Re: BasedOn Property - WPF Discussion Boards

Pete O'Hanlon9-May-09 0:37

9-May-09 0:37

John - to be honest, you need to look at using MVVM (definitely a version with the Mediator pattern as part of it). This architecture is designed to cope exactly with scenarios like this.

"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

Create pixel dimensions of a text string

califax2k8-May-09 5:02

califax2k

8-May-09 5:02

Hi,

I have the following problem:

I want to know the width and height in pixels of a text string of a certain length.

I tried using TextBox.GetRectFromCharacterIndex() but this didn't work. I suspect the reason is that the textBox has not been drawn before I invoked this method. I just assigned the Text property a value. The resulting rectangle is {empty}.

Is there a way to obtain the pixel dimensions of a string without haven drawn or shown it. I certainly know that the result also depends on the text formating. Nevertheless, is there a way to obtain this information?

thanks in advance

Lars

#pragma error( disable : * )

Re: Create pixel dimensions of a text string

#realJSOP8-May-09 5:42

#realJSOP

8-May-09 5:42

You need to get the current display context, and then call the Graphics.MeasureString() method.

"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

Re: Create pixel dimensions of a text string

califax2k10-May-09 21:24

califax2k

10-May-09 21:24

thanks for your reply. I forgot to mention that I want to limit myself to the WPF API. Nevermind, your answer helped me figure out the WPF-way of doing it.

I am using now an instance of FormattedText und ask its Width and Height properties.

Interestingly there exists a method GetMaxLineWidths() in this class but it doesn't work as I expected. It always returns {null}.

Regards,

Lars

#pragma error( disable : * )

BasedOn Property

#realJSOP8-May-09 2:52

#realJSOP

8-May-09 2:52

I'm looking at this problem again, and I still haven't been able to figure out why it's not working. I have a number of XAML files in a WPF UserControl library that contain various elements.

In Resources.XAML:

<ImageBrush x:Key="ImgBrushQuickLaunch" Stretch="Fill"
                      ImageSource="/MyResourcesLib;component/Images/GlassQuickLaunch64.png" />

In Styles.XAML:

<Style TargetType="{x:Type Button}" x:Key="StyleUDPButton">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsEnabled" Value="false">
                        <Setter Property="Opacity" Value="0.40" />
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<Style x:Key="StyleButtonQuickLaunch" TargetType="{x:Type Button}"
                 BasedOn="{StaticResource StyleUDPButton}">
        <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate>
                <Border CornerRadius="18" Background="{DynamicResource UDPQuickLaunch}">
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Finally, in the main application Window (in the main application), I'm doing this:

<Window x:Class="TestingPlatform.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="300">
    <Grid>
        
        <Button Name="button1" Style="{DynamicResource StyleButtonQuickLaunch}" 
                Margin="60,58,0,0" HorizontalAlignment="Left" VerticalAlignment="Top" 
                Height="37" Width="37"
                BorderThickness="0" BorderBrush="Transparent" />
    </Grid>
</Window>

My problem is that despite there being no errors or warnings, the button does not show up in either the designer, nor the running application. In fact, I can't get the button to show up at all unless the custom style isn't attached, even if I take off the BasedOn property.

Re: BasedOn Property

Pete O'Hanlon8-May-09 4:47

Pete O'Hanlon

8-May-09 4:47

John - this should fix it. In your App.xaml, you need to add these resource dictionaries to the global resources using:

<Application.Resources>
  <ResourceDictionary>
    <ResourceDictionary.MergedDictionaries>
      <ResourceDictionary Source="Resources.xaml" />
      <ResourceDictionary Source="Styles.xaml" />
    </ResourceDictionary.MergedDictionaries>
  </ResourceDictionary>
</Application.Resources>

"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

Re: BasedOn Property

#realJSOP8-May-09 5:32

#realJSOP

8-May-09 5:32

I'd already done that.

Re: BasedOn Property

Mark Salsbery8-May-09 7:45

Mark Salsbery

8-May-09 7:45

As I mentioned in your previous post on this, you don't have anything visible in your
button template, so you won't see anything.

For example, if I change your template to...

<Style x:Key="StyleButtonQuickLaunch" TargetType="{x:Type Button}"
             BasedOn="{StaticResource StyleUDPButton}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate>
                <Border CornerRadius="18" <code>BorderBrush="DarkGreen" BorderThickness="2" Background="LightGreen"</code>>
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

...then use the style on a button something like this...

<StackPanel>
    <Button Name="button1" Style="{DynamicResource StyleButtonQuickLaunch}" Height="50" />
</StackPanel>

...then it works great.

That's why I asked you before if re-templating controls all the time is really what you want,
or do you just want to just modify certain properties of existing controls using style setters....

Mark

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

Video Conferencing Application in wpf

JS 20088-May-09 0:48

JS 2008

8-May-09 0:48

Need a sample video Conferencing application using wpf

Re: Video Conferencing Application in wpf

Pete O'Hanlon8-May-09 1:02

Pete O'Hanlon

8-May-09 1:02

Jeena S wrote:
Need a sample video Conferencing application using wpf

Try rentacoder then; or search google for one.

"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

Re: Video Conferencing Application in wpf

Mark Salsbery8-May-09 7:37

Mark Salsbery

8-May-09 7:37

I'll give you mine but it's pretty expensive Smile | :)

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

Generate Dynamic XAML

the_jat7-May-09 19:42

the_jat

7-May-09 19:42

Is there a way I can create forms dynamically(not load, but create), and get the XAML of the form as the output. Is there a tool that can do it? In which I could specify the location and type of control I want to put on the form?

Thanks

Re: Generate Dynamic XAML

Pete O'Hanlon7-May-09 22:32

Pete O'Hanlon

7-May-09 22:32

As XAML is just XML, you could write it out using the XML features of .NET and then compile it/load it using the XamlReader class.

"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

Create datetime, time and duration control?

salon7-May-09 19:34

salon

7-May-09 19:34

I want to create datetime, time and duration control...
I have created the datecontrol by using datepicker available in Silverlight....

Do we have any existing controls available in Silverlight 2.0 so that I can make datetime, time and duration controls...?

Or have to extend some controls to get above controls?

Can anybody have some code / hyperlinks from where I can get the idea?

type-ahead control in WPF

GaneshSharma7-May-09 7:46

GaneshSharma

7-May-09 7:46

How to write a type-ahead (suggests) control in WPF.

thanks
Ganesh

Re: type-ahead control in WPF

sivaddrahcir18-May-09 13:58

sivaddrahcir

18-May-09 13:58

Here is an example:
WPF Autocomplete Textbox Control[^]

I have used the AutoCompleteBox from the Silverlight toolkit before. You could probably get some ideas from that code:
http://www.codeplex.com/Silverlight[^]

Blog:
http://windowsclientdevelopment.spaces.live.com
FAQs:
http://windowspresentationfoundation.wikispaces.com
http://windowsmobile.wikispaces.com
http://vsto.wikispaces.com

How to set AutomationProperty to a WPF ListItem.

tapas19797-May-09 7:00

tapas1979

7-May-09 7:00

I have ListBox in test.xaml:

<grid>
<listbox margin="12,28,0,0" name="ListBox1" horizontalalignment="Left" width="77" height="100" verticalalignment="Top">;
;

And in the test.xaml.cs file, I initialized the ListBox as
for (int i=1; i<=50; i++)
{
ListBox1.Items.Add("Item" + i);
}

Now I want to set a "HelpText" AutomationProperty to each of the ListItems. How do I do it?

I heard it could be done through Binding? Can some one provide me the required info?

Thanks.

Re: How to set AutomationProperty to a WPF ListItem.

tapas19797-May-09 7:02

tapas1979

7-May-09 7:02

[Reposting; Some problem in text display]

I have a test.xaml:

<Grid>
<ListBox Margin="12,28,0,0" Name="ListBox1" HorizontalAlignment="Left" Width="77" Height="100" VerticalAlignment="Top" />;
</Grid>;

And in the test.xaml.cs file, I initiatilize the ListBox
for (int i=1; i<=50; i++)
{
ListBox1.Items.Add("Item" + i);
}

Now I want to set a HelpText AutomationProperty to each of the ListItems. i.e. HelpText1 to Item1, HelpText2 to Item2 and likewise. How do I exactly do it?

Thanks

Help needed regarding HeaderedContentControl

Ravi Mori7-May-09 4:37

Ravi Mori

7-May-09 4:37

Hello..
I want some help from you guys in my wpf project.
I prepared my project using MVVM pattern.

I am using HeaderedContentControl and in content presenter of that i am using tab control.

MyControl.xaml

<Window.Resources>
<Style x:Key="HeaderStyle" TargetType="{x:Type HeaderedContentControl}">
<Setter Property="HeaderTemplate">
<Setter.Value>
<DataTemplate>
<Border BorderBrush="LightGray" BorderThickness="1" CornerRadius="5" Margin="4" Padding="4" SnapsToDevicePixels="True">

<TextBlock FontSize="14" FontWeight="Bold" Foreground="White" HorizontalAlignment="Center" Text="{TemplateBinding Content}" />
</Border>
</DataTemplate>
</Setter.Value>
</Setter>
<Setter Property="IsTabStop" Value="False" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type HeaderedContentControl}">
<DockPanel>
<ContentPresenter
DockPanel.Dock="Top"
ContentSource="Header"
ContentTemplate="{TemplateBinding HeaderTemplate}"
/>
<ContentPresenter
ContentSource="Content"
ContentTemplate="{TemplateBinding ContentTemplate}"
/>
</DockPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

<DataTemplate x:Key="MyWorkingTemplate">
<TabControl
IsSynchronizedWithCurrentItem="True"
ItemsSource="{Binding}"
ItemTemplate="{StaticResource ClosableTabItemTemplate}"
Margin="4"
/>
</DataTemplate>
</Window.Resources>

<HeaderedContentControl
Content="{Binding Path=Workspaces}"
ContentTemplate="{StaticResource MyWorkingTemplate}"
Header="My Tabs"
Style="{StaticResource HeaderStyle}"
/>

In Content template my all bindings working fine with viewmodel..But my problem is,in my header template here i have textblock and now i want here some content control and binding two different views here and show it according to requirement..
Any help??

[Message Deleted]

Cl@nd£$t|n07-May-09 0:42

Cl@nd£$t|n0

7-May-09 0:42

[Message Deleted]

Re: Widh & Height with percentage

Pauwels Bart7-May-09 1:05

Pauwels Bart

7-May-09 1:05

Hi,

Take a look at this:
http://stackoverflow.com/questions/717299/wpf-setting-the-width-and-height-as-a-percentage-value[^]

To add an image:

<Button>
  <Image Source="Resources\Icons\NewDocumentHS.png"/>
</Button>

Hope this helps

Save the first page of a word as picture

Prajeesh7-May-09 0:28

Prajeesh

7-May-09 0:28

Hi,
I have a word file. I want to save the first page as a picture. How can I do it using C# code?

Thanks,
Prajeesh

Re: Save the first page of a word as picture

Pete O'Hanlon7-May-09 0:29

Pete O'Hanlon

7-May-09 0:29

Please pick a more appropriate forum.

"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 to use staticresource in .cs

daveyerwin6-May-09 10:42

daveyerwin

6-May-09 10:42

i have a RadialGradiantBrush in the app.xaml

<Application.Resources>
        <RadialGradientBrush x:Name="RGB1">
            <GradientStop Color="AntiqueWhite" Offset="0.0" />
            <GradientStop Color="LightSalmon" Offset="0.25" />
            <GradientStop Color="LightBlue" Offset="0.75" />
            <GradientStop Color="Wheat" Offset="1.0" />
        </RadialGradientBrush>
    </Application.Resources>

I assign it to a background in the generic.xaml

<Canvas x:Name="RightCanvas"  Grid.Column="2" Background = "{StaticResource RGB1}"/>

How can i do this in the .cs file

RightCanvas.Background = "{StaticResource RGB1}" as RadialGradiantBrush

?
Thank you .

Re: How to use staticresource in .cs

Mark Salsbery6-May-09 12:24

Mark Salsbery

6-May-09 12:24

RightCanvas.Background = Application.Current.Resources["RGB1"] as RadialGradientBrush;

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

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