comboBox控件怎么绑定到Access数据库 让数据显示在comboBox控件里

还有在调用“Fill”前，SelectCommand 属性尚未初始化。怎么改


下面那是我写的代码
y
{
string strCon = @" Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source = .\\tongxunlu.mdb " ;
OleDbConnection myConn = new OleDbConnection ( strCon ) ;
myConn.Open ( ) ;
string strDele = "DELETE FROM myfriend WHERE xingming= '" + txtName.Text+"'" ;
OleDbCommand myCommand = new OleDbCommand ( strDele , myConn ) ;
//从数据库中删除指定记录
myCommand.ExecuteNonQuery ( ) ;
//从DataSet中删除指定记录信息
OleDbDataAdapter dt=new OleDbDataAdapter();

DataSet myDataSet =new DataSet();
dt.Fill(myDataSet,"myfriend");

myDataSet.Tables["myfriend"].Rows [ myBind.Position ].Delete ( ) ;
myDataSet.Tables["myfriend"].AcceptChanges ( ) ;
MessageBox.Show("删除成功");

myConn.Close ( ) ;
}
catch(OleDbException ex)
{
MessageBox.Show(ex.ToString());
}

catch(NullReferenceException exx)
{
MessageBox.Show(exx.ToString());
}
}

绑写在dataset中

("Text",ds,"xxx.xx");

懂了 谢了

语句怎么都是删除语句呀??

objSqlConn.Open();
DataSet objDataSet3=new DataSet();
objDataAdapter=new OleDbDataAdapter("select * from Wenhua",objSqlConn);
objDataAdapter.Fill(objDataSet3,"Wenhua");
foreach(DataRow objRow in objDataSet3.Tables["Wenhua"].Rows)
{
this.cboWenHua.Items.Add(objRow["文化程度"]);
}
objSqlConn.Close();

也可以用DataReader读取数据，然后再填充

oledbcommand dc=("select fild from table",conn);
oledbdatareader r=dc.Executereader();
while(r.read())
{
coxbox.item.add(r["fild"].tostring());
}