I'm using this codeline
Dim CardBitmap As Bitmap = New Bitmap(Filename.ToString)
inside an eventroutine of my mainform (for example button.click) with no problem.
However, when using it in a class it is raising a system.argument exception (not allowed parameter [translated from german]).
Filename is a Stringbuilder in both cases and is holding the same string which is pointing to a valid picture.
I have written a Forms application that analyzes a lot of (~1400) 8-bit jpg images from automated lab-equipment. I am in the process of migrating from WinXP to Win7 and to my surprise I noticed that analysis was 5 times slower under win7 compared to win XP (!?!?!). I investigated further and found that the loading of the jpg images was the step that was takning longer! The simple code demonstrates the problem: On XP i get 70 images per second, but only 12 images per second under win7. Has anyone else noticed this performance drop, and can something be done to improve it?
[Code]...
I read that using Graphics.FromImage(bmp) will let you draw to a bitmap. I have this
vb.net
Imports System.Threading
Public Class Form1
Dim paintcolor_current As Color = Color.Black
[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:
ringlist = Mid(XMLRESP, (startloc + 1), (endloc - 1))
MsgBox(ringlist)
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)
[code].....
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();
[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
[Code]....
how do you transform an address like "file:///d:filename.ext" in "d:filename.ext"
without dirty string manipulation??
I'm using Bitmap to show picture box like slideshow using Timer. For each timer interval, I've to go for new instance of Bitmap, there System memory increases to 1MB, How to resolve this, 'BG is picture box
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tic Dim img As Bitmap
img = New Bitmap(System.Drawing.Bitmap.FromFile(FileIO.FileSystem.GetFiles
[CODE]...
I'm trying to use a ToolTip directly to a Bitmap Object (System.Drawing.Bitmap), aparently I can't do this because Bitmap isnt a Windows Control.
View 1 Replieshow can i create a monochrome bitmap from a semi transparent bitmap in vb.net? the bmp is for a transparency mask image for an icon i'm trying to create with the CreateIconIndirect API function.
i'm using vb2008 .Net3.5, but i would prefer an answer that would also work in vb2005
Here is a short program to demonstrate my question. I just want to extraxct a rectangle bitmap from a big bitmap.Code as follows:
Private
Sub Button3_Click(ByVal sender
As System.Object,[code]....
Execution stops when hitting the Dim cloneBitmap statement, which should have created a bitmap out of the rectangle cut out.The message is:
"MissingMemeberException was unhandled.
No default member was found for type 'bitmap"
I just don't get it. Seems that the method Clone(Rectangle, PixelFormat was not found.
I have a grass image located here in my directory. I want to just create a Bitmap, but I am getting an error. (Parameter is not valid.) Immediate Window: A first chance exception of type 'System.ArgumentException' occurred in System.Drawing.dll
[URL]
private void Form1_Load(object sender, EventArgs e)
{
Bitmap bmp = new Bitmap("grass.jpg");
}
bertino
The code below reads an Icon from an .ico file, converts the Icon read to a Bitmap and saves the bitmap using:
Bitmap.Save(PathA)
Then does:
PanelShowWrittenIconA.BackgroundImage = New Bitmap(PathA)
[code].....
i want to set a link in VB.net dynamically to a file. My url looks like that:
[Code]...
i use this:
Try
' Create an instance of StreamReader to read from a file.
Using sr As StreamReader = New StreamReader("musik.txt")
Dim line As String
[code]....
In the line line = sr.ReadLine I dont want the full path Maybe i have c:lalalalamin.mp3 And i just want to show min.mp3?
I'm trying to figure out how to get the file name of the application at run time, in case it gets renamed.Also, as a easter-egg. First post, I don't know what code to put but this is how I am so far, the {FN} is where I need the file name.
If({FN} = "easter.exe") Then
msgbox("You found a easteregg! :O")
end
I often use things like the crosshatch in filenames to group them together. Until recently this has not been a problem.
I am working modifing a WPF app which uses a Listbox to store images. I need the full path of the image to feed to a class to retrieve metadata.
The test image is named "# Canon-ixus.jpg".
Using Listbox.SelectedValue to return the filename I get "%23 Canon-ixus.jpg". There are not a whole lot of options to returning the name of the selected item from the Listbox.
Is there any simple way to get the name back to its original form?
Possible Duplicate: Way to get unique filename if specified filename already exists (.NET)Have a look at the following code:
Dim counter As Integer = 0
While System.IO.File.Exists("C:DesktopSample.xls")
counter = counter + 1
[code].....
I have a filename SBSA_UPLD_20101208 and I am interested in reading the Last date part which is 20101208. How can I do it?
View 1 RepliesI am having trouble getting a filename out of my SaveFileDialog. I am using Framework 4.0, it works fine in 3.5.
Private Sub cmdExportToPDF_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdExportToPDF.Click
Dim SaveFileDialog1 As New SaveFileDialog()
[Code].....
I am getting a filename in a String and need to get the name from this. An example:
Dim file As String = "Hello.png"
'I need to get "Hello". One way of doing it is:
Dim name As String = file.Split(ChrW(46)).First()
The problem with this method is; What happens if the filename contains a .?
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I have a directory with more then 350.000 files in. I need to process every single file and move them to an other folder. When I use the dir() method it takes a few seconds before if it returns the first file found.
dim foundfile as string = dir("d:")
In the documentation there is this:
"The My.Computer.FileSystem Object gives you greater productivity and performance in file I/O operations than the Dir function. See My.Computer.FileSystem.GetDirectoryInfo Method for more information."
But I can't find any method that is faster then dir, and gives the same result. I can't use this method below because it takes for ever to load......
For Each foundFile As String In My.Computer.FileSystem.GetFiles("D:")
Next
It just does not work fast...
When I use the Dir() method it takes like 5 sec, and it uses 100% cpu... it is just not a option. How do I get the same function as the dir method but better performance? (I use visual basic 2008).
This question was resolved in C#, and I don't know how to do it in VB net. I want to search through a directory of files and see if my string is contained within any of the filenames. Then I just need a bolean answer if it exists or not. I know how to use the file.exists...this is not what I need. The link below is to the C# response. How to check if filename contains substring in C#
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In the XP SaveFileDialog, the user is allowed to set the SaveFileDialog.FileName.
I'm using Vista operating system and am using the VistaBridgeLibrary.dll so that I can get the Vista version of the Dialog Boxes. With the CommonSaveFileDialog (for Vista dialog), I'm unable to set the FileName property since it's read only.
Is there a way to populate the FileName so that when the DialogBox displays the filename in use is displayed?
There is no editor available for '<filename>'.Make sure the application for the file type (.vb) is installed.I got this message after I updated a VB08 project to VB10. I tried to open a form when this message was shown. It happens to every form in the group (but not standard classes).
View 1 RepliesI'm working on a final project where I need to create a file for a recipe. I'm trying to take the name of the recipe as entered by the user in a specific text box and create a sequential access .txt file bearing the recipe's name.[code]...
View 1 RepliesI have a Form that load the contents of a txt type file into a textbox1. How can I use the filename to fill in a label?For example, when I open the file Name1.txt, the textBox2 need to display Name1 only as a type of header.
Alternatively, is there a code that make the first line of a Multiline Textbox to display a different font or size ?
I found on msdn samples and modified (add Thread.GetDomaind.UnhandledException)
<SecurityPermission(SecurityAction.Demand, Flags:=SecurityPermissionFlag.ControlAppDomain)> _
Public Sub Main()
' Add the event handler for handling UI thread exceptions to the event.[code].....
I am trying to capitlize the first letter of a filename, but I am getting an error that the file already exists.
Dim folder2 As String = ComboBox2.SelectedItem
'rename the hap file
Dim source As String = System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)
[code]....
Process.Start("C:/wamp/bin/mysql/mysql5.5.16/bin/mysqldump.exe", "-uroot coop usertrails -r """ & FolderBrowserDialog1.SelectedPath & "ackup.sql""")
how can i make the filename of the mysqldump use current time and date?
i know i can use now.date. how will i add it on my current code?