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POStatic classes C# constructor OOP
 

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  1. POStatic classes C# constructor OOP
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    <p>I am new to OOP and I think I don't understand static classes.</p> <p>I want to create a static class Actions and one static method for changing textblock apperance..</p> <p>Here is my code:</p> <pre><code>public static class Tools { public enum StatusOption { Online, Offline, Warning } } public class Actions { private SortedDictionary&lt;Tools.StatusOption,SolidColorBrush&gt; StatusColors = new SortedDictionary&lt;Tools.StatusOption,SolidColorBrush&gt;(); public Actions() { StatusColors.Add(Tools.StatusOption.Online, new SolidColorBrush(Colors.Green)); StatusColors.Add(Tools.StatusOption.Offline, new SolidColorBrush(Colors.Red)); StatusColors.Add(Tools.StatusOption.Warning, new SolidColorBrush(Colors.Orange)); } public void SetStatus(Tools.StatusOption _statusOption, TextBlock _txtBlock) { _txtBlock.Text = _statusOption.ToString(); _txtBlock.Foreground = StatusColors[_statusOption]; } } </code></pre> <p>It works, but I have to create several instances of my class, which is IMHO useless.</p> <pre><code>private void Close_Click(object sender, RoutedEventArgs e) { Actions a1 = new Actions(); a1.SetStatus(Tools.StatusOption.Offline, StatusTextBlock); } private void Open_Click(object sender, RoutedEventArgs e) { Actions a2 = new Actions(); a2.SetStatus(Tools.StatusOption.Online, StatusTextBlock); } </code></pre> <p>I would prefer it just like this:</p> <pre><code>private void Open_Click(object sender, RoutedEventArgs e) { Actions.SetStatus(Tools.StatusOption.Online, StatusTextBlock); } </code></pre> <p>I know, I have to define a static class and static constructor:</p> <pre><code>public static class Actions { private SortedDictionary&lt;Tools.StatusOption,SolidColorBrush&gt; StatusColors = new SortedDictionary&lt;Tools.StatusOption,SolidColorBrush&gt;(); static Actions() { StatusColors.Add(Tools.StatusOption.Online, new SolidColorBrush(Colors.Green)); // .... } } </code></pre> <p>The problem is, I can not access to private member StatusColors in static constructor, and I can not create instance of StatusColors.</p> <p>Any Ideas how to solve it?</p> <p>Thanks. </p>
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