MenuItemBindingCollection.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / WebControls / MenuItemBindingCollection.cs / 1305376 / MenuItemBindingCollection.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI.WebControls { 
    using System; 
    using System.Collections;
    using System.ComponentModel; 
    using System.Web;


    ///  
    ///     Provides a collection of MenuItemBinding objects
    ///  
    public sealed class MenuItemBindingCollection : StateManagedCollection { 
        private static readonly Type[] knownTypes = new Type[] { typeof(MenuItemBinding) };
 
        private Menu _owner;
        private MenuItemBinding _defaultBinding;

        private MenuItemBindingCollection() { 
        }
 
        internal MenuItemBindingCollection(Menu owner) { 
            _owner = owner;
        } 

        /// 
        /// Gets the MenuItemBinding at the specified index
        ///  
        public MenuItemBinding this[int i] {
            get { 
                return (MenuItemBinding)((IList)this)[i]; 
            }
            set { 
                ((IList)this)[i] = value;
            }
        }
 
        /// 
        /// Adds a MenuItemBinding to the collection 
        ///  
        public int Add(MenuItemBinding binding) {
            return ((IList)this).Add(binding); 
        }

        public bool Contains(MenuItemBinding binding) {
            return ((IList)this).Contains(binding); 
        }
 
        public void CopyTo(MenuItemBinding[] array, int index) { 
            ((IList)this).CopyTo(array, index);
        } 

        protected override object CreateKnownType(int index) {
            return new MenuItemBinding();
        } 

        private void FindDefaultBinding() { 
            _defaultBinding = null; 
            // Look for another binding that would be a good default
            foreach (MenuItemBinding binding in this) { 
                if (binding.Depth == -1 && binding.DataMember.Length == 0) {
                    _defaultBinding = binding;
                    break;
                } 
            }
        } 
 
        /// 
        ///     Gets a MenuItemBinding data binding definition for the specified depth or datamember 
        /// 
        internal MenuItemBinding GetBinding(string dataMember, int depth) {
            MenuItemBinding bestMatch = null;
            int match = 0; 
            if ((dataMember != null) && (dataMember.Length == 0)) {
                dataMember = null; 
            } 

            foreach (MenuItemBinding binding in this) { 
                if ((binding.Depth == depth)) {
                    if (String.Equals(binding.DataMember, dataMember, StringComparison.CurrentCultureIgnoreCase)) {
                        return binding;
                    } 
                    else if ((match < 1) && (binding.DataMember.Length == 0)) {
                        bestMatch = binding; 
                        match = 1; 
                    }
                } 
                else if (String.Equals(binding.DataMember, dataMember, StringComparison.CurrentCultureIgnoreCase) &&
                    (match < 2) &&
                    (binding.Depth == -1)) {
 
                    bestMatch = binding;
                    match = 2; 
                } 
            }
 
            if (bestMatch == null) {
                // Check that the default binding is still suitable (VSWhidbey 358817)
                if (_defaultBinding != null) {
                    if (_defaultBinding.Depth != -1 || _defaultBinding.DataMember.Length != 0) { 
                        // Look for another binding that would be a good default
                        FindDefaultBinding(); 
                    } 
                    bestMatch = _defaultBinding;
                } 
            }

            return bestMatch;
        } 

        protected override Type[] GetKnownTypes() { 
            return knownTypes; 
        }
 
        public int IndexOf(MenuItemBinding value) {
            return ((IList)this).IndexOf(value);
        }
 
        public void Insert(int index, MenuItemBinding binding) {
            ((IList)this).Insert(index, binding); 
        } 

        protected override void OnClear() { 
            _defaultBinding = null;
        }

        protected override void OnRemoveComplete(int index, object value) { 
            if (value == _defaultBinding) {
                FindDefaultBinding(); 
            } 
        }
 
        protected override void OnValidate(object value) {
            base.OnValidate(value);
            MenuItemBinding binding = value as MenuItemBinding;
            if ((binding != null) && (binding.DataMember.Length == 0) && (binding.Depth == -1)) { 
                _defaultBinding = binding;
            } 
        } 

        ///  
        /// Removes a MenuItemBinding from the collection.
        /// 
        public void Remove(MenuItemBinding binding) {
            ((IList)this).Remove(binding); 
        }
 
        ///  
        /// Removes a MenuItemBinding from the collection at a given index.
        ///  
        public void RemoveAt(int index) {
            ((IList)this).RemoveAt(index);
        }
 
        protected override void SetDirtyObject(object o) {
            if (o is MenuItemBinding) { 
                ((MenuItemBinding)o).SetDirty(); 
            }
        } 
    }
}


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

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