Editor.GetSelection and PromptSelectionOptions

[manohar2375]

Hi,

Good morning.

I am using Editor.GetSelection method with PromptSelectionOptions object. Because i want to select only one object at each click on the dwg file then read the data of selected object. Below properties are assigned to PromptSelectionOptions object.

private PromptSelectionResult acSSPrompt = null;

PromptSelectionOptions psoOptions = new PromptSelectionOptions();
psoOptions.SingleOnly = true;
psoOptions.SinglePickInSpace = true;

acSSPrompt = m_acad_doc.Editor.GetSelection(psoOptions);

My requirement is each click(Selectiion) read data from selected object and stored in another array list for other process.

My problem is until 128 clicks(Selectiions) on dwg file getting data from acSSPrompt object and stored in another array list.
But after 128 clicks then getting below error from acSSPrompt object.

acSSPrompt.Status is Error
acSSPrompt.Value is null.

Could you please help me.

Thanks in Advance.

Regards,
Manohar.

[manohar2375]

Hi All,

Could you please help me anyone.

Thanks in Advance.

Regards,

Manohar.

[manohar2375]

Hi All, Could you please help me anyone. Thanks in Advance. Regards, Manohar.

[kerry_w_brown]

Perhaps you should post a complete sample to demonstrate your issue.

[nagamalliv]

[CommandMethod("ClearPickFirst", CommandFlags.UsePickSet |

                CommandFlags.Redraw | CommandFlags.Modal)]

static public void ClearPickFirst()

{

    Document doc = Application.DocumentManager.MdiActiveDocument;

    Editor ed = doc.Editor;

    try

    {

        PromptSelectionResult result = ed.SelectImplied();

        if (result.Status != PromptStatus.OK)

            return;

        SelectionSet ss = result.Value;

        ObjectId[] ids = ss.GetObjectIds();

        ed.WriteMessage("Pick first has " +

                    ids.Length.ToString() + " entities");

        ObjectId[] newIds = new ObjectId[0];

        ed.SetImpliedSelection(newIds);

    }

    catch (System.Exception ex)

    {

        ed.WriteMessage(ex.Message);

    }

}

[kerry_w_brown]

---

@nagamalliv wrote:

[CommandMethod("ClearPickFirst", CommandFlags.UsePickSet |

                CommandFlags.Redraw | CommandFlags.Modal)]

static public void ClearPickFirst()

{

    Document doc = Application.DocumentManager.MdiActiveDocument;

    Editor ed = doc.Editor;

    try

    {

        PromptSelectionResult result = ed.SelectImplied();

        if (result.Status != PromptStatus.OK)

            return;

        SelectionSet ss = result.Value;

        ObjectId[] ids = ss.GetObjectIds();

        ed.WriteMessage("Pick first has " +

                    ids.Length.ToString() + " entities");

        ObjectId[] newIds = new ObjectId[0];

        ed.SetImpliedSelection(newIds);

    }

    catch (System.Exception ex)

    {

        ed.WriteMessage(ex.Message);

    }

}

---

Hi Malli,

What does that code represent ??

The functionality appears to differ from the original posters problem.

Regards,

[manohar2375]

Hi KerryBrown,

Thanks for your response.

Could you please see the below sample code:

public bool SelectBlock(string sStartNumber, bool bStartToRenumbering, out string err_msg)
{
bool bSelectBlock = true;
err_msg = "";
string sResult = "";
Database acCurDb = m_acad_doc.Database;
SelectionSet acSSet = null;
string sSelectedBlk_FixtureLocID_AttVal = "";
string sFixture_Code_Val = "";
PromptSelectionOptions psoOptions = new PromptSelectionOptions();
psoOptions.SingleOnly = true;
psoOptions.SinglePickInSpace = true;

//Clear Dictionary of Selected Block list
dicSelected_FixtureType_List.Clear();
acSSPrompt = null;
//This is the filter for blockreferences
//SelectionFilter Filter = new SelectionFilter(new TypedValue[] { new TypedValue(0, "INSERT") });
bool bStopBlkSelection = false;
Autodesk.AutoCAD.Internal.Utils.SetFocusToDwgView();
using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())
{
// Request for objects to be selected in the drawing area
acSSPrompt = m_acad_doc.Editor.GetSelection(psoOptions);

acSSet = acSSPrompt.Value;
if (acSSet != null)
{
iSelectionCount = iSelectionCount + 1;
int icount = acSSet.Count;
// If the prompt status is OK, objects were selected
if (acSSPrompt.Status == PromptStatus.OK)
{
acSSet = acSSPrompt.Value;
// Step through the objects in the selection set
int iSelCount = acSSet.Count;
string sNewFixtureCode = "";

foreach (SelectedObject acSSObj in acSSet)
{
// Check to make sure a valid SelectedObject object was returned
if (acSSObj != null)
{
DBObject objDB = acTrans.GetObject(acSSObj.ObjectId, OpenMode.ForRead);
if (objDB is BlockReference)
{
Entity acEnt = acTrans.GetObject(acSSObj.ObjectId, OpenMode.ForRead) as Entity;
BlockReference blkRef = acEnt as BlockReference;
long lBlkObjHandle = blkRef.Handle.Value;

ObjectId lBlkObjID = blkRef.Id;

bool bFixtureCodeFound = false;
string sFixtureTypeCode = "";
string sFixtureCodeMaxSequenceNo = "";
string sMaxFixtureLocID = "";
using (DocumentLock docLock = m_acad_doc.LockDocument())
{
if (clsFixtureXrecordeObj.IsThisBlockHasXrecord(objDB.Id))
{
bFixtureCodeFound = clsFixtureXrecordeObj.readSpecifiedXrecord(objDB.Id, clsPublicVariables.sFixture_Code, out sFixture_Code_Val, out inner_table);
if (bFixtureCodeFound == true)
{
if (sFixture_Code_Val != "")
{
bool sLoc_Att_Val = clsFixtureXrecordeObj.readSpecifiedXrecord(objDB.Id, clsPublicVariables.sFixture_Location_ID, out sSelectedBlk_FixtureLocID_AttVal, out inner_table);
//Checking Fixture Code and Location ID
if (sSelectedBlk_FixtureLocID_AttVal != "")
{
if(sSelectedBlk_FixtureLocID_AttVal.Substring(0,2) != sFixture_Code_Val.Substring(2,2))
{
sSelectedBlk_FixtureLocID_AttVal = sFixture_Code_Val.Substring(2, 2) + sSelectedBlk_FixtureLocID_AttVal.Substring(2, 3);
}
}
if (sSelectedBlk_FixtureLocID_AttVal.Trim() == "")
{
//getting Fixture type from Fixture Code.
sNewFixtureCode = sFixture_Code_Val.Substring(2, 2);
bool bGenerate_update = Generate_Update_Loc_ID(sNewFixtureCode, sStartNumber, blkRef, lBlkObjID, bStartToRenumbering, sSelectedBlk_FixtureLocID_AttVal, out err_msg);
if (bGenerate_update == false)
{
bSelectBlock = false;
break;
}
}
else
{
if (bStartToRenumbering == true && sStartNumber != "")
{
//Getting Fixture Type Code
sNewFixtureCode = sFixture_Code_Val.Substring(2, 2);
bool bChkBoxStatus = false;
bool bStatus = false;
if (clsPublicVariables.bCheckBoxbChkBoxOverWriteScreen == false)
{
//displaying overwrite screen.
bStatus = DisplayLocIDOverWriteScreen(ref bChkBoxStatus, sNewFixtureCode);
}
else
{
//Wantendly setting 'TRUE' because already checked 'CHECKBOX' and selected 'YES' button on overwrite screen.
bStatus = true;
}
//Checking the 'YES' and 'NO' options on LOC id Over write screen
if (bStatus == true)
{
bSelectBlock = Generate_Update_Loc_ID(sNewFixtureCode, sStartNumber, blkRef, lBlkObjID, bStartToRenumbering, sSelectedBlk_FixtureLocID_AttVal, out err_msg);
if (bSelectBlock == false)
{
bSelectBlock = false;
break;
}

}
else
{
//Display Attributes on Renumbering screen
ShowAttributesOnUserForm("", "", "", "", "");
}
}
else
{
//Getting Max Sequence number from Dictionary.
sFixtureTypeCode = sSelectedBlk_FixtureLocID_AttVal.Substring(0, 2);
sFixtureCodeMaxSequenceNo = dicExist_Fixture_Types[sFixtureTypeCode];
sMaxFixtureLocID = sFixtureTypeCode + sFixtureCodeMaxSequenceNo;
string sErr_msg = "Location ID to the Fixture is already assigned" + Environment.NewLine + " To change the Location ID explicitly, Please use the Start renumbering option.";
//Display Attributes on Renumbering screen
ShowAttributesOnUserForm("", sSelectedBlk_FixtureLocID_AttVal, "", sErr_msg, sMaxFixtureLocID);
clsMessage.ShowInformationMessage(sErr_msg);
ShowAttributesOnUserForm("", "", "", "", "");
bFixtureCodeFound = true;
}
}

}
else
{
sResult = "Not Assigned : Not an IFP Block.";
//Display Attributes on Renumbering screen
ShowAttributesOnUserForm("", "", "", sResult, "");
}
}
}
else
{
sResult = "Not Assigned : Not an IFP Block.";
//Display Attributes on Renumbering screen
ShowAttributesOnUserForm("", "", "", sResult, "");
}
}
}
}
}
}
}
else
{

}
//checking the Mouse selection on floor plan wheather Error(Right Click) or Not
if (acSSPrompt.Status == PromptStatus.Cancel)
{
bStopBlkSelection = true;
//Display Attributes on Renumbering screen
ShowAttributesOnUserForm("", "", "", "","");
}
acTrans.Commit();
acSSPrompt = null;

}
//Checking the Mouse selection on floor plan
if (bStopBlkSelection == false)
{
//Calling again
if (bSelectBlock == true)
{
bSelectBlock = SelectBlock(sStartNumber, bStartToRenumbering, out err_msg);
if (bSelectBlock == false)
{
bSelectBlock = false;
}
}
}
return bSelectBlock;
}

Thanks in Advance.

Regards,

Manohar.

[manohar2375]

Hi Kerry Brown,

I am extremely sorry for the previous whole code, could you please see the below sample code which is having problem to me. After 127 clicks(selections) is not selecting the object, getting the error.

public bool SelectBlock_new1()
{
bool bSelectBlock = true;
Document doc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
Database acCurDb = doc.Database;
SelectionSet acSSet = null;
PromptSelectionOptions psoOptions = new PromptSelectionOptions();
psoOptions.SingleOnly = true;
psoOptions.SinglePickInSpace = true;

acSSPrompt = null;
//bool bStopBlkSelection = false;
Autodesk.AutoCAD.Internal.Utils.SetFocusToDwgView();
using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())
{
acSSPrompt = doc.Editor.GetSelection(psoOptions);
acSSet = acSSPrompt.Value;
if (acSSet != null)
{
bSelectBlock = true;
}
else
{
bSelectBlock = false;
}
if (bSelectBlock == true)
{
bSelectBlock = SelectBlock_new1();
}
}
return true;
}

Thanks in Advance.

Regards,

Manohar.

[nagamalliv]

Hi Manohar,

AutoCAD having a maximum selection sets value, please dispose your selection set by using keyword for selection set. for example use below sample.

var selResult = doc.Editor.GetSelection();

                        using (var selSet = selResult.Value)
                        {
                            /// your code...
                        }

[_gile · Accepted solution]

Hi,

It seems to me the number of active selections is not limited with .NET as it is with COM or AutoLISP (128), but may be the number of nested transaction is limited.

Anyway, the following code seems to work.

        public void SelectionTest()
        {
            var ed = AcAp.DocumentManager.MdiActiveDocument.Editor;
            var pso = new PromptSelectionOptions();
            pso.SingleOnly = true;
            pso.SinglePickInSpace = true;
            PromptSelectionResult psr;
            var ids = new ObjectIdCollection();
            while (true)
            {
                psr = ed.GetSelection(pso);
                if (psr.Status != PromptStatus.OK)
                    break;
                ids.Add(psr.Value[0].ObjectId);
                ed.WriteMessage("\n{0} selected objects", ids.Count);
            }
        }

[manohar2375]

Hi Malli,

Thanks for your code, Now my issue has solved by using your code.

Hi Gilles,

Thanks for your response and your valuable time and code.

Regards,

Manohar.

[BKSpurgeon]

Would the ObjectIdCollection need to be disposed?

https://help.autodesk.com/view/OARX/2022/ENU/?guid=OARX-ManagedRefGuide-Autodesk_AutoCAD_DatabaseSer...

[_gile]

---

@BKSpurgeon  a écrit :
Would the ObjectIdCollection need to be disposed?

---

No, The ObjectId structure does not implement IDisposable (i.e. does not have a Dispose() method).