protected override object ExecuteBind(BindingContext context)
{
Type keyType = typeof(TKey);
Type valueType = typeof(TValue);
if (!keyType.IsSimple())
{
throw Error.UnsupportedDictionaryType(context.ModelType);
}
Dictionary <TKey, TValue> convertedValues = new Dictionary <TKey, TValue>();
foreach (string kvp in context.ValueProvider.Keys)
{
string formKey = GetItemKey(kvp, context.ModelName);
if (String.IsNullOrEmpty(formKey))
{
continue;
}
string keyField = CreateSubMemberName(context.ModelName, "key");
IValueProvider keyProvider = new DictionaryValueProvider(
CreateKeyBindingData(keyField, formKey));
BindingContext keyContext = new BindingContext(context, keyType,
keyField, keyProvider, context.ModelState);
object boundKey = KeyBinder.Bind(keyContext);
if (boundKey == null)
{
continue;
}
TKey key = Converter.ChangeType <TKey>(boundKey);
if (!valueType.IsSimple() && convertedValues.ContainsKey(key))
{
continue;
}
string formValue = CreateSubMemberName(context.ModelName, formKey);
BindingContext valueContext = new BindingContext(context, valueType,
formValue, context.ValueProvider, context.ModelState);
TValue value = ValidateValue(context, formValue, ValueBinder.Bind(valueContext));
convertedValues.Add(key, value);
}
IDictionary <TKey, TValue> dictionary = (CreateModelInstance(context) as IDictionary <TKey, TValue>);
if (dictionary == null)
{
return(null);
}
if (convertedValues.Count == 0)
{
return(dictionary);
}
CollectionHelpers.CopyDictionary <TKey, TValue>(dictionary, convertedValues);
return(dictionary);
}