Hi Mohammad,
Greetings from Syncfusion support,
We have validated your reported query. There is no built-in support for Minimize and Maximize in the SfDialog. In Blazor, we will check the possibilities of achieving the requirement using the JSInterop concept.
We would like you like you to confirm us, whether we can provide sample using the JSInterop concept in blazor for your requirement using the SfDialog ?
Regards,
Indrajith