Unexpected WPF Behaviour with Microsoft.Win32.OpenFileDialog [modified] - WPF Discussion Boards

coolestnerd12-Jun-08 5:38

12-Jun-08 5:38

I am setting a combobox with 3 choices that the user will select one. When the choice is made, I want to put the choice in the Properties.Settings.Default.ApplicationSelected which I have defined as an int. So far, so good.

But when the user restarts the application, I would like to cause the combobox to be set to the saved choice. I haven't found any way to do this, and I get an error when I do this:

comboBox1.SelectedIndex = Properties.Settings.Default.ApplicationSelected;

How do I do this?

Chuck Summers
summers.chuck@gmail.com

Re: WPF ComboBox problems

Jammer12-Jun-08 6:13

Jammer

12-Jun-08 6:13

Are you sure that the setting is being saved???

I do all my users settings binding in XAML:

Create a ResourceSettings.xaml file like:

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:settings="clr-namespace:YourNameSpace.Properties">
    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary>
            <settings:Settings x:Key="settings" />
        </ResourceDictionary>
    </ResourceDictionary.MergedDictionaries>
</ResourceDictionary>

Then in app.xaml as a dictionary pointing to this in your merged dictionaries:

<ResourceDictionary.MergedDictionaries>
    <ResourceDictionary Source="SettingsResources.xaml"/>
</ResourceDictionary.MergedDictionaries>

then for each setting you wish to bind do:

PropertyToBind="{Binding Source={StaticResource settings}, Path=Default.MainTop, Mode=TwoWay}"

Don't forget to add a window_closed to your main window with:

private void Window_Closed(object sender, EventArgs e)
{
    //Stores all user settings (see XAML for bindings)
    Settings.Default.Save();
}

Cheers,

Jammer

Going where everyone here has gone before! Smile | :)

My Blog

Re: WPF ComboBox problems

coolestnerd12-Jun-08 7:21

coolestnerd

12-Jun-08 7:21

I know it is being saved, and I would like to do it in C#, but I'll look at your solution to see if I can use that.

Thanks for your time,

Chuck

Class for Updating version of Silverlight Application

am 200912-Jun-08 0:40

am 2009

12-Jun-08 0:40

Hi Is there any class in .Net Silverlight which is used for updating version of application.

Regards
ABM

Re: Class for Updating version of Silverlight Application

Michael Sync15-Jun-08 16:15

Michael Sync

15-Jun-08 16:15

Normally, we used to update the version of application manually. Why do you want to update the version of Silverlight from code?

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

WPF ContextMenu -> open with left mouse-click???

AndyGrothe11-Jun-08 20:55

AndyGrothe

11-Jun-08 20:55

hello ng,

how can i open/show a wpf-contextmenu with the left mouseclick???

byby andy

Re: WPF ContextMenu -> open with left mouse-click???

AndyGrothe16-Jun-08 21:57

AndyGrothe

16-Jun-08 21:57

hello,

it is so simple:

ContextMenu.isOpend = True

is the solution

byby andy

Unexpected WPF Behaviour with Microsoft.Win32.OpenFileDialog [modified]

Mitch F.11-Jun-08 18:57

Mitch F.

11-Jun-08 18:57

I've come across some really unexpected behavior using the OpenFileDialog, WPF, and a PocketPC (physical) device.

I'm trying to let users select a file on their PocketPC using an OpenFileDialog, and when the user selects Open, WPF copies the file into the Temporary Internet Files directory, and then returns that as the path. I'm really confused as to why this happens, but here's the code to reproduce it.

Dim ofd As New Microsoft.Win32.OpenFileDialog
ofd.CheckFileExists = False
ofd.CheckPathExists = True
ofd.AddExtension = False
ofd.Filter = "Folders|*.*"
ofd.Multiselect = False
ofd.InitialDirectory = "C:\"

ofd.ShowDialog()

Console.WriteLine(ofd.FileName)

When I select a file from the My Documents (eg, "\My Documents\Meeting Notes.psw") directory on my PocketPC, this is the output that is written in the console "C:\Users\*****\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\82P6MGLK\Meeting_Notes[1].psw" (Note, the astericks are used to hide my user-name). In addition to this, if you try it with a large file, the UI just freezes until the file finishes copying. Windows does not say that the program is "Not Responding", just you can't interact with the UI at all.

Does anyone know why this happens? It certainly is interesting behaviour.

Thanks,
Mitch

modified on Thursday, June 12, 2008 1:11 AM

Re: Unexpected WPF Behaviour with Microsoft.Win32.OpenFileDialog

Pete O'Hanlon18-Jun-08 8:56

Pete O'Hanlon

18-Jun-08 8:56

It'll be the same behaviour as with a Windows Forms app. It sounds like you are performing the copy on the primary thread, which blocks the UI until it completes the operation. Try moving the copy onto a background thread instead - this should help.

Deja View - the feeling that you've seen this post before.

My blog | My articles

Re: Unexpected WPF Behaviour with Microsoft.Win32.OpenFileDialog

Mitch F.18-Jun-08 10:15

Mitch F.

18-Jun-08 10:15

Pete O'Hanlon wrote:
It'll be the same behaviour as with a Windows Forms app.

I just tried the same block of code in .Net 2.0, and that's correct; it copied the file to my hard drive as well.

Pete O'Hanlon wrote:
It sounds like you are performing the copy on the primary thread, which blocks the UI until it completes the operation.

The only thing that confuses me is that I don't have any code to perform the copy in my project; when the user presses the Open button on the OpenFileDialog, it is copied over automatically without any extra code.

Thanks,
Mitch

Unable to play audio from client

vayanan11-Jun-08 12:38

vayanan

11-Jun-08 12:38

Hi all
I am developing an Voice Chat Application in WPF.....
I used DirectSound For Capturing the Audio.

Using WaveFormat I am capturing the audio bytes and sending it over the client.....
My client is receiving the Audio Byte...But it is not playing.......

Can anyone tell me what will be the reason.......

I have written the code for audio capturing in the seperate class, let us say voicechat.cs
in that device.SetCooperativeLevel is creating problem...
so i have inherited System.windows.forms.Form and used....
the way i used to set cooperative level is correct or not....
if it is not please give me a solution to fix both problems i am facing

Thanks in Advance
Vayanan

Re: Unable to play audio from client

Jammer11-Jun-08 23:12

Jammer

11-Jun-08 23:12

Most application of this ilk actually use ASIO not DirectSound, Skype for instance. Its a much better solution than DirectSound.

Also you may want to look into XAudio2 as its replacing DirectSound.

Not really a lot we can say without seeing your code. When it comes to audio there are SO SO many things that can go wrong, without seeing code its more or less impossible to help.

What audio format are you using? Does the client machine have the neccessary codecs to decode the audio bytes. If I remember correctly during my brief look at DirectSound using window handles was slightlf different than windows forms ...

Jammer

Going where everyone here has gone before! Smile | :)

My Blog

Re: Unable to play audio from client

Jasvinder Kumar Bali2-Sep-08 21:47

Jasvinder Kumar Bali

2-Sep-08 21:47

public class RecordUtil
{

  public IntPtr _IntPtr;

  public RecordUtil(IntPtr iptr)
  {
     _IntPtr=iptr; //IntPtr.Zero
   }
}

in main window use this--

{
  IntPtr source = new WindowInteropHelper(this).Handle;
  recorder = new RecordUtil(source); //RecordUtil constructor overloading

}

Need C# Code to take Screenshot of a WPF application

Arun00311-Jun-08 5:25

Arun003

11-Jun-08 5:25

Hi All,

There is a requirement in our VS 2008 WPF application to take the screen shot of a scrollable XAML window and save it in a pdf. The window includes numerous controls such as Textboxes, images, comboboxes, etc.

Currently we are able to capture whatever is visible on the screen. The parts of the scrollable window outside the visible screen is not captured.

Can anyone suggest a way to do this?

Thanks in Advance...

Re: Need C# Code to take Screenshot of a WPF application

Jammer11-Jun-08 6:19

Jammer

11-Jun-08 6:19

Can't you use the scrollable window data source as the data source for the pdf?

Cheers,

Jammer

Going where everyone here has gone before! Smile | :)

My Blog

Re: Need C# Code to take Screenshot of a WPF application

Thomas Stockwell19-Jun-08 16:16

Thomas Stockwell

19-Jun-08 16:16

If every control is nicely tucked into a panel or canvas, the layout control can be embedded into a FlowDocument control.

Look into the following components (I tried to have proper heirarchy of control embedding).

1)FlowDocumentReader.Document
2)FixedDocument
3)FixedPage
4)PageContent
5)Inside of the page content you would add a child WPF control (your controls you want screen captured).

Regards,
Thomas Stockwell

Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

Visit my homepage Oracle Studios

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Silverlight 2 (beta2) Article Competition

Michael Sync11-Jun-08 5:00

Michael Sync

11-Jun-08 5:00

I'm hosting a contest for Silverlight developers in my blog. That contest is sponsored by two great authors of "Silverlight 2 in Action" book. Please read more in this link.

Contest: Write an article about Silverlight 2 (beta2) and Win “Silverlight 2 in Action” ebook[^]

See you there! Good Luck!

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

Re: Silverlight 2 (beta2) Article Competition

248912822-Jul-08 23:46

2489128

22-Jul-08 23:46

Hi Michael. I want create my blog on http://www.bartelme.at/. Please help me.

Re: Silverlight 2 (beta2) Article Competition

Michael Sync31-Jul-08 23:02

Michael Sync

31-Jul-08 23:02

2489128 wrote:
Hi Michael. I want create my blog on http://www.bartelme.at/. Please help me.

Hi, I'm sorry. I'm not the owner of that site so I can't help.

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

Loading Directx file in WPF

Member 38458159-Jun-08 21:54

Member 3845815

9-Jun-08 21:54

Hi,

Am new to WPF environment and i need to load Directx file in XAML.How should i load it?Do i necessarily need to convert Directx file to XAML format?or can i directly load through some other way?Any help is greatly appreciated.Thanks in Advance.

Regards,
Priya

Re: Loading Directx file in WPF

Jammer11-Jun-08 3:31

Jammer

11-Jun-08 3:31

What's a DirectX file???

Jammer

Going where everyone here has gone before! Smile | :)

My Blog

Re: Loading Directx file in WPF

Pete O'Hanlon11-Jun-08 4:54

Pete O'Hanlon

11-Jun-08 4:54

If you are talking about importing a .x file, then you can do the following

<MeshPrimitive3D>
  <MeshPrimitive3D.Mesh>
    <Mesh3D X3DFileSource="myfile.x" />
  </MeshPrimitive3D.Mesh>
</MeshPrimitive3D>

Deja View - the feeling that you've seen this post before.

My blog | My articles

Re: Loading Directx file in WPF

KornZhang15-Jun-08 23:26

KornZhang

15-Jun-08 23:26

suggest you translate it to XAML

Accessing Dynamic Binary Resources In External Assembly [modified]

Jammer9-Jun-08 5:06

Jammer

9-Jun-08 5:06

Hi All,

I'm having a bit of a problem with some app styling, specifically loading an image using a DynamicResource I have this in my application window xaml:

<ImageBrush x:Name="imgLogoSmall" TileMode="None" ImageSource="{DynamicResource Logo.Default.Small}"/>

Then in my skin.dll I have:

<ImageSource x:Key="Logo.Default.Small" Source="Utils.WPFThemes.Default;component/BinaryResources/Logo/Logo_gray_orange_150x26.png"/>

ImageSouce doesn't have anything related to a uri property to set so this aboe code doesn't work at the moment ... hence this email ... I'm a bit lost on this at the moment and can't figure it out.

EDIT: Ahhh a BitMapImage instead of ImageSource might be the trick!

Any Ideas?

Jammer

Going where everyone here has gone before! Smile | :)

My Blog

modified on Monday, June 9, 2008 11:12 AM

SilverLight Error

bilal haider9-Jun-08 1:44

bilal haider

9-Jun-08 1:44

Hi.
I am a beginner in Silverlight. I am getting this error when i test my SilverLight Application.
System.componentModal.Win32Exception System can't load the file specified.
at System.Diagnstic.process.StartwithshellExecuteEx(ProcessStartInfo info)
etc.
I have used media element.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.