Asp.Net Web Api 2 – [Frombody] Is Null Top 15 Favorites

If you are experiencing a problem where the [FromBody] attribute is returning null in your ASP.NET Web API 2 project, here are a few things you can try:

1. Ensure that the request payload is in the correct format: [FromBody] is used to bind data from the request body in JSON or XML format. Make sure that the request payload is in the correct format.

2. Check the content type of the request: If the content type of the request is not set to application/json or application/xml, the [FromBody] attribute may not be able to parse the request body. Make sure that the content type of the request is set to the appropriate value.

3. Make sure that the request body is not empty: If the request body is empty, the [FromBody] attribute will return null. Make sure that the request body contains the data that you are trying to bind.

4. Check if the model being bound has default values: If the model being bound has default values, the [FromBody] attribute may not be able to bind the data correctly. Try adding the [DataContract] attribute to the model and adding the [DataMember] attribute to each property that you want to bind.

5. Use a tool like Fiddler or Postman to inspect the request and response: Inspect the request and response using a tool like Fiddler or Postman to see if there are any errors or issues that may be causing the [FromBody] attribute to return null.

6. Check if the model is being bound correctly: If the [FromBody] attribute is still returning null, try binding the data using a different method, such as using the [FromForm] attribute to bind data from form data or the [FromUri] attribute to bind data from query string parameters.

By following these steps, you should be able to diagnose and resolve the issue with the [FromBody] attribute returning null in your ASP.NET Web API 2 project.