I have a windows application. When I select the option one from a combo-box, I bind an UltraGrid control to a DataSet with to DataTables (Maestro and Detalle) and a Relation between them:

    ds_MaestroDetalle.Relations.Add(
                    "Maestro_Detalle",
                    ds_MaestroDetalle.Tables["Maestro"].Columns["ID"],
                    ds_MaestroDetalle.Tables["Detalle"].Columns["ID"]);

Since I want to Export to Excel the info in the two DataTables and the relationship, I use SetDataBindings:

    this.ug_Reportes.SetDataBinding(ds_MaestroDetalle, "Maestro");

Then, when I select the option two from the combo-box, I bind the same
Ultragrid to a DataTable.

    dt_MyTable.TableName = "Maestro";
    this.ug_Reportes.DataSource = dt_MyTable;

I get the following message when binding to the second option:  "Child list for field Maestro cannot be created."

I guess, when binding to the DataTable in the second option, UltraGrid is currently looking for Table Maestro in the DataSet (first option).

I try to UltraGrid.DataBindings.Clear(), UltraGrid.DataSource = null, but I don't know how to reset UltraGrid to start binding again without problems.


Thanks in advanced!