Identify Image status

By Virupaksha Aithal

Using “RasterImageDef” API’s “IsLoaded”, “ActiveFileName” & “SourceFileName” you can identify the status of the image in the drawing.

Loaded : IsLoaded return True
Unloaded : IsLoaded is false and  ActiveFileName has a valid file name
Not found : IsLoaded is false and ActiveFileName is empty

Below code goes throw all the images definition in the drawing and prints its status.

[CommandMethod("ImageStatus")]
public static void ImageStatus()
{
    Document doc = Application.DocumentManager.MdiActiveDocument;
    Database db = doc.Database;
    Editor ed = doc.Editor;
 
    ObjectId imageDict = RasterImageDef.GetImageDictionary(db);
 
    if (imageDict == ObjectId.Null)
    {
        ed.WriteMessage("No images in the drawing.n");
        return;
    }
 
    using (Transaction Tx = db.TransactionManager.StartTransaction())
    {
        DBDictionary ImageDic =
          (DBDictionary)Tx.GetObject(imageDict, OpenMode.ForRead);
 
        foreach (DBDictionaryEntry ImageDef in ImageDic)
        {
            RasterImageDef imageDef = (RasterImageDef)Tx.GetObject(
                                ImageDef.Value, OpenMode.ForRead);
 
            if (imageDef.IsLoaded)
            {
                ed.WriteMessage(imageDef.ActiveFileName + 
                                " : loaded" + "n");
            }
            else
            {
                //image may be not found or unloaded.
                if (imageDef.ActiveFileName.Length == 0)
                {
                    //no file name... 
                    //ed.WriteMessage("file not foundn");
                    ed.WriteMessage(imageDef.SourceFileName +
                               " : not found" + "n");
                }
                else
                {
                    ed.WriteMessage(imageDef.ActiveFileName +
                                 " : unloaded" + "n");
                }
            }
        }
        Tx.Commit();
    }
}