DataRowCollection.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / Data / System / Data / DataRowCollection.cs / 1 / DataRowCollection.cs

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

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

#if WINFSInternalOnly 
    internal 
#else
    public 
#endif
    sealed class DataRowCollection : InternalDataCollectionBase {

        private sealed class DataRowTree : RBTree { 
            internal DataRowTree() : base(TreeAccessMethod.INDEX_ONLY) {
            } 
 
            protected override int CompareNode (DataRow record1, DataRow record2) {
                throw ExceptionBuilder.InternalRBTreeError(RBTreeError.CompareNodeInDataRowTree); 
            }
            protected override int CompareSateliteTreeNode (DataRow record1, DataRow record2) {
                throw ExceptionBuilder.InternalRBTreeError(RBTreeError.CompareSateliteTreeNodeInDataRowTree);
            } 
        }
 
        private readonly DataTable table; 
        private readonly DataRowTree list = new DataRowTree();
        internal int nullInList = 0; 

        /// 
        /// Creates the DataRowCollection for the given table.
        ///  
        internal DataRowCollection(DataTable table) {
            this.table = table; 
        } 

        public override int Count { 
            get {
                return list.Count;
            }
        } 

        ///  
        ///    Gets the row at the specified index. 
        /// 
        public DataRow this[int index] { 
            get {
                return list[index];
            }
        } 

        ///  
        /// Adds the specified  to the  object. 
        /// 
        public void Add(DataRow row) { 
            table.AddRow(row, -1);
        }

        public void InsertAt(DataRow row, int pos) { 
            if (pos < 0)
                throw ExceptionBuilder.RowInsertOutOfRange(pos); 
            if (pos >= list.Count) 
                table.AddRow(row, -1);
            else 
                table.InsertRow(row, -1, pos);
        }

        internal void DiffInsertAt(DataRow row, int pos) { 
            if ((pos < 0) || (pos == list.Count)) {
                table.AddRow(row, pos >-1? pos+1 : -1); 
                return; 
            }
            if (table.NestedParentRelations.Length > 0) { // get in this trouble only if  table has a nested parent 
            // get into trouble if table has JUST a nested parent? how about multi parent!
                if (pos < list.Count) {
                    if (list[pos] != null) {
                        throw ExceptionBuilder.RowInsertTwice(pos, table.TableName); 
                    }
                    list.RemoveAt(pos); 
                    nullInList--; 
                    table.InsertRow(row, pos+1, pos);
                } 
                else {
                    while (pos>list.Count) {
                        list.Add(null);
                        nullInList++; 
                    }
                    table.AddRow(row, pos+1); 
                } 
            }
            else { 
                table.InsertRow(row, pos+1, pos > list.Count ? -1 : pos);
            }
        }
 
        public Int32 IndexOf(DataRow row) {
            if ((null == row) || (row.Table != this.table) || ((0 == row.RBTreeNodeId) && (row.RowState == DataRowState.Detached))) //Webdata 102857 
                return -1; 
            return list.IndexOf(row.RBTreeNodeId, row);
        } 

        /// 
        ///    Creates a row using specified values and adds it to the
        ///    . 
        /// 
        internal DataRow AddWithColumnEvents(params object[] values) { 
            DataRow row = table.NewRow(-1); 
            row.ItemArray = values;
            table.AddRow(row, -1); 
            return row;
        }

        public DataRow Add(params object[] values) { 
            int record = table.NewRecordFromArray(values);
            DataRow row = table.NewRow(record); 
            table.AddRow(row, -1); 
            return row;
        } 

        internal void ArrayAdd(DataRow row) {
            row.RBTreeNodeId = list.Add(row);
        } 

        internal void ArrayInsert(DataRow row, int pos) { 
            row.RBTreeNodeId = list.Insert(pos, row); 
        }
 
        internal void ArrayClear() {
            list.Clear();
        }
 
        internal void ArrayRemove(DataRow row) {
            if (row.RBTreeNodeId == 0) { 
                throw ExceptionBuilder.InternalRBTreeError(RBTreeError.AttachedNodeWithZerorbTreeNodeId); 
            }
            list.RBDelete(row.RBTreeNodeId); 
            row.RBTreeNodeId = 0;
        }

        ///  
        ///    Gets
        ///       the row specified by the primary key value. 
        ///        
        /// 
        public DataRow Find(object key) { 
            return table.FindByPrimaryKey(key);
        }

        ///  
        ///    Gets the row containing the specified primary key values.
        ///  
        public DataRow Find(object[] keys) { 
            return table.FindByPrimaryKey(keys);
        } 

        /// 
        ///    Clears the collection of all rows.
        ///  
        public void Clear() {
            table.Clear(false); 
        } 

        ///  
        ///    
        ///       Gets a value indicating whether the primary key of any row in the
        ///       collection contains the specified value.
        ///     
        /// 
        public bool Contains(object key) { 
            return(table.FindByPrimaryKey(key) != null); 
        }
 
        /// 
        ///    
        ///       Gets a value indicating if the  with
        ///       the specified primary key values exists. 
        ///    
        ///  
        public bool Contains(object[] keys) { 
            return(table.FindByPrimaryKey(keys) != null);
        } 

        public override void CopyTo(Array ar, int index) {
            list.CopyTo(ar, index);
        } 

        public void CopyTo(DataRow[] array, int index) { 
            list.CopyTo(array, index); 
        }
 
        public override IEnumerator GetEnumerator() {
            return list.GetEnumerator();
        }
 
        /// 
        /// Removes the specified  from the collection. 
        ///  
        public void Remove(DataRow row) {
            if ((null == row) || (row.Table != table) || (-1 == row.rowID)) { 
                throw ExceptionBuilder.RowOutOfRange();
            }

            if ((row.RowState != DataRowState.Deleted) && (row.RowState != DataRowState.Detached)) 
                row.Delete();
 
            if (row.RowState != DataRowState.Detached) 
                row.AcceptChanges();
        } 

        /// 
        ///    
        ///       Removes the row with the specified index from 
        ///       the collection.
        ///     
        ///  
        public void RemoveAt(int index) {
                Remove(this[index]); 
        }
    }
}

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

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

#if WINFSInternalOnly 
    internal 
#else
    public 
#endif
    sealed class DataRowCollection : InternalDataCollectionBase {

        private sealed class DataRowTree : RBTree { 
            internal DataRowTree() : base(TreeAccessMethod.INDEX_ONLY) {
            } 
 
            protected override int CompareNode (DataRow record1, DataRow record2) {
                throw ExceptionBuilder.InternalRBTreeError(RBTreeError.CompareNodeInDataRowTree); 
            }
            protected override int CompareSateliteTreeNode (DataRow record1, DataRow record2) {
                throw ExceptionBuilder.InternalRBTreeError(RBTreeError.CompareSateliteTreeNodeInDataRowTree);
            } 
        }
 
        private readonly DataTable table; 
        private readonly DataRowTree list = new DataRowTree();
        internal int nullInList = 0; 

        /// 
        /// Creates the DataRowCollection for the given table.
        ///  
        internal DataRowCollection(DataTable table) {
            this.table = table; 
        } 

        public override int Count { 
            get {
                return list.Count;
            }
        } 

        ///  
        ///    Gets the row at the specified index. 
        /// 
        public DataRow this[int index] { 
            get {
                return list[index];
            }
        } 

        ///  
        /// Adds the specified  to the  object. 
        /// 
        public void Add(DataRow row) { 
            table.AddRow(row, -1);
        }

        public void InsertAt(DataRow row, int pos) { 
            if (pos < 0)
                throw ExceptionBuilder.RowInsertOutOfRange(pos); 
            if (pos >= list.Count) 
                table.AddRow(row, -1);
            else 
                table.InsertRow(row, -1, pos);
        }

        internal void DiffInsertAt(DataRow row, int pos) { 
            if ((pos < 0) || (pos == list.Count)) {
                table.AddRow(row, pos >-1? pos+1 : -1); 
                return; 
            }
            if (table.NestedParentRelations.Length > 0) { // get in this trouble only if  table has a nested parent 
            // get into trouble if table has JUST a nested parent? how about multi parent!
                if (pos < list.Count) {
                    if (list[pos] != null) {
                        throw ExceptionBuilder.RowInsertTwice(pos, table.TableName); 
                    }
                    list.RemoveAt(pos); 
                    nullInList--; 
                    table.InsertRow(row, pos+1, pos);
                } 
                else {
                    while (pos>list.Count) {
                        list.Add(null);
                        nullInList++; 
                    }
                    table.AddRow(row, pos+1); 
                } 
            }
            else { 
                table.InsertRow(row, pos+1, pos > list.Count ? -1 : pos);
            }
        }
 
        public Int32 IndexOf(DataRow row) {
            if ((null == row) || (row.Table != this.table) || ((0 == row.RBTreeNodeId) && (row.RowState == DataRowState.Detached))) //Webdata 102857 
                return -1; 
            return list.IndexOf(row.RBTreeNodeId, row);
        } 

        /// 
        ///    Creates a row using specified values and adds it to the
        ///    . 
        /// 
        internal DataRow AddWithColumnEvents(params object[] values) { 
            DataRow row = table.NewRow(-1); 
            row.ItemArray = values;
            table.AddRow(row, -1); 
            return row;
        }

        public DataRow Add(params object[] values) { 
            int record = table.NewRecordFromArray(values);
            DataRow row = table.NewRow(record); 
            table.AddRow(row, -1); 
            return row;
        } 

        internal void ArrayAdd(DataRow row) {
            row.RBTreeNodeId = list.Add(row);
        } 

        internal void ArrayInsert(DataRow row, int pos) { 
            row.RBTreeNodeId = list.Insert(pos, row); 
        }
 
        internal void ArrayClear() {
            list.Clear();
        }
 
        internal void ArrayRemove(DataRow row) {
            if (row.RBTreeNodeId == 0) { 
                throw ExceptionBuilder.InternalRBTreeError(RBTreeError.AttachedNodeWithZerorbTreeNodeId); 
            }
            list.RBDelete(row.RBTreeNodeId); 
            row.RBTreeNodeId = 0;
        }

        ///  
        ///    Gets
        ///       the row specified by the primary key value. 
        ///        
        /// 
        public DataRow Find(object key) { 
            return table.FindByPrimaryKey(key);
        }

        ///  
        ///    Gets the row containing the specified primary key values.
        ///  
        public DataRow Find(object[] keys) { 
            return table.FindByPrimaryKey(keys);
        } 

        /// 
        ///    Clears the collection of all rows.
        ///  
        public void Clear() {
            table.Clear(false); 
        } 

        ///  
        ///    
        ///       Gets a value indicating whether the primary key of any row in the
        ///       collection contains the specified value.
        ///     
        /// 
        public bool Contains(object key) { 
            return(table.FindByPrimaryKey(key) != null); 
        }
 
        /// 
        ///    
        ///       Gets a value indicating if the  with
        ///       the specified primary key values exists. 
        ///    
        ///  
        public bool Contains(object[] keys) { 
            return(table.FindByPrimaryKey(keys) != null);
        } 

        public override void CopyTo(Array ar, int index) {
            list.CopyTo(ar, index);
        } 

        public void CopyTo(DataRow[] array, int index) { 
            list.CopyTo(array, index); 
        }
 
        public override IEnumerator GetEnumerator() {
            return list.GetEnumerator();
        }
 
        /// 
        /// Removes the specified  from the collection. 
        ///  
        public void Remove(DataRow row) {
            if ((null == row) || (row.Table != table) || (-1 == row.rowID)) { 
                throw ExceptionBuilder.RowOutOfRange();
            }

            if ((row.RowState != DataRowState.Deleted) && (row.RowState != DataRowState.Detached)) 
                row.Delete();
 
            if (row.RowState != DataRowState.Detached) 
                row.AcceptChanges();
        } 

        /// 
        ///    
        ///       Removes the row with the specified index from 
        ///       the collection.
        ///     
        ///  
        public void RemoveAt(int index) {
                Remove(this[index]); 
        }
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
                        

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