private void dvwBrowser_CellDoubleClick(object sender, System.Windows.Forms.DataGridViewCellEventArgs e) { if (e.RowIndex >= 0 && e.ColumnIndex >= 0) { Object temp = this._data.Rows[e.RowIndex][e.ColumnIndex]; if (temp is INode) { INode n = (INode)temp; if (n.NodeType == NodeType.Uri) { Uri u = ((IUriNode)n).Uri; fclsGraphBrowser browser = new fclsGraphBrowser(u); browser.Show(); } } } }