单位换算帮助-Windows Phone 7 [英] Unit Conversion Help - windows phone 7

问题描述

我正在尝试为将转换英里，米，公里的程序(Windows Phone 7)编写代码.
每当我尝试运行它时，它就会崩溃.我是新来的.

这是我的代码...我有3个文本框，而我要尝试做的是，如果我在任何一个框中输入一个数字，其他两个框将进行转换.

I''m trying to write code for a program(windows phone 7) that will convert miles, meters, kilometers.
Everytime I try to run it it crashes. I''m new at this.

Here is my code.... I have 3 text boxes and what I''m trying to do is if I put a number in any one box that the other two boxes will so the conversion.

{
    public partial class MainPage : PhoneApplicationPage
    {
        // Constructor
        public MainPage()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            decimal kilotoal;
            decimal milettl;
            decimal metttl;

          kilotoal = Convert.ToDecimal(KilometersBlock.Text);
          milettl = Convert.ToDecimal(txtmile.Text);
          metttl = Convert.ToDecimal(MetreBlock.Text);

               kilotoal = milettl*1.609m;
               metttl = milettl * 1609.3m;
               kilotoal = metttl / 1000m;
               milettl = metttl * 0.00062137119m;
             milettl = kilotoal * 0.6214m;
             metttl = kilotoal * 1000m;

            answer.Text= milettl.ToString();
            answer.Text = metttl.ToString();
            answer.Text = kilotoal.ToString();
        }

        private void button2_Click(object sender, RoutedEventArgs e)
        {
            txtmile.Text = "";
            KilometersBlock.Text = "";
            MetreBlock.Text = "";

        }
    }
}

推荐答案

{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void txtMeter_TextChanged(object sender, EventArgs e)
        {
            if (flag)
            {
                try
                {
                    txtKiloMeter.Text = String.Format("{0:###0.000}", (double.Parse(txtMeter.Text) / 1000));
                }
                catch (Exception)
                {
                    txtKiloMeter.Text = "";
                }
            }
        }

        private void txtKiloMeter_TextChanged(object sender, EventArgs e)
        {
            if (!flag)
            {
                try
                {
                    txtMeter.Text = String.Format("{0:###0.000}", (double.Parse(txtKiloMeter.Text) * 1000));
                }
                catch (Exception)
                {
                    txtMeter.Text = "";
                }
            }
        }
        bool flag = false;
        private void txtMeter_Enter(object sender, EventArgs e)
        {
            flag = true;
        }

        private void txtMeter_Leave(object sender, EventArgs e)
        {
            flag = false;
        }


    }
}

Sumant Kumar(软件工程师)

Sumant Kumar (Software Engineer)

这篇关于单位换算帮助-Windows Phone 7的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！