DataFieldEditor.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / Designer / WebForms / System / Web / UI / Design / WebControls / DataFieldEditor.cs / 1 / DataFieldEditor.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

/* 
 */ 
namespace System.Web.UI.Design.WebControls {
 
    using System;
    using System.Collections;
    using Microsoft.Win32;
    using System.ComponentModel; 
    using System.ComponentModel.Design;
    using System.Diagnostics; 
    using System.Drawing; 
    using System.Windows.Forms;
 
    /// 
    /// 
    ///      The DataFieldEditor is a collection editor that is specifically
    ///      designed to edit arrays containing strings. 
    /// 
    [System.Security.Permissions.SecurityPermission(System.Security.Permissions.SecurityAction.Demand, Flags=System.Security.Permissions.SecurityPermissionFlag.UnmanagedCode)] 
    internal class DataFieldEditor : DataFieldCollectionEditor { 

        public DataFieldEditor(Type type) : base(type) { 
        }

        /// 
        ///  
        ///      Retrieves the data type this collection contains.  The default
        ///      implementation looks inside of the collection for the Item property 
        ///      and returns the returning datatype of the item.  Do not call this 
        ///      method directly.  Instead, use the CollectionItemType property.  Use this
        ///      method to override the default implementation. 
        /// 
        protected override Type CreateCollectionItemType() {
            return CollectionType.GetElementType();
        } 

        ///  
        ///  
        ///      We implement the getting and setting of items on this collection.
        ///  
        protected override object[] GetItems(object editValue) {
            if (editValue is Array) {
                Array valueArray = (Array)editValue;
                object[] items = new object[valueArray.GetLength(0)]; 
                Array.Copy(valueArray, items, items.Length);
                return items; 
            } 
            else {
                return new object[0]; 
            }
        }

        ///  
        /// 
        ///      We implement the getting and setting of items on this collection. 
        ///      It should return an instance to replace editValue with, or editValue 
        ///      if there is no need to replace the instance.
        ///  
        protected override object SetItems(object editValue, object[] value) {
            if (editValue is Array || editValue == null) {
                Array newArray = Array.CreateInstance(CollectionItemType, value.Length);
                Array.Copy(value, newArray, value.Length); 
                return newArray;
            } 
            return editValue; 
        }
    } 
}


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

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