C#實現單位換算器
本文實例為大傢分享瞭C#實現單位換算器的具體代碼，供大傢參考，具體內容如下
一、闡述
進制間轉換：十六進制、十進制、八進制、二進制。
長度間轉換：毫米、厘米、米、公裡、英寸、英尺、碼。
面積間轉換：平方毫米、平方厘米、平方米、平方公裡、平方英寸、平方英尺、平方碼。
體積間轉換：立方毫米、毫升、升、立方米、立方英寸、立方英尺、立方碼。
二、效果
1. 進制轉換
通過輸入即可轉換為另一個進制值。
2. 長度轉換
用戶輸入進行單位換算，可從目標中選擇需求單位。
選中需求後，輸入框解除隻讀，輸入即可進行換算。
3. 面積轉換
同樣，使用正則匹配對正數小數和正整數，而進制轉換另外規則匹配。
4. 體積轉換
當重選單位類型時會清空輸入框。
代碼
using System;
using System.Text.RegularExpressions;
using System.Windows.Forms;
namespace UnitConversion
{
public partial class Form1 : Form
{
// 默認選項
private string unitItem = "進制";
// 用戶選擇單位度量 的 轉換基數
private double customConversionBase = 0;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
unitComboBox.Items.Add("進制");
unitComboBox.Items.Add("長度");
unitComboBox.Items.Add("面積");
unitComboBox.Items.Add("體積");
}
/*
* 進制轉換
*/
private void BaseConversion(TextBox text, string val)
{
if (text == textBox1 && Regex.IsMatch(val, @"[0-1]+$")) //二進制轉換
{
long oct = Convert.ToInt64(val, 2);
textBox2.Text = Convert.ToString(oct, 8);
textBox3.Text = oct.ToString();
textBox4.Text = Convert.ToString(oct, 16);
}
else if (text == textBox2 && Regex.IsMatch(val, @"[0-7]+$")) //八進制轉換
{
long oct = Convert.ToInt64(val, 8);
textBox1.Text = Convert.ToString(oct, 2);
textBox3.Text = oct.ToString();
textBox4.Text = Convert.ToString(oct, 16);
}
else if (text == textBox3 && Regex.IsMatch(val, @"[0-9]+$")) //十進制轉換
{
long oct = Convert.ToInt64(val);
textBox1.Text = Convert.ToString(oct, 2);
textBox2.Text = Convert.ToString(oct, 8);
textBox4.Text = Convert.ToString(oct, 16);
}
else if (text == textBox4 && Regex.IsMatch(val, @"[A-Fa-f0-9]+$")) //十六機制轉換
{
long oct = Convert.ToInt64(val, 16);
textBox1.Text = Convert.ToString(oct, 2);
textBox2.Text = Convert.ToString(oct, 8);
textBox3.Text = oct.ToString();
}
}
/*
* 長度
*/
private void lengthConversion(TextBox text, string val)
{
if (text == textBox1)
{
double mm = Convert.ToDouble(val);
textBox2.Text = Convert.ToString(mm * 0.1);
textBox3.Text = Convert.ToString(mm * 0.001);
textBox4.Text = Convert.ToString(mm * 0.000_001);
textBox5.Text = Convert.ToString(mm * customConversionBase);
}
else if (text == textBox2)
{
double cm = Convert.ToDouble(val);
textBox1.Text = Convert.ToString(cm * 10);
textBox3.Text = Convert.ToString(cm * 0.01);
textBox4.Text = Convert.ToString(cm * 0.000_01);
textBox5.Text = Convert.ToString(cm * customConversionBase * 10);
}
else if (text == textBox3)
{
double m = Convert.ToDouble(val);
textBox1.Text = Convert.ToString(m * 1000);
textBox2.Text = Convert.ToString(m * 100);
textBox4.Text = Convert.ToString(m * 0.001);
textBox5.Text = Convert.ToString(m * customConversionBase * 1000);
}
else if (text == textBox4)
{
double km = Convert.ToDouble(val);
textBox1.Text = Convert.ToString(km * 1000_000);
textBox2.Text = Convert.ToString(km * 100_000);
textBox3.Text = Convert.ToString(km * 1000);
textBox5.Text = Convert.ToString(km * customConversionBase * 1000_000);
}
else if (text == textBox5)
{
double en = Convert.ToDouble(val);
textBox1.Text = (en / customConversionBase).ToString();
}
}
/*
* 面積
*/
private void areaConversion(TextBox text, string val)
{
if (text == textBox1)
{
double mm = Convert.ToDouble(val);
textBox2.Text = Convert.ToString(mm * 0.01);
textBox3.Text = Convert.ToString(mm * 0.000_001);
textBox4.Text = Convert.ToString(mm * 0.000_000_000_001);
textBox5.Text = Convert.ToString(mm * customConversionBase);
}
else if (text == textBox2)
{
double cm = Convert.ToDouble(val);
textBox1.Text = Convert.ToString(cm * 100);
textBox3.Text = Convert.ToString(cm * 0.000_1);
textBox4.Text = Convert.ToString(cm * 0.000_000_000_1);
textBox5.Text = Convert.ToString(cm * customConversionBase * 100);
}
else if (text == textBox3)
{
double m = Convert.ToDouble(val);
textBox1.Text = Convert.ToString(m * 1_000_000);
textBox2.Text = Convert.ToString(m * 10_000);
textBox4.Text = Convert.ToString(m * 0.000_001);
textBox5.Text = Convert.ToString(m * customConversionBase * 1_000_000);
}
else if (text == textBox4)
{
double km = Convert.ToDouble(val);
textBox1.Text = Convert.ToString(km * 1000_000_000_000);
textBox2.Text = Convert.ToString(km * 10_000_000_000);
textBox3.Text = Convert.ToString(km * 1000_000);
textBox5.Text = Convert.ToString(km * customConversionBase * 1000_000_000_000);
}
else if (text == textBox5)
{
double en = Convert.ToDouble(val);
textBox1.Text = Convert.ToString(en / customConversionBase);
}
}
/*
* 體積
*/
private void volumeConversion(TextBox text, string val)
{
if (text == textBox1)
{
double cm = Convert.ToDouble(val);
textBox2.Text = Convert.ToString(cm);
textBox3.Text = Convert.ToString(cm * 0.001);
textBox4.Text = Convert.ToString(cm * 0.000_001);
textBox5.Text = Convert.ToString(cm * customConversionBase);
}
else if (text == textBox2)
{
double mL = Convert.ToDouble(val);
textBox1.Text = Convert.ToString(mL);
textBox3.Text = Convert.ToString(mL * 0.001);
textBox4.Text = Convert.ToString(mL * 0.000_001);
textBox5.Text = Convert.ToString(mL * customConversionBase);
}
else if (text == textBox3)
{
double L = Convert.ToDouble(val);
textBox1.Text = Convert.ToString(L * 1000);
textBox2.Text = Convert.ToString(L * 1000);
textBox4.Text = Convert.ToString(L * 0.001);
textBox5.Text = Convert.ToString(L * customConversionBase * 1000);
}
else if (text == textBox4)
{
double m = Convert.ToDouble(val);
textBox1.Text = Convert.ToString(m * 1000_000);
textBox2.Text = Convert.ToString(m * 1000_000);
textBox3.Text = Convert.ToString(m * 1000);
textBox5.Text = Convert.ToString(m * customConversionBase * 1000_000);
}
else if (text == textBox5)
{
double en = Convert.ToDouble(val);
textBox1.Text = Convert.ToString(en / customConversionBase);
}
}
/*
* 輸入換算
*/
private void textBox_TextChanged(object sender, EventArgs e)
{
try
{
TextBox text = (TextBox) sender;
string val = text.Text;
// 不為空 及 正整數或正小數 （進制另外進一步匹配）
if (text.Text == "")
{
return;
}
if (unitItem == "進制")
{
BaseConversion(text, val);
}
else if (Regex.IsMatch(val, @"(^[0-9]{1,}$)|(^[0-9]+(.[0-9]{1,})$)"))
{
switch (unitItem)
{
case "長度":
lengthConversion(text, val);
break;
case "面積":
areaConversion(text, val);
break;
case "體積":
volumeConversion(text, val);
break;
}
}
}
catch (Exception exception) {}
}
/*
* 單位類型選擇
*/
private void unitComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
// 清空 及 復位
textBox1.Text = "";
textBox2.Text = "";
textBox3.Text = "";
textBox4.Text = "";
textBox5.Text = "";
textBox5.ReadOnly = true;
label5.Text = "";
customConversionBase = 0;
unitListBox.Items.Clear();
unitItem = unitComboBox.SelectedItem.ToString();
switch (unitItem)
{
case "進制":
label1.Text = "Bin";
label2.Text = "Oct";
label3.Text = "Dec";
label4.Text = "Hex";
break;
case "長度":
label1.Text = "mm";
label2.Text = "cm";
label3.Text = "m";
label4.Text = "km";
unitListBox.Items.Add("inch");
unitListBox.Items.Add("foot");
unitListBox.Items.Add("yard");
break;
case "面積":
label1.Text = "m²";
label2.Text = "cm²";
label3.Text = "m²";
label4.Text = "km²";
unitListBox.Items.Add("inch²");
unitListBox.Items.Add("foot²");
unitListBox.Items.Add("yard²");
break;
case "體積":
label1.Text = "cm³";
label2.Text = "mL";
label3.Text = "L";
label4.Text = "m³";
unitListBox.Items.Add("inch³");
unitListBox.Items.Add("foot³");
unitListBox.Items.Add("yard³");
break;
}
}
/*
* 單位度量選擇
*/
private void unitListBox_SelectedIndexChanged_1(object sender, EventArgs e)
{
textBox5.ReadOnly = false;
if (unitListBox.SelectedItem != null)
{
label5.Text = unitListBox.SelectedItem.ToString();
switch (label5.Text)
{
case "inch":
customConversionBase = 0.039_37;
break;
case "foot":
customConversionBase = 0.003_281;
break;
case "yard":
customConversionBase = 0.001_094;
break;
case "inch²":
customConversionBase = 0.001_55;
break;
case "foot²":
customConversionBase = 0.000_011;
break;
case "yard²":
customConversionBase = 0.000_001;
break;
case "inch³":
customConversionBase = 0.061_024;
break;
case "foot³":
customConversionBase = 0.000_035;
break;
case "yard³":
customConversionBase = 0.000_001;
break;
}
}
}
}
}
以上就是本文的全部內容，希望對大傢的學習有所幫助，也希望大傢多多支持WalkonNet。