/// <summary>
/// Tries to get the selected item in a combobox
/// </summary>
/// <typeparam name="TEnum">The Type of the enumeration which holds the items of the combobox</typeparam>
/// <param name="this">The combobox</param>
/// <param name="item">ot parameter for the selected item</param>
/// <returns>true if there was a selection, false otherwise</returns>
public static bool TryGetSelectedEnumItem <TEnum>(this ComboBox @this, out TEnum item) where TEnum : struct, IConvertible
{
var success = @this.TryGetSelectedItem(out Tuple <object, string> enumValue);
item = success ? (TEnum)enumValue.Item1 : default(TEnum);
return(success);
}