Customizing Dump in a DataContext package

Sirozha1337 · March 13

Hi, I'm having an issue with the ToDump function inside a DataContext package. I'm creating a static method as per documentation but it doesn't seem to be called and the output does not get formatted the way I want it to.

Example:

public sealed class MongoDriver : DynamicDataContextDriver
{
        public static object ToDump(object input)
        {
            var document = input as BsonDocument;
            return document != null ? BsonTypeMapper.MapToDotNetValue(document) : input;
        }

        // unrelated code here
}

Is there something I'm missing or is this a limitation of the DataContext?

i2van · March 13

static object ToDump(object input) should be in Program context and not in class, (example).

It should be member method in your case, (example).

JoeAlbahari · March 14

The static ToDump method applies to scripts and My Extensions - not drivers.

With drivers, you instead override the PreprocessObjectToWrite method. This is described in the documentation:
https://www.linqpad.net/Extensibility.aspx

Sirozha1337 · March 14

@JoeAlbahari said:
The static ToDump method applies to scripts and My Extensions - not drivers.

With drivers, you instead override the PreprocessObjectToWrite method. This is described in the documentation:
https://www.linqpad.net/Extensibility.aspx

Oh, I see. Thank you, Joseph!

For those that might come after, I've achieved what I wanted with just a small modification of my code:

public sealed class MongoDriver : DynamicDataContextDriver
{
        public override void PreprocessObjectToWrite(ref object objectToWrite, ObjectGraphInfo info)
        {
            var document = objectToWrite as BsonDocument;
            if (document != null)
            {
                objectToWrite = BsonTypeMapper.MapToDotNetValue(document);
                return;
            }
        }

        // unrelated code here
}

Customizing Dump in a DataContext package

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