C#.NET帮忙改下代码.

来源:百度知道 编辑:UC知道 时间:2024/06/18 02:35:42
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.OleDb;

namespace WindowsFormsApplication11
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

//封装
public static OleDbDataReader Sql(string app)
{
OleDbConnection Cnn = new OleDbConnection(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Documents and Settings\MoBin\桌面\1.accdb");
Cnn.Open();
OleDbCommand cmd = new OleDbCommand(app, Cnn);
OleDbDataReader Dr = cmd.ExecuteReader();
return Dr;
}
//调用
private void button1_Click(object send

DataReader reader=this.Sql(s);
while(reader.Read())
{
listBox1.items.Add(dr["字段名"].ToString());
}

while (//这里因该怎么写)
{
listBox1.Items.Add(这里因该怎么写);
}
}
}
}
变成
DataReader dr=Form1.OleDbDataReader(s);
while(dr.Read())
{
listBox1.items.Add(dr["数据域名"].ToString());
}