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WPF, C# - Is it Possible to Set the ItemsSource of a Control in a Different Class From A Static Method?

Posted on 2011-03-08
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Last Modified: 2012-06-21
Is it Possible to Set the ItemsSource of a Control in a Different Class From A Static Method?

I have an addin (class 1) that allows you to view and filter table records. Below the filters is a ListView control that displays saved queries and a button to open a window that manages those queries. In the window (class 2) you can add, edit, and delete queries. After the user saves changes, I would like to update the ListView control in class 1 from class 2. If possible I would like to use the following syntax:


//Class 1 Static Method:
public static void SetListViewItemsSource(ObservableCollection<Query> queries)
{
      this.listViewControl.ItemsSource = queries;
}

// To Change ItemsSource From Class2:
Class1.SetListViewItemsSource(queryCollection);

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I know this approach is not possible because you cannot use the "this" keyword in a static method. Is there an alternative, WITHOUT having to create and instance of Class1??

Thanks!
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Question by:bickes0724
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6 Comments
 
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Expert Comment

by:dimaj
ID: 35069768
This might be a dumb question...
How are you planning to see the control if you are not instantiating Class1?

As far as an approach goes, take a look at events. You could pass data via EventArgs when a query changes.
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Author Comment

by:bickes0724
ID: 35070178
Class 1 is already instantiated because it is loaded first. The popup window loads from a button clicked on the Class 1. So, when an update to the user saves changes, in Class 2, I just want to copy the changes/collection to the ItemsSource in Class 1.

The event approach sounds promising, I am not positive how to implement it.
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LVL 7

Expert Comment

by:dimaj
ID: 35070418
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Accepted Solution

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bickes0724 earned 0 total points
ID: 35071210
Thank you for your help!!!
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LVL 7

Expert Comment

by:dimaj
ID: 35071797
So, did the events approach work?
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Author Closing Comment

by:bickes0724
ID: 35120641
Thanks
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