Row.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Common / CommandTrees / ExpressionBuilder / Row.cs / 1305376 / Row.cs
                        

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

using System.Collections.Generic; 
using System.Data.Common.CommandTrees;
using System.Data.Common.Utils;

namespace System.Data.Common.CommandTrees.ExpressionBuilder 
{
    ///  
    /// The Row class is intended to provide a constructor-like means of calling . 
    /// 
    internal sealed class Row 
    {
        private readonly System.Collections.ObjectModel.ReadOnlyCollection> arguments;

        ///  
        /// Constructs a new Row with the specified first column value and optional successive column values
        ///  
        /// A key-value pair that provides the first column in the new row instance (required) 
        /// Key-value pairs that provide any subsequent columns in the new row instance (optional)
        public Row(KeyValuePair columnValue, params KeyValuePair[] columnValues) 
        {
            this.arguments = new System.Collections.ObjectModel.ReadOnlyCollection>(Helpers.Prepend(columnValues, columnValue));
        }
 
        /// 
        /// Creates a new  that constructs a new row based on the columns 
        /// contained in this Row instance. 
        /// 
        /// A new DbNewInstanceExpression that constructs a row with the same column names and DbExpression values as this Row instance 
        /// 
        public DbNewInstanceExpression ToExpression()
        {
            return DbExpressionBuilder.NewRow(this.arguments); 
        }
 
        ///  
        /// Converts the given Row instance into an instance of 
        ///  
        /// 
        /// A DbExpression based on the Row instance
        ///  is null.
        ///  
        public static implicit operator DbExpression(Row row)
        { 
            EntityUtil.CheckArgumentNull(row, "row"); 
            return row.ToExpression();
        } 
    }
}

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

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