The System.Text.Json Rigidity Problem. With newer releases of ASP.NET Core, the ASP.NET team has decided to move to System.Text.Json for all JSON serializations and deserializations. Generally, this works pretty well, but you need to be aware of potential pitfalls. Case Sensitivity. By default, System.Text.Json has a case sensitivity flag. Case.
Step 3 – Pass in the custom converter to JsonSerializer. To use the custom converter, add it to JsonSerializerOptions.Converters, and then pass the options into JsonSerializer.Deserialize (), like this: When JsonSerializer runs into the HappenedAt property, it’ll call the custom converter, which will successfully parse the datetime value.
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System.Text.Json.JsonException: The JSON value could not be converted to System.Decimal . Unlike Newtonsoft, there doesn’t seem to be an easy way to set the culture or even specify the decimal format (at least not at the time of this writing). Therefore, you have to write a custom converter that handles converting the quoted decimal value using the specified.
Re: Value of Type 'Date' Cannot Be Converted to 'System.TimeSpan'. Feb 10, 2010 01:55 PM. | MetalAsp.Net | LINK. You can get a timespan object from a date with this: TimeSpan ts = new TimeSpan (YourDateTimeObject.Ticks); Now you can use DateTimeObject2.Add (ts); This should give you enough details to change your code.
Choose one of the following approaches: Add an instance of the converter class to the JsonSerializerOptions.Converters collection. Apply the [JsonConverter] attribute to the properties that require the custom converter. Apply the [JsonConverter] attribute to a class or a struct that represents a custom value type.
When you’re using System.Text.Json to deserialize JSON that contains the string representation of an enum, you get the following exception: System.Text.Json.JsonException: The JSON value could not be converted to <Enum Type> The following JSON would cause this exception. Conference is an enum, and this is using the string representation. .net core WebApi uses [FromBody] JObject to receive data Test with postman. After searching for information, I found that the package ASP.NETCORE 3.1 WEBAPI Time Types of Formats have been reported to the JSON Value Could Not Be Converted to System.Datetime.
Using Json.NET converters within the .NET Core 3.0 runtime fails. However in .NET Core 2.2 or .NET Framework 4.8 it works fine. It seems like some "Type" is not coming through correctly..NET Core versions are both using the same .NET Standard 2.0 Json.NET lib. This makes me think its a .NET runtime issue of some kind or another but I can't be sure.
User379720387 posted. The JSON value could not be converted to BtServer.Pages.RecordDetail+MyRecordDetails. Path: $ | LineNumber: 0 | BytePositionInLine: 1.
