How to Fix 'Cannot Deserialize JSON Array into Object' Errors?

Troubleshooting JSON Deserialization: Array to Object Conversion

A common issue in JSON deserialization involves attempting to convert a JSON array (like [1, 2, 3]) into a defined object type. This fails because JSON arrays and JSON objects have different structures. JSON objects use key-value pairs (e.g., {"name": "value"}), while arrays are simply ordered lists.

The solution is to either transform the JSON data into a JSON object or adjust your deserialization target to accommodate an array. The most straightforward approach is to deserialize the JSON into a list of the expected object type.

For example, if your JSON array contains multiple RetrieveMultipleResponse objects, you'd use code like this:

var objResponse1 = JsonConvert.DeserializeObject<List<RetrieveMultipleResponse>>(JsonStr);

By using List<RetrieveMultipleResponse>, you specify that you're expecting an array of RetrieveMultipleResponse objects, resolving the deserialization error. This effectively handles the array structure of the incoming JSON data.

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