判断两个ip号是否在同一网段

用c#实现的判断两个ip地址是否属于同一网段，用于网络传输判断

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-09-21 17:00  网络判断\
     目录           0  2018-09-21 16:59  网络判断\WindowsFormsApplication1\
     目录           0  2018-09-21 16:59  网络判断\WindowsFormsApplication1\.vs\
     目录           0  2018-09-21 16:09  网络判断\WindowsFormsApplication1\.vs\判断两个ip是否在同一网段\
     目录           0  2018-09-21 16:09  网络判断\WindowsFormsApplication1\.vs\判断两个ip是否在同一网段\v14\
     文件       51200  2018-09-28 16:47  网络判断\WindowsFormsApplication1\.vs\判断两个ip是否在同一网段\v14\.suo
     目录           0  2018-09-21 17:26  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\
     文件         189  2018-09-21 16:09  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\App.config
     文件        4144  2018-09-21 16:55  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\CheckAtSameSection.csproj
     文件        4869  2018-09-21 16:31  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\Form1.Designer.cs
     文件        2063  2018-09-21 17:26  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\Form1.cs
     文件        5817  2018-09-21 16:31  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\Form1.resx
     文件         536  2018-09-21 16:09  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\Program.cs
     目录           0  2018-09-21 16:09  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\Properties\
     文件        1356  2018-09-21 16:09  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\Properties\AssemblyInfo.cs
     文件        2861  2018-09-21 16:09  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\Properties\Resources.Designer.cs
     文件        5612  2018-09-21 16:09  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\Properties\Resources.resx
     文件        1111  2018-09-21 16:09  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\Properties\Settings.Designer.cs
     文件         249  2018-09-21 16:09  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\Properties\Settings.settings
     目录           0  2018-09-21 16:09  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\bin\
     目录           0  2018-09-21 16:55  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\
     文件     4804608  2013-01-03 17:06  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\DevComponents.DotNetBar2.dll
     文件     3586687  2012-12-28 13:31  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\DevComponents.DotNetBar2.xml
     文件       10752  2018-09-21 16:58  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe
     文件         189  2018-09-21 16:09  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe.config
     文件       22016  2018-09-21 16:58  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.pdb
     文件       22696  2018-09-28 16:31  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe
     文件         189  2018-09-21 16:09  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe.config
     文件         490  2018-04-12 07:35  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.vshost.exe.manifest
     目录           0  2018-09-21 16:09  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\obj\
     目录           0  2018-09-28 16:31  网络判断\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\
............此处省略15个文件信息