Maintaining two different datagridview and displaying one tables in each- reg

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C#

How to dispaly two tables in two different datagridview(with dataview for filtering) in single form. if i use two tables in single form with two datagridviews. my dataset displays current table not previous showing in datagridview1.

private void DGVMasterSearch_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            Clear();
            if (DGVMasterSearch.CurrentCell != null && DGVMasterSearch.CurrentCell.Value != null)
            {
                if (e.RowIndex > -1)
                {
                    txtPurchaseID.Text =this.DGVMasterSearch.CurrentRow.Cells["PURCHASE_ID"].Value.ToString();
                    txt_po_Oid.Text = this.DGVMasterSearch.CurrentRow.Cells["PURCHASE_ORDER_ID"].Value.ToString();
                    txtDate.Text = this.DGVMasterSearch.CurrentRow.Cells["DATE"].Value.ToString();
                    txtVendor_Invoice.Text = this.DGVMasterSearch.CurrentRow.Cells["VENDOR_INVOICE_NO"].Value.ToString();
                    cmbVendor.Text = this.DGVMasterSearch.CurrentRow.Cells["VENDOR_NAME"].Value.ToString();

                }
            }
              dgvPurchaseEntry.Columns.Clear();

            string[] str = {txtPurchaseID.Text,"SEARCH" };
            ds= ppt.P_DS("PURCHASE_DETAILS_SEARCH_DELETE",str);
            this.dgvPurchaseEntry.DataSource = ds.Tables[0];
            Totalgridvalues();
            PanelMasterSearch.Hide();

        }

I use three datagridview in single page. I wrote stored procedure to return table schema for these three datagridviews. I just want to search an item in one datagridview and second datagridview will show the details. Here what happens my dataset gives two tables for to bind in gridview.