复杂数据类型用json字符串表示

//客户端代码

    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server">
            <Services>
                <asp:ServiceReference Path="ColorService.asmx" InlineScript="true" />
            </Services>
        </asp:ScriptManager>
        
        <input type="button" value="Reverse Color" onclick="ReverseColor()" />
        
        <script language="javascript" type="text/javascript">
            function ReverseColor()
            {   //类型的json表示法
                var color = {"Red" : 50, "Green" : 100, "Blue" : 200};
                ColorService.Reverse(color, onSucceeded);
            }
            
            function onSucceeded(result)
            {
                alert(String.format(
                    "Red: {0}\nGreen: {1}\nBlue: {2}",
                    result.Red,
                    result.Green,
                    result.Blue));
            }            
        </script>
    </form>

//WebService

    [WebMethod]
    public Color Reverse(Color color)
    {
        return new Color(
            (byte)(255 - color.Red),
            (byte)(255 - color.Green),
            (byte)(255 - color.Blue));
    }

//实体类

public class Color
    {
        public Color()
        {

        }

        public Color(byte red, byte green, byte blue)
        {
            this.Red = red;
            this.Green = green;
            this.Blue = blue;
        }

        public byte Red;

        public byte Green;

        public byte Blue;
    }