Resolving: Newtonsoft.Json.JsonReaderException: Could not convert string to boolean
Issue Description
Newtonsoft.Json serialization gives error while converting the string to boolean types.
Newtonsoft.Json.JsonReaderException: ‘Could not convert string to boolean: 1. Path ‘[0].ID’, line 1, position 10.’
Resolution
This issue can be resolved by using a few approaches. The simplest approach would be to use a custom JSON converter so as to be able to serialize the required properties as required in the target object.
In the above case, i can create a Custom boolean converter to generate the required serialization objects.
Sample converter used as below,
var result = JsonConvert.SerializeObject(excelasTable);
var generatedType = JsonConvert.DeserializeObject<T>(result, new CustomBooleanJsonConverter());
return (T)Convert.ChangeType(generatedType, typeof(T));
Custom Boolean JSON Converter
Custom Boolean Json Converter created as below which can be passed as the second argument to DeserializeObject method.
JsonConvert.DeserializeObject<T>(result, new CustomBooleanJsonConverter());
Please remember to override two below method,
- ReadJson
- WriteJson
public class CustomBooleanJsonConverter : JsonConverter<bool>
{
public override bool ReadJson(JsonReader reader, Type objectType, bool existingValue, bool hasExistingValue, JsonSerializer serializer)
{
return Convert.ToBoolean(reader.ValueType == typeof(string) ? Convert.ToByte(reader.Value) : reader.Value);
}
public override void WriteJson(JsonWriter writer, bool value, JsonSerializer serializer)
{
serializer.Serialize(writer, value);
}
}
That’s all. The issue is resolved!
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