cannot find type or namespace "SafeIntDictionary"

While I compile PexExtension, i run into an error in line linecannot find type or namespace "SafeIntDictionary"

SafeIntDictionary<int> undoMarkers = new SafeIntDictionary<int>();

The compiler shows "error 6 cannot find type or namespace "SafeIntDictionary" (whether lack of using instructor or assembly?)

I compile it using visual studio 2010.

错误 6 未能找到类型或命名空间名称“SafeIntDictionary”(是否缺少 using 指令或程序集引用?) E:\docs\Colected papers\Loop Invariant\tools\PexExtensions\Sources\DySy\Engine\DySyPathAnalyzer.cs 257 13 DySy (DySy\DySy)

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2012-01-30 Wang Yisong

I assume you're trying to use the ExtendedRefection collection from 'Microsoft.ExtendedReflection.Collections'. Did you include the using statement? ('using Microsoft.ExtendedReflection.Collections;') – 2012-01-30 03:29:26

What namespace does this come from? Do you have it declared in a using statement in that code file? Also, do you have it added as a Reference in your project? If both of those requirements are not met, you will receive an error like you have.

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2012-01-30 03:28:11

cannot find type or namespace "SafeIntDictionary"

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