Saving A File With Fault Tolerance?
Nov 2, 2010
I have a situation where my program saves a file on a regular basis under certain circumstances. Every once in a while, power will fail and the file being written will be gone, I assume because it was in the process of being written when the power failed.So I need a solution that will prevent that situation while still using just one primary file to save the data.
My proposed solution is to write the file to a temporary file, and then copy the temp to the original and then delete the temp. Therefore in the event of a power outage, either the the original or the temp file will always be there. Are there any obvious problems with that method?
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Nov 25, 2011
Is there a way to get tolerance?
Now i have this:
CODE:
Than, normaly it becomes Red.
But is there a function, when it is ALMOST good?
So, then the color isn't red, or green, but yellow for example?
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Jul 19, 2011
Here are my interface and it's implementation class file. While implenting service function there is a chance to get 3 exceptions.
I need to handle these using a custom fault contract. how to implement 3 exceptions under one fault contract.
Interface:
Function GetEntities() As String
Class file that use the service Interface:
Public Function GetEntities() As String
[Code].....
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Jun 14, 2010
We all know what a Static variable means! Recently I came across a problem that I have no idea about! I even don't know whether I'm wrong somewhere or that is a VS fault. Whatever it is, I can't figure out the cause. Anyway, I simply opened a VB 2008 project and added 2 Windows forms to it: Form1 and Form2. Then I set Form1 as a MdiContainer by setting its IsMdiContainer property to True. Then I added a CommandButton to Form1 and put this following code into that:
[Code]...
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Mar 23, 2012
I'm currently working on a VB. Net web service calling another web service running in the mainframe. I was provided with the WSDL file and I generated a proxy class using wsdl.exe. Upon attempting to invoke the method of the mainframe web service using the proxy class, I encountered an exception saying "Conversion from SOAP failed" coming from a line of code in the generated proxy class.
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Dec 24, 2010
I want to maintain a FLAG in Which there is two values of FLAG
1) yes and 2) no
i want that when a form is load a Flag value is yes and The form is close the flag value is no in my back end Database
It is same like sing in person on any web site.
But my Problem is that how can i maintain it any how the my computer is turn off .
i store a database on single computer that is server.but i also want a code for on same computer
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Feb 12, 2012
Currently I am saving data from my applications by saving a text file via a stream reader as a string. I have come to a problem. In my current application, I have an array of the following structure:
[Code]...
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Dec 12, 2009
I am creating a shell for a FORTRAN application which reads a tab delimited text file.Because I am using Excel to manipulate data, is it possible to use the Excel Automation features to "save as" a tab delimited text file?The only method available seems to be a unicode text format, which does not work. Or is there another format that mimics tab delimited so that the FORTRAN application will read such a file without difficulty?
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Mar 9, 2009
I have an asp page with vb.net code that will query a database and present the user with the number of records that exist that need to be exported along with a button to export them. After you push the export button, it will prompt for a location and filename. But after that, it will not refresh the page with the new counts that now exist. Or in this case update the count to zero for the button they clicked.
[Code]
So how can I tell the page to refresh with the new counts. It almost seems like I need to tell the process to wait until after the user has finished finding the location and saving the file but I don't want to add a generic threading.thread.sleep in, I want it to only wait until they are done and then refresh the page.
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Sep 18, 2011
Currently the reports are saved as a html file called report1.html, id like to make the user enter a name for the HTML file upon clicking submit.
A little stuck on how to make the filename for the HTML file save to a input entered by the user.
I currently have:
Try
'Open new HTML file to be written
WriteHtml = New StreamWriter(Application.StartupPath & "ListHardware.html")
If Not (WriteHtml Is Nothing) Then ' Is the File Open
[Code].....
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Sep 11, 2011
i have a xdocument.load(file) and after changing some values want to xdocument.save(file)
this save is not possible because file is in use ?
nattelip Private Sub savechfid_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles savechfid.Click
[Code]...
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Apr 25, 2009
i just found a new error problem on my app.. i have a save button that saves text1. as the file name and text2. as the content.. i recently tried to save this file name on my app: HKEY_LOCAL_MACHINESoftwareC07ft5Y as a file name, and due to the in the file name, it made my app error and close without being able to save my file.. my question is, how to bring a msgbox saying "invalid characters in file name" instead of causing it to error and shut down. (just found out that registry entry is for SafeDisc-enabled products, although, i'm not fully sure..)
[Code]...
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Aug 10, 2009
I'm trying to find out if it is possible to something and really need your help.
What i want to be able to do is have a RichTextBox on my form that i can enter my description into, then when i have finished i want to be able to save it to a memory stream as a .html file.
I then want to be able to read the source of the HTML file to amend the format of the description and then display it in a webpage?
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Jun 9, 2011
Here is my current file
Public
Class Form1
Dim ScreenData(3, 4) As TextBox
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
FileOpen(1, CurDir() &
[Code]...
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Apr 4, 2010
I've been working with Editing a jpg through Hex. I have the code to open the hex of a file, but I just need to know how to write the file so it is able to be viewed as the same jpg. Editing aside, I just need to know how to write the file. Here's the code I have so far.
[Code]...
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Mar 8, 2010
I am working on a note taking application. I have got a treeview and a richtextbox. On the treeview note captions are organized in a hierarchy. When a tree node is clicked related note details are displayed in the richtextbox. I use an xml file to save and load the treeview state (including nodes, expand collapse state, image index etc). I want to include all the note details in this xml file as well. But I dont know how to save richtextformat into an xml file.
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Aug 30, 2010
I have this script that I'd like to in addition save as a xls file, also save as a .txt in the same directory, or even a different one. Can I get some guidance here?
Imports System.IO
Module Module1
Private Property fs As Object
Private Property BaseName As Object
Private Property FullTargetPath As Object
[Code]...
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Jun 9, 2009
in a winform how do i get one of those fancy windows "save file as" dialogues to appear so that the user can save a string as a file to a user-specified location on their hardrive?
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Aug 25, 2010
I am exporting my values in my textboxes to an excel spreadsheet (user clicks "Export" button on form). After it is done, it asks me if i want to overwrite my current excel spreadsheet. Is there a way that I can open a save as dialog box so I can choose what name and where to save it?
Private Sub ResultsExcelbgw_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles ResultsExcelbgw.DoWork
Dim Resultsdata As ResultsDataDef = DirectCast(e.Argument, ResultsDataDef)
[code]....
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Aug 6, 2010
i have multi columns that i want to save. i'm missing something here...just dont know what. I can get one column to save only. but i have columns like "name", "address", "phone number"
here is my Form1 code
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
ListView1.Columns.Add("Name", 100, HorizontalAlignment.Left)
ListView1.Columns.Add("Phone", 100, HorizontalAlignment.Center)
[code]....
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Sep 25, 2009
I'm rather new to vb and was wondering if someone could help me out with saving and opening files from a lan.trying to write a macro that will open and save a file from a lan drive that may have different drive letters depending on what each person wanted? I've been susessful in getting a file to open with my current mapped drive but i won't work if other people use it.
[Code]...
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Apr 16, 2010
I want to do that when i load form that saved picture is there. I tryed to make code but its dont work , dont show errors too. Mabye its not possible to do that.
Private Sub ToolStripLabel1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripLabel1.Click
Try
Dim dataloader As New System.IO.StreamReader("c:data/Picture.bmp")
PictureBox1.Text = dataloader.ReadToEnd
[code]....
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Mar 24, 2009
Dim c As Integer Dim savef As New System.IO.StreamWriter("C:UsersOwner emplog" & CStr(c) & ".txt") c = c + 1 savef.Write(TextBox1.Text) savef.Close()
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Nov 19, 2010
But I would like to save in then retrieve later.So far I've declared it as
Dim ActiveScoreTable As New NewGameDataSet.GameTableDataTable()
Dim ActiveScoreTableDR As NewGameDataSet.GameTableRow = ActiveScoreTable.NewGameTableRow()
1) But how do I get to the save command?
[code].....
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Oct 22, 2011
currently in my vb app i do the following to create a directory:
DirToCreate = "c:BulkEmailAttachments"
Dim
di
As
[code]....
No problem creating the directory on the same server as the web but now I have a requirement to be able to save the file on a different server where our db resides so I created a share named "BulkEmailAttachments" on that computer and tried the following:
DirToCreate =
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Feb 24, 2010
Is there a way of saving a form to file, so that it can be loaded at future point, with the data that it currently contains? The other way to do this that I can think of is to save the data that it contains to a file and then load it into the form, are there anyothers? The form has a tab control so printform to file won't help as I beleive I'm right in saying that the tab control won't be usable, as only an image is saved?
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Oct 8, 2007
The following is code is for a windows form that I took straight from the code project website. Everything is working fine except when I stop recording, it's not saving where I want it to. I think the problem is the very last sub, but I cannot figure out what it is.
[Code]...
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Mar 23, 2009
I try to create an image and save that to a file. I would like to rotate text
I have gr.TranslateTransform(35.0F, 0.0F)gr.RotateTransform(90.0F)
which rotates the image on a panel but how do I do that with an image I'm going to save to file. I'm trying to create the image in memory with no form.Private Sub label_inches( _
[Code]...
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Jan 27, 2010
I'm trying to get an image on my application to save in the save file as a binary.
Private Sub SaveToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveToolStripMenuItem.Click
Dim save As FileStream
[Code]....
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Apr 15, 2012
How i can make my project portable.whenever i run my project on another computer it gives an error for wrong path. any code which can choose its path in resourses or debug folder to make a file in project.and whenevre use that file its easily accessable without any error.and file saved in a name series.
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