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本篇文章给大家分享的是有关VB.NET中怎么操作dbf文件,小编觉得挺实用的,因此分享给大家学习,希望大家阅读完这篇文章后可以有所收获,话不多说,跟着小编一起来看看吧。
VB.NET操作dbf文件代码示例:
Imports System.
Data.OleDb
Imports Lion.IO.
SharpZIP.Zip
Imports Lion.IO.
SharpZIP.Checksums
Imports System.IO
Module Module1
Sub Main()
'Try
Dim cn1 As New OleDbConnection( _
"Provider=VFPOLEDB.1;Data
Source=C:\Temp\;")cn1.Open()
'-- Make some VFP data to
play withDim cmd1 As New OleDbCommand
( _"Create Table TestDBF (Field1
I, Field2 C(10))", cn1)Dim cmd2 As New OleDbCommand( _
"Insert Into TestDBF Values
(1, '行贿)", cn1)Dim cmd3 As New OleDbCommand( _
"Insert Into TestDBF Values
(2, '受贿')", cn1)cmd1.ExecuteNonQuery()
cmd2.ExecuteNonQuery()
cmd3.ExecuteNonQuery()
cn1.Close()
Dim cn2 As New OleDbConnection( _
"Provider=VFPOLEDB.1;Data Source=C:\Temp\;")
cn2.Open()
Dim cmd4 As New OleDbCommand( _
"Select * From TestDBF", cn2)
Dim da1 As New OleDbDataAdapter(cmd4)
Dim ds1 As New DataSet
Dim dr1 As DataRow
da1.Fill(ds1)
For Each dr1 In ds1.Tables(0).Rows
Console.WriteLine(dr1.Item(1).ToString())
Next
cn2.Close()
Dim crc As New Crc32
Dim s As New ZipOutputStream(System.
IO.File.Create("c:\temp\dbf.zip"))s.SetLevel(6)
Dim fs As FileFileStream = File.Open
Read("c:\temp\testdbf.dbf")Dim b(fs.Length - 1) As Byte'c#中的
语句为byte[] b = byte[fs.Length ];要注意这点fs.Read(b, 0, b.Length)
Dim entry As ZipEntry = New ZipEntry
("c:\temp\testdbf.dbf")entry.DateTime = DateTime.Now
entry.Size = fs.Length
fs.Close()
crc.Reset()
crc.Update(b)
entry.Crc = crc.Value
s.PutNextEntry(entry)
s.Write(b, 0, b.Length)
s.Finish()
s.Close()
Console.ReadLine()
'Catch e As Exception
'MsgBox(e.ToString())
'End Try
End Sub
End Module
以上就是VB.NET中怎么操作dbf文件,小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注亿速云行业资讯频道。
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