql server 2005. I have textbox in my application which is linked to a sql column. Now I want to check that it should not insert any duplicate record in table. I mean everytime it insert in table the value should be unique. data is inserted in table on button click.
I am using objectdatasource for sql connectivity and FormView for dataentry.
For my database I need to create unique numbers and insert them in the column "ID". Can I add them via a SQL query? The numbers would simply be 0001 to whatever.I'm using the "Show Table Data" gui.
I am using SQLite and what I am doing is passing a simple SQL statement to the database, however I want to also return the Unique ID that the insert statement has been entered to, however I am not sure how to do this within a single SQL statement.
My code is below: Dim mySQL As String = "INSERT INTO DisplaySetFolderTbl (parentID, folderName) VALUES ('" & selNode.Tag & "','" & Trim(Me.txtName.Text) & "')" Dim cmd As New SQLiteCommand(mySQL, MISData.Instance.dbDRV) Try cmd.ExecuteNonQuery() Catch Exit Sub End Try MISData.Instance.dbDRV is the connection string
[code]I have one button to play all the stuff, but it needs the full path to the mp3 file to play, but I only saved the File name to the Listbox.So basically, I'm wondering how to be able to still select files in the Listbox and press Play, when the Listbox's Items do not include the full path to the actual files.I know I could just add the full path to the listbox from the beginning, but I don't think that looks good.So maybe someone can point me in the right direction, or maybe provide me some source code.
Quick query...I'm trying to scan a long string and return any values that occur between the tags <FileName> and </FileName> I've got a bit of code here to use regular expressions to return the position of the occurunces of both substrings..Just wanted to find out if there is any way to scan for both substrings within one loop (as im currently doing 2, one for the first substring and one for the 2nd) so I can use something along these lines:
to msg box the value between the substrings...either that or another approach to return the value between the 2 substrings (it can be of variable length)
Dim patternstart As String = "<FileName>" Dim patternend As String = "</FileName>" Dim matchesstart As MatchCollection = Regex.Matches(XMLRESP, patternstart)
How would I do that? Sample code is below that demonstrated that the file I opened contained the full path and file name.
I want to extract just the path and serialize that to the user.config file as a UserSetting value. Then next time the user opens the dialog box, it uses that saved path string to go immediately to the location previously used.
If openFileDialog1.ShowDialog() = DialogResult.OK Then Properties.Settings.Default.persistConnectionType = openFileDialog1.FileName Properties.Settings.Default.Save();
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)
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.
I'm using the FileSaveAs dialog control to allow the user to select a filename to save a file either as a doc file, an rtf file or a pdf file (that part was easy).However, after a bit of testing, it seems that the file extension doesn't automatically change when selecting the different file types.If the filename in the dialog is Foo.doc and I select FileType *.pdf and click "Save", my app still tries to save the file as a doc type.Virtually every other MS app automatically changes the extension to match a selected file type from the Office Suite to Paint. here's my code:
Dim dlg As New SaveFileDialog dlg.InitialDirectory = m_sReportFolder dlg.FileName = sProjectName & ".docx"[code]......
I have a Listview on my form with different files. I can selet a file en open it with the proces start method. To open the file i use the OpenFileDialog method and select the filename. This work very good. With the code below.
My question is if there is a method to get the selected file without using the OpenFileDialog Box. So when i dubbelclick the selected file the proces will start with open the selected file. Something like:
proc.StartInfo.FileName = Me.SelectedCell.FileName instead of proc.StartInfo.FileName = Me.OpenFileDialog1.FileName
PS) May be i can preduce the Filename using the OpenFileDialog method on the background.
Private Sub ListView1_MouseDoubleClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles ListView1.MouseDoubleClick If Me.OpenFileDialog1.ShowDialog() = Windows.Forms.DialogResult.OK Then
I encountered the error:The process cannot access the file <full file path> because it is being used by another process.during System.IO.File.Delete(filename)I have opened the file using:pctPhoto.Image = Image.FromFile(filename)before I delete the file.
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")
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.
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?
I have written a simple script to get a bunch of lines from a text file (they will be filenames eventually) which are split by new lines and puts each one into an array..
Dim ary() As String Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click If My.Computer.FileSystem.FileExists("C:MenuFiles.txt") Then
[code]....
The only thing I can do for now is either use the substring function to remove the first character from all array values after 0 but I don't like that because it's messy and what if the split "works" as I want it to one one of the lines and knocks of the first character when I don't want it to.
In my vb.net winform application, I am moving the file (ex: sample.xls from one folder to another. If file already exists with the same name, the new file name should be incremented (ex:sample(1).xls). How can i acheive this?
I get the common error: " 'File Name' is currently being used by another process..."
My problem is that I have two forms. If the file doesn't exist in the one then it creates the file and opens up the other form, if the file exists it doesn't do anything, however, in the other form that it opens up I have it "attempting" to write text via StreamWriter. But my problem occurs when the StreamWriter tries to open the file for writing, that is when the program tells me that the file is currently being used by the other process.
In my first form I close the form via Form.Close and all I am using to create the file is System.IO.File.Create. Now I know that the System.IO.File.Create is causing the error because I have this process checking the very first thing on the program load. I am trying to find a work around the System.IO.File.Create but no luck here... I am trying to create a .txt ... lets say test.txt .
i want to Encrpt a file . i write the code.System.IO.File.Encrypt(FileName). But file is not Encrypt. it just change the color. but when i open it in note pad. it open currectly. how i use file.Encrypt function
I need to aquire the full path and filename of a file to add them to a database. I'm currently using OpenFileDialog and in debug it shows that when I select a file, the Filename property is the files full path with the filename. What is the best practice for extracting the full path from FileName?
I have an application, that I have integrated into Windows Shell, for this example I will use Notepad. You can right-click a file on the desktop and select 'Edit with Notepad', this launches(if I am not mistaken 'NotePad %1') notepad, and opens the file right away for editing.For my application I need this to get the file name, so basically I would right click on my application, and it will run and have the filename for me to use inside the application.
I'm looking for a way to get the name of the file that's currently selected in a Windows Explorer window, desktop included, without having to use a FileDialog or to copy the path to the clipboard (GetFileDropList). I've been looking into the System.IO.Path.GetFileName() an many more methods like that, but I haven't found anything that does the trick.
I want to create VB.NET code that will change the filename of selected image files that are already stored on my ISP's web server. I know how to do this by reading the image into memory and then saving it as a new file. However, I would prefer not to regenerate the image. I just want to change the filename. Is this possible?
