# DialogService in Class library project

**URL:** <https://forum.radzen.com/t/dialogservice-in-class-library-project/15800>\
**Category:** Radzen.Blazor Components\
**Created:** [November 29, 2023, 12:39pm UTC](https://forum.radzen.com/t/dialogservice-in-class-library-project/15800 "2023-11-29T12:39:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![bikash\_paudyal](https://forum.radzen.com/user_avatar/forum.radzen.com/bikash_paudyal/32/15518_2.png) [@bikash\_paudyal](https://forum.radzen.com/u/bikash_paudyal)\
**Post date:** [November 29, 2023, 12:39pm UTC](https://forum.radzen.com/t/dialogservice-in-class-library-project/15800/1 "2023-11-29T12:39:23Z")

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How to use DialogService in class library project in blazor component ? Because there is no Startup.cs or Program.cs file in class library project.

 ![CaptureError](https://forum.radzen.com/uploads/default/original/3X/8/d/8d27de82c4a8bc4e49e06528a45e60b64c9e5a70.png)

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**Author:** ![korchev](https://forum.radzen.com/user_avatar/forum.radzen.com/korchev/32/4_2.png) [@korchev](https://forum.radzen.com/u/korchev)\
**Post date:** [November 29, 2023, 1:11pm UTC](https://forum.radzen.com/t/dialogservice-in-class-library-project/15800/2 "2023-11-29T13:11:02Z")

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Hi @bikash_paudyal,

The DialogService should be registered in the application which consumes the class library.