The following code writes some data on an xml file. If I want to write on the same file twice the code overwrites the old data with new ones. How do I update the data instead of overwriting them? (i.e., write at the end of the xml file instead of overwriting the data)
Dim XMLobj As Xml.XmlTextWriter
Dim enc As New System.[Text].UnicodeEncoding()
XMLobj = New Xml.XmlTextWriter("C:" & current_scen & ".xml", enc)
[code]....
I have implemented the filestream feature of SQL Server 2008 in a VB.Net application. I can insert files, and then retrieve/view them just fine. However, I have huge problems trying to update a file. Eg. The user selects a file from the grid which I execute via process.start. If that file is a .txt file, the user may choose to edit it. In case that happens, I need to save the changed file back to the database. So far I have failed to do that.
What I do, is take the retrieved file, copy it (cause i got some errors about it being used), and then Process.Start it. After that, via .NET filestream, I convert the file to bytes and try to update the record. SQL Profiler and a manual SELECT on the varbinary(max) column tell me that the file is updated properly, but the very next try to retrieve it I get an unchanged file.
After that I also tried to update the file by changing its File-System Version, but the file still wouldn't seem to update. Does Anyone have a code sample of how I can achieve this operation? Like 500 sites on the internet have examples of how to Insert And Retrieve the file, but not a single example on how to update. This is how my second attempt of trying to update the file via the filesystem looks like. The code for inserting/retrieving is very similar and it works properly. [Code]
I am developing an application that Monitors a specific folder for file changes such as modify deletion, update, etc. The only problem I have is , the application doesn't fire up File events.
Here is the code:
Imports System.IO
Imports System.Diagnostics
Public Class Form1
[CODE].............................
I have a csv file that needs to be automatically updated on a daily basis. I am writing a vb.net app to accomplish this. However, Im having issues with the entire process.I need to be able to read in a csv file, manipulate the data and then update the existing file. I have dabbled with using the Excel objects but I need some assistance.
View 6 RepliesI create a project using query sql ( Select, Update,Delete,Insert ) in many various way. example by Select with condition ..etc someone work in programing field. tell me that you are not profession in using vb.net , because you have to use OOP instead all of these Sql query. because if you want to make any update on your program after start to work on the Pc you will open your project on design and change the code. but in OOP you will make update on class and then put it as DLL file in the file of program.
View 5 RepliesI'm making a game in Gamemaker and i'm using VS2010 to create a launcher for it. The launcher works like the Minecraft launcher:
it has to check a file from my server, then compare it to the local file, and if they aren't the same, the launcher has to re-download the game.exe from the server.
This all has to happen when i click play. To make the game start i use
Process.Start(My.Computer.FileSystem.CurrentDirectory & "\game.exe") i've put the game in the solution explorer.
put 'copy to output directory' to 'copy always'. i appareantly had to do that according to a tutorial to launch game.exe. Now, as i've said, i'm quitte new to VS 2010.
I am working on a program using VB.Net 2010 which will enable me to setup groups of files & folders for back up with syncing capabilities etc. I have a concept program which is based on some sample code I found out in one of the VB.Net forums. I have modified it from a command line based program to a form based program. At the moment I consider this code to be a "concept" program which once I have the various copy/sync routines developed and debugged will be integrated in to another program I wrote for
creating "Back Up" groups to automate the process. There are some 3rd party programs that do similar things that I want to do such as Microsofts Sync Toy, but none of them offer the grouping and exclusions options that I am going to program in to this backup/sync program.
So here is my problem, I have the included code taking two folders, a source and a destination, and copying everything from the source to the destination. It will skip over any unchanged files/folders and will delete anything found in the destination folder that is not found in the source folder and it will update all files in the destination folder that have a newer version in the source folder. In other words it will mirror image the source to the destination but will be smart enough not to copy unchanged items from the source to the destination thereby saving a lot of time. The sync part of the program is working fine, the displaying of the progress and results is not.
[Code]...
i used to know a way of updating a file by adding some code in the form load and change the version of the file . and than you upload the exe to a site. but most sites now days dont allow to upload exe . is there any other way to update a file.
View 7 RepliesI have a csv file. I need to open it, delete whole row on basis of a column value, Update few of the column values and save the file as .dat file. I am using VB.net 2010
View 1 RepliesHow do i create an update file for my existing application.
for example : i made an application that have 2 or 3 function which is lock or disable. when people want to unclock the function, they have to install or run updater application (in EXE). so how do i create this UPDATER application for unlock the function?.
how to set/update the exe file version, can't seem to find it in the project properties
View 2 RepliesSo i want to be able to change the information on the datagride and when i click update i want it to update to the db file. However I get the messege "The DataAdapter.SelectCommand property needs to be initialized." Here is my code:
Public Class Form10
Dim constr As String = "Provider=Microsoft.ACE.OLEDB.12.0;" & "Data source = test.accdb"
[Code]....
my application reads from an .xls file I put on google sites. The problem comes when the application modifies a cell and tryes to save the file on the site, actually it does nothing since to read something from the site is easy, while trying to save something requires a connection with username and password.
So, how can I pass the username and the password to the application? and even most important,can I encrypt it so that the person who uses my application could not see the real trafic details with a http sniffer?Right now I am using this code:
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
Dim xlWorkSheet As Excel.Worksheet
[code].....
How can I update an .mdb file via VB application? I'm able to add but i can't seem to figure out how to edit.
Dim cn As New OleDbConnection
Private Sub btnOk_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOk.Click
[Code].....
I am trying to update an AutoCAD drawing (adding some blocks) without opening the drawing and run into some problem.
View 1 RepliesI made an example of the program that I am making because I didn't want to show the actual program for specific reasons.[code]...
View 11 RepliesI have an ini file that looks like the following that gets exported from an old system that I dont have an admin function for.[code]...
View 2 RepliesI make changes on my program very often so after I change something in application I have to go from PC to PC and copy paste new .exe file or .dll. I have more than 100 pc. I was thinking on this way but I do not know how I can make it; I want run application in the server, if got any update files server should update to rest of the pc which are online. In this case I do not need to walk around and copy-paste files every time I make any change in application.
View 1 Repliesi m update my install software by click button: by using this codeImports System.Deployment.Application
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[code].....
I am trying write a code which remember what shortcut keys are selected by user last time . Its can be done by (My.settings) but when the *.exe is moves from it location it reset. so now i want to store it in a resource file.[code]...
View 3 RepliesI am using the read all lines to read all the contents of a file and store it in an array. I have used that data and display it to textboxes by splitting the lines. I want to now all if the user change the text in a text box, I want to write that updated information back to the file.
View 2 RepliesSupposedly I create a file called "hi.txt" and I use Process.Start(filename) to open it. then I File.Opentext(filename), edit it and close it using stream writer/reader, while I still have that file open.
In order to see the changed text I need to close "hi.txt" and reopen it.
Is there a way to automatically do that? Been experimenting a bit but with no luck.
My Text Folder is "C: ext"If I m Past Any Text file in This Folder Then My ComboBox Update its Name I want only textfileDont Scared With My Silly Example.?
View 2 RepliesI am using the following code to copy a file:System.IO.File.Copy(strOldFile, strNewFile)
But the trouble is that the newly-created file inherits the old file's timestamp. Is there a way to force the timestamp to update?
the same txt file will be updated from time to time and it will be imported agian to the database.what is the code that will add the new data ?
Private Sub sendtoaccess_Click(sender As System.Object, e As System.EventArgs) Handles sendtoaccess.Click
Using Conn As New OleDb.OleDbConnection _
[code].....
When I click on the Save button in the interface it executes the SaveData() steps. But I am being told that I need to update the date stamp on the Access file. How I would make this change?
Private Sub ProblemTableBindingNavigatorSaveItem_Click
(ByVal sender As System.Object, ByVal e AsSystem.EventArgs)
Handles ProblemTableBindingNavigatorSaveItem.Click
SaveData()
End Sub
Private Sub SaveData()
[Code] .....
My company puts out a monthly newsletter which I host on our internal website. I have a page for the author of the newsletter to upload the latest version. Once the author has uploaded the latest newsletter, he sends a broadcast email to announce the new newsletter. Employees invariably check the new newsletter and send feedback to the author with corrections that need to be made.
Once the author has made the necessary corrections (typically within an hour of sending the broadcast email), he revisits my page and replaces the latest version with the updated newsletter.
Immediately following the replacement (or update, if you will) of the newsletter, anyone attempting to access it gets a 500 - Internal Server Error.
My IT guy who maintains the server cannot delete/rename/move the file because of a permissions error and has to do a lot of convoluted things to get the file deleted (and once the file is deleted, the author of the newsletter can re-upload the corrected copy and it works fine.
My IT guy and I are pretty sure that the problem stems from that I'm trying to replace the file while IIS is actively serving it to users (which I thought of and thought that I had coded against happening).[code]...
i want update .mdb file data using Textbox
Dim connStr As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=staffdata.mdb"
Dim sqlStr As String = "Select * from staff"[code]....
how can i update .mdb file data using Textbox,for example: when i click update button afterinput the password in TextBox1,the staff table will update my new password
I'm trying to update a database with data from a CSV file. I have got this far but I am not sure where to go from here:[code]
View 2 RepliesI need to update an ini file from a 3rd party application (From within my VB.net app)
The ini file does not have any [Section]'s, what method should I use to readwrite values to this file?
+----------------------------+
| SERVER |
+----------------------------+
[Code]....
