Obtain Default Value of an Attribute Definition

[Millerni456]

Hi everyone,

This should hopefully be a straightforward  task in AutoCAD .NET, but I'm having trouble figuring it out.

My objective is to look at all attribute definitions within a block definition, and then store the tags and default values into a dictionary.

So far I've successfully extracted the tag string, yet I cannot find how to access the default value of the attribute definition.

Here is a snippet of code that builds the dictionary of attributes:

//Iterate through all entities in the block definition.
BlockTableRecord blockDefinition = tr.GetObject(blockTable[blockName], OpenMode.ForRead) as BlockTableRecord;
Dictionary<String, String> attributes = new Dictionary<String, String>();
foreach (ObjectId entId in blockDefinition)
{
    Entity entity = tr.GetObject(entId, OpenMode.ForRead) as Entity;
    if (entity != null)
    {   //If the entity is an attribute definition, append its information to the dictionary above.
        if (entity is AttributeDefinition)
        {
            AttributeDefinition attributeDefinition = entity as AttributeDefinition;
            attributes.Add(attributeDefinition.Tag, INSERT ATTRIBUTE'S DEFAULT VALUE HERE);
        }
    }
}

Does anyone know how to retreive the attribute definitions default value?

Thanks much,

Nick

[Millerni456 · Accepted solution]

Solved.

I was testing on bad data earlier in which attribute tags were the same as their default values.  Because of this, I didn't see that my previously correct code was indeed correct.

To obtain the default value, retrieve this property:

AttributeDefintion.TextString