winform计算器（实现简单的四则运算）

C:\Users\yyz\Desktop\Calculator\Calculator\obj\Debug\Calculator.exe C:\Users\yyz\Desktop\Calculator\Calculator\obj\Debug\Calculator.pdb C:\Users\yyz\Desktop\Calculator\Calculator\bin\Debug\Calculator.exe C:\Users\yyz\Desktop\Calculator\Calculator\bin\Debug\Calculator.pdb C:\Users\yyz\Desktop\Calculator\Calculator\obj\Debug\ResolveAssemblyReference.cache C:\Users\yyz\Desktop\Calculator\Calculator\obj\Debug\Calculator.Form1.resources C:\Users\yyz\Desktop\Calculator\Calculator\obj\Debug\Calculator.Properties.Resources.resources C:\Users\yyz\Desktop\Calculator\Calculator\obj\Debug\Calculator.csproj.GenerateResource.Cache C:\Users\yyz\Desktop\Calculator\Calculator\obj\Debug\Calculator.Form2.resources E:\winform\作业\Calculator\Calculator\obj\Debug\Calculator.exe E:\winform\作业\Calculator\Calculator\obj\Debug\Calculator.pdb E:\winform\作业\Calculator\Calculator\bin\Debug\Calculator.exe E:\winform\作业\Calculator\Calculator\bin\Debug\Calculator.pdb E:\winform\作业\Calculator\Calculator\obj\Debug\ResolveAssemblyReference.cache E:\winform\作业\Calculator\Calculator\obj\Debug\Calculator.Form1.resources E:\winform\作业\Calculator\Calculator\obj\Debug\Calculator.Form2.resources E:\winform\作业\Calculator\Calculator\obj\Debug\Calculator.Properties.Resources.resources E:\winform\作业\Calculator\Calculator\obj\Debug\Calculator.csproj.GenerateResource.Cache