DataViewManagerListItemTypeDescriptor.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Data / System / Data / DataViewManagerListItemTypeDescriptor.cs / 1 / DataViewManagerListItemTypeDescriptor.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
// [....]
// [....] 
//----------------------------------------------------------------------------- 

namespace System.Data { 
    using System;
    using System.ComponentModel;

    ///  
    ///    [To be supplied.]
    ///  
    internal sealed class DataViewManagerListItemTypeDescriptor : ICustomTypeDescriptor { 

        private DataViewManager dataViewManager; 
        private PropertyDescriptorCollection propsCollection;

        internal DataViewManagerListItemTypeDescriptor(DataViewManager dataViewManager) {
            this.dataViewManager = dataViewManager; 
        }
 
        internal void Reset() { 
            propsCollection = null;
        } 

        internal DataView GetDataView(DataTable table) {
            DataView dataView = new DataView(table);
            dataView.SetDataViewManager(dataViewManager); 
            return dataView;
        } 
 
        /// 
        ///     Retrieves an array of member attributes for the given object. 
        /// 
        AttributeCollection ICustomTypeDescriptor.GetAttributes() {
            return new AttributeCollection((Attribute[])null);
        } 

        ///  
        ///     Retrieves the class name for this object.  If null is returned, 
        ///     the type name is used.
        ///  
        string ICustomTypeDescriptor.GetClassName() {
            return null;
        }
 
        /// 
        ///     Retrieves the name for this object.  If null is returned, 
        ///     the default is used. 
        /// 
        string ICustomTypeDescriptor.GetComponentName() { 
            return null;
        }

        ///  
        ///      Retrieves the type converter for this object.
        ///  
        TypeConverter ICustomTypeDescriptor.GetConverter() { 
            return null;
        } 

        /// 
        ///     Retrieves the default event.
        ///  
        EventDescriptor ICustomTypeDescriptor.GetDefaultEvent() {
            return null; 
        } 

 
        /// 
        ///     Retrieves the default property.
        /// 
        PropertyDescriptor ICustomTypeDescriptor.GetDefaultProperty() { 
            return null;
        } 
 
        /// 
        ///      Retrieves the an editor for this object. 
        /// 
        object ICustomTypeDescriptor.GetEditor(Type editorBaseType) {
            return null;
        } 

        ///  
        ///     Retrieves an array of events that the given component instance 
        ///     provides.  This may differ from the set of events the class
        ///     provides.  If the component is sited, the site may add or remove 
        ///     additional events.
        /// 
        EventDescriptorCollection ICustomTypeDescriptor.GetEvents() {
            return new EventDescriptorCollection(null); 
        }
 
        ///  
        ///     Retrieves an array of events that the given component instance
        ///     provides.  This may differ from the set of events the class 
        ///     provides.  If the component is sited, the site may add or remove
        ///     additional events.  The returned array of events will be
        ///     filtered by the given set of attributes.
        ///  
        EventDescriptorCollection ICustomTypeDescriptor.GetEvents(Attribute[] attributes) {
            return new EventDescriptorCollection(null); 
        } 

        ///  
        ///     Retrieves an array of properties that the given component instance
        ///     provides.  This may differ from the set of properties the class
        ///     provides.  If the component is sited, the site may add or remove
        ///     additional properties. 
        /// 
        PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties() { 
            return((ICustomTypeDescriptor)this).GetProperties(null); 
        }
 
        /// 
        ///     Retrieves an array of properties that the given component instance
        ///     provides.  This may differ from the set of properties the class
        ///     provides.  If the component is sited, the site may add or remove 
        ///     additional properties.  The returned array of properties will be
        ///     filtered by the given set of attributes. 
        ///  
        PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties(Attribute[] attributes) {
            if (propsCollection == null) { 
                PropertyDescriptor[] props = null;
                DataSet dataSet = dataViewManager.DataSet;
                if (dataSet != null) {
                    int tableCount = dataSet.Tables.Count; 
                    props = new PropertyDescriptor[tableCount];
                    for (int i = 0; i < tableCount; i++) { 
                        props[i] = new DataTablePropertyDescriptor(dataSet.Tables[i]); 
                    }
                } 
                propsCollection = new PropertyDescriptorCollection(props);
            }
            return propsCollection;
        } 

        ///  
        ///     Retrieves the object that directly depends on this value being edited.  This is 
        ///     generally the object that is required for the PropertyDescriptor's GetValue and SetValue
        ///     methods.  If 'null' is passed for the PropertyDescriptor, the ICustomComponent 
        ///     descripotor implemementation should return the default object, that is the main
        ///     object that exposes the properties and attributes,
        /// 
        object ICustomTypeDescriptor.GetPropertyOwner(PropertyDescriptor pd) { 
            return this;
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu

Network programming in C#, Network Programming in VB.NET, Network Programming in .NET
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
DataViewManagerListItemTypeDescriptor.cs source code in C# .NET

Source code for the .NET framework in C#

Code:

Link Menu
