How do I add controls at runtime?

Question

I would like to add controls at run time, but cannot get the code to work.  I have the following :-

            int numImages = 15;
            string path = "file:///C:/Users/Viv/images/Blank.png";
            int leftPosn;

            for (int i = 1; i <= numImages; i++)
                {
                Image myImage = new Image();
                leftPosn = 100 + i * 50;
                // Set the image's properties.
                myImage.Name = "image" + i.ToString();
                myImage.Visibility = Visibility.Visible;
                myImage.Width = 43;
                myImage.Height = 55;
                myImage.Margin = leftPosn,0,0,0;  // this does not work
                myImage.Source = path;  // this does not work
                }

I would also like to be able to change the visibility of some images and amend the image displayed.  If I use the following I am guessing that it will not work, but am unsure how to code it.

string imageName;
imageName = "image5";
string path2 = "file:///C:/Users/Viv/Pictures/images/Green.png"

imageName.Visibility = Visibility.Visible;
imageName.Source = path2;

Any help appreciated,

Viv

Answer 1

You need to add the image to the controls for the form:

myForm.Controls.Add(myImage);

Hope this helps.

---

www.insteptech.com ; msmvps.com/blogs/deborahk
We are volunteers and ask only that if we are able to help you, that you mark our reply as your answer. THANKS!

Answer 2

Thanks for the suggestion Deborah, I tried adding the following :-

Window1.Controls.Add(myImage);

to my code but there is no definition for Controls in Window1, (I accepted the default name when I created my WPF application).

Viv

Answer 3

You can't add it directly to the Window, you need to add it to your layout control.  If you didn't change it from the default it would be a Grid.  However, you will to go into your Xaml and give the Grid an x:name in order to reference it from your code-behind.  Once you do that you can add the control by saying Grid1.Children.Add(myImage);

I would also suggest posting these types of questions in the WPF forums, you'll find more experts there.

---

If this answers your question, please mark the question as answered.

Answer 4

You can't add it directly to the Window, you need to add it to your layout control.  If you didn't change it from the default it would be a Grid.  However, you will to go into your Xaml and give the Grid an x:name in order to reference it from your code-behind.  Once you do that you can add the control by saying Grid1.Children.Add(myImage);

I would also suggest posting these types of questions in the WPF forums, you'll find more experts there.

---

If this answers your question, please mark the question as answered.

Thanks for the suggestion, I tried you code and at least it compiles and runs but I cannot see any images on the form when I run it.  I will follow your suggestion to use the WPF forum.

Viv