System.IO. FileInfo Performance Loss?
Mar 9, 2009
I'm having bizarre performance results of the methods in FileInfo class.I'm using 5 methods of the FileInfo class in the Paint event.The datagridview is bound to the dataset.First the application searches files in the RecursiveSearch. When rows are added to the dataset the Paint event is fired and the rows displayed are filled with extra information from the FileInfo class . In this case the performance is very good. If I remove the DoEvents() from the RecursiveSearch the 5 methods of the FileInfo class become very slow (about 0.25sec for each line of code)!When the search ends, the user can scroll down to see the other files listed.At this point the Paint is again fired. This time the 5 methods of the FileInfo class are again very slow!
Private Sub RecursiveSearch(ByVal sPath As String, ByVal strPattern As String) System.Windows.Forms.Application.DoEvents() Try Dim strFolders() As String = System.IO.Directory.GetDirectories(sPath) Dim strFiles() As String = System.IO.Directory.GetFiles(sPath,
[code].....
View 3 Replies
ADVERTISEMENT
Jan 28, 2010
I have a utility that is a simple exe that is not installed compiled with VS2005 and works well. But when I upgraded to VS2008 the utility can no longer locate files in the active system folder. I have UAC turned off and am logged in as the Administrator and it still can not locate a file that I can see in Windows Explorer. The file I am looking for is PakMgr.exe.
View 1 Replies
Mar 19, 2012
I have used log4net in winforms before. First time using with a wpf console app. The console shows up and the console appender works exactly as in the winforms app. However in winforms I never had to give the full path to the log4net xml file. It is located in the same place where all the cs files are. (the default place where VS 2010 puts all its source files. So
XmlConfigurator.ConfigureAndWatch(new System.IO.FileInfo("log4config.xml"));
works in a winforms app's Program.cs->main() but for the wpf version where I have my own Startup class with my own Main() (instead of the autogenerated and hidden main()) I have to change the line to look like this
XmlConfigurator.ConfigureAndWatch(new System.IO.FileInfo(@"c:fullpathlog4config.xml"));
This took me quite a while to nail down so I thought it may be worthwhile to figure why this is so. Anyone know ? I am using log4net ver 1.2.10.0. The log4net dll and xml both have copy to local = true in winforms and wpf.
View 3 Replies
Sep 12, 2010
I'm trying to create a song playlist for my application.I'm using system.io.fileinfo for displaying playlist file names by listbox and a second listbox for reading playlist files' contents.
Public Class Form1
Dim fi As IO.FileInfo
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
[code]....
View 14 Replies
Oct 12, 2011
I have the following VB function which takes a FileInfo object as a parameter:
Public Shared Shadows Sub Start(ByVal filePath As FieldInfo)
XmlConfigurator.ConfigureAndWatch(New System.IO.FileInfo(filePath.ToString()))
End Sub
In another class I have the following code calling that 'Start' method. But VisStudio indicates there is a problem with the 'FilePath' argument that I'm passing.
[Code]...
View 1 Replies
Oct 31, 2008
I have built a recursive file system crawler that amasses file system data from a file share. I use the FileInfo object to get my metrics, however, I am finding that in especially deep file structs, that the ol' 260 character MAX_PATH MS bug crops up ':8-0:'. This puts me in my angry place, since I do not seem to be able to get around it no matter what kind of programmatic tom-foolery I try.
So far, I have tried:- converting to 8.3 format --> no good path + filename STILL is > 260 (believe it or not) - tried to go with a Straight low-level API approach
What I have found is some pretty Sketchy information regarding VB implementation of the kernel32 api's in this regard (just try & find a createfile port for vb.net, I couldnt)
Anyway, I guess I was hoping that someone else has run into this pain, and knows how to make a surefire way to get a file's information (size, dates esp), regardless of how long and painful the path may in fact be...
View 4 Replies
Apr 12, 2010
I have this unusual problem with mailing from my app. At first it wasn't working (getting unable to relay error crap) anyways I added the proper authentication and it works. My problem now is, if I try to send around 300 emails (each with a 500k attachment) the app starts hanging around 95% thru the process.
Here is some of my code which is called for each mail to be sent
[Code]...
View 2 Replies
Sep 15, 2010
I had a large application that I needed to develop into two separate applications with different customer needs. I created a new VB.Net application and copied/imported all the forms and classes into the new application. The new application works but, for some reason all the forms have lost their 3d look, all the textboxes have a flat look now in the new application. It is as if I have lost a setting somewhere that controls the 3d look of the controls. I have checked the properties of each control and they still have the 3d option selected, and cannot see what else could be changed to get the 3d look back.
View 2 Replies
Feb 19, 2009
I need to compute the percentage of games won and games lost. I keep getting errors and it's driving me up a wall. I've changed my code so many times that I don't really remember what it was like when I started.
Private Sub btnPercentage_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnPercentage.Click
Dim team As String
[Code].....
View 6 Replies
Apr 28, 2009
I m using vs2008 with vb and sqlserver. I just attached a .sdf database file to my project. There is a form to insert data in products table and a dgv to show that data. Everything is working fine, i inserted the data and dgv is also showing the data. But when i tried to see that data from server explorer, thr is no data, table is blank. Then again when i run my project thr is no data in DGV also. So problem is that when i entered the data and retrieve back the data in dgv,evrythng is fine,but when i tried to see my data from server explorer, data is lost. Why data is not comtted to my .sdf ?
View 4 Replies
Jan 2, 2012
I trying to create application that can read loss bmp with bmp constructor, what I mean loss is bmp without header, here the sample of loss bmp (zip is including with original bmp):
Download(you can see the different by comparing the original bmp and loss bmp with hex editor, the different is loss bmp don't have 54 bytes header bmp) Height of image is 126 px and width image is 45 px
my question is how I can preview that loss bmp in picture box? someone of my friend say, its need BMP Constructor to preview bmp properly but he doesn't know the code, please give me the code..
View 13 Replies
Oct 26, 2010
VB 2008 Express edition. I'm pretty new to VB2008, a little over halfway through my first classi am writing a console program to ask the user for the price of gas for 7 days, then to get the average of that price. here is my code so far:
Option Strict On
Module Module1
Sub Main()
[code].....
View 4 Replies
Jan 25, 2011
Private Function Compress(ByVal strInput As String) As Byte()
Try
Dim bytData() As Byte = System.Text.Encoding.UTF8.GetBytes(strInput)
[Code]....
View 1 Replies
Nov 7, 2009
my project is attached. I have a very weird problem with Winsock! I made 1 program with 2 forms. 1st form is the client, 2nd form is the server. Server send snapshot for client. So, client display either Single Picture. Or stream of pictures (to simulate video capturing).
when open 1st window (client) in a computer, and 2nd window(server) in another computer... it connect and display picture without problem just once!! when press "Capture" button again it may reponse or Winsock may loss connection. and when Check "Loop"=> means for stream of pictures.. Winsock loss connection immediatly! I don't know where is the problem exactly! The code attached. Winsock ocx is attached.. see it in the release folder
View 9 Replies
Jan 3, 2012
I trying to create application that can read loss bmp with bmp constructor, what I mean loss is bmp without header, here the sample of loss bmp (zip is including with original bmp): Download (you can see the different by comparing the original bmp and loss bmp with hex editor, the different is loss bmp don't have 54 bytes header bmp) Height of image is 126 px and width image is 45 px,how I can preview that loss bmp in picture box? someone of my friend say, its need BMP Constructor to preview bmp properly but he doesn't know the code?
View 3 Replies
Sep 30, 2011
how many of you out there in the VB.NET community have installed VS2010 SP1 and are experiencing this issue with the loss of intellisense in SQL Server 2008 R2?I'm holding off installing SP1 because I kind of like the intellisense thingy (though RedGate's SQLPrompt 5 is way better - have it at home).So is this pee-ing you off, have you explored workarounds, tries the hotfixes (that apparently don't work for many setups)?url...Please note that even though Cumulative Update 9 (CU9) was released the month there are still people it does not work for..including a coworker using a similar setup as mine (Win7 Pro, x32) This is a disaster and embarassment for MS IMO
View 2 Replies
Dec 28, 2010
I found a win, loss, percentage calculator in the forums. The form has a PLACE FOR INPUT
Team Braves
WINS = 96
LOSS 66
a button Compute Percentage and a text box it should read Braves won 59.259 percent of games. The program in the forums does not work. Does any one know how to do this? The math should be wins / wins+loss * 100.
View 2 Replies
Mar 15, 2009
I am trying to code to capture the packet loss on computers, but the only way I've been able to do so was to run the NetStat.exe and the TraceRt.exe processes and capture them to a listbox (using the code below):
[Code]...
View 1 Replies
Mar 23, 2010
I coded this program. It has three forms, when I try to open the [Design] on one of the forms it give me this error: To prevent possible data loss before loading the designer, the following errors must be resolved:
[Code]...
View 12 Replies
May 2, 2011
i want to make crystal report of profit and loss statement i have a column of "vr_type" and there are 4 types in it "sale invoice", purchase invoice" now i want that put a 4 formula s where i select that "sum (vr_detail.debit) where vr_detail.vr_type} sale invoice it make Sum of al these types so kindly tell me what formula i should use to get the result in simply i want sum of sale,sum of purchase,sum of expense?
View 2 Replies
Aug 5, 2008
I have an access DB with 3 columns, ID#(Primary Key), Minutes, and Profit/Loss. I'm using the Total feature in access which adds a Row 'Total' to the bottom and shows the sums. How would I get the sum from the 'Minutes' column, 'Total' row, and get that to show in a text box (txt002004Min) ?
Imports System.Data.OleDb
Public Class Form13
Dim cn As OleDbConnection
[code]......
View 3 Replies
Aug 26, 2010
I have an application putting new data into a database so I want to use a DataGridView to display the data. I have a timer triggering every 5 seconds and running this UpdateGridFromDatabase() routine every cycle.
It works, but I can see my application memory usage going up by 10kB every 5 seconds until my computer with 6GB of RAm & 64 bit Windows 7 grinds to a halt! Can anyone see at a glance what I am doing wrong? I am trying to open & close everything as necessary. I have also dimmed two variables outside - I had then inside previously and it didn't make any difference.
View 3 Replies
Sep 10, 2010
<div style="color: rgb(0, 0, 0); font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12px; margin-top: 8px; margin-right: 8px; margin-bottom: 8px; margin-left: 8px; background-image: initial; background-attachment: initial; background-origin:
[code].....
View 2 Replies
Nov 14, 2009
All tutorials I read before used Extension property to get the extension of a file. How can I get the type of file as a phrase? Example: .vb is 'Visual Basic Source File'. Like what Windows does in the Properties window of a file.
View 9 Replies
Nov 30, 2011
I'm using this query:
Dim FilesDirsQuery = From file In
_directory.EnumerateFileSystemInfos()
Select file.Name, file.Extension
It gets all files and directories in the _directory. But how to order the query by extension and name?
So I found that I have to use this to order by extension:
Dim FilesDirsQuery = From f In
_directory.EnumerateFileSystemInfos()
Select f.Name, f.Extension Order By Function(f As IO.FileInfo)
Return f.Extension
End Function
And I have to use "ThenBy", but it can't be used in my example. So I tried:
FilesDirsQuery.OrderBy(Function(f As IO.FileInfo)
Return f.Extension
End Function).ThenBy(..)
But it say's that my nested function doesn't have a compatible delegate. So what should I do?
View 2 Replies
Apr 26, 2008
For the past 3 weeks now, we are encountering a sudden loss of table in our database, but with that. our .mdf file is still on its same size before this disaster comes along and again..anyone had encountered or know how to solve this problem.
View 3 Replies
May 13, 2009
I've got a Samsung Q1 attached to my computer, and I was hoping to use the FileInfo / DirectoryInfo objects to access the file on the device, however what I right click on a file in windows explorer I get a location of COMPUTER/Q1/DATACASTS/mine.mp3, and when I feed this into the DirectoryInfo object I get "Invalid network drive"
Something tells me I'm going about this the wrong way ... Is there a differant object I shoud use, or is my location string incorrect in format
View 1 Replies
Mar 20, 2009
I need to find the newest file in a file folder by looking at the creation date. What is the best way to go about this?
I already have the code below to do some other work. Can I insert code to do the comparison inside the For...Each,
Dim sourceFiles As FileInfo()
Dim sourceFile As FileInfo
For each sourceFile in Sourcefiles
...existing code
Next
View 2 Replies
Jun 23, 2011
is there something equivalent to fileinfo.exist to a Uri object?
for eaxample if Uri.exist=true then do something
View 3 Replies
Jul 13, 2010
I am making a small utility to rename my music library to the same syntax (00-Artist-Album-Title.mp3). All the files are MP3 and are correctly tagged (ID3). This is my current
VB.NET
Sub Main()
Console.WriteLine("Press any key to continue...")
[Code]...
Line 33 is where I need to get the song's ID3 tags from Song. I've done a fair amount of research but I can't find anything current or relevant.
View 3 Replies
