C#实现单位换算器
本文实例为大家分享了C#实现单位换算器的具体代码,供大家参考,具体内容如下
一、阐述
进制间转换:十六进制、十进制、八进制、二进制。
长度间转换:毫米、厘米、米、公里、英寸、英尺、码。
面积间转换:平方毫米、平方厘米、平方米、平方公里、平方英寸、平方英尺、平方码。
体积间转换:立方毫米、毫升、升、立方米、立方英寸、立方英尺、立方码。
二、效果
1. 进制转换
通过输入即可转换为另一个进制值。
2. 长度转换
用户输入进行单位换算,可从目标中选择需求单位。
选中需求后,输入框解除只读,输入即可进行换算。
3. 面积转换
同样,使用正则匹配对正数小数和正整数,而进制转换另外规则匹配。
4. 体积转换
当重选单位类型时会清空输入框。
代码
using System; using System.Text.RegularExpressions; using System.Windows.Forms; namespace UnitConversion { public partial class Form1 : Form { // 默认选项 private string unitItem = "进制"; // 用户选择单位度量 的 转换基数 private double customConversionBase = 0; public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { unitComboBox.Items.Add("进制"); unitComboBox.Items.Add("长度"); unitComboBox.Items.Add("面积"); unitComboBox.Items.Add("体积"); } /* * 进制转换 */ private void BaseConversion(TextBox text, string val) { if (text == textBox1 && Regex.IsMatch(val, @"[0-1]+$")) //二进制转换 { long oct = Convert.ToInt64(val, 2); textBox2.Text = Convert.ToString(oct, 8); textBox3.Text = oct.ToString(); textBox4.Text = Convert.ToString(oct, 16); } else if (text == textBox2 && Regex.IsMatch(val, @"[0-7]+$")) //八进制转换 { 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]+$")) //十进制转换 { long oct = Convert.ToInt64(val); textBox1.Text = Convert.ToString(oct, 2); textBox2.Text = Convert.ToString(oct, 8); textBox4.Text = Convert.ToString(oct, 16); } else if (text == textBox4 && Regex.IsMatch(val, @"[A-Fa-f0-9]+$")) //十六机制转换 { long oct = Convert.ToInt64(val, 16); textBox1.Text = Convert.ToString(oct, 2); textBox2.Text = Convert.ToString(oct, 8); textBox3.Text = oct.ToString(); } } /* * 长度 */ 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(); } } /* * 面积 */ 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); } } /* * 体积 */ 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); } } /* * 输入换算 */ private void textBox_TextChanged(object sender, EventArgs e) { try { TextBox text = (TextBox) sender; string val = text.Text; // 不为空 及 正整数或正小数 (进制另外进一步匹配) if (text.Text == "") { return; } if (unitItem == "进制") { BaseConversion(text, val); } else if (Regex.IsMatch(val, @"(^[0-9]{1,}$)|(^[0-9]+(.[0-9]{1,})$)")) { switch (unitItem) { case "长度": lengthConversion(text, val); break; case "面积": areaConversion(text, val); break; case "体积": volumeConversion(text, val); break; } } } catch (Exception exception) {} } /* * 单位类型选择 */ private void unitComboBox_SelectedIndexChanged(object sender, EventArgs e) { // 清空 及 复位 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 "进制": label1.Text = "Bin"; label2.Text = "Oct"; label3.Text = "Dec"; label4.Text = "Hex"; break; case "长度": 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 "面积": 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 "体积": 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; } } /* * 单位度量选择 */ 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; } } } } }
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