C# windows窗体编写的简易计算器

该计算器在加减乘除上，没有漏洞，可以给初学者带来很大的帮助，让他理清思路！

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

    .CA....       165  2010-11-12 15:13  count\ClassLibrary1\Class1.cs

    .CA....      2314  2010-11-12 15:52  count\ClassLibrary1\ClassLibrary1.csproj

    .CA....      5667  2010-11-12 15:13  count\ClassLibrary1\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

    .CA....      1358  2010-11-12 15:13  count\ClassLibrary1\Properties\AssemblyInfo.cs

    .CA....      5632  2010-11-18 22:36  count\countclass\bin\Debug\countclass.dll

    .CA....     13824  2010-11-18 22:36  count\countclass\bin\Debug\countclass.pdb

    .CA....       223  2010-11-12 16:18  count\countclass\Class1.cs

    .CA....      3162  2010-11-18 21:41  count\countclass\countclass.csproj

    .CA....       800  2010-11-18 22:36  count\countclass\obj\Debug\countclass.csproj.FileListAbsolute.txt

    .CA....      5632  2010-11-18 22:36  count\countclass\obj\Debug\countclass.dll

    .CA....     13824  2010-11-18 22:36  count\countclass\obj\Debug\countclass.pdb

    .CA....       180  2010-11-18 22:36  count\countclass\obj\Debug\countclass.Properties.Resources.resources

    .CA....      5760  2010-11-18 22:36  count\countclass\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

    .CA....       180  2010-11-18 22:36  count\countclass\obj\Debug\GenerateResource.read.1.tlog

    .CA....       408  2010-11-18 22:36  count\countclass\obj\Debug\GenerateResource.write.1.tlog

    .CA....      4608  2010-11-18 21:13  count\countclass\obj\Debug\TempPE\Properties.Resources.Designer.cs.dll

    .CA....      4608  2010-11-18 21:13  count\countclass\obj\Debug\TempPE\Resources.Designer.cs.dll

    .CA....      1352  2010-11-12 15:54  count\countclass\Properties\AssemblyInfo.cs

    .CA....      2856  2010-11-18 21:14  count\countclass\Properties\Resources.Designer.cs

    .CA....      4420  2010-11-18 21:13  count\countclass\Properties\Resources.resx

    .CA....      1106  2010-11-18 21:11  count\countclass\Properties\Settings.Designer.cs

    .CA....       233  2010-11-18 21:11  count\countclass\Properties\Settings.settings

    .CA....     12800  2010-11-19 16:30  count\WindowsFormsApplication1\bin\Debug\countclass.exe

    .CA....     28160  2010-11-19 16:30  count\WindowsFormsApplication1\bin\Debug\countclass.pdb

    .CA....     11600  2010-11-19 16:30  count\WindowsFormsApplication1\bin\Debug\countclass.vshost.exe

    .CA....       490  2010-03-17 22:39  count\WindowsFormsApplication1\bin\Debug\countclass.vshost.exe.manifest

    .CA....       490  2010-03-17 22:39  count\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe.manifest

    .CA....      3716  2010-11-18 22:43  count\WindowsFormsApplication1\countWindowsFormsApplication1.csproj

    .CA....      2725  2010-11-19 17:02  count\WindowsFormsApplication1\Form1.cs

    .CA....     14036  2010-11-19 17:02  count\WindowsFormsApplication1\Form1.Designer.cs

............此处省略48个文件信息