Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / WebControls / ParameterCollection.cs / 1305376 / ParameterCollection.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.Collections;
using System.Collections.Specialized;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Data;
using System.Drawing.Design;
using System.Globalization;
using System.Reflection;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Util;
///
/// A state managed collection of Parameter objects.
/// These are used in many DataSourceControls to filter queries.
///
[
Editor("System.Web.UI.Design.WebControls.ParameterCollectionEditor, " + AssemblyRef.SystemDesign, typeof(UITypeEditor)),
]
public class ParameterCollection : StateManagedCollection {
private EventHandler _parametersChangedHandler;
private static readonly Type[] knownTypes = new Type[] {
typeof(ControlParameter),
typeof(CookieParameter),
typeof(FormParameter),
typeof(Parameter),
typeof(QueryStringParameter),
typeof(SessionParameter),
typeof(ProfileParameter),
};
///
/// Returns the Parameter at a given index.
///
public Parameter this[int index] {
get {
return (Parameter)((IList)this)[index];
}
set {
((IList)this)[index] = value;
}
}
///
/// Returns the Parameter with a given name.
///
public Parameter this[string name] {
get {
int parameterIndex = GetParameterIndex(name);
if (parameterIndex == -1) {
return null;
}
return this[parameterIndex];
}
set {
int parameterIndex = GetParameterIndex(name);
if (parameterIndex == -1) {
Add(value);
}
else {
this[parameterIndex] = value;
}
}
}
///
/// Occurs when any of the Parameter objects in the collection change or when the collection itself changes.
///
public event EventHandler ParametersChanged {
add {
_parametersChangedHandler = (EventHandler)Delegate.Combine(_parametersChangedHandler, value);
}
remove {
_parametersChangedHandler = (EventHandler)Delegate.Remove(_parametersChangedHandler, value);
}
}
///
/// Adds a Parameter to the collection.
///
public int Add(Parameter parameter) {
return ((IList)this).Add(parameter);
}
///
/// Adds a Parameter to the collection with a specified name and value.
///
public int Add(string name, string value) {
return ((IList)this).Add(new Parameter(name, TypeCode.Empty, value));
}
///
/// Adds a Parameter to the collection with a specified name, type, and value.
///
public int Add(string name, TypeCode type, string value) {
return ((IList)this).Add(new Parameter(name, type, value));
}
///
/// Adds a Parameter to the collection with a specified name, database type, and value.
///
public int Add(string name, DbType dbType, string value) {
return ((IList)this).Add(new Parameter(name, dbType, value));
}
///
/// Used by Parameters to raise the ParametersChanged event.
///
internal void CallOnParametersChanged() {
OnParametersChanged(EventArgs.Empty);
}
public bool Contains(Parameter parameter) {
return ((IList)this).Contains(parameter);
}
public void CopyTo(Parameter[] parameterArray, int index) {
base.CopyTo(parameterArray, index);
}
///
/// Creates a known type of Parameter.
///
protected override object CreateKnownType(int index) {
switch (index) {
case 0:
return new ControlParameter();
case 1:
return new CookieParameter();
case 2:
return new FormParameter();
case 3:
return new Parameter();
case 4:
return new QueryStringParameter();
case 5:
return new SessionParameter();
case 6:
return new ProfileParameter();
default:
throw new ArgumentOutOfRangeException("index");
}
}
///
/// Returns an ArrayList of known Parameter types.
///
protected override Type[] GetKnownTypes() {
return knownTypes;
}
///
/// Returns the index of a parameter by name.
///
private int GetParameterIndex(string name) {
for (int i = 0; i < Count; i++) {
if (String.Equals(this[i].Name, name, StringComparison.OrdinalIgnoreCase)) {
return i;
}
}
return -1;
}
///
/// Returns an IDictionary containing Name / Value pairs of all the parameters.
///
public IOrderedDictionary GetValues(HttpContext context, Control control) {
UpdateValues(context, control);
// Create dictionary
IOrderedDictionary valueDictionary = new OrderedDictionary();
// Add Parameters
foreach (Parameter param in this) {
// For the OrderedDictionary, every parameter must have a unique name, so in some cases we have to alter them.
string uniqueName = param.Name;
int count = 1;
while (valueDictionary.Contains(uniqueName)) {
uniqueName = param.Name + count.ToString(CultureInfo.InvariantCulture);
count++;
}
valueDictionary.Add(uniqueName, param.ParameterValue);
}
return valueDictionary;
}
public int IndexOf(Parameter parameter) {
return ((IList)this).IndexOf(parameter);
}
///
/// Inserts a Parameter into the collection.
///
public void Insert(int index, Parameter parameter) {
((IList)this).Insert(index, parameter);
}
///
/// Called when the Clear() method is complete.
///
protected override void OnClearComplete() {
base.OnClearComplete();
OnParametersChanged(EventArgs.Empty);
}
///
/// Called when the Insert() method is starting.
/// Adds an event handler to listen to the Parameter's ParameterChanged event.
///
protected override void OnInsert(int index, object value) {
base.OnInsert(index, value);
// Set owner (we are guaranteed that it is a Parameter
// in OnValidate).
((Parameter)value).SetOwner(this);
}
///
/// Called when the Insert() method is complete.
///
protected override void OnInsertComplete(int index, object value) {
base.OnInsertComplete(index, value);
OnParametersChanged(EventArgs.Empty);
}
///
/// Raises the ParametersChanged event.
///
protected virtual void OnParametersChanged(EventArgs e) {
if (_parametersChangedHandler != null) {
_parametersChangedHandler(this, e);
}
}
///
/// Called when the Remove() method is complete.
///
protected override void OnRemoveComplete(int index, object value) {
base.OnRemoveComplete(index, value);
// Clear owner
((Parameter)value).SetOwner(null);
OnParametersChanged(EventArgs.Empty);
}
///
/// Validates that an object is a Parameter.
///
protected override void OnValidate(object o) {
base.OnValidate(o);
if (!(o is Parameter))
throw new ArgumentException(SR.GetString(SR.ParameterCollection_NotParameter), "o");
}
///
/// Removes a Parameter from the collection.
///
public void Remove(Parameter parameter) {
((IList)this).Remove(parameter);
}
///
/// Removes a Parameter from the collection at a given index.
///
public void RemoveAt(int index) {
((IList)this).RemoveAt(index);
}
///
/// Marks a Parameter as dirty so that it will record its entire state into view state.
///
protected override void SetDirtyObject(object o) {
((Parameter)o).SetDirty();
}
///
/// Updates all parameter values to possibly raise a ParametersChanged event.
///
public void UpdateValues(HttpContext context, Control control) {
foreach (Parameter param in this) {
param.UpdateValue(context, control);
}
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Web.UI.WebControls {
using System;
using System.Collections;
using System.Collections.Specialized;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Data;
using System.Drawing.Design;
using System.Globalization;
using System.Reflection;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Util;
///
/// A state managed collection of Parameter objects.
/// These are used in many DataSourceControls to filter queries.
///
[
Editor("System.Web.UI.Design.WebControls.ParameterCollectionEditor, " + AssemblyRef.SystemDesign, typeof(UITypeEditor)),
]
public class ParameterCollection : StateManagedCollection {
private EventHandler _parametersChangedHandler;
private static readonly Type[] knownTypes = new Type[] {
typeof(ControlParameter),
typeof(CookieParameter),
typeof(FormParameter),
typeof(Parameter),
typeof(QueryStringParameter),
typeof(SessionParameter),
typeof(ProfileParameter),
};
///
/// Returns the Parameter at a given index.
///
public Parameter this[int index] {
get {
return (Parameter)((IList)this)[index];
}
set {
((IList)this)[index] = value;
}
}
///
/// Returns the Parameter with a given name.
///
public Parameter this[string name] {
get {
int parameterIndex = GetParameterIndex(name);
if (parameterIndex == -1) {
return null;
}
return this[parameterIndex];
}
set {
int parameterIndex = GetParameterIndex(name);
if (parameterIndex == -1) {
Add(value);
}
else {
this[parameterIndex] = value;
}
}
}
///
/// Occurs when any of the Parameter objects in the collection change or when the collection itself changes.
///
public event EventHandler ParametersChanged {
add {
_parametersChangedHandler = (EventHandler)Delegate.Combine(_parametersChangedHandler, value);
}
remove {
_parametersChangedHandler = (EventHandler)Delegate.Remove(_parametersChangedHandler, value);
}
}
///
/// Adds a Parameter to the collection.
///
public int Add(Parameter parameter) {
return ((IList)this).Add(parameter);
}
///
/// Adds a Parameter to the collection with a specified name and value.
///
public int Add(string name, string value) {
return ((IList)this).Add(new Parameter(name, TypeCode.Empty, value));
}
///
/// Adds a Parameter to the collection with a specified name, type, and value.
///
public int Add(string name, TypeCode type, string value) {
return ((IList)this).Add(new Parameter(name, type, value));
}
///
/// Adds a Parameter to the collection with a specified name, database type, and value.
///
public int Add(string name, DbType dbType, string value) {
return ((IList)this).Add(new Parameter(name, dbType, value));
}
///
/// Used by Parameters to raise the ParametersChanged event.
///
internal void CallOnParametersChanged() {
OnParametersChanged(EventArgs.Empty);
}
public bool Contains(Parameter parameter) {
return ((IList)this).Contains(parameter);
}
public void CopyTo(Parameter[] parameterArray, int index) {
base.CopyTo(parameterArray, index);
}
///
/// Creates a known type of Parameter.
///
protected override object CreateKnownType(int index) {
switch (index) {
case 0:
return new ControlParameter();
case 1:
return new CookieParameter();
case 2:
return new FormParameter();
case 3:
return new Parameter();
case 4:
return new QueryStringParameter();
case 5:
return new SessionParameter();
case 6:
return new ProfileParameter();
default:
throw new ArgumentOutOfRangeException("index");
}
}
///
/// Returns an ArrayList of known Parameter types.
///
protected override Type[] GetKnownTypes() {
return knownTypes;
}
///
/// Returns the index of a parameter by name.
///
private int GetParameterIndex(string name) {
for (int i = 0; i < Count; i++) {
if (String.Equals(this[i].Name, name, StringComparison.OrdinalIgnoreCase)) {
return i;
}
}
return -1;
}
///
/// Returns an IDictionary containing Name / Value pairs of all the parameters.
///
public IOrderedDictionary GetValues(HttpContext context, Control control) {
UpdateValues(context, control);
// Create dictionary
IOrderedDictionary valueDictionary = new OrderedDictionary();
// Add Parameters
foreach (Parameter param in this) {
// For the OrderedDictionary, every parameter must have a unique name, so in some cases we have to alter them.
string uniqueName = param.Name;
int count = 1;
while (valueDictionary.Contains(uniqueName)) {
uniqueName = param.Name + count.ToString(CultureInfo.InvariantCulture);
count++;
}
valueDictionary.Add(uniqueName, param.ParameterValue);
}
return valueDictionary;
}
public int IndexOf(Parameter parameter) {
return ((IList)this).IndexOf(parameter);
}
///
/// Inserts a Parameter into the collection.
///
public void Insert(int index, Parameter parameter) {
((IList)this).Insert(index, parameter);
}
///
/// Called when the Clear() method is complete.
///
protected override void OnClearComplete() {
base.OnClearComplete();
OnParametersChanged(EventArgs.Empty);
}
///
/// Called when the Insert() method is starting.
/// Adds an event handler to listen to the Parameter's ParameterChanged event.
///
protected override void OnInsert(int index, object value) {
base.OnInsert(index, value);
// Set owner (we are guaranteed that it is a Parameter
// in OnValidate).
((Parameter)value).SetOwner(this);
}
///
/// Called when the Insert() method is complete.
///
protected override void OnInsertComplete(int index, object value) {
base.OnInsertComplete(index, value);
OnParametersChanged(EventArgs.Empty);
}
///
/// Raises the ParametersChanged event.
///
protected virtual void OnParametersChanged(EventArgs e) {
if (_parametersChangedHandler != null) {
_parametersChangedHandler(this, e);
}
}
///
/// Called when the Remove() method is complete.
///
protected override void OnRemoveComplete(int index, object value) {
base.OnRemoveComplete(index, value);
// Clear owner
((Parameter)value).SetOwner(null);
OnParametersChanged(EventArgs.Empty);
}
///
/// Validates that an object is a Parameter.
///
protected override void OnValidate(object o) {
base.OnValidate(o);
if (!(o is Parameter))
throw new ArgumentException(SR.GetString(SR.ParameterCollection_NotParameter), "o");
}
///
/// Removes a Parameter from the collection.
///
public void Remove(Parameter parameter) {
((IList)this).Remove(parameter);
}
///
/// Removes a Parameter from the collection at a given index.
///
public void RemoveAt(int index) {
((IList)this).RemoveAt(index);
}
///
/// Marks a Parameter as dirty so that it will record its entire state into view state.
///
protected override void SetDirtyObject(object o) {
((Parameter)o).SetDirty();
}
///
/// Updates all parameter values to possibly raise a ParametersChanged event.
///
public void UpdateValues(HttpContext context, Control control) {
foreach (Parameter param in this) {
param.UpdateValue(context, control);
}
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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