EntityParameterCollection.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / EntityClient / EntityParameterCollection.cs / 1305376 / EntityParameterCollection.cs
                        
                        
                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner  [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 
using System.Collections;
using System.Collections.Generic; 
using System.Text;
using System.Data;
using System.Data.Common;
using System.Data.Metadata.Edm; 

namespace System.Data.EntityClient 
{ 
    /// 
    /// Class representing a parameter collection used in EntityCommand 
    /// 
    public sealed partial class EntityParameterCollection : DbParameterCollection
    {
        private static Type ItemType = typeof(EntityParameter); 
        private bool _isDirty;
 
        ///  
        /// Constructs the EntityParameterCollection object
        ///  
        internal EntityParameterCollection()
            : base()
        {
        } 

        ///  
        /// Gets the parameter from the collection at the specified index 
        /// 
        /// The index of the parameter to retrieved 
        /// The parameter at the index
        public new EntityParameter this[int index]
        {
            get 
            {
                return (EntityParameter)this.GetParameter(index); 
            } 
            set
            { 
                this.SetParameter(index, value);
            }
        }
 
        /// 
        /// Gets the parameter with the given name from the collection 
        ///  
        /// The name of the parameter to retrieved
        /// The parameter with the given name 
        public new EntityParameter this[string parameterName]
        {
            get
            { 
                return (EntityParameter)this.GetParameter(parameterName);
            } 
            set 
            {
                this.SetParameter(parameterName, value); 
            }
        }

        ///  
        /// Gets whether this collection has been changes since the last reset
        ///  
        internal bool IsDirty 
        {
            get 
            {
                if (_isDirty)
                {
                    return true; 
                }
 
                // Loop through and return true if any parameter is dirty 
                foreach (EntityParameter parameter in this)
                { 
                    if (parameter.IsDirty)
                    {
                        return true;
                    } 
                }
 
                return false; 
            }
        } 

        /// 
        /// Add a EntityParameter to the collection
        ///  
        /// The parameter to add to the collection
        /// The index of the new parameter within the collection 
        public EntityParameter Add(EntityParameter value) 
        {
            this.Add((object)value); 
            return value;
        }

        ///  
        /// Add a EntityParameter with the given name and value to the collection
        ///  
        /// The name of the parameter to add 
        /// The value of the parameter to add
        /// The index of the new parameter within the collection 
        public EntityParameter AddWithValue(string parameterName, object value)
        {
            EntityParameter param = new EntityParameter();
            param.ParameterName = parameterName; 
            param.Value = value;
            return this.Add(param); 
        } 

        ///  
        /// Adds a EntityParameter with the given name and type to the collection
        /// 
        /// The name of the parameter to add
        /// The type of the parameter 
        /// The index of the new parameter within the collection
        public EntityParameter Add(string parameterName, DbType dbType) 
        { 
            return this.Add(new EntityParameter(parameterName, dbType));
        } 

        /// 
        /// Add a EntityParameter with the given name, type, and size to the collection
        ///  
        /// The name of the parameter to add
        /// The type of the parameter 
        /// The size of the parameter 
        /// The index of the new parameter within the collection
        public EntityParameter Add(string parameterName, DbType dbType, int size) 
        {
            return this.Add(new EntityParameter(parameterName, dbType, size));
        }
 
        /// 
        /// Adds a range of EntityParameter objects to this collection 
        ///  
        /// The arary of EntityParameter objects to add
        public void AddRange(EntityParameter[] values) 
        {
            this.AddRange((Array)values);
        }
 
        /// 
        /// Check if the collection has a parameter with the given parameter name 
        ///  
        /// The parameter name to look for
        /// True if the collection has a parameter with the given name 
        public override bool Contains(string parameterName)
        {
            return this.IndexOf(parameterName) != -1;
        } 

        ///  
        /// Copies the given array of parameters into this collection 
        /// 
        /// The array to copy into 
        /// The index in the array where the copy starts
        public void CopyTo(EntityParameter[] array, int index)
        {
            this.CopyTo((Array)array, index); 
        }
 
        ///  
        /// Finds the index in the collection of the given parameter object
        ///  
        /// The parameter to search for
        /// The index of the parameter, -1 if not found
        public int IndexOf(EntityParameter value)
        { 
            return IndexOf((object)value);
        } 
 
        /// 
        /// Add a EntityParameter with the given value to the collection at a location indicated by the index 
        /// 
        /// The index at which the parameter is to be inserted
        /// The value of the parameter
        public void Insert(int index, EntityParameter value) 
        {
            this.Insert(index, (object)value); 
        } 

        ///  
        /// Marks that this collection has been changed
        /// 
        private void OnChange()
        { 
            _isDirty = true;
        } 
 
        /// 
        /// Remove a EntityParameter with the given value from the collection 
        /// 
        /// The parameter to remove
        public void Remove(EntityParameter value)
        { 
            this.Remove((object)value);
        } 
 
        /// 
        /// Reset the dirty flag on the collection 
        /// 
        internal void ResetIsDirty()
        {
            _isDirty = false; 

            // Loop through and reset each parameter 
            foreach (EntityParameter parameter in this) 
            {
                parameter.ResetIsDirty(); 
            }
        }
    }
} 

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

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