RowNotInTableException when accessing

[Martynas marcus]

Hi, I faced a problem when trying to access row again.

I have TreeView component and in Tag property I put row from datatable:

foreach (DataRow row in catalogDataSet.category)
            {
                if (row["parent"].ToString().Equals("0"))
                {
                    TreeNode node = new TreeNode();
                    node.Text = row["name"].ToString();
                    node.Tag = row;
                    string nodeId = row["id"].ToString();
                    if (this.HasChilds(nodeId))
                    {
                        this.fillChilds(nodeId, node);
                    }
                    tree.Nodes.Add(node);
                }
 
            }

Then I try to access row`s id:

int locationId = int.Parse(((DataRow)locationTreeView.SelectedNode.Tag)["id"].ToString());

First time its ok, but after event click fires and loads product`s info into panel second time I try to load dataGridView by id from row (same code above) I get error:

RowNotInTableException:

This row has been removed from a table and does not have any data.  BeginEdit() will allow creation of new data in this row.