作者：海雅(http://blog.csdn.net/hiyavip)
方法一：
string sql="SELECT * FROM NewsClass ORDER BY ORDERID DESC";
OleDbConnection conn=new OleDbConnection();
conn.ConnectionString=ConnectionString;
conn.Open();
OleDbCommand cmd = new OleDbCommand(Sql,Conn);
OleDbDataReader dr= cmd.ExecuteReader();
//将数据添加到 DropDownList
while(dr.Read())
{
this.ddlClass.Items.Add(new ListItem(dr["ClassName"].ToString(),dr["ClassId"].ToString()));
}
dr.Close();
cmd.Dispose();
conn.Close;
conn.Dispose();
方法二：
string sql="SELECT * FROM NewsClass ORDER BY ORDERID DESC";
OleDbConnection conn=new OleDbConnection();
conn.ConnectionString=ConnectionString;
conn.Open();
DataSet ds=new DataSet();
OleDbDataAdapter da=new OleDbDataAdapter(sql,conn);
da.Fill(ds,"ClassTable");
//将数据添加到 DropDownList
this.ddlClass.DataSource=ds;
this.ddlClass.DataTextField = "ClassName";
this.ddlClass.DataValueField = "ClassID";
this.ddlClass.DataBind();
ds.Dispose();
conn.Close;
conn.Dispose();
