C# dynamic object creation/modification?

Question

I can successfully create objects dynamically and name them dynamically. Example: click on a canvas to create an image named 'image1', click somewhere else, and create 'image2' etc. But after that, what if I want to change an attribute based on the name? In my javascript days I would getElementById('image1').style.color = #ffffff;

What about in c#? where is the 'getElementById()' so to speak?

Community · Accepted Answer · 2017-05-23 12:31:44Z

2

In Winforms you can use either

Control c = Form1.Controls.Find("image1", true);

or

int i = Form1.Controls.IndexOfKey("image1")
Control c = Form1.Controls[i];

For WPF things are different, this SO question looks like it might be helpful in that case: How can I find WPF controls by name or type?

edited May 23, 2017 at 12:31

CommunityBot

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answered Oct 25, 2010 at 22:47

WildCrustacean

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2 Comments

Phil Over a year ago

Will this work in wpf? Also, if I'm understanding correctly, after setting up Control c, I can then do something like c.Text = "test"; ???

WildCrustacean Over a year ago

No, WPF is different, but this question may help you there: stackoverflow.com/questions/636383/wpf-ways-to-find-controls And yes, once you have Control c, you can change the text if you want.

Jacob · Accepted Answer · 2016-05-03 22:29:42Z

0

I don't know if I am understanding you correctly.

Usually, working with .NET related technologies, objects are living inside collections. For example, in a windows form project, controls are placed in "Controls" collection (you can access it with this.Controls).

Then, how is it possible to retrieve one specific object? Depends on what you are searching. All objects have some kind of property that you can use as ID.

foreach (Control c in this.Controls)
{
    if (c.ClientID == 'ID than I am looking for')
        performsomeaction();
}

edited May 3, 2016 at 22:29

answered Oct 25, 2010 at 22:42

Jacob

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