WinForms - How to enable Master-Detail mode (a detail grid view is displayed within a master row of the same the grid control)

Hi Satheesh,
You can add a new view controller, implementing it as follows:

C#
using System;  
using DevExpress.ExpressApp;  
using DevExpress.XtraGrid;  
using DevExpress.XtraGrid.Views.Grid;  
using DevExpress.XtraGrid.Columns;  
using DevExpress.ExpressApp.Win.Editors;  

namespace WinSolution.Module.Win {  
    public class MasterDetailViewController : ViewController<ListView> {  
        protected override void OnViewControlsCreated() {  
            base.OnViewControlsCreated();  
            GridListEditor gridListEditor = View.Editor as GridListEditor;  
            if (gridListEditor != null) {  
                GridControl grid = gridListEditor.Grid;  
                GridView view = gridListEditor.GridView;  
                view.OptionsPrint.PrintDetails = true;  
                view.OptionsDetail.ShowDetailTabs = true;  
                view.OptionsView.ShowDetailButtons = true;  
                view.OptionsDetail.EnableMasterViewMode = true;  
                view.MasterRowExpanded += view_MasterRowExpanded;  
            }  
        }  
        private void view_MasterRowExpanded(object sender, CustomMasterRowEventArgs e) {  
            GridView masterView = sender as GridView;  
            GridView detailView = masterView.GetDetailView(e.RowHandle, e.RelationIndex) as GridView;  
            detailView.BeginUpdate();  
            detailView.OptionsDetail.EnableMasterViewMode = false;  
            detailView.OptionsBehavior.Editable = false;  
            foreach (GridColumn col in detailView.Columns) {  
                if (col.FieldName.Contains("!")) {  
                    col.Visible = false;  
                    col.OptionsColumn.ShowInCustomizationForm = false;  
                }  
            }  
            detailView.EndUpdate();  
        }  
    }  
}  

Visual Basic
Imports System  
Imports DevExpress.ExpressApp  
Imports DevExpress.XtraGrid  
Imports DevExpress.XtraGrid.Views.Grid  
Imports DevExpress.XtraGrid.Columns  
Imports DevExpress.ExpressApp.Win.Editors  

Namespace WinSolution.Module.Win  
    Public Class MasterDetailViewController  
        Inherits ViewController(Of ListView)  
        Protected Overrides Sub OnViewControlsCreated()  
            MyBase.OnViewControlsCreated()  
            Dim gridListEditor As GridListEditor = TryCast(View.Editor, GridListEditor)  
            If gridListEditor IsNot Nothing Then  
                Dim grid As GridControl = gridListEditor.Grid  
                Dim view As GridView = gridListEditor.GridView  
                view.OptionsPrint.PrintDetails = True  
                view.OptionsDetail.ShowDetailTabs = True  
                view.OptionsView.ShowDetailButtons = True  
                view.OptionsDetail.EnableMasterViewMode = True  
                AddHandler view.MasterRowExpanded, AddressOf view_MasterRowExpanded  
            End If  
        End Sub  
        Private Sub view_MasterRowExpanded(ByVal sender As Object, ByVal e As CustomMasterRowEventArgs)  
            Dim masterView As GridView = TryCast(sender, GridView)  
            Dim detailView As GridView = TryCast(masterView.GetDetailView(e.RowHandle, e.RelationIndex), GridView)  
            detailView.BeginUpdate()  
            detailView.OptionsDetail.EnableMasterViewMode = False  
            detailView.OptionsBehavior.Editable = False  
            For Each col As GridColumn In detailView.Columns  
                If col.FieldName.Contains("!") Then  
                    col.Visible = False  
                    col.OptionsColumn.ShowInCustomizationForm = False  
                End If  
            Next col  
            detailView.EndUpdate()  
        End Sub  
    End Class  
End Namespace  

My sample project is attached. Let me know if this meets your needs.
In addition, I suggest you track the following suggestion: ID AS12152 (ListEditors - Support showing both master and detail records in the same grid control).
Thanks
Dennis
P.S.
See also:
ID Q30147 (Show only one child tab within the grid control),
ID Q30148 (How can i suppress the tab header in the grid control),
ID Q30149 (How can i show my custom icon on child grid row header).