how we will match the content of image control in wpf

Question

1.75/5 (3 votes)

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i want if that image control will contain gol1s2.gif image it will transfer to window2.xaml form otherwise it will transfer to window3.xaml form.

<window x:class="WpfApplication1.Window1" xmlns:x="#unknown">
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="509">
    <grid height="275" width="271">
        <Image Margin="10,10,61,115" Grid.Row="0" Grid.Column="0"  Source="C:\Users\New1\Desktop\ba\WpfApplication1\WpfApplication1\img\gol1s2.gif" Name="image1" Stretch="Fill" />
        <Button Height="23" Margin="100,0,96,48" Name="btnSelect" VerticalAlignment="Bottom" Click="btnSelect_Click">Select</Button>
    </grid>
</window>

page behind code is

string a=@"C:\Users\New1\Desktop\ba\WpfApplication1\WpfApplication1\img\gol1s2.gif";
            if(image1=a)
            {
                Window2 r=new Window2();
                r.Show();
            }
            else
            {
                 Window3 rr=new Window3();
                rr.Show();
            }

In this coding i am getting error is

Cannot implicitly convert type 'string' to 'System.Windows.Controls.Image'

Sir i am getting that error only

Posted 28-Mar-11 2:01am

Banajyotsna

Updated 28-Mar-11 2:15am

v3

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Slacker007 29-Mar-11 6:02am

@apfelmuuus: Why don't you take this comment and add it as a solution...maybe expand your solution a little. Then delete this comment. Don't be afraid to answer a question if you think you have a possible solution. :)

Apfelmuuus 29-Mar-11 7:23am

Done!
Thank you for giving the necessary motivation:)

2 solutions

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Apfelmuuus · Accepted Answer · 2011-03-29T00:45:00

Solution 2

There is a protected property of Image called BaseUri so you could do a little hack and create a new class that inherits the Image class and has got a function returning base.BaseUri.AbsolutePath. Then call this function to check wether the image refers to the path or not.

However, I think there could be a better solution I don't know yet.

[Edit]

Now I've got one:)

I'm using the Image.Source property that refers to a URI so I have to declare the string to check equality as follows:

string uri = "C:/Users/New1/Desktop/ba/WpfApplication1/WpfApplication1/img/gol1s2.gif";

This is necessary because after instantiating the Image object (you can still use an absolute or relative path on your hard-disk-drive for instantiating) the reference to the Image-File is saved as URI.

Finally check if the correct image has been loaded:

if (image1.Source.ToString().Contains(uri))
{
    // Do something
}

Posted 29-Mar-11 0:45am

Apfelmuuus

Updated 29-Mar-11 1:24am

v3

Comments

Slacker007 29-Mar-11 7:25am

There you go! :)

Tarun.K.S 29-Mar-11 7:27am

Nope I tried this before but it didn't work.
The problem is your uri has this "/" slash which is not correct. Its this "\" slash.

Apfelmuuus 29-Mar-11 7:45am

Maybe it's a reason of the framework you are using. There are some differences between .net 3.0 , 3.5 and 4.0!

I tried both slashes and figured out that "\" doesn't work in my case but there are no problems with "/". Furthermore an URI always uses "/".

@Tarun.K.S. Which framework version do you use?

Tarun.K.S 29-Mar-11 7:48am

I have Framework 3.5.
The point is that the path which Windows recognizes is with "\" slash.

Apfelmuuus 29-Mar-11 8:06am

That's right!
However, Image.Source doesn't refer to a path on hdd but rather to an URI so I cannot understand why "\" has worked in your case. Did you use Image.Source or something else?

Tarun.K.S 29-Mar-11 8:10am

You can have a look at my answer on how I managed to make them equal. It may not be the best solution but it works!

Banajyotsna 30-Mar-11 6:37am

Thanks a lot sir.Now it is working.

Apfelmuuus 30-Mar-11 7:03am

Great! I'm glad I could help you.

Tarun.K.S · Accepted Answer · 2011-03-29T01:54:00

Apfelmuus was close, but the problem is in the URI.

Here is one way of solving it but it may not be an elegant one.

C#

String orgFile = @"C:\Documents and Settings\aUser\My Documents\My Pictures\Winter.jpg";
String orf = orgFile.Replace("\\", "/");
ImageSource imgSource = image1.Source;
String str = imgSource.ToString();
String fileName = str.Remove(0, 8);
if (fileName.Equals(orf))
{
    MessageBox.Show("Equal");
}

A few problems that I encountered was that :

1) the String str returns the source like this : "file:///C:\Documents and Settings\aUser\My Documents\My Pictures\Winter.jpg". Its of Pack URI form.
Solution : so I removed the first 8 letters.

2) next was that it won't work with Images stored as resources in your application as the source will return a pack uri like this : "pack://application:,,,/WpfApplication1;component/Winter.jpg".

If this solution doesn't suit you, then the first solution provided by Apfelmuus can be considered.