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;
}
}
}
}
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
