How do I get from data bound to a row in a ListView to the UI representing the row so I can apply a style to the row? - WPF Discussion Boards

gsipes30-Jun-09 3:09

30-Jun-09 3:09

Does anybody have any insight on audio streaming through a tv tuner in a vb app? I'm using a directshow2005.dll. I have the video end of it working fine, but the audio does not work. Is there a way to check the graphBuilder or the assigned pins? Or does anybody have any better suggestions? Maybe an updated dll or or completely different one? I was reading some other forums and this seems to truly be a tough topic in everything before 3.5 .net framework.

Re: tv tuner and directShow

Christian Graus30-Jun-09 10:35

Christian Graus

30-Jun-09 10:35

Please don't cross post ? Are you using WPF ?

Christian Graus

Driven to the arms of OSX by Vista.

"! i don't exactly like or do programming and it only gives me a headache." - spotted in VB forums.

I can do things with my brain that I can't even google. I can flex the front part of my brain instantly anytime I want. It can be exhausting and it even causes me vision problems for some reason. - CaptainSeeSharp

Re: tv tuner and directShow

gsipes1-Jul-09 2:45

gsipes

1-Jul-09 2:45

Yes, hence why I posted it in the wpf forums

Re: tv tuner and directShow

BrowniePoints6-Jul-09 6:00

BrowniePoints

6-Jul-09 6:00

Jeremiah Morril is the man for all your DirectShow rendering needs in WPF. I think his MediaKit does exactly what you want right out of the box.

Re: tv tuner and directShow

gsipes8-Jul-09 3:21

gsipes

8-Jul-09 3:21

that looks good, thank you!

how to retrive attachment files from gmail

Nekkantidivya29-Jun-09 18:33

Nekkantidivya

29-Jun-09 18:33

Hi,

I am working on an application in which we have to retrieve the attachment files from given Gmail Id using Pop3 and save them in a folder. I worked this with yahoo mail, but now I have to do this with Gmail too. As Gmail have some security I am notable to directly connect to it directly. I came to know that using SSlconnection we can connect to Gmail. But I don't know how to do this.

If any one have any idea to solve this please reply me.

Thanks in Advance.

Re: how to retrive attachment files from gmail

Pete O'Hanlon29-Jun-09 21:12

Pete O'Hanlon

29-Jun-09 21:12

Well, in WPF I'd do this by... no wait, your question has nothing whatsoever to do with WPF. OK, change of tack, in WCF I'd do this by... no wait, it's not WCF either. Silly me, it must be WF - well, I'd start by... no wait not WF either. You haven't, um, got the wrong forum by any chance?

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

My blog | My articles | MoXAML PowerToys | Onyx

How do I get from data bound to a row in a ListView to the UI representing the row so I can apply a style to the row?

fjparisIII29-Jun-09 16:42

fjparisIII

29-Jun-09 16:42

I'm using data binding to populate the rows of a ListView. Then an event takes place where I have to change a value in a particular column in the row and I'm successfully doing that. But now to grab the user's attention I want to change the color of the text in the row. But all I have is a reference to the data object whose public properties I use to populate the row. But how do I get a reference to the UI object that presents this data visually in a row within the ListView so I can change the style of that row?

As you can see, I'm still puzzling over how to get back and forth between the data and the UI presenting it visually. I know there's a difference. I just don't know how to get back and forth. This sounds like a fundamental WPF question and is another example of fundamental knowledge that I have not yet mastered, but once I get this one answered, a lot of pieces of the puzzle are going to fall into place.

Re: How do I get from data bound to a row in a ListView to the UI representing the row so I can apply a style to the row? (SOLVED)

fjparisIII29-Jun-09 18:11

fjparisIII

29-Jun-09 18:11

Never mind. I figured it out. I needed a Style Data Trigger.

Control drag and drop in Grid

krishnan.s29-Jun-09 16:41

krishnan.s

29-Jun-09 16:41

Hi,
I have a grid container with controls in its cells. I need to move the controls from one cell to another in the grid or across grids by dragging and dropping.

Is there any sample for it. Can anyone tell how to achieve it in wpf.

Thanks

Opening file search dialog in WPF with XAML

David Shapira29-Jun-09 11:02

David Shapira

29-Jun-09 11:02

How can I open a file search dialog in WPF with XAML?

Thanks,

David

Re: Opening file search dialog in WPF with XAML

Christian Graus29-Jun-09 11:14

Christian Graus

29-Jun-09 11:14

Why do you need to use XAML ? I don't see how you can, I mean, how would you work with the resultant file if not in code behind ?

Re: Opening file search dialog in WPF with XAML

David Shapira29-Jun-09 11:27

David Shapira

29-Jun-09 11:27

How can I do it in C#?

Re: Opening file search dialog in WPF with XAML

Christian Graus29-Jun-09 13:35

Christian Graus

29-Jun-09 13:35

The same way you would with winforms. I'd imagine some XAML to hook up an event for when you want the dialog to appear, but then you just create it and show it.

OpenFileDialog dlg = new OpenFileDialog(); // etc

Re: Opening file search dialog in WPF with XAML

David Shapira29-Jun-09 14:19

David Shapira

29-Jun-09 14:19

Thanks,

David

Re: Opening file search dialog in WPF with XAML

gsipes30-Jun-09 3:28

gsipes

30-Jun-09 3:28

You don't want the xaml to do the work. Hook up a button and write the code in the event. Here's a sample that I wrote that will open the file dialog box with a .zip filter. This code is for 3.5 sp1, it is slightly different in earlier versions.

Dim myDialog As New Microsoft.Win32.OpenFileDialog
Dim sourceFilePath As String = ""
myDialog.Filter = "Zipped Files(*.zip)|*.zip"
myDialog.CheckFileExists = True
myDialog.Multiselect = False
If myDialog.ShowDialog = True Then
sourceFilePath = myDialog.FileName
Else

Re: Opening file search dialog in WPF with XAML

David Shapira30-Jun-09 4:40

David Shapira

30-Jun-09 4:40

Thanks, I will try it,

David

ComboBox and Binding

zlakob29-Jun-09 10:28

zlakob

29-Jun-09 10:28

Hi!

I hope someone can help me with this:
I have an enum as itemssource for combobox and I want to bind selected item in this combobox with property of some object. How do I do that?

For instance, let's say this is enum:

public enum AlarmTypes
{
LOW,
HIGH
}

and there is class Alarm which has AlarmType property:

public class Alarm
{
...
private string alarmType;

public string AlarmType
{
get { return this.alarmType; }
set { this.alarmType = value; }
}
....
}

and of course ComboBox is defined in XAML:

<objectdataprovider
x:key="AlarmTypes"
="" methodname="GetValues" objecttype="{x:Type System:Enum}">
<objectdataprovider.methodparameters>
<x:type typename="enumns:AlarmTypes">

...

<combobox name="alarmTypeComboBox" itemssource="{Binding Source={StaticResource AlarmTypes}}">

I tried to solve this in many ways but none of them was completely successful. Thanks in advance!

Re: ComboBox and Binding

User 27100929-Jun-09 15:39

User 271009

29-Jun-09 15:39

Give this short article a look:

Fill Combobox With Sorted Enum Without Code[^]

Cheers, Karl

» CodeProject 2008 MVP, CodeProject 2009 MVP

My Blog | Mole's Home Page |
XAML Power Toys Home Page

Just a grain of sand on the worlds beaches.

modified 27-Feb-21 21:01pm.

Floating control at the bottom of the web page??

Sunil P V29-Jun-09 7:44

Sunil P V

29-Jun-09 7:44

Hi All,

I am working on Silverlight 2.0.
I have a grid (which is actually a menu) in my silverlight page. I want this grid to have a floating capability, that is, as and when the user scrolls, it should always stick to the bottom of the page or at the centre of the page page. Even when the page is minimized/maximized, this grid should be placed to the bottom of the page.

Is there an option in silverlight to dock a control to the any particular portion of the page ?
Is coding necessary to create such an effect?

Any pointers to online samples or code snippets will be really helpful.

Thanks in advance.

Sunil

Re: Floating control at the bottom of the web page??

Mark Salsbery29-Jun-09 9:25

Mark Salsbery

29-Jun-09 9:25

The layout of the Silverlight control plugin on a page is
an HTML issue and outside the scope of this message board.

For layout within your Silverlight app, you need to use the
elements that give you the functionality you need.

A couple possible solutions:

The Silverlight Toolkit[^] has a DockPanel element you could use
to fix the grid at the bottom.

You could also use an outer grid with two rows - the first row
star-sized, and the second row fixed/auto sized. Put the grid you
want fixed to the bottom in the second row of the outer grid.

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Floating control at the bottom of the web page??

Sunil P V30-Jun-09 5:53

Sunil P V

30-Jun-09 5:53

Mark,

I suppose there is a disconnect in the issue that i am facing and the your understanding of my issue.
I do know that silverlight is a plugin. What I wanted to achieve is like this:

1. A complete silverlight web page.
2. A menu (silverlight control) that floats top of this silverlight page. When the user scrolls the silverlight page, the menu should still be as docked botttom to the page.

I hope i am clear. Please let me know if I should elaborate the problem.

Thanks.

Sunil

Re: Floating control at the bottom of the web page??

Mark Salsbery30-Jun-09 7:08

Mark Salsbery

30-Jun-09 7:08

I'm not sure what you mean by "floats" but I gave you two possible
solutions for docking something to the bottom of the page...

Use a DockPanel:

<UserControl x:Class="SilverlightTester.MyPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:stk="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Toolkit"
    >
    <stk:DockPanel x:Name="layoutRoot" >
        
        <!-- This is the menu that stays anchored at the bottom of the page -->
        <StackPanel stk:DockPanel.Dock="Bottom" Orientation="Horizontal" Background="SteelBlue" >
            <Button Content="Menu 1" />
            <Button Content="Menu 2" />
            <Button Content="Menu 3" />
        </StackPanel>

        <!-- This is the main body of the page (scrollable) -->
        <ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" >
            <Grid Width="1000" Height="1000" Background="LightSteelBlue" />
        </ScrollViewer>

    </stk:DockPanel>
</UserControl>

Use a Grid:

<UserControl x:Class="SilverlightTester.MyPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    >
    <Grid x:Name="layoutRoot" >
        
        <Grid.RowDefinitions>
            <RowDefinition Height="*" />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>
        
        <!-- This is the main body of the page (scrollable) -->
        <ScrollViewer Grid.Row="0" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" >
            <Grid Width="1000" Height="1000" Background="LightSteelBlue" />
        </ScrollViewer>

        <!-- This is the menu that stays anchored at the bottom of the page -->
        <StackPanel Grid.Row="1" Orientation="Horizontal" Background="SteelBlue" >
            <Button Content="Menu 1" />
            <Button Content="Menu 2" />
            <Button Content="Menu 3" />
        </StackPanel> 
        
    </Grid>
</UserControl>

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Floating control at the bottom of the web page??

Sunil P V30-Jun-09 22:15

Sunil P V

30-Jun-09 22:15

Hi Mark,

Thanks for your suggestion. I had to do a little tweaking to the canvas and i was able to achieve what I wished for. I could mail the .xap and html file of my prototype if you need. I will surely try out as per your suggestion and let you know...

Thanks for your time.

Sunil

ProgressBar

Ranger4929-Jun-09 7:33

Ranger49

29-Jun-09 7:33

private void button1_Click(object sender, RoutedEventArgs e)
{
    Random rnd = new Random();
    Pen p = new Pen();
    byte red, green, blue;

    for (int i = 0; i < 100; i++)
    {
        SolidColorBrush brush = new SolidColorBrush();

        Line line = new Line();
        red = (byte)rnd.Next(0, 255);
        green = (byte)rnd.Next(0, 255);
        blue = (byte)rnd.Next(0, 255);
        Color col = new Color();
        col.R = red;
        col.G = green;
        col.B = blue;
        col.A = 255;
        brush.Color = col;

        line.X2 = rnd.Next(0, (int)canvas1.ActualWidth);
        line.Y2 = rnd.Next(0, (int)canvas1.ActualHeight);
        line.X1 = rnd.Next(0, (int)canvas1.ActualWidth);
        line.Y1 = rnd.Next(0, (int)canvas1.ActualHeight);
        line.Stroke = brush;
        line.StrokeThickness = 1.0;
        canvas1.Children.Add(line);

    }
}

I would like to use a ProgressBar for this loop, but when I tried it my ProgressBar only updated itself once after the loop had been completed when it went from 0% to 100%. I reckon canvas1.Children.Add(line) functions like a stack, maybe I need to override some virtual method to make the ProgessBar show progress. Could anybody here give me a hint on how to do this?

Thankyou,
Ranger.

PS, What I tried was in the i-loop a command this.progressBar.Value = i; I tried my code in a sample program that only had an i-loop that did nothing and there my progressBar worked fine...

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