Valued Contributor
Posts: 55
Registered: ‎01-23-2013
Message 1 of 2 (154 Views)
Accepted Solution

Obtain Default Value of an Attribute Definition

154 Views, 1 Replies
03-18-2014 06:04 AM

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,


Valued Contributor
Posts: 55
Registered: ‎01-23-2013
Message 2 of 2 (143 Views)

Re: Obtain Default Value of an Attribute Definition

03-18-2014 06:36 AM in reply to: Millerni456



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:


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