IsGTMultiValueConverter.cs

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

namespace FLY.DownBlowing.UI.Client.Converter
{
    public class IsGTMultiValueConverter : IMultiValueConverter
    {
        /// <summary>
        /// values[0] 大于 values[1] 返回true
        /// values[0] 小于等于 values[1] 返回false
        /// 类型不对，返回 false
        /// </summary>
        /// <param name="values"></param>
        /// <param name="targetType"></param>
        /// <param name="parameter"></param>
        /// <param name="culture"></param>
        /// <returns></returns>
        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            if (values.Count() != 3)
                return false;
            double[] v = new double[3];
            for (int i = 0; i < 3; i++)
            {
                if (!double.TryParse(values[i].ToString(), out v[i]))
                    return false;
            }
            if (v[0] > v[1] - v[2])
                return true;
            return false;

        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}