Can DbParameter instance of same name and type be shared with multiple DbCommand instances?

Is it efficient or possible to share same DbParameter object wi开发者_JAVA技巧th multiple commands?

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No, One cannot. A quick check gave runtime exception.

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In general, if a class is mutable (ADO.NET parameters are quite definitely mutable), then it's a bad idea to do this.

By contrast, references to immutable classes can be shared between callers without any danger of corrupting data.