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namespace System.Web.ModelBinding {
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
[Serializable]
public class ModelStateDictionary : IDictionary<string, ModelState> {
private readonly Dictionary<string, ModelState> _innerDictionary = new Dictionary<string, ModelState>(StringComparer.OrdinalIgnoreCase);
public ModelStateDictionary() {
}
public ModelStateDictionary(ModelStateDictionary dictionary) {
if (dictionary == null) {
throw new ArgumentNullException("dictionary");
}
foreach (var entry in dictionary) {
_innerDictionary.Add(entry.Key, entry.Value);
}
}
public int Count {
get {
return _innerDictionary.Count;
}
}
public bool IsReadOnly {
get {
return ((IDictionary<string, ModelState>)_innerDictionary).IsReadOnly;
}
}
public bool IsValid {
get {
return Values.All(modelState => modelState.Errors.Count == 0);
}
}
public ICollection<string> Keys {
get {
return _innerDictionary.Keys;
}
}
public ModelState this[string key] {
get {
ModelState value;
_innerDictionary.TryGetValue(key, out value);
return value;
}
set {
_innerDictionary[key] = value;
}
}
public ICollection<ModelState> Values {
get {
return _innerDictionary.Values;
}
}
public void Add(KeyValuePair<string, ModelState> item) {
((IDictionary<string, ModelState>)_innerDictionary).Add(item);
}
public void Add(string key, ModelState value) {
_innerDictionary.Add(key, value);
}
public void AddModelError(string key, Exception exception) {
GetModelStateForKey(key).Errors.Add(exception);
}
public void AddModelError(string key, string errorMessage) {
GetModelStateForKey(key).Errors.Add(errorMessage);
}
public void Clear() {
_innerDictionary.Clear();
}
public bool Contains(KeyValuePair<string, ModelState> item) {
return ((IDictionary<string, ModelState>)_innerDictionary).Contains(item);
}
public bool ContainsKey(string key) {
return _innerDictionary.ContainsKey(key);
}
public void CopyTo(KeyValuePair<string, ModelState>[] array, int arrayIndex) {
((IDictionary<string, ModelState>)_innerDictionary).CopyTo(array, arrayIndex);
}
public IEnumerator<KeyValuePair<string, ModelState>> GetEnumerator() {
return _innerDictionary.GetEnumerator();
}
private ModelState GetModelStateForKey(string key) {
if (key == null) {
throw new ArgumentNullException("key");
}
ModelState modelState;
if (!TryGetValue(key, out modelState)) {
modelState = new ModelState();
this[key] = modelState;
}
return modelState;
}
public bool IsValidField(string key) {
if (key == null) {
throw new ArgumentNullException("key");
}
// if the key is not found in the dictionary, we just say that it's valid (since there are no errors)
return DictionaryHelpers.FindKeysWithPrefix(this, key).All(entry => entry.Value.Errors.Count == 0);
}
public void Merge(ModelStateDictionary dictionary) {
if (dictionary == null) {
return;
}
foreach (var entry in dictionary) {
this[entry.Key] = entry.Value;
}
}
public bool Remove(KeyValuePair<string, ModelState> item) {
return ((IDictionary<string, ModelState>)_innerDictionary).Remove(item);
}
public bool Remove(string key) {
return _innerDictionary.Remove(key);
}
public void SetModelValue(string key, ValueProviderResult value) {
GetModelStateForKey(key).Value = value;
}
public bool TryGetValue(string key, out ModelState value) {
return _innerDictionary.TryGetValue(key, out value);
}
#region IEnumerable Members
IEnumerator IEnumerable.GetEnumerator() {
return ((IEnumerable)_innerDictionary).GetEnumerator();
}
#endregion
}
}
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