topic I have difficulties in handling API AutoCAD.Net using Dynamic Blocks in .NET Forum

I have difficulties in handling API AutoCAD.Net using Dynamic Blocks

Anonymous — Thu, 19 Jul 2012 14:05:36 GMT

Please, I have difficulties in handling API AutoCAD.Net using Dynamic Blocks. Could you help me? Thanks in advance.
I'm trying to modify the configuration of a given dynamic block. The goal is to access the property Table1 Block Dynamic Block and change its value to an existing one.
You can navigate between the records from Table1 Block? With this code below I have managed to navigate between the dynamic properties of the block and its values, but I can not make the property value set in the block table1.
I tried an example of the link: http://through-the-interface.typepad...blocks/page/3/ however it still fails.
If you have something that can help me I would be very grateful! Attached is a file with dynamic block if you can help me ...

[CommandMethod("getprop")]
static public void GetProps()
{
  Document doc = Application.DocumentManager.MdiActiveDocument; 
  Database db = doc.Database; 
  Editor ed = doc.Editor;
  PromptEntityOptions peo = 
   new PromptEntityOptions("\nSelecione o Bloco: ");
  peo.SetRejectMessage("\nIsso não é um Bloco.");
  peo.AddAllowedClass(typeof(BlockReference), false);
  PromptEntityResult per = ed.GetEntity(peo); 
  if (per.Status != PromptStatus.OK) return;
  ObjectId sourceId = per.ObjectId;
  using (Transaction tr = db.TransactionManager.StartTransaction())
  {
    BlockReference brF = 
     (BlockReference)tr.GetObject(sourceId, OpenMode.ForRead);
    if (brF != null && brF.IsDynamicBlock) 
     foreach (DynamicBlockReferenceProperty prop in brF.DynamicBlockReferencePropertyCollection)
       ed.WriteMessage(string.Format("\n{0}: {1}: ", prop.PropertyName, prop.Value)); 
       tr.Commit();
  }
}

Thank you!

Re: I have difficulties in handling API AutoCAD.Net using Dynamic Blocks

Hallex — Thu, 19 Jul 2012 16:10:49 GMT

You have to check IsDynamic property for BlockTableRecord before

        [CommandMethod("getprop")]
        static public void GetProps()
        {
            Document doc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
            Database db = doc.Database;
            Editor ed = doc.Editor;
            PromptEntityOptions peo =
             new PromptEntityOptions("\nSelecione o Bloco: ");
            peo.SetRejectMessage("\nIsso não é um Bloco.");
            peo.AddAllowedClass(typeof(BlockReference), false);
            PromptEntityResult per = ed.GetEntity(peo);
            if (per.Status != PromptStatus.OK) return;
            ObjectId sourceId = per.ObjectId;
            using (Transaction tr = db.TransactionManager.StartTransaction())
            {

                BlockReference brF = (BlockReference)tr.GetObject(sourceId, OpenMode.ForRead);
                BlockTableRecord btr = (BlockTableRecord)tr.GetObject(brF.BlockTableRecord, OpenMode.ForRead);
                if (btr != null && btr.IsDynamicBlock)
                {
                    foreach (DynamicBlockReferenceProperty prop in brF.DynamicBlockReferencePropertyCollection)
                        ed.WriteMessage(string.Format("\n{0}: {1}: ", prop.PropertyName, prop.Value));
                    tr.Commit();
                }
            }
        }

~'J'~

Re: I have difficulties in handling API AutoCAD.Net using Dynamic Blocks

Anonymous — Thu, 19 Jul 2012 19:25:12 GMT

Thank you for your attention Hallex.

The real objective is modify the value of the property Block Table1.

prop.Value = 3 for example

prop.Value= 4 for example or 5, 6, ....

this link show example of how modify this value, but Iam not to apply in my code.

http://through-the-interface.typepad.com/through_the_interface/2009/03/painting-properties-between-dynamic-autocad-blocks-using-net.html

Thanks for your attention.

Re: I have difficulties in handling API AutoCAD.Net using Dynamic Blocks

Hallex — Thu, 19 Jul 2012 21:26:24 GMT

I tried to get values from your drawing,

seems to me next code is working:

       [CommandMethod("getprop")]
        static public void GetProps()
        {
            Document doc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
            Database db = doc.Database;
            Editor ed = doc.Editor;
            PromptEntityOptions peo =
             new PromptEntityOptions("\nSelecione o Bloco: ");
            peo.SetRejectMessage("\nIsso não é um Bloco.");
            peo.AddAllowedClass(typeof(BlockReference), false);
            PromptEntityResult per = ed.GetEntity(peo);
            if (per.Status != PromptStatus.OK) return;
            ObjectId sourceId = per.ObjectId;
            using (Transaction tr = db.TransactionManager.StartTransaction())
            {

                BlockReference brF = (BlockReference)tr.GetObject(sourceId, OpenMode.ForRead);
                if (brF.IsDynamicBlock){
                BlockTableRecord btr = (BlockTableRecord)tr.GetObject(brF.DynamicBlockTableRecord, OpenMode.ForRead);
                if (btr != null && btr.IsDynamicBlock)
                {
                    foreach (DynamicBlockReferenceProperty prop in brF.DynamicBlockReferencePropertyCollection)
                    {
                        ed.WriteMessage(string.Format("\n{0}: {1}: ", prop.PropertyName, prop.Value));
                        if (prop.PropertyName == "COMPRIMENTO")
                        {
                            prop.Value = 1500.0;
                        }
                        if (prop.PropertyName == "Distance2")
                        {
                            prop.Value = 900.0;
                        }
                        // ---   change other stuffs here   ---  //
                    }
                }
                    tr.Commit();
                }
            }
        }


//Block Table1: 12:
//COMPRIMENTO: 3000:
//Distance2: 118.110236220472:
//Origin: (-1.20792265079217E-13,200,0):
//Visibility1: SEM:
//Desloc: 28.3464566929134:
//Origin: (0,0,0):
//Multi: 121.259842519685:
//Origin: (720,-30.0000000000001,0):
//PISO: 1/4":

~'J'~

Re: I have difficulties in handling API AutoCAD.Net using Dynamic Blocks

Anonymous — Fri, 20 Jul 2012 12:43:58 GMT

Hello,Hallex

The example you sent me worked perfectly. Thank you!

However, when I try to change: if (prop.PropertyName == "Block Table1") {prop.Value = 6;}

generates an error: e.Mensagem: eInvalidInput,

e.StackTrace: at Autodesk.AutoCAD.DatabaseServices.DynamicBlockReferenceProperty.set_Value (Object Value) at ClassLibrary1.Class1.GetProps ().

I would like to change my Dynamic Block by setting the value of the "Block Table1"

for example:

if (prop.PropertyName == "Block Table1") {prop.Value = 6;}

thanks for the help and attention!!

Re: I have difficulties in handling API AutoCAD.Net using Dynamic Blocks

Hallex — Fri, 20 Jul 2012 13:28:32 GMT

I have never worked with BlockTable, but I will

to try this way,

Later,

~'J'~

Re: I have difficulties in handling API AutoCAD.Net using Dynamic Blocks

Anonymous — Fri, 20 Jul 2012 14:10:36 GMT

Ok thank you very much. See this example that I found in LISP program. the program does exactly what I need, but I would like do in C##.NET program.

;(GetBlockValue "Block Table1" 2)
(defun GetBlockValue (prop value)												       
	(vl-load-com)												   	               
      	(setq block (entlast)) 	      											      	       
      	(vl-some 
		(function (lambda ( _prop ) 
			(if (eq prop (strcase (vla-get-propertyname _prop)))
				(progn	
					(vla-put-value _prop (vlax-make-variant value (vlax-variant-type (vla-get-value _prop))))
					value
				)
			)
		)
	)
	(vlax-invoke (vlax-ename->vla-object Block) 'GetDynamicBlockProperties))
)

Re: I have difficulties in handling API AutoCAD.Net using Dynamic Blocks

Hallex — Fri, 20 Jul 2012 18:47:37 GMT

Sorry this is out of my skills,

I didn't know how to rich at Block Table rows

using c#

Re: I have difficulties in handling API AutoCAD.Net using Dynamic Blocks

Anonymous — Mon, 23 Jul 2012 10:35:37 GMT

Hallex,

Thanks for your attention.

Re: I have difficulties in handling API AutoCAD.Net using Dynamic Blocks

Marat.Mirgaleev — Wed, 01 Aug 2012 17:47:09 GMT

Márcio,

I suspect the "Block Table1" property cannot be assigned with 6 (integer). Please, inspect its type in your code or in the debugger - prop.PropertyTypeCode, it is a value from this enumeration (described in the ObjectARX Reference Guide):

enum DwgDataType {
kDwgNull = 0,
kDwgReal = 1,
kDwgInt32 = 2,
kDwgInt16 = 3,
kDwgInt8 = 4,
kDwgText = 5,
kDwgBChunk = 6,
kDwgHandle = 7,
kDwgHardOwnershipId = 8,
kDwgSoftOwnershipId = 9,
kDwgHardPointerId = 10,
kDwgSoftPointerId = 11,
kDwg3Real = 12,
kDwgInt64 = 13,
kDwgNotRecognized = 19
};