Setting the value of an image using a String

Question

I have a string, imgchng, and twenty images, image1, image2, image3,etc.

The value of imgchng is always the name of one of the images.

How would I set the value of the the current image that imgchng is referring to?

For instance, the user sets the value of imgchng as image12. How would I tell image12's source to change?

imgchng.Source = (source goes here); doesn't work, because that would set the property of the string, not the image.

I know how to set the source of the image, just not how to set the source of whatever image the string is referring to.

My intention is to avoid a humongous if statement that would be over 1000 lines long, like the example one below:

        if (textBlock2.Text == "First User Selection")
        {
            if (imgchng == "image1")
            {
                BitmapImage bmp = new BitmapImage(new Uri("/Images/FirstImg.png"));
                image1.Source = bmp;
            }
            else if (imgchng == "image2")
            {
                BitmapImage bmp = new BitmapImage(new Uri("/Images/FirstImg.png"));
                image2.Source = bmp;
            }
            //Continue this for all 20 images
        }
        else if (textBlock2.Text == "Second User Selection")
        {
            if (imgchng == "image1")
            {
                BitmapImage bmp = new BitmapImage(new Uri("/Images/SecondImg.png"));
                image1.Source = bmp;
            }
            else if (imgchng == "image2")
            {
                BitmapImage bmp = new BitmapImage(new Uri("/Images/SecondImg.png"));
                image2.Source = bmp;
            }
            //Continue this for all 20 images
        }
        else if (textBlock2.Text == "Third User Selection")
        {
            if (imgchng == "image1")
            {
                BitmapImage bmp = new BitmapImage(new Uri("/Images/ThirdImg.png"));
                image1.Source = bmp;
            }
            else if (imgchng == "image2")
            {
                BitmapImage bmp = new BitmapImage(new Uri("/Images/ThirdImg.png"));
                image2.Source = bmp;
            }
            //Continue this for all 20 images
        }
        else if (textBlock2.Text == "Fourth User Selection")
        {
            if (imgchng == "image1")
            {
                BitmapImage bmp = new BitmapImage(new Uri("/Images/FourthImg.png"));
                image1.Source = bmp;
            }
            else if (imgchng == "image2")
            {
                BitmapImage bmp = new BitmapImage(new Uri("/Images/FourthImg.png"));
                image2.Source = bmp;
            }
            //Continue this for all 20 images
        }

Basically what I'm trying to do is, as @ctacke said, given the string 'image1', how do I get the instance of the control named 'image1'?

what do you mean by image12's source.. isn't that the name of the image itself..? — Shekhar_Pro
– Shekhar_Pro, Commented May 28, 2011 at 3:23
The source of image12 is a small 50*50 image. I know how to set the background of the image, just not how to decide which image to change without using a humongous if statement. — JavaAndCSharp
– JavaAndCSharp, Commented May 28, 2011 at 14:47
So is the question here "Given the string 'image1', how do I get the instance of the control named 'image1'?" — ctacke
– ctacke, Commented May 28, 2011 at 16:28

Shanadas · Accepted Answer · 2011-05-28 19:44:17Z

2

Declare a BitmapImage array of 20 images. Bind that to the UI. Take the user selection as an integer. Access the image from array using index (obviously user input -1).Change the source of that image. Does this resolve your problem?

answered May 28, 2011 at 19:44

Shanadas

5351 gold badge6 silver badges22 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

JavaAndCSharp Over a year ago

Yes, that solves it. Sort of tedious to do all of the BitmapImage img10 = new BitmapImage();s (I had to do this on 5 different XAML pages), but it's still a shorter solution. Thanks.

Amresh Kumar · Accepted Answer · 2011-05-28 04:48:57Z

-1

To set the source of the image you have to do the following.


BitmapImage bmp=new BitmapImage(new Uri("your image name will go here"));
image.Source=bmp;

Hope this helps.

answered May 28, 2011 at 4:48

Amresh Kumar

1,44517 silver badges31 bronze badges

1 Comment

JavaAndCSharp Over a year ago

No, what I want to do is detect which image to change based on the value of imgchng.For instance, if the value of ingchng is "image1", then I want to change the value of image1. If the value of imgchng is "image19", then I want to change the background of image19. I know how to set the background of the image- just not how to decide which image to change without using a humongous if statement.

Collectives™ on Stack Overflow

Setting the value of an image using a String

2 Answers 2

1 Comment

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related