Google Protocol Buffers会生成RepeatedField和Map等容器类型，为方便在Visual Studio中进行调试，编写了如下natvis文件，可以保存为pb.natvis，然后放在Visual Studio安装目录下的Common7\Packages\Debugger\Visualizers目录中，如： C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\Packages\Debugger\Visualizers目录；也可以放在用户根目录或者直接放在项目中。

 1<?xml version="1.0" encoding="utf-8"?>
 2
 3<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
 4	<Type Name="google::protobuf::RepeatedField<*>">
 5		<DisplayString>{{ size={current_size_} }}</DisplayString>
 6		<Expand>
 7			<Item Name="[size]" ExcludeView="simple">current_size_</Item>
 8			<Item Name="[capacity]" ExcludeView="simple">total_size_</Item>
 9			<ArrayItems Condition="ptr_.rep != 0">
10				<Size>current_size_</Size>
11				<ValuePointer>($T1*)ptr_.rep->elements</ValuePointer>
12			</ArrayItems>
13		</Expand>
14	</Type>
15	<Type Name="google::protobuf::RepeatedPtrField<*>">
16		<DisplayString>{{ size={current_size_} }}</DisplayString>
17		<Expand>
18			<Item Name="[size]" ExcludeView="simple">current_size_</Item>
19			<Item Name="[capacity]" ExcludeView="simple">total_size_</Item>
20			<ArrayItems Condition="rep_ != 0">
21				<Size>current_size_</Size>
22				<ValuePointer>($T1**)rep_->elements</ValuePointer>
23			</ArrayItems>
24		</Expand>
25	</Type>
26	<Type Name="google::protobuf::Map<*>">
27		<DisplayString>{{size={elements_->num_elements_}}}</DisplayString>
28		<Expand>
29			<CustomListItems MaxItemsPerView="5000" ExcludeView="Test">
30
31				<Variable Name="iBucket" InitialValue="elements_->index_of_first_non_null_" />
32				<Variable Name="pBucket" InitialValue="elements_->table_ == nullptr ? nullptr : ((InnerMap::Node**)elements_->table_)[elements_->index_of_first_non_null_]" />
33				<Variable Name="iBucketIncrement" InitialValue="-1" />
34
35				<Size>elements_->num_elements_</Size>
36				<Loop>
37					<If Condition="pBucket == nullptr">
38						<Exec>iBucket++</Exec>
39						<Exec>iBucketIncrement = __findnonnull(((InnerMap::Node**)elements_->table_) + iBucket, elements_->num_buckets_ - iBucket)</Exec>
40						<Break Condition="iBucketIncrement == -1" />
41						<Exec>iBucket += iBucketIncrement</Exec>
42						<Exec>pBucket = ((InnerMap::Node**)elements_->table_)[iBucket]</Exec>
43					</If>
44					<Item>(((InnerMap::Node*)pBucket)->kv.v_)</Item>
45					<Exec>pBucket = pBucket->next</Exec>
46				</Loop>
47			</CustomListItems>
48		</Expand>
49	</Type>
50</AutoVisualizer>

祝好！