39 lines
1.4 KiB
C#
39 lines
1.4 KiB
C#
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namespace System.Web.Mvc {
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Dynamic;
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internal sealed class DynamicViewDataDictionary : DynamicObject {
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private readonly Func<ViewDataDictionary> _viewDataThunk;
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public DynamicViewDataDictionary(Func<ViewDataDictionary> viewDataThunk) {
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_viewDataThunk = viewDataThunk;
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}
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private ViewDataDictionary ViewData {
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get {
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ViewDataDictionary viewData = _viewDataThunk();
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Debug.Assert(viewData != null);
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return viewData;
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}
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}
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// Implementing this function improves the debugging experience as it provides the debugger with the list of all
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// the properties currently defined on the object
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public override IEnumerable<string> GetDynamicMemberNames() {
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return ViewData.Keys;
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}
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public override bool TryGetMember(GetMemberBinder binder, out object result) {
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result = ViewData[binder.Name];
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// since ViewDataDictionary always returns a result even if the key does not exist, always return true
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return true;
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}
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public override bool TrySetMember(SetMemberBinder binder, object value) {
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ViewData[binder.Name] = value;
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// you can always set a key in the dictionary so return true
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return true;
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}
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}
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}
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