If you already have a dynamic block definition created manually, you can use the .NET API to insert it and modify its dynamic properties:
public void ModifyDynamicBlockProperty(BlockReference br, string propertyName, object newValue) // Ensure the block reference is dynamic if (br.IsDynamicBlock) // Fetch the dynamic property collection DynamicBlockReferencePropertyCollection props = br.DynamicBlockReferencePropertyCollection; foreach (DynamicBlockReferenceProperty prop in props) // Match property name and ensure it isn't read-only if (prop.PropertyName.Equals(propertyName, StringComparison.OrdinalIgnoreCase) && !prop.ReadOnly) prop.Value = newValue; break; Use code with caution. autocad block net
Before writing code, you must understand how AutoCAD stores blocks in its database. The architecture relies on a clear separation between the definition of a block and its visual instances. If you already have a dynamic block definition
ed.WriteMessage($"\nBlock 'blockName' created successfully."); autocad block net
tr.Commit();