private void tblbankkonto2DataGridView_SelectionChanged(object sender, EventArgs e) { try { FrmMain frmMain = this.ParentForm as FrmMain; FrmKladder frmKladder = frmMain.GetChild("Kladder") as FrmKladder; tblbankkonto recBankkonto = this.tblbankkontoBindingSourceAfstemte.Current as tblbankkonto; int? Bilagpid = (from t in Program.dbDataTransSumma.tbltrans where t.afstem == recBankkonto.afstem select t.bilagpid).First(); frmKladder.findBilag(Bilagpid); } catch { } }