try { MdbDAL dal = new MdbDAL(); DataTable dt = (DataTa...
OleDbDataAdapter 充当 DataSet 和数据源之间的桥梁，用于检索和保存数据。...名称 说明 OleDbDataAdapter () 初始化 OleDbDataAdapter 类的新实例。...OleDbDataAdapter (OleDbCommand) 初始化 OleDbDataAdapter 类的新实例，用指定的 OleDbCommand 作为SelectCommand...OleDbDataAdapter (String, OleDbConnection) 用 SelectCommand 初始化 OleDbDataAdapter 类的新实例。...OleDbDataAdapter (String, String) 用 SelectCommand 初始化 OleDbDataAdapter 类的新实例。
machine;"; using (OleDbConnection myConnection = new OleDbConnection(strConn)) { OleDbDataAdapter... adpt = new OleDbDataAdapter("select * from SJSHQ.DBF", myConnection); DataSet mySet = new DataSet... adpt = new OleDbDataAdapter("select s1 from show2003.dbf", myConnection); DataSet mySet = new... adpt0 = new OleDbDataAdapter("SELECT s1,s2,s3,s4,s5,str(s6) as s6,s11,s13,s15,s17 from show2003 where... adpt = new OleDbDataAdapter("SELECT * from show2003 where s1\"000000\"", myConnection); DataSet
command1.CommandText = "select * from 成绩单"; connection1.Open();//打开连接 OleDbDataAdapter...myDataAdapter1 = new OleDbDataAdapter(command1); myDataAdapter1.SelectCommand = command1...CommandText = "UPDATE 成绩单 SET ASP=" + finalMarks + " WHERE 学号=" + Application["user"]; OleDbDataAdapter...myDataAdapter2 = new OleDbDataAdapter(); myDataAdapter2.UpdateCommand = command1;
Imports System.Data.OleDb Public Class Form1 Dim cn As OleDbConnection Dim da As OleDbDataAdapter...cn = New OleDbConnection(cnStr) Dim sql As String = "select * from grade" da = New OleDbDataAdapter...Imports System.Data.OleDb Public Class Form1 Dim cn As OleDbConnection Dim da As OleDbDataAdapter...cn = New OleDbConnection(cnStr) Dim sql As String = TextBox1.Text da = New OleDbDataAdapter...sql As String = "select * from grade where 姓名 like " & "'%" & TextBox2.Text & "%'" da = New OleDbDataAdapter
conn = new OleDbConnection(strConn); conn.Open(); DataSet ds = new DataSet(); OleDbDataAdapter...odda = new OleDbDataAdapter("select * from [Sheet1$]", conn); odda.Fill(ds, table);
"; OleDbConnection conn = new OleDbConnection(strConn); conn.Open(); string strExcel = ""; OleDbDataAdapter...myCommand = null; DataSet ds = null; strExcel="select * from [sheet1$]"; myCommand = new OleDbDataAdapter...myConn = new OleDbConnection(strCon) ; string strCom="select * from [Sheet1$]"; myConn.Open ( ) ; OleDbDataAdapter...myCommand = new OleDbDataAdapter ( strCom, myConn ) ; ystem.Data.OleDb.OleDbCommandBuilder builder=...oda = new OleDbDataAdapter(sql, con); oda.Fill(ds, "PO014"); DataTable dt = ds.Tables[0];
DataSet(); //OleDbCommand oleCommand = new OleDbCommand(query, oleDbConnection); //OleDbDataAdapter... oleAdapter = new OleDbDataAdapter(oleCommand); OleDbDataAdapter oleAdapter = new OleDbDataAdapter
using (OleDbConnection conn = new OleDbConnection(connString)) using (OleDbDataAdapter...cmd = new OleDbDataAdapter(sql_select, conn)) { conn.Open();
cnn.Open(); OleDbCommand cmd = new OleDbCommand(queryString, cnn); OleDbDataAdapter...adp = new OleDbDataAdapter(cmd); System.Data.DataSet ds = new System.Data.DataSet();...adp.Fill(ds); return ds.Tables[0]; } } 以上发起查询后，数据结构由OleDbDataAdapter
da = new OleDbDataAdapter(comm); da.Fill(ds); } catch (Exception...da = new OleDbDataAdapter(comm); DataSet Ds = new DataSet(); da.Fill...="OleDbParameters">OleDbParameter可选参数 /// public static OleDbDataAdapter...string CommandText, params System.Data.OleDb.OleDbParameter[] OleDbParameters) { OleDbDataAdapter...OleDbCommand comm = CreateCommand(CommandText, Connection, OleDbParameters); Da = new OleDbDataAdapter
OleCommand cm=new OleDbCommand("select * from petro_well",cn); cn.Open(); //dataset操作 OleDbDataAdapter...ad =new OleDbDataAdapter ("select * from petro_well",cn); DataSet ds=new DataSet(); ad.Fill
创建OleDbDataAdapter和DataSet，用于接收查询结果。执行查询并填充DataSet，之后可以通过DataTable对象来操作数据。...adapter = new OleDbDataAdapter(cmd); DataSet ds = new DataSet(); adapter.Fill(ds); DataTable.../ 执行插入命令 cmd.ExecuteNonQuery(); // 关闭连接 conn.Close();}如果需要向Excel文件批量写入数据，可以构建多个INSERT语句，或使用OleDbDataAdapter...adapter = new OleDbDataAdapter(); adapter.InsertCommand = new OleDbCommand("INSERT INTO [Sheet1$]...四、OleDb操作数据库使用OLE DB进行数据库访问（包括增加、删除、修改和查询操作）涉及到几个关键的.NET类，主要是OleDbConnection、OleDbCommand、OleDbDataAdapter
= CurrentPage*PageSize; string strSel = "select * from Score"; DataSet ds = new DataSet(); OleDbDataAdapter...MyAdapter = new OleDbDataAdapter(strSel,MyConn); MyAdapter.Fill(ds,StartIndex,PageSize,"Score");.../aspxWeb.mdb")); OleDbDataAdapter objCommand=new OleDbDataAdapter("select * from Document",objConn)
{ InitializeComponent(); } OleDbConnection connection; OleDbDataAdapter...OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Info.mdb;"); command = new OleDbDataAdapter
myDataTables[0]); OleDbCommand cmd1 = new OleDbCommand(Constants.cmdText1, conn); OleDbDataAdapter...oleAdapter1 = new OleDbDataAdapter(cmd1); oleAdapter1.Fill(myDataSet.Tables[0]);...myDataTables[1]); OleDbCommand cmd2 = new OleDbCommand(Constants.cmdText2, conn); OleDbDataAdapter...oleAdapter2 = new OleDbDataAdapter(cmd2); oleAdapter2.Fill(myDataSet.Tables[1]);...oleAdapter3 = new OleDbDataAdapter(cmd3); oleAdapter3.Fill(myDataSet.Tables[2]);
OleDbDataAdapter控件可以帮助你完成以上任务。 1. 如果工具箱没有显示出来，在View菜单中，选择工具箱。 2. 点击数据标签，显示可用的数据控件。 3....双击OleDbDataAdapter控件，将其添加到你的窗体中。 OleDbDataAdapter控件已经被添加到了你的窗体中，位于窗体区域下面的区域内。 这时数据适配器配置向导出现了。 4....点击F4打开OleDbDataAdapter控件的属性窗口。 14. 在属性窗口中，将控件的名称改为dbAdapt。...在窗体中选择dbAdapt OleDBDataAdapter控件。 2. 如果控件的属性窗口还没有出现，点击F4打开。 3. 在属性窗口的底部，点击生成数据集。 4. 出现生成数据集对话框。 5....dbAdapt.Fill(ds); Dim ds As DataSet ds = dbDataSet dbAdapt.Fill(ds) 程序使用你指定的数据库中的数据填充数据集，具体使用的数据字段是你在设置OleDbDataAdapter
{ 84 string sqlStr = "select * from [" + sheetName + region + "]"; 85 OleDbDataAdapter...ExcelDA = new OleDbDataAdapter(sqlStr, connStr); 86 DataSet ds = new DataSet(); 87...103 { 104 string sqlStr = "select * from [" + sheetName + "]"; 105 OleDbDataAdapter...ExcelDA = new OleDbDataAdapter(sqlStr, connStr); 106 DataSet ds = new DataSet(); 107...ExcelDA = new OleDbDataAdapter(sql, connStr); 133 ExcelDA.Fill(ds, sheets[i].ToString
2.OleDbDataAdapter类 OleDbDataAdapter类可以在所有OLE DB数据源中读写数据，并且可以设置为包含要执行的SQL语句或者存储过程名。...在表单中增加一个OleDbDataAdapter控件。这时会自动弹出“数据适配器配置向导”对话框。...的OleDbDataAdapter对象。...得到一个数据集 Dim myCommand As OleDbDataAdapter = New OleDbDataAdapter(strCom, myConn) ‘把Dataset绑定student...得到一个数据集 Dim myCommand As OleDbDataAdapter = New OleDbDataAdapter(strCom, myConn) ‘把Dataset绑定student
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