c#计算器混合运算（加减乘除括号）

F:\完成的\华南建材\WindowsFormsTest\WindowsFormsTest\bin\Debug\WindowsFormsTest.exe F:\完成的\华南建材\WindowsFormsTest\WindowsFormsTest\bin\Debug\WindowsFormsTest.pdb F:\完成的\华南建材\WindowsFormsTest\WindowsFormsTest\obj\x86\Debug\WindowsFormsTest.Form1.resources F:\完成的\华南建材\WindowsFormsTest\WindowsFormsTest\obj\x86\Debug\WindowsFormsTest.Properties.Resources.resources F:\完成的\华南建材\WindowsFormsTest\WindowsFormsTest\obj\x86\Debug\WindowsFormsTest.csproj.GenerateResource.Cache F:\完成的\华南建材\WindowsFormsTest\WindowsFormsTest\obj\x86\Debug\WindowsFormsTest.exe F:\完成的\华南建材\WindowsFormsTest\WindowsFormsTest\obj\x86\Debug\WindowsFormsTest.pdb F:\完成的\华南建材\c#jsq\WindowsFormsTest\obj\x86\Debug\WindowsFormsTest.exe F:\完成的\华南建材\c#jsq\WindowsFormsTest\obj\x86\Debug\WindowsFormsTest.pdb F:\完成的\华南建材\c#jsq\WindowsFormsTest\bin\Debug\WindowsFormsTest.exe F:\完成的\华南建材\c#jsq\WindowsFormsTest\bin\Debug\WindowsFormsTest.pdb F:\完成的\华南建材\c#jsq\WindowsFormsTest\obj\x86\Debug\WindowsFormsTest.Form1.resources F:\完成的\华南建材\c#jsq\WindowsFormsTest\obj\x86\Debug\WindowsFormsTest.Properties.Resources.resources F:\完成的\华南建材\c#jsq\WindowsFormsTest\obj\x86\Debug\WindowsFormsTest.csproj.GenerateResource.Cache F:\完成的\华南建材\c#jsq\WindowsFormsTest\obj\x86\Debug\WindowsFormsTest.csprojResolveAssemblyReference.cache