How Check if the User Control is already viewed ?? - Visual Basic Discussion Boards

Re: How do I delete all files in a folder?

Janani Divya17-Nov-06 15:22

Janani Divya

17-Nov-06 15:22

SLRGrant wrote:
How would I display the results in a textbox of what is in that folder

http://www.codeproject.com/dotnet/folderwatcher.asp[^]

Janani

Re: How do I delete all files in a folder?

The ANZAC18-Nov-06 13:24

The ANZAC

18-Nov-06 13:24

If you want to delete all the files in a folder, the best approach would be to use a for/next statement. use a listbox for your display as oppose to a textbox.

Dim di as new system.io.directoryinfo = "your directory" '(1)
Dim fi as system.io.fileinfo

for each fi in di.getfiles'(5)
'(4)
listbox1.items.add(fi.filename)
fi.delete '(2) (3)
'(4)
next

Note:
(1) You could use a folder browser dialog to establish the folder or for the user to establish the folder
(2) When testing, have a test folder filled with copies files or something.
(3) If you wished to display first then give the option of deleting, you could put a similar for/next statement under a button's click action or something and only have delete option.
(4) You could have an if statement here for certain paremeters
(5) In the brackets after getfiles, you can specify file type

Posted by The ANZAC

Re: How do I delete all files in a folder?

Code Crapper19-Nov-06 2:14

Code Crapper

19-Nov-06 2:14

Cool, well thanks guys for all your help, I will fiddle about with the code and see what the result is Poke tongue | ;-P

How to open and view TIF in Access

Tech.Wizard17-Nov-06 13:19

Tech.Wizard

17-Nov-06 13:19

I need to present an image file image in Access based on a 'file path and name' pointer in a database record. I am using OLE and I get one of two run-time error messages at the acOLECreateLink action. The first: (2793) "Microsoft Office Access can't perform the operation specified in the Action Property of the Visual Basic procedure you're trying to run." The second: (2786) "The OLE server doesn't support linking."
I can find nothing specific in the MSDN library. Help! Frown | :(

Michael J Wolfstone

It is always fun to learn new stuff!

Problem: .NET 2.0 File.GetLastWriteTime(path) Keeps adding 1 hour

zonkerman17-Nov-06 13:12

zonkerman

17-Nov-06 13:12

When I use File.GetLastWriteTime(path) to get the date and time value of a file with a last write date of 5/8/2006 8:00a.m. the .NET 2.0 call always adds 1 to the hour so it ends up reading as 5/8/2006 9:00 a.m. How can I stop this? I need the file date to be read back exactly like the Windows explorer displays it.

Re: Problem: .NET 2.0 File.GetLastWriteTime(path) Keeps adding 1 hour

Johan Hakkesteegt19-Nov-06 22:20

Johan Hakkesteegt

19-Nov-06 22:20

Hi,

If the file is not on the same machine as the app, then you could check to see if the system time of both machines is set the same (especially daylight saving time).
Otherwise, if you are absolutely certain that it always adds exactly one hour you can use this:

CDate(File.GetLastWriteTime(path)).AddHours(-1)

Hope it helps,

Johan

Re: Problem: .NET 2.0 File.GetLastWriteTime(path) Keeps adding 1 hour

Cheeso8-Mar-09 12:35

Cheeso

8-Mar-09 12:35

No, the problem occurs because Win32 and .NET make different choices with regard to dealing with Daylight Saving Time.

For a discussion, see here:
http://blogs.msdn.com/oldnewthing/archive/2003/10/24/55413.aspx

To compensate, you have to adjust the time you use with SetLastWriteTime and GetLastWriteTime. When setting, adjust from .Net to Win32. When getting, adjust from Win32 to .NET. Here's some example code:

// If I have a time in the .NET environment, and I want to use it for
// SetWastWriteTime() etc, then I need to adjust it for Win32.
static DateTime AdjustTime_DotNetToWin32(DateTime time)
{
  DateTime adjusted = time;
  if (DateTime.Now.IsDaylightSavingTime() && !time.IsDaylightSavingTime()) 
    adjusted = time - new System.TimeSpan(1, 0, 0); 
  else if (!DateTime.Now.IsDaylightSavingTime() && time.IsDaylightSavingTime()) 
    adjusted = time + new System.TimeSpan(1, 0, 0); 

  return adjusted;
} 


// If I read a time from a file with GetLastWriteTime() (etc), I need
// to adjust it for display in the .NET environment.  
static DateTime AdjustTime_Win32ToDotNet(DateTime time)
{
    DateTime adjusted = time;
    if (DateTime.Now.IsDaylightSavingTime() && !time.IsDaylightSavingTime())
	adjusted = time + new System.TimeSpan(1, 0, 0);

    else if (!DateTime.Now.IsDaylightSavingTime() && time.IsDaylightSavingTime())
	adjusted = time - new System.TimeSpan(1, 0, 0);

    return adjusted;
}


void MySetLastWriteTime(String targetFile, DateTime t)
{ 
  DateTime adjusted = AdjustTime_DotNetToWin32(t);
  System.IO.File.SetLastWriteTime(targetFile, adjusted);
}


DateTime MyGetLastWriteTime(String targetFile)
{ 
  DateTime t = System.IO.File.GetLastWriteTime(targetFile);
  return AdjustTime_Win32ToDotNet(t);
}

How Check if the User Control is already viewed ??

kindman_nb17-Nov-06 13:03

kindman_nb

17-Nov-06 13:03

Hi

I'm designing an interface with navigation bar ,, it's viewing my own control on the same form ,,, but i want to chech if the control is aleady viewed to prevent the user from open it more than one time .. Rose | [Rose]

jooooo

Re: How Check if the User Control is already viewed ??

Christian Graus17-Nov-06 13:10

Christian Graus

17-Nov-06 13:10

Create a static variable, so it's visible across all instances of the control, and set it to true when the first one is shown. If it's true, don't allow more to be created.

Christian Graus - C++ MVP

Re: How Check if the User Control is already viewed ??

kindman_nb17-Nov-06 13:21

kindman_nb

17-Nov-06 13:21

Thanks my teacher Graus

you make me ashamed by your generosity , all time you are feady to aid me ,,,, really thanks , and five roses for you Rose | [Rose]

please keep in touch at all times

jooooo

Re: How Check if the User Control is already viewed ??

Christian Graus17-Nov-06 15:07

Christian Graus

17-Nov-06 15:07

*grin* not sure if I earned all of that, but sure glad to help.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Removing all checked items in a checked list box.

The ANZAC17-Nov-06 11:05

The ANZAC

17-Nov-06 11:05

I have a CheckedListBox (CLB) on my form, the user can add, edit and remove items. I also have a context menu for the CLB that has the option to remove all checked items. What i need to know is how to structure a for next statement to cycle through and remove all checked items.

Posted by The ANZAC

Re: Removing all checked items in a checked list box.

Are Jay17-Nov-06 18:13

Are Jay

17-Nov-06 18:13

For i As Integer = 0 To CLB.Items.Count - 1<br />
  CLB.SetItemChecked(i, False)<br />
Next

Re: Removing all checked items in a checked list box.

Daytona_67518-Nov-06 3:38

Daytona_675

18-Nov-06 3:38

Hey ANZAC,

I'm not sure if you mean remove the item or uncheck it, but if you want to remove an item try:

For i As Integer = YourCHB.CheckedIndices.Count - 1 To 0 Step -1
YourCHB.Items.RemoveAt(YourCHB.CheckedIndices.Item(i))
Next

The reason why I am using CheckedIndices is because when I give i to Item, it knows I want the checked item index rather than the general index.

I did think of using the GetEnumerator method on CheckedIndices and going through the collection that way, but because I modify the collection, it would stuff that up, which is why I'm going backwards because the positions are getting changed on each remove.

Re: Removing all checked items in a checked list box.

The ANZAC18-Nov-06 10:49

The ANZAC

18-Nov-06 10:49

Thanks, i should have stated, i am trying to remove all of the checked items, this will probably work, but i figured it out anyways.

Dim C As Integer = clbList.Items.Count
If Me.clbList.CheckedIndices.Count > 0 Then
Do Until C = 0
If clbList.CheckedIndices.Contains(C) Then
clbList.Items.RemoveAt(C)
Me.clbList.SelectedIndex = 0
End If
C -= 1
Loop

If clbList.CheckedIndices.Contains(Me.clbList.SelectedIndex) Then
Me.clbList.Items.RemoveAt(Me.clbList.SelectedIndex)
End If

End If

This is my method, not as clean but i like it well enough.

Posted by The ANZAC

Drawing Line and Bar Graph on the same Graph Space

PeterTF17-Nov-06 9:12

PeterTF

17-Nov-06 9:12

Hi!
Is there a way to draw line and bar chart on the same chart using AxMSCHART?
or
Is there a way to do paint both Bar and line graph on a PictureBox?
Or
Draw BarGraph on one Picturebox and Line on another picturebox,make one of them transparent so it would expose the other graph that is located right beneath.

Re: Drawing Line and Bar Graph on the same Graph Space

Christian Graus17-Nov-06 13:11

Christian Graus

17-Nov-06 13:11

If you want to do graphics programming, you need to forget about using picture boxes, so you can just draw it yourself.

Christian Graus - C++ MVP

Google Translate in vb.net

JoshKrak17-Nov-06 8:58

JoshKrak

17-Nov-06 8:58

Hi everyone!

I trying to write a app to do some chinese->english translation using google. I have all the code down to generate the right URL, i.e.

http://translate.google.com/translate_t?text=%E4%BD%A0%E5%A5%BD&hl=en&langpair=zh-CN|en&tbb=1&ie=utf-8

I can paste that into a browser and it works, but when I try to request the page using msxml 6.0 I get a 403 error (forbidden). I tried requesting "www.google.com" first, thinking maybe I need a cookie, and google.com returns fine, but still when I go on to the translate url I get the 403. Is there anyway around this, maybe changing my request header?

I also tried another approach with the WebBrowser control. I had a little more success using it; the page gets returned with no 403, but, well hard to explain unless you look at this page:

http://translate.google.com/transla...&tbb=1&ie=utf-8

so if you put that in your browser, you see ?? (or chinese characters if you have the language pack installed) in the 'Original Text:' box, and "Hello" as the translation. However, when I use this same URL in the webbrowser control of vb.net the returned page has ?? as the 'Original Text:' and "-" as the translated text.

Now this is really making me go bonkers. Anyone tell me what the heck is going on? I will bow down if you help me through this

-Josh K.
Co-Founder/VP
www.GamerWealth.com

MultiLanguage Support

Syed Shahid Hussain17-Nov-06 8:49

Syed Shahid Hussain

17-Nov-06 8:49

hi there,

How can we use resource file to implement multi language in our program?

please help Cry | :((

Syed Shahid Hussain

Re: MultiLanguage Support

Janani Divya17-Nov-06 15:58

Janani Divya

17-Nov-06 15:58

Syed Shahid Hussain wrote:
How can we use resource file to implement multi language in our program?

http://www.bhashaindia.com/Developers/MSTech/multilingualApp.aspx[^]

Janani

Re: MultiLanguage Support

Syed Shahid Hussain18-Nov-06 7:03

Syed Shahid Hussain

18-Nov-06 7:03

Really Thanks Friend.

Syed Shahid Hussain

Open a new Browser Window

Kevin Nicol17-Nov-06 7:23

Kevin Nicol

17-Nov-06 7:23

Hi I am trying to open a web page in a new browser window, I can easily open a page in the last used window:

System.Diagnostics.Process.Start("http://www.google.com")

But I would like to have it opened in a new window.

Any suggestions?

Kevin

Re: Open a new Browser Window

Guffa17-Nov-06 8:10

Guffa

17-Nov-06 8:10

If the page opens in the last window, in a new window or in a new tab depends on the settings in the browser.

---
b { font-weight: normal; }

Re: Open a new Browser Window

Kevin Nicol17-Nov-06 8:42

Kevin Nicol

17-Nov-06 8:42

There has got to be a way I can force it to open in a new window.

Re: Open a new Browser Window