Property of type double is parsed to decimal

Author: rwb196884Created Aug 20, 2026Updated Aug 20, 2026

Updated tools package swashbuckle.aspnetcore.cli from 6.4.0 to 10.1.7.

A C# ASP.NET WebAPI project writes a swagger file including

          "Expenses": {
            "minimum": 0,
            "type": "number",
            "description": "Expenses",
            "format": "double",
            "nullable": true
          },

for a property of type Nullable<double> that has attribute

        [Range(0, double.MaxValue)]

The generated JSON after the update now includes

            "maximum": 1.7976931348623157E+308,

But this causes openapi2csclientto fail saying

Newtonsoft.Json.JsonReaderException: Input string '1.7976931348623157E+308' is not a valid decimal.

Source: RicoSuter/NSwag

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