Bind CheckBoxList and Set Selected Items using C# and VB.Net

I fill my CheckBoxList with no problems! It turns out that I need to fill in the checked values that come from another table in array format (1|24|), how can I fill in with another datatable?

//LISTBOX
DataTable dTEmpCBox = ob_empresas.Retorna_dt_Servicos(1, 0);
CheckBoxList_Servicos.DataSource = dTEmpCBox;
CheckBoxList_Servicos.DataTextField = "serv_nome";
CheckBoxList_Servicos.DataValueField = "serv_id";
CheckBoxList_Servicos.DataBind();

Datatable with values in array

DataTable dtEmp = ob_empresas.Retorna_dt_Empresas_id(x_id, true, false);

how to make?