DataViewSettingCollection.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Data / System / Data / DataViewSettingCollection.cs / 1305376 / DataViewSettingCollection.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
// [....]
// [....] 
//----------------------------------------------------------------------------- 

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

    [ 
    Editor("Microsoft.VSDesigner.Data.Design.DataViewSettingsCollectionEditor, " + AssemblyRef.MicrosoftVSDesigner, "System.Drawing.Design.UITypeEditor, " + AssemblyRef.SystemDrawing), 
    ]
    public class DataViewSettingCollection : ICollection { 
        private readonly DataViewManager dataViewManager;
        private readonly Hashtable list = new Hashtable();

        internal DataViewSettingCollection(DataViewManager dataViewManager) { 
            if (dataViewManager == null) {
                throw ExceptionBuilder.ArgumentNull("dataViewManager"); 
            } 
            this.dataViewManager = dataViewManager;
        } 

        public virtual DataViewSetting this[DataTable table] {
            get {
                if (table == null) { 
                    throw ExceptionBuilder.ArgumentNull("table");
                } 
                DataViewSetting dataViewSetting = (DataViewSetting) list[table]; 
                if(dataViewSetting == null) {
                    dataViewSetting = new DataViewSetting(); 
                    this[table] = dataViewSetting;
                }
                return dataViewSetting;
            } 
            set {
                if (table == null) { 
                    throw ExceptionBuilder.ArgumentNull("table"); 
                }
                value.SetDataViewManager(dataViewManager); 
                value.SetDataTable(table);
                list[table] = value;
            }
        } 

        private DataTable GetTable(string tableName) { 
            DataTable dt = null; 
            DataSet ds = dataViewManager.DataSet;
            if(ds != null) { 
                dt = ds.Tables[tableName];
            }
            return dt;
        } 

        private DataTable GetTable(int index) { 
            DataTable dt = null; 
            DataSet ds = dataViewManager.DataSet;
            if(ds != null) { 
                dt = ds.Tables[index];
            }
            return dt;
        } 

        public virtual DataViewSetting this[string tableName] { 
            get { 
                DataTable dt = GetTable(tableName);
                if(dt != null) { 
                    return this[dt];
                }
                return null;
            } 
        }
 
        public virtual DataViewSetting this[int index] { 
            get {
                DataTable dt = GetTable(index); 
                if(dt != null) {
                    return this[dt];
                }
                return null; 
            }
            set { 
                DataTable dt = GetTable(index); 
                if(dt != null) {
                    this[dt] = value; 
                }else {
                    // throw excaption here.
                }
            } 
        }
 
        // ----------- ICollection ------------------------- 
        public void CopyTo(Array ar, int index) {
            System.Collections.IEnumerator Enumerator = GetEnumerator(); 
            while (Enumerator.MoveNext()) {
                ar.SetValue(Enumerator.Current, index++);
            }
        } 

        public void CopyTo(DataViewSetting[] ar, int index) { 
            System.Collections.IEnumerator Enumerator = GetEnumerator(); 
            while (Enumerator.MoveNext()) {
                ar.SetValue(Enumerator.Current, index++); 
            }
        }

        [Browsable(false)] 
        public virtual int Count {
            get { 
                DataSet ds = dataViewManager.DataSet; 
                return (ds == null) ? 0 : ds.Tables.Count;
            } 
        }

        public IEnumerator GetEnumerator() {
            // I have to do something here. 
            return new DataViewSettingsEnumerator(dataViewManager);
        } 
 
        [
        Browsable(false) 
        ]
        public bool IsReadOnly {
            get {
                return true; 
            }
        } 
 
        [Browsable(false)]
        public bool IsSynchronized { 
            get {
                // so the user will know that it has to lock this object
                return false;
            } 
        }
 
        [Browsable(false)] 
        public object SyncRoot {
            get { 
                return this;
            }
        }
 
        internal void Remove(DataTable table) {
            list.Remove(table); 
        } 

        private sealed class DataViewSettingsEnumerator : IEnumerator { 
            DataViewSettingCollection dataViewSettings;
            IEnumerator                tableEnumerator;
            public DataViewSettingsEnumerator(DataViewManager dvm) {
                DataSet ds = dvm.DataSet; 
                if(ds != null) {
                    dataViewSettings = dvm.DataViewSettings; 
                    tableEnumerator  = dvm.DataSet.Tables.GetEnumerator(); 
                }else {
                    dataViewSettings = null; 
                    tableEnumerator  = DataSet.zeroTables.GetEnumerator();
                }
            }
            public bool MoveNext() { 
                return tableEnumerator.MoveNext();
            } 
            public void Reset() { 
                tableEnumerator.Reset();
            } 
            public object Current {
                get {
                    return dataViewSettings[(DataTable) tableEnumerator.Current];
                } 
            }
        } 
    } 
}
 

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

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