Topic: Write and read Xrecord

[krkec]

Could someone tell me why it wont work??
I am trying to write and read Xrecord.

Code: [Select]


namespace kec_tools
{
    public partial class Form1 : Form
    {
        #region funkcije
        private bool checkXrecord(String objekt)
        {
            Document mydoc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
            Database madata = mydoc.Database;
            Editor myed = mydoc.Editor;
            using (Transaction trans = madata.TransactionManager.StartTransaction())
            {
                DBDictionary nod = (DBDictionary)trans.GetObject(madata.NamedObjectsDictionaryId, OpenMode.ForRead);
                if (nod.Contains(objekt))
                {
                    return true;
                }
                else
                {
                    return false;
                }

            }
        }

        private void writeXrecord(String txt, int num)
        {

            /*if (checkXrecord("ViskoOPT"))
            {
               
            }*/
            Document mydoc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
            Database madata = mydoc.Database;
            Editor myed = mydoc.Editor;
            using (Transaction trans = madata.TransactionManager.StartTransaction())
            {

                DBDictionary nod = (DBDictionary)trans.GetObject(madata.NamedObjectsDictionaryId, OpenMode.ForWrite);
                Xrecord myXrecord = new Xrecord();
                myXrecord.Data = new ResultBuffer(
                    new TypedValue((int)DxfCode.Text, txt),
                    new TypedValue((int)DxfCode.Int16, num));
                nod.SetAt("ViskoOPT", myXrecord);
                trans.AddNewlyCreatedDBObject(myXrecord, true);
            }
        }

        private void readXrecord()
        {
            Document mydoc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
            Database madata = mydoc.Database;
            Editor myed = mydoc.Editor;
            using (Transaction trans = madata.TransactionManager.StartTransaction())
            {

                DBDictionary nod = (DBDictionary)trans.GetObject(madata.NamedObjectsDictionaryId, OpenMode.ForRead);
                ObjectId myDataId = nod.GetAt("ViskoOPT");

                Xrecord myXrecord = (Xrecord)trans.GetObject(myDataId, OpenMode.ForRead);

                List<TypedValue> polje = new List<TypedValue>(2);
                foreach (TypedValue value in myXrecord.Data)
                {
                    polje.Add(value);
                }
                int a = (int)polje[1].Value;
                String output = (String)polje[0].Value+ a.ToString();
                MessageBox.Show(output);

            }
        }
        #endregion

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            writeXrecord("This works!!!!", 1);
            readXrecord();
        }
    }
}



[Bert]

Was it because you got a 'eLock' voilation in your writeXrecord-method ?

you can solve this by using mydoc.LockDocument() in the right place :
http://www.theswamp.org/index.php?topic=14378.0

Code - Text: [Select]

1. using (DocumentLock @lock = mydoc.LockDocument()) {
2.         using (Transaction trans = madata.TransactionManager.StartTransaction()) {
3.                 // Your code here...
4.         }
5. }

Also your readXrecord cannot find "ViskoOPt" because you did not commit the changes you made in your transaction in your writeXrecord-method.
(Add trans.Commit();)

Code - Text: [Select]

1. private void writeXrecord(String txt, int num)
2. {
3.         Document mydoc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
4.         Database madata = mydoc.Database;
5.         Editor myed = mydoc.Editor;
6.         //lock your document for during this transaction
7.         using (DocumentLock @lock = mydoc.LockDocument()) {
8.                 using (Transaction trans = madata.TransactionManager.StartTransaction()) {
9.                         DBDictionary nod = (DBDictionary)trans.GetObject(madata.NamedObjectsDictionaryId, OpenMode.ForWrite);
10.                         Xrecord myXrecord = new Xrecord();
11.                         myXrecord.Data = new ResultBuffer(new TypedValue(Convert.ToInt32(DxfCode.Text), txt), new TypedValue(Convert.ToInt32(DxfCode.Int16), num));
12.                         nod.SetAt("ViskoOPT", myXrecord);
13.                         trans.AddNewlyCreatedDBObject(myXrecord, true);
14.                         //commit your transaction
15.                         trans.Commit();
16.                 }
17.         }
18. }

[n.yuan]

It is not a good practice to directly write data (XRecord) into NamedDictionary at database level. If you need to store data into NamedDictionary, you'd better create a new DBDictionary underneath the database-level NamedDictionary with a unique key following a good naming convention.

If you use some database browsing tool, such as MgdDB tool, you can see there are many DBDictionary entries in database-level NameDictionary, some are built-in for vanilla AutoCAD, some are for AutoCAD vertical cousins, some are from third party tools. Create your own DBDictionary underneath the top-level NamedDictionary and only mess it up inside your own dictionary.

[dgorsman]

^ +1

Makes life much easier when you only have to worry about your own container.  If necessary (and I find it usually is) there can be dictionaries inside dictionaries (inside dicitonaries) to keep everything well organized.

[krkec]

Thanks guys I tryed Berts solution and it works, but i will try other solutions

[krkec]

where can i find MgdDB tool. I google it but i cant find it

[MexicanCustard]

where can i find MgdDB tool. I google it but i cant find it

Try MgdDbg
https://www.google.com/search?q=mgddbg&sourceid=opera&ie=UTF-8&oe=UTF-8