Отображение двух связаных таблиц в DataGridView

    DataSet dsTask = new DataSet("DataSetTask");
        OleDbCommandBuilder taskBuild;
        OleDbCommandBuilder prodBuild;
        OleDbDataAdapter taskAdapt;
        OleDbDataAdapter prodAdapt;
        OleDbConnection oleCon = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:\\dbTasks.mdb");
        private void Form1_Load(object sender, EventArgs e)
        {
                taskAdapt = new OleDbDataAdapter("SELECT * FROM Tasks",oleCon);
                prodAdapt = new OleDbDataAdapter("SELECT * FROM Products",oleCon);
             taskBuild = new OleDbCommandBuilder(taskAdapt);
            prodBuild = new OleDbCommandBuilder(prodAdapt);
            taskAdapt.Fill(dsTask,"Tasks");
            prodAdapt.Fill(dsTask,"Products");
            BuildRelationship();
            dtGridProducts.DataSource = dsTask.Tables["Products"];
            dtGridTasks.DataSource = dsTask;
            dtGridTasks.DataMember = "Products.ProductsTask";
        }
        private void BuildRelationship()
        {
            DataRelation dr = new DataRelation("ProductsTask",dsTask.Tables["Products"].Columns["IDProduct"],
                dsTask.Tables["Tasks"].Columns["IDProduct"]);
             dsTask.Relations.Add(dr);
        }

            dtGridProducts.DataSource = dsTask;
            dtGridProducts.DataMember = "Products";
            dtGridTasks.DataSource = dsTask;
            dtGridTasks.DataMember = "Products.ProductsTask";