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Old October 8th, 2005, 02:56 AM
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Default Populating a DataGridViewImageColumn.

Hi, I have a problem with the following code, I need to read three cells and build up an ImagePath and add it to a root Path, with that path I need to populate the ImageColumn. When the code runs all I get are blank Image Boxes.

        private DataSet InitializeDataGridViewer(string connectionString)
            string commandString = "Select * From SMASTER";

            OleDbDataAdapter DataAdapter = new OleDbDataAdapter(commandString, ConnectionString);
            DataSet DataSet = new DataSet();
            DataAdapter.Fill(DataSet, "SMASTER");
            dataGridView1.DataSource = DataSet.Tables["SMASTER"].DefaultView;
            DataGridViewImageColumn imageColumn;
            imageColumn = new DataGridViewImageColumn();
            imageColumn.HeaderText = "1st Image";
            imageColumn.Name = "1stImage";

            foreach (DataGridViewRow row in dataGridView1.Rows)
                    RawImagePath = row.Cells["PATH"].Value.ToString() +
                    "\\" +
                    row.Cells["BATCH_NO"].Value.ToString() +
                    row.Cells["STARTID"].Value.ToString() +
                string fullPath = imagePaths[0] + "\\" + RawImagePath;
                string newfullstring = fullPath.Substring(10, fullPath.Length - 10);
                Image.GetThumbnailImageAbort myCallback = new Image.GetThumbnailImageAbort(ThumbnailCallback);
                Bitmap myBitmap = new Bitmap(newfullstring);
                Image myThumbnail = myBitmap.GetThumbnailImage(40, 60, myCallback, IntPtr.Zero);
                row.Cells["1stImage"].Value = myThumbnail;
                //row.Cells["1stImage"].Value = imageColumn.Image = myThumbnail;
            return DataSet;
        public bool ThumbnailCallback()
            return false;

Now when I run the version with the commented lines swaped, When run, instead of a different image (According to the path), all I get is the same image in each cell.

Any help would be welcome.
Thanks in advance,
Robert Kelly.

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