在很多项目中,都会使用到文件的上传下载等,为了方便,封装了一个帮助类,每次直接拿过来使用就可以了,下面是封装的类和使用方法. using Common.AttributeHelper; using NPOI.HSSF.UserModel; using NPOI.SS.UserModel; using NPOI.SS.Util; using NPOI.XSSF.UserModel; using System; using System.Collections.Generic; using Syst
Private Sub savefile(ByVal dgv2 As DataTable) Dim app As Object = CreateObject("Excel.Application") Dim xlbook As Object = app.workbooks.add() Dim xR As Integer = dgv2.Rows.Count Dim xC As Integer = dgv2.Columns.Count Dim maxR As Integer = 20000