1using System;
 2
 3namespace solidware.financials.windows.ui.views.controls
 4{
 5    static public class ObjectExtensions
 6    {
 7        static public bool IsNumeric(this object value)
 8        {
 9            return value.Is<short>() || value.Is<int>() || value.Is<long>() || value.Is<decimal>() || value.Is<float>() || value.Is<double>();
10        }
11
12        static public bool IsNull<T>(this T item) where T : class
13        {
14            return item == null;
15        }
16
17        static public bool Is<T>(this object value)
18        {
19            return value is T;
20        }
21
22        static public T As<T>(this object value)
23        {
24            if (value is T)
25                return (T) value;
26            if (value is Observable)
27                return (T) ((Observable) value).Value;
28            return (T) Convert.ChangeType(value, typeof (T));
29        }
30    }
31}