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namespace System.Web.ModelBinding {
using System.Collections.Generic;
public sealed class KeyValuePairModelBinder<TKey, TValue> : IModelBinder {
private ModelMetadataProvider _metadataProvider;
internal ModelMetadataProvider MetadataProvider {
get {
if (_metadataProvider == null) {
_metadataProvider = ModelMetadataProviders.Current;
}
return _metadataProvider;
}
set {
_metadataProvider = value;
}
}
public bool BindModel(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext) {
ModelBinderUtil.ValidateBindingContext(bindingContext, typeof(KeyValuePair<TKey, TValue>), true /* allowNullModel */);
TKey key;
bool keyBindingSucceeded = KeyValuePairModelBinderUtil.TryBindStrongModel<TKey>(modelBindingExecutionContext, bindingContext, "key", MetadataProvider, out key);
TValue value;
bool valueBindingSucceeded = KeyValuePairModelBinderUtil.TryBindStrongModel<TValue>(modelBindingExecutionContext, bindingContext, "value", MetadataProvider, out value);
if (keyBindingSucceeded && valueBindingSucceeded) {
bindingContext.Model = new KeyValuePair<TKey, TValue>(key, value);
}
return keyBindingSucceeded || valueBindingSucceeded;
}
}
}
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