Excl与界面的操作
................\excel2
................\......\bin
................\......\...\Debug
................\......\...\.....\excel2.exe
................\......\...\.....\Interop.Excel.dll
................\......\...\.....\test.xls
................\......\excel2.csproj
................\......\Form1.cs
................\......\Form1.Designer.cs
................\......\Form1.resx
................\......\Program.cs
................\......\Properties
................\......\..........\AssemblyInfo.cs
................\......\..........\Resources.Designer.cs
................\......\..........\Resources.resx
................\......\..........\Settings.Designer.cs
................\......\..........\Settings.settings
................\excel2.sln
................\sql导入excl数据（脚本）.sql