Add new row and get duplicated ?

I have some code which first i create datarow object of same dataset type.
Tahn i fill some data in this row. And than add row to dataset and then
update and accep changes. Ockey. There is a problem when i first click
button which do code above. I get new row, ockey no problem, when i click
second time it is also ockey. i edit some data in grid and the click again
add buton whic do code above. Now I get third row but the second row is now
automaticly overwriten, now have the same values like third. What cooud be
problem. I Use Visual studio 2003, Windows Form,

dsBatch.AttributeRow dro = dsBatch1.Attribute.NewAttributeRow();

dro.IDAttributeValueType=1;
dro.Name="test";
dsBatch1.Attribute.Rows.Add(dro);

Attribute.Update(dsBatch1.Attribute);
dsBatch1.Attribute.AcceptChanges();



and ther is completly code



private void bitmapButton2_Click_1(object sender, System.EventArgs e)

{

gridControl1.BindingContext[dsBatch1.Attribute].EndCurrentEdit();

dsBatch.AttributeRow dro = dsBatch1.Attribute.NewAttributeRow();



if (tl.FocusedNode.Level==0)

{

dro.IDProcessCellType=Convert.ToInt32(tl.FocusedNode.Tag);

if (rbIn.Checked==true) dro.AttributeType=700;

else dro.AttributeType=800;

}


if (tl.FocusedNode.Level==1)

{

dro.IDProcessUnitType=Convert.ToInt32(tl.FocusedNode.Tag);

if (rbIn.Checked==true) dro.AttributeType=200;

else dro.AttributeType=300;

}

if (tl.FocusedNode.Level==3)

{

dro.IDEquipmentModuleType=Convert.ToInt32(tl.FocusedNode.Tag);

if (rbIn.Checked==true) dro.AttributeType=500;

else dro.AttributeType=600;

}

dro.IDAttributeValueType=4;

dro.IDEngineeringUnit=8;

dro.Order=dbFunction.MaxID("Attribute","order");

dsBatch1.Attribute.Rows.Add(dro);

DM.qAttribute.Update(dsBatch1.Attribute);

dsBatch1.Attribute.AcceptChanges();

gridView1.FocusedRowHandle=gridView1.RowCount-1;

}