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Change the source of an image on button click

Posted on 2014-01-18
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Last Modified: 2014-11-12
I need to change the source of an image on button click.

The compie error I am getting is:

Cannot implicitly convert type 'string' to 'System.Windows.Media.ImageSource'

My code:

void cmdHole1_Tap(object sender,
                     System.Windows.Input.GestureEventArgs e)
            // Place image into imgHole1
            {
                string strImageSource = "C:\\Develop\\Apps\\Holdem\\Images\\cards_png\\C1Full.png";
                imgHole1.Source = strImageSource;
                int intTest1 = 1;

            }

What should I change?

Thanks
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Question by:Dovberman
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Accepted Solution

by:
Fernando Soto earned 300 total points
ID: 39791141
Hi Dovberman;

The following code snippet should do what you need.

void cmdHole1_Tap(object sender, System.Windows.Input.GestureEventArgs e)
// Place image into imgHole1
{
    string strImageSource = "C:\\Develop\\Apps\\Holdem\\Images\\cards_png\\C1Full.png";
    BitmapImage bmi = new BitmapImage();
    bmi.BeginInit();
    bmi.UriSource = new Uri(strImageSource, UriKind.Absolute);
    bmi.EndInit();
    imgHole1.Source = bmi;
    int intTest1 = 1;
}

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Author Comment

by:Dovberman
ID: 39791296
I get a namespace error.

What is the directive for PNG and JPG images?

I tried using System.Windows.Media.Imaging;

Thanks,
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LVL 62

Expert Comment

by:Fernando Soto
ID: 39791393
I had tested my code using a jpg image file and did not have a problem using the namespace System.Windows.Media.Imaging.

What the exact exception and inner exception if any.
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Author Comment

by:Dovberman
ID: 39791465
This code does not produce errors:

               string strImageSource = "C:\\Develop\\Apps\\Holdem\\Images\\cards_png\\C1Full.png";
                BitmapImage bmi = new BitmapImage();
                bmi.UriSource = new Uri(strImageSource, UriKind.Absolute);
                imgHole1.Source = bmi;

This threw errors:

bmi.BeginInit();

Error      2      'System.Windows.Media.Imaging.BitmapImage' does not contain a definition for 'BeginInit' and no extension method 'BeginInit' accepting a first argument of type 'System.Windows.Media.Imaging.BitmapImage' could be found (are you missing a using directive or an assembly reference?)      C:\Users\David\documents\visual studio 2012\Projects\PhoneApp1\PhoneApp1\MainPage.xaml.cs      67      21      PhoneApp1

Is it OK to refer to a bitmap when actually using PNG images?

Thanks,
0
 
LVL 62

Expert Comment

by:Fernando Soto
ID: 39791499
I was not aware that this was a Windows Phone application because of that Windows Phone does not support the BeginInit and EndInit methods so just remove those two lines from the  code snippet that I posted and try it.
0
 
LVL 62

Expert Comment

by:Fernando Soto
ID: 39791680
To your question, "s it OK to refer to a bitmap when actually using PNG images?", yes.
0
 

Author Comment

by:Dovberman
ID: 39791704
Thank you, The emulator does not render the image, but the event is properly triggered. Testing has been difficult.

This works now.

You have been very helpful.
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Author Closing Comment

by:Dovberman
ID: 39791705
Very helpful.

Thanks
0
 
LVL 62

Expert Comment

by:Fernando Soto
ID: 39791719
.
Not a Problem, always glad to help out.
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