DataSet.Relations.Add("关联名称", 父关联主键字段, 子关联外来键字段)
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    DataSet ds = new DataSet(); //建立数据集对象.
    OleDbDataAdapter da = new OleDbDataAdapter();
    da = Data.Select("select * from dtext", "dtext");//将数据放入数据集..
    da.Fill(ds, "dtext");
    da = Data.Select("select * from a", "dtext1");//将数据放入数据集..
    da.Fill(ds, "dtext1");
    ds.Relations.Add("admin",ds.Tables["dtext"].Columns["Dname"],ds.Tables["dtext1"].Columns["Dname"]);
    Repeater1.DataSource = ds.Tables["dtext"].DefaultView; //进行设定..
    Repeater1.DataBind();//执行...