VS 2008 Reliable Way To Get #records In A File?
Jun 29, 2010
I am reading a file and loading the records read to a database. At the end of this process there needs to be a check that the counts match. This code was already written and the comment doesn't give me great confidence in it: ' Description: Get the number of lines in the record file. Thisshould give a good indicator of the number of recordsIt should or it will, using this code?:
Dim i As Integer = -1
Dim line As String = ""
Dim sr1 As StreamReader
[code]....
Then i is returned as the count of records in the file. Is this the best way and is it reliable? Records in the file are delimited with a newline
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Dec 29, 2011
How do I update records in a dataset with records in a transaction file?
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Dec 29, 2010
I am looking at Visual Basic 2008 Step By Step. I need to read a flat file and insert the records into my SQL database. My code so far:
[Code]...
The INPUT line needs to be fixed. From what I can see, I need to move it all to a single field and use a split to parse it, correct? As I look at the entries on this site, all the code seems to use stream readers. Why would the book not do that? Am I missing something?
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Apr 17, 2010
I am working on creating a program that records animal data (wombats) and stores it into a database, using vb.net. I am trying to add new records into a database but every time I click add, to execute that, there are duplicate records that gets added. How do i write the code so itonly adds it one time. I am using a data reader. Here is the
[Code]...
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Aug 23, 2009
I use it as a timer(obviously) to get the lapsed time of an upload. Something that took 2 secs it said 12. [code] Everything looks right. and it seemed to be working. Just in no way did it take 8 or 12 secs to send
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Feb 16, 2011
Is there relialbe alternative to Timer class in .Net?We are having issues with System.Timers.Timer and System.Threading.Timer, e.g., they start immidietly, or sometimes fire out after long period of inactivity (after 49 days).I've seen that there seems to be a lot of issues with them like here: url...We can not use Forms timer.We are thinking to pause the thread for certain period of time instead of the timer...
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Dec 2, 2010
What is the most reliable path to export data? I have a Access db used by many. I have a button that export the data to the desktop. It works great for most but a few people get a error that it is open exclusively or they need permissions to view.How can I fix this error? [code]MsgBox "This data has been sent to your Desktop", vbExclamation, "Request Complete"
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Jul 13, 2011
I see so many programs take command-line arguments with flags, for example gcc hello.c -o hello. Of course, I can implement that in my application:
Dim args() As String = Environment.GetCommandLineArgs()
Dim oi As Integer = Array.IndexOf("-o", args)
If oi > -1 AndAlso oi < args.Length Then
CompileTo(args(oi + 1)) 'Or whatever
Else
CompileTo("out.exe") 'Or whatever
End If
But it's ugly and annoying to use, prone to errors, and inefficient. What's the better way that I keep overlooking?
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May 4, 2012
Does anyone know of a reliable way to cancel the ItemCheck event on a CheckedListBox? I am in a situation where the ItemCheck event should basically discard changes on a form, however, if the person decides to cancel the discard I would like the ItemCheck event not to fire so as not to change anything.
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Jan 20, 2012
I eyed VB.NET 2010 Express and created the damn app. It's up and running and it does what it's supposed to do (in v1). Now I'd like to distribute it for free while:
(1). Have a reliable way of knowing (and everybody can check this out) the number of downloads.
(2). The app cannot be passed from one user to another, but has to be downloaded from the reputable biz (there can be more than one biz) that accurately provides the number of downloads.
(3). I can have total control over the app (once it's downloaded by the users), that is if I want to inform the users of updates or whatever, or if I want to add some ad windows to the form I can do it whenever I want and how I please.
How do I do (1) to (3)? What am I supposed to read to do (3)? ADO.NET and ASP.NET? Any shortcut? What's the easiest way of doing it? I'm not sure I'm looking for a career in programming, for now I just want to take this app off my shoulders and go back to daydreaming.
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Apr 28, 2011
how reliable is LastWriteTimeUtc to synchronize 2 folder on 2 different computers? what problems could rise using LastWriteTimeUtc.is there a better way to see if a generic file is of a newwer version?
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Aug 20, 2010
We have a VB.NET program that needs to periodically call a function in an external, unmanaged DLL to communicate with our legacy application. We are having a problem with the application (seemingly) randomly not being able to find the DLL with the unmanaged code. Currently we use DECLARE FUNCTION blah LIB for the unmanaged code. Would it be better/more reliable to use DllImportAttribute instead? Or am I missing something else?
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Aug 2, 2010
I am creating a program that allows a person to enter details about their farm, stock, and machinery in order to electronically keep track of all of the information. I have created the forms and done all the coding for the data entry, and now what I would like to do is allow the user to delete a single record from the .dat file. I am able to delete it from the LstBox (using a "Delete Entry" btn coded simply with
lstvehicles.Items.RemoveAt(lstvehicles.SelectedIndex)
(using the vehicles section for examples)), but I am unsure of how to delete it from the .dat file as well, to prevent it reloading upon data change / program reload. Also I would like to be able to have a reminder come up on the program start up that gives a reminder to (in the vehicles instance)when a vehicles rego is due, the date being associated to a date that is entered into the same lstbox data using a datetimepicker.
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May 7, 2010
i want to take a comma delimited text file and then select all unique records based on one of the fields in the text file. should i read the text file into a data table or just use a data reader?
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May 17, 2006
I can retrieve records from my Database fine, but I'm having trouble updating records. I am getting a syntax error on [code] I get this error when I change the Last Name (Row 0, Column 1). [code]
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Dec 4, 2009
I have a file with information about people, and use the following code to show the contents ofthe file in a list box..
[Code]...
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Dec 25, 2009
I m newbie for VS2008 i want to save my project data to one txt file and load from txt file how can i do this ??
[Code]...
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Mar 27, 2012
I'm working with XML for the first time and I'm not able to read the number of records from an existing files. As of now I have my records this way:
-<DataNodes>
-<Data>
<numOne>25</numOne>
[Code].....
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Aug 15, 2011
just as I would read an SQL file in order with code such as:DCReader02 = DCCommand02.ExecuteReader()While DCReader02.Read() End While I am looking for the equivalent code to read each line of an Excel file until end of file. The Excel file was opened with
Microsoft.Office.Interop.Excel.Application / Workbook / Worksheet coding.
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Mar 22, 2012
I'm trying to save the contents for a listbox, which can contain up to 10 records(items) as follow:
1 + 1 = 2
1 - 1 = 0 and so on.
The code that I currently have is recording only the last item of the listbox
Below what I have so far:
Imports System.Xml.Serialization
Imports System.IO
Public Class SerializeData
' Save - serialize the object to disk...'
[Code].....
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Oct 27, 2009
how to get records into oracle database delete from db & update the records i have successfully connected my vb 2008 win form with oracle 10g.
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Jun 7, 2011
The question is quite simple for all of you . I have a binary file . A description for this file says that
[Code]...
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May 22, 2010
I am using a For Each Next type loop to read a records from a datatable and add records to a second table.Under certain circumstances, I add one or more records to the first table that I want to process.The problem is that the added record is not in the original datatable.The For Each...Next loop goes dutifully until the datatable records are processed, but the added record(s) do no get processed.How can I "refresh" the datatable and process the added records? [code]
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Jan 23, 2012
here is a snippet of the file,
Year 1
mandatory
COM137,Mathematics for Computing,20,2
COM140,Computer Technologies,1-2,20
COM147,Introduction to databases,1-2,20
Year 2
[Code]...
in here is where i am having the problem i don't know how to get all the information i need into one specific array element within an array.. i want to get the year and the module status added to the end of an array element
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Jun 10, 2011
I have problems to print the records which is saved in text file. It prints whatever in between the textfile but does not print whatever contents in the textfile.
Public Class Form1
Private Sub pd_PrintPage(ByVal sender As Object, ByVal ev As Printing.PrintPageEventArgs)
[Code].....
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Jun 12, 2011
how to update records from 1 text file into 2 different sql database.
Name of the sql Table is Payment2SQL_Success_P() & Payment2SQL_Success_E()
is the code below is on the right track.
Select Case "AGENCIES"
Case AGENCY_AV Or AGENCY_SR Or AGENCY_IP Or AGENCY_TM Or AGENCY_MS
[Code].....
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Jun 12, 2011
I would like to bind data with a CheckBox. I am using VB 2008 Net 3.5. I want to use several checkboxes to identify records within a name $ address masterfile. Any given name can be identified in one or mre ways. For example John Smith can be an employee, a vender or a client. I have setup seven fields in my database as bits and in data sources I have labeled them as CehcekBoxes. However, I can not bind a CheckBox to a field.
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Apr 24, 2009
I am woking on an application in which records of a table are stored in another table. In case of duplicate records they will not wriiten to the table and they should be written in a log file.
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Jun 9, 2009
How do you create a separate file that records and adds the favorites to so you dont lose them ect
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Sep 21, 2010
I need to export data to a text file either in VB or SQL and it has to be formmatted like this. The data is in a SQL Databse[code]...
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