数据库数据批量导出Excel方法[共三种方法]

F:\Project\WindowsFormsApplication3\WindowsFormsApplication3\bin\Debug\WindowsFormsApplication3.exe F:\Project\WindowsFormsApplication3\WindowsFormsApplication3\bin\Debug\WindowsFormsApplication3.pdb F:\Project\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\ResolveAssemblyReference.cache F:\Project\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.Form1.resources F:\Project\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.Properties.Resources.resources F:\Project\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.csproj.GenerateResource.Cache F:\Project\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.exe F:\Project\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.pdb D:\rocket\WindowsFormsApplication3\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.exe D:\rocket\WindowsFormsApplication3\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.pdb D:\rocket\WindowsFormsApplication3\WindowsFormsApplication3\WindowsFormsApplication3\bin\Debug\WindowsFormsApplication3.exe D:\rocket\WindowsFormsApplication3\WindowsFormsApplication3\WindowsFormsApplication3\bin\Debug\WindowsFormsApplication3.pdb D:\rocket\WindowsFormsApplication3\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\ResolveAssemblyReference.cache D:\rocket\WindowsFormsApplication3\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.Form1.resources D:\rocket\WindowsFormsApplication3\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.Properties.Resources.resources D:\rocket\WindowsFormsApplication3\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.csproj.GenerateResource.Cache D:\rocket\使用Io类导入内容到excel\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.exe D:\rocket\使用Io类导入内容到excel\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.pdb D:\rocket\使用Io类导入内容到excel\WindowsFormsApplication3\WindowsFormsApplication3\bin\Debug\WindowsFormsApplication3.exe D:\rocket\使用Io类导入内容到excel\WindowsFormsApplication3\WindowsFormsApplication3\bin\Debug\WindowsFormsApplication3.pdb D:\rocket\使用Io类导入内容到excel\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\ResolveAssemblyReference.cache D:\rocket\使用Io类导入内容到excel\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.Form1.resources D:\rocket\使用Io类导入内容到excel\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.Properties.Resources.resources D:\rocket\使用Io类导入内容到excel\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.csproj.GenerateResource.Cache D:\Rocket_Projects\使用Io类导入内容到excel\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.exe D:\Rocket_Projects\使用Io类导入内容到excel\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.pdb C:\Documents and Settings\Administrator\桌面\使用Io类导入内容到excel\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.exe C:\Documents and Settings\Administrator\桌面\使用Io类导入内容到excel\WindowsFormsApplication3\WindowsFormsApplication3\obj\Debug\WindowsFormsApplication3.pdb