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WPF: Bind a propertie in a WPF user control

Posted on 2010-09-22
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Last Modified: 2012-05-10
HI!

I'm new to WPF so I need some help.

I'm working on a usercontrol.

I have this code.

   xmlns:apng="clr-namespace:Apng;assembly=ApngImage"
    Title="Window1" Height="200" Width="200" Background="Red" >
    <Grid>
        <Border Margin="10,10,10,10">
            <apng:ApngImage Name="apngControl1" Stretch="Fill" Path="chompy2.png" Fps="25" />
        </Border>
    </Grid>

But the image that I have hard coding here "chompy2.png" I like to set from a propertie instead.

How do I  do that?
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Question by:AWestEng
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8 Comments
 
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Gururaj Badam earned 200 total points
ID: 33732356


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by:joriszwaenepoel
joriszwaenepoel earned 200 total points
ID: 33732437
Together with the Binding (see answer from Novice Novice), you also need to set the "DataContext".

For example:

this.DataContext = theObject;
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Expert Comment

by:Gururaj Badam
ID: 33732448
@joriszwaenep… - You're right.

I'd assumed that would have been done as the code snippet is not complete
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Author Comment

by:AWestEng
ID: 33732478
what is this
this.DataContext = theObject;
and where should I put it?
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by:AWestEng
ID: 33732480

<UserControl x:Class="HostingWpfUserControlInWf.ucAPng"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:apng="clr-namespace:Apng;assembly=ApngImage"
Height="144" Width="172" Background="AliceBlue">
<Grid>
<apng:ApngImage Name="apngControl1" Stretch="Fill" Path="{Binding Path=Image}" Fps="25" />
</Grid>
</UserControl>
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by:joriszwaenepoel
joriszwaenepoel earned 200 total points
ID: 33732494
theObject => this is the object with a property called "Image" that you want to use for your databinding

You should put that line of code somewhere in your code, where you have created or selected the object that you want to bind to.  It could be the "Loaded" event, or it could be a property setter in case of a usercontrol ...  
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Assisted Solution

by:Gururaj Badam
Gururaj Badam earned 200 total points
ID: 33732587
Original code

 

Modified

 
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Assisted Solution

by:rajeshjamnadas
rajeshjamnadas earned 100 total points
ID: 33743249
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