C# 如何从.NET应用程序更新.dbf文件
我想从.net应用程序更新.dbf文件。 我能够将.dbf文件读入网格,但无法从.net应用程序更新.dbf文件 我使用了以下代码来读取.dbf文件。读书没问题。但是,无法更新.dbf文件C# 如何从.NET应用程序更新.dbf文件,c#,.net,asp.net,dbf,C#,.net,Asp.net,Dbf,我想从.net应用程序更新.dbf文件。 我能够将.dbf文件读入网格,但无法从.net应用程序更新.dbf文件 我使用了以下代码来读取.dbf文件。读书没问题。但是,无法更新.dbf文件 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windo
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data.OleDb;
using System.Data.Odbc;
namespace DBFwin
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void ConnectToDBF()
{
System.Data.Odbc.OdbcConnection oConn = new System.Data.Odbc.OdbcConnection();
oConn.ConnectionString = @"Driver={Microsoft dBase Driver (*.dbf)};SourceType=DBF;SourceDB=D:\databases\;Exclusive=No; Collate=Machine;NULL=NO;DELETED=NO;BACKGROUNDFETCH=NO;";
oConn.Open();
System.Data.Odbc.OdbcCommand oCmd = oConn.CreateCommand();
//Test.DBF is the dbf file which is located at C:\rd\Setup folder.
oCmd.CommandText = @"SELECT * FROM C:\rd\Setup\Test.DBF";
DataTable dt = new DataTable();
dt.Load(oCmd.ExecuteReader());
//Adding a row..
//DataRow dtRow = dt.LoadDataRow();
DataRow dtRow = dt.NewRow();
//FIELD1 and FIELD2 are two columns of dbf file.
dtRow["FIELD1"] = 999;
dtRow["FIELD2"] = "RA-12";
dt.BeginLoadData();
dt.Rows.Add(dtRow);
dt.EndLoadData();
//Above code adding a row in the grid, which is fine.
//How can i update dbf file from this source code???
oConn.Close();
dataGridView1.DataSource = dt;
}
private void btnClick_Click(object sender, EventArgs e)
{
ConnectToDBF();
}
}
}
注意:我还看到,第三方组件Apollo组件可用于从.NET应用程序读取、添加和编辑.dbf文件的记录。此组件由VistaSoftware.com开发。这不是免费软件。能否请您确认,要更新.dbf文件,我是否必须使用此第三方组件,或者我可以通过.net应用程序执行此操作 我会这样做:
private void ConnectToDBF()
{
System.Data.Odbc.OdbcConnection oConn = new System.Data.Odbc.OdbcConnection();
oConn.ConnectionString = @"Driver={Microsoft dBase Driver (*.dbf)};SourceType=DBF;SourceDB=D:\databases\;Exclusive=No; Collate=Machine;NULL=NO;DELETED=NO;BACKGROUNDFETCH=NO;";
oConn.Open();
System.Data.Odbc.OdbcCommand oCmd = oConn.CreateCommand();
// Insert the row
oCmd.CommandText = @"INSERT INTO C:\rd\Setup\Test.DBF VALUES(999, 'RA-12')";
oCmd.ExecuteNonQuery();
// Read the table
oCmd.CommandText = @"SELECT * FROM C:\rd\Setup\Test.DBF";
DataTable dt = new DataTable();
dt.Load(oCmd.ExecuteReader());
oConn.Close();
dataGridView1.DataSource = dt;
}
我会这样做:
private void ConnectToDBF()
{
System.Data.Odbc.OdbcConnection oConn = new System.Data.Odbc.OdbcConnection();
oConn.ConnectionString = @"Driver={Microsoft dBase Driver (*.dbf)};SourceType=DBF;SourceDB=D:\databases\;Exclusive=No; Collate=Machine;NULL=NO;DELETED=NO;BACKGROUNDFETCH=NO;";
oConn.Open();
System.Data.Odbc.OdbcCommand oCmd = oConn.CreateCommand();
// Insert the row
oCmd.CommandText = @"INSERT INTO C:\rd\Setup\Test.DBF VALUES(999, 'RA-12')";
oCmd.ExecuteNonQuery();
// Read the table
oCmd.CommandText = @"SELECT * FROM C:\rd\Setup\Test.DBF";
DataTable dt = new DataTable();
dt.Load(oCmd.ExecuteReader());
oConn.Close();
dataGridView1.DataSource = dt;
}
您没有包含任何代码…如果问题已解决,请接受回答者。您没有包含任何代码…如果问题已解决,请接受回答者。