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POEvent fires more and more times
 

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    <p>I have a silverlight mvvm application that loads main view with 2 user controls loaded into 2 ContentControls, one with listbox showing items and other with edit button. When i click edit button, 2 new user controls load into the ContentControls, one showing data to edit (EditData) and other having Save and Cancel button (EditAction). When i click save button, it raises an event that is defined in seperate GlobalEvents.cs class like: </p> <pre><code>public event EventHandler OnSaveButtonClicked; public void RaiseSaveButtonClicked() { this.OnSaveButtonClicked(this, EventArgs.Empty); } </code></pre> <p>and i subscribe to it in the other user control EditData, because i need to transfer that edited data via custom EventArgs, so i have put in the constructor of it's ViewModel: </p> <pre><code>this.globalEvents.OnSaveButtonClicked += (s, e) =&gt; SaveData(); </code></pre> <p>and in the Save data: </p> <pre><code>public void SaveData() { globalEvents.RaiseSaveData(EditedGuy); } </code></pre> <p>which raises another event that loads previous user controls into their ControlContent and shows edited data in list box. Thats all fine, but whenever i click on edit and then save again, it raises the event twice, and again 3 times, then 4 and so on. How can i make it to be raised only ONE time? I thought it could be because every time i click edit, a new instance of the user control is loaded and i dont know, maybe the subscription to the event stays, so i have tried to paste </p> <pre><code>this.globalEvents.OnSaveButtonClicked -= (s, e) =&gt; SaveData(); </code></pre> <p>to the Dispose() method but without success. How can i make this work?</p>
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