C#实现四则混合计算器，附代码

C:\Documents and Settings\Administrator\Local Settings\Application Data\Temporary Projects\计算器测试\bin\Debug\计算器测试.exe C:\Documents and Settings\Administrator\Local Settings\Application Data\Temporary Projects\计算器测试\bin\Debug\计算器测试.pdb C:\Documents and Settings\Administrator\Local Settings\Application Data\Temporary Projects\计算器测试\obj\x86\Debug\ResolveAssemblyReference.cache C:\Documents and Settings\Administrator\Local Settings\Application Data\Temporary Projects\计算器测试\obj\x86\Debug\计算器测试.Form1.resources C:\Documents and Settings\Administrator\Local Settings\Application Data\Temporary Projects\计算器测试\obj\x86\Debug\计算器测试.Properties.Resources.resources C:\Documents and Settings\Administrator\Local Settings\Application Data\Temporary Projects\计算器测试\obj\x86\Debug\GenerateResource.read.1.tlog C:\Documents and Settings\Administrator\Local Settings\Application Data\Temporary Projects\计算器测试\obj\x86\Debug\GenerateResource.write.1.tlog C:\Documents and Settings\Administrator\Local Settings\Application Data\Temporary Projects\计算器测试\obj\x86\Debug\计算器测试.exe C:\Documents and Settings\Administrator\Local Settings\Application Data\Temporary Projects\计算器测试\obj\x86\Debug\计算器测试.pdb