/// <summary> /// MS /// </summary> /// <param name="o"></param> /// <returns></returns> public static int ToIn32(object o) { if (o != null) { return ((IConvertible)o).ToInt32(null); } return 0; } /// <summary> /// CSDN /// </summary> /// <param name="o"></param> /// <returns></returns> static int ToInt(object o) { if (o is int) return (int)o; else if (o is short) return (int)(short)o; else if (o is byte) return (int)(byte)o; else if (o is long) return (int)(long)o; else if (o is double) return (int)(double)o; else if (o is float) return (int)(float)o; else if (o is decimal) return (int)(decimal)o; else if (o is uint) return (int)(uint)o; else if (o is ushort) return (int)(ushort)o; else if (o is ulong) return (int)(ulong)o; else if (o is sbyte) return (int)(sbyte)o; else return (int)double.Parse(o.ToString()); }
http://msdn.microsoft.com/zh-cn/library/system.iconvertible.aspx
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