HierarchicalDataSourceControl.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / HierarchicalDataSourceControl.cs / 1305376 / HierarchicalDataSourceControl.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 
namespace System.Web.UI {
 
    using System.ComponentModel; 
    using System.Security.Permissions;
 

    [
    Bindable(false),
    ControlBuilder(typeof(DataSourceControlBuilder)), 
    Designer("System.Web.UI.Design.HierarchicalDataSourceDesigner, " + AssemblyRef.SystemDesign),
    NonVisualControl() 
    ] 
    public abstract class HierarchicalDataSourceControl : Control, IHierarchicalDataSource {
 
        private static readonly object EventDataSourceChanged = new object();

        [
        Browsable(false), 
        EditorBrowsable(EditorBrowsableState.Never),
        ] 
        public override string ClientID { 
            get {
                return base.ClientID; 
            }
        }

        [ 
        Browsable(false),
        DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden), 
        EditorBrowsable(EditorBrowsableState.Never) 
        ]
        public override ClientIDMode ClientIDMode { 
            get {
                return base.ClientIDMode;
            }
            set { 
                throw new NotSupportedException();
            } 
        } 

        [ 
        EditorBrowsable(EditorBrowsableState.Never),
        ]
        public override ControlCollection Controls {
            get { 
                return base.Controls;
            } 
        } 

 
        [
        Browsable(false),
        DefaultValue(false),
        EditorBrowsable(EditorBrowsableState.Never), 
        ]
        public override bool EnableTheming { 
            get { 
                return false;
            } 
            set {
                throw new NotSupportedException(SR.GetString(SR.NoThemingSupport, this.GetType().Name));
            }
        } 

 
        [ 
        Browsable(false),
        DefaultValue(""), 
        EditorBrowsable(EditorBrowsableState.Never),
        ]
        public override string SkinID {
            get { 
                return String.Empty;
            } 
            set { 
                throw new NotSupportedException(SR.GetString(SR.NoThemingSupport, this.GetType().Name));
            } 
        }


        ///  
        /// Gets or sets a value that indicates whether a control should be rendered on
        /// the page. 
        ///  
        [
        Browsable(false), 
        DefaultValue(false),
        EditorBrowsable(EditorBrowsableState.Never),
        ]
        public override bool Visible { 
            get {
                return false; 
            } 
            set {
                throw new NotSupportedException(SR.GetString(SR.ControlNonVisual, this.GetType().Name)); 
            }
        }

 
        [
        EditorBrowsable(EditorBrowsableState.Never), 
        ] 
        public override void ApplyStyleSheetSkin(Page page) {
            base.ApplyStyleSheetSkin(page); 
        }

        /// 
        /// Overidden to prevent child controls from being added to this control. 
        /// 
        protected override ControlCollection CreateControlCollection() { 
            return new EmptyControlCollection(this); 
        }
 
        [
        EditorBrowsable(EditorBrowsableState.Never),
        ]
        public override Control FindControl(string id) { 
            return base.FindControl(id);
        } 
 
        /// 
        ///  
        [
        EditorBrowsable(EditorBrowsableState.Never),
        ]
        public override void Focus() { 
            throw new NotSupportedException(SR.GetString(SR.NoFocusSupport, this.GetType().Name));
        } 
 
        protected abstract HierarchicalDataSourceView GetHierarchicalView(string viewPath);
 
        [
        EditorBrowsable(EditorBrowsableState.Never),
        ]
        public override bool HasControls() { 
            return base.HasControls();
        } 
 
        protected virtual void OnDataSourceChanged(EventArgs e) {
            EventHandler onDataSourceChangedHandler = (EventHandler)Events[EventDataSourceChanged]; 
            if (onDataSourceChangedHandler != null)
                onDataSourceChangedHandler(this, e);
        }
 
        [
        EditorBrowsable(EditorBrowsableState.Never), 
        ] 
        public override void RenderControl(HtmlTextWriter writer) {
            base.RenderControl(writer); 
        }

        #region Implementation of IHierarchicalDataSource
        ///  
        ///   Raised when the underlying data source has changed. The
        ///   change may be due to a change in the control's properties, 
        ///   or a change in the data due to an edit action performed by 
        ///   the DataSourceControl.
        ///  
        event EventHandler IHierarchicalDataSource.DataSourceChanged {
            add {
                Events.AddHandler(EventDataSourceChanged, value);
            } 
            remove {
                Events.RemoveHandler(EventDataSourceChanged, value); 
            } 
        }
 


        /// 
        HierarchicalDataSourceView IHierarchicalDataSource.GetHierarchicalView(string viewPath) { 
            return GetHierarchicalView(viewPath);
        } 
        #endregion 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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HierarchicalDataSourceControl.cs source code in C# .NET

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