Cannot Attach and Edit Object Data from C# Winform

[Anonymous]

Dear Better Experienced Collegues,

I am having a serious issue attaching object data to an object. I am providing the tableName from another part of the program as a string, the name of the field which is being converted from a hashtable into the position of the field in the record [will change this later], and the value is coming from a combo box in a winform. Please note that I have locked the drawing early in this procedure, based on the information in a post I felt may have been related. I am not handling the exception as I am stepping through the code with VS2010 Expression for C#, but will handle any exceptions later. Just to be clear, I am using Autodesk Map 2011. Here is my c# (c sharp) code:

public static bool CommandAddData(string tableName, string updateField, string cmbValue)
        {
            Document dwg = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
            using (DocumentLock lk = dwg.LockDocument())
            {
                Tables tables = HostMapApplicationServices.Application.ActiveProject.ODTables;
                ObjectId[] selObjs = SLiiCGIS.GISFunctions.SelectionFunc.selectedObjects.Value.GetObjectIds();
                // Get Application Level Table Definition for object data
                Hashtable masterTableDef = SLiiCGIS.ApplicationVariables.tableDefinition;

                if (selObjs.Length > 0)
                {
                    foreach (ObjectId sel in selObjs)
                    {
                        Autodesk.Gis.Map.ObjectData.Table table = tables[tableName];
                        using (Records rcds = tables.GetObjectRecords(0, sel, Autodesk.Gis.Map.Constants.OpenMode.OpenForWrite, false))
                            if (rcds.Count == 0)
                            {
                                try
                                {
                                    // Create and initialize an record
                                    Autodesk.Gis.Map.ObjectData.Record tblRcd = Autodesk.Gis.Map.ObjectData.Record.Create();
                                    table.InitRecord(tblRcd);

                                    int tblPos = Convert.ToInt32(masterTableDef[updateField]);

                                    MapValue val = tblRcd[tblPos]; // String type
                                    val.Assign(cmbValue);

                                    table.AddRecord(tblRcd, sel);

                                    return true;
                                }
                                catch (MapException)
                                {
                                    return false;
                                }
                            }
                            else
                            {
                                try
                                {
                                    foreach (Autodesk.Gis.Map.ObjectData.Record tblRcd in rcds)
                                    {
                                        // Create and initialize an record
                                        int tblPos = (int)masterTableDef[updateField];

                                        MapValue val = tblRcd[tblPos]; // String type
                                        val.Assign(cmbValue);

                                        return true;
                                    }
                                }
                                catch (MapException)
                                {
                                    return false;
                                }
                            }

                    }
                    return true;
                }
                else
                {
                    return false;
                }
            }
        }

Almost directly out of the book (AutoCAD Map 3D SDK | ObjectARX .NET Developer's Guide | Object Data | Attaching Object Data). Any assistance would be greatly appreciated.

[Anonymous · Accepted solution]

Please try this code...

        #region Add Or Update Object Data Record
        public static bool AddOrUpdOD(string TableName, ObjectId objectID, string columnName, string value)
		{
			Autodesk.Gis.Map.ObjectData.Tables tables = Autodesk.Gis.Map.HostMapApplicationServices.Application.ActiveProject.ODTables;
			Autodesk.Gis.Map.ObjectData.Table table = tables[TableName];
			Editor ed = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;
			int recCount = 0;
			try
			{
				using(DocumentLock lk = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.LockDocument())
	      		{
					using(Records rcs = table.GetObjectTableRecords(0, objectID, Autodesk.Gis.Map.Constants.OpenMode.OpenForWrite, false))
					{
						recCount = rcs.Count;
					}
					if(recCount == 0)
					{
						Record Rec = Record.Create();
						table.InitRecord(Rec);
						table.AddRecord(Rec,objectID);
					}
				
					using(Records records = table.GetObjectTableRecords(0, objectID, Autodesk.Gis.Map.Constants.OpenMode.OpenForWrite, false))
					{
						if(records.Count == 0)
						{
							ed.WriteMessage("\nObject Data attachment failed.");
							records.Dispose();
							return false;
						}
						
						foreach(Record Recd in records)
						{
							for(int i = 0; i < Recd.Count; i++)
							{
								FieldDefinitions tblDefs = table.FieldDefinitions;
								FieldDefinition column = null;
								column = tblDefs[i];
								if(column.Name.CompareTo(columnName) == 0)
								{
									Recd[i].Assign(value);
									records.UpdateRecord(Recd);
									break;
								}
							}
						}
					}
				}
				return true;
			}
			catch(Autodesk.Gis.Map.MapException Exp)
			{
				System.Windows.Forms.MessageBox.Show("ERROR:" + Environment.NewLine + Exp.Message + Environment.NewLine + Exp.StackTrace);
				return false;
			}
        }
    	#endregion

this code works perfectly for me....

Thanks...

Chandan.

[Anonymous]

Hello Chandan,

Thank you very much, for saving my life. I will be analyzing the superiority of your code for at least 30 minutes 🙂

[Anonymous]

Hi,

Could you please tell me how you are assigning the value to the ObjecID

I am trying to attach a record to the Acadline using

odTable.AddRecord(oRecord, OBjID) 

Thanks, 

[Daniel.Du]

You may want to select the entity and get the object id using following code snippet:

    Editor AcadEditor = Application.DocumentManager.MdiActiveDocument.Editor;

    PromptSelectionOptions options = new PromptSelectionOptions();

     // Single select mode
    options.SingleOnly = true;
    options.SinglePickInSpace = true;
    options.MessageForAdding = "Select an entity:";
    AcadEditor.WriteMessage("\n Please select an entity to add a record: ");
    PromptSelectionResult result = AcadEditor.GetSelection(options);



    if (result.Status != PromptStatus.OK)
    {
        AcadEditor.WriteMessage("\n User cancelled! ");
        return;
    }

    ObjectId[] ids = result.Value.GetObjectIds();
    if (ids.Length != 1)
    {
        AcadEditor.WriteMessage("\n Invalid selection! ");
        return;
    }

    //you code goes below...
    OBjID = ids[0];
    .....