By using UltraControlContainerEditor i added my usercontrol (usercontrol has two radio buttons (Yes and No)) and paste it into the grid's particular cell. My code goes like this,

 public void Initialize(LibertyGridProperties gridProperties, LibertyGridColumn[] columnDetails)
        {

   case GridColumnStyle.UserControl:

                               
                                if (colData.UserControlProperties.Component == "CodeVsDesc")
                                {
                             colGridFormat[ultraGrid1.DisplayLayout.Bands[0].Columns[colData.UserControlProperties.ColumnName].Key] = GRID_EDIT_FORMAT.GRID_EDIT_OPTION;
                                    isEditable = true;
                                }
                                break;

        }

void ultraGrid1_InitializeRow(object sender, InitializeRowEventArgs e)
        {

 case GRID_EDIT_FORMAT.GRID_EDIT_OPTION:

                Infragistics.Win.UltraWinEditors.UltraControlContainerEditor optionButtonsContainer;
                CodeVsDescription optionButtonsEditor;
                CodeVsDescription optionButtonsRender;

                            optionButtonsContainer = new Infragistics.Win.UltraWinEditors.UltraControlContainerEditor();
                            optionButtonsEditor = new CodeVsDescription();
                            optionButtonsRender = new CodeVsDescription();

                            optionButtonsEditor.Size = new System.Drawing.Size(139, 39);
                            optionButtonsEditor.Visible = false;
                            optionButtonsEditor.AutoSize = true;

                            optionButtonsRender.Size = new System.Drawing.Size(49, 39);
                            optionButtonsRender.Visible = false;
                            optionButtonsRender.AutoSize = true;

                            optionButtonsContainer.EditingControl = optionButtonsEditor;
                            optionButtonsContainer.RenderingControl = optionButtonsRender;

                            e.Row.Cells[key].EditorComponent = optionButtonsContainer;
                            e.Row.Cells[key].Activation = Activation.AllowEdit;
                            break;

}

Whenever i add rows dynamically into the grid , I can see the usercontrol into the particular column of the added rows. But I can select only one radio button at a time. For example, If i have 3 rows, I select Yes radio button in the first row and try to select No button in the second row of the user control. Once i select No on the 2nd row, first rows Yes selection becomes invalid and unselected automatically. I need to figure out the cause of this issue.

If i select any radio button , i should able to say to grid about the button and row that has been selected. Which event i should choose in this case. I feel personally that grid cell only knows about the container that it holds as it implements IProvidesEmbeddableEditor and dont know what control (my usercontrol with radio button)container holds. Because i have  this.ultraGrid1.BeforeEnterEditMode += new CancelEventHandler(ultraGrid1_BeforeEnterEditMode); event and it fires when i click on the container not while clicking on any of theradio button. Please advise me.