MathConverter.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Data;

namespace ThickTcpUiInWindow.Converter
{
    public class Multi2Converter : IMultiValueConverter
    {
        #region IMultiValueConverter 成员

        public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (values.Length != 2)
                return 0;
            if ((!(values[0] is int)) && (!(values[0] is double)))
                return 0;

            if ((!(values[1] is int)) && (!(values[1] is double)))
                return 0;

            double v0, v1;
            if (values[0] is int)
            {
                int p = (int)values[0];
                if (p == 99999998)
                    p = 0;
                v0 = p;
            }
            else
                v0 = (double)values[0];

            if (values[1] is int)
            {
                int p = (int)values[1];
                if (p == 99999998)
                    p = 0;
                v1 = p;
            }
            else
                v1 = (double)values[1];

            return v1 * v0;
        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)
        {
            return null;
        }

        #endregion
    }

    public class Add2Converter : IMultiValueConverter
    {
        #region IMultiValueConverter 成员

        public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (values.Length != 2)
                return 0;
            if ((!(values[0] is int)) && (!(values[0] is double)))
                return 0;

            if ((!(values[1] is int)) && (!(values[1] is double)))
                return 0;

            double v0, v1;
            if (values[0] is int)
            {
                int p = (int)values[0];
                if (p == 99999998)
                    p = 0;
                v0 = p;
            }
            else
                v0 = (double)values[0];

            if (values[1] is int)
            {
                int p = (int)values[1];
                if (p == 99999998)
                    p = 0;
                v1 = p;
            }
            else
                v1 = (double)values[1];

            return v1 + v0;
        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)
        {
            return null;
        }

        #endregion
    }
}