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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(294.40000000000003, 83%, 38%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMR%3C/text%3E%3C/svg%3E)
I created a class with a Boolean. When I instantiate it, my Boolean is true. I don't understand. I thought the default for Boolean was false ! Any ideas ?
Right now, I'm forced to use this attribute :
[
DefaultValue(false)]
public bool IsDelete { get; set; }
How did you check it? How to reproduce the problem?
It's an API and there's no constructor nor anything setting the value before looking at it in Swagger. In this example I commented out the attribute to set it to false by default
Maybe you should check it without that tool, and also find a dedicated forum.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(211.20000000000002, 61%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBS%3C/text%3E%3C/svg%3E)
you are looking at swagger's display of sample data. it always sets booleans to true, just as it it uses now for DateTime (which default to minimum)
Can you lead me to where Swagger sets Boolean to true ?
swagger-ui is typically a javascript react based ui. the webapi server returns the schema, not sample data. the swagger-ui generates the sample data from the schema. the schema is language independent and would know nothing about C# defaults.
swagger-ui source:
See bool (C# reference): "The default value of the bool type is false"
There must be code setting the property to True
After all these years programming C#, this is really what I think but since I have this problem I honestly don't understand.
No constructors, nothing setting this value anywhere and it's a totally new code that does nothing yet. I just ran the app and saw the TRUE value in Swagger as shown in response to Viorel-1
again the swagger-ui code is javascript not C#.
in javascript variables/properties default to undefined. undefined is not valid json, so swagger-ui must set every json property.