How to Run await/async within a For Loop

Question

I'm trying to initiate the following code. There are no errors showing. But these await actions don't work. Can anyone kindly help me to solve this?

private async void TableI_Click(object sender, RoutedEventArgs e)
        {
            MainWindow mainwin = (MainWindow)Window.GetWindow(this);

            List<TblICell> Data = TableIData();
            foreach (TblICell item in Data)
            {
                switch (item.CellID)
                {
                    case 0:
                        await mainwin.MetaWebView.ExecuteScriptAsync($"document.getElementById('Table1_SecurityTitle'" + item.RowID + ").value='" + item.CellVal + "'");
                        await mainwin.MetaWebView.ExecuteScriptAsync($"document.getElementById('Table1_SecurityTitleFootnote'" + item.RowID + ").value='" + item.FNVal + "'");
                        break;

                    case 1:
                        await mainwin.MetaWebView.ExecuteScriptAsync($"document.getElementById('Table1_AmountBeneficiaryOwned'" + item.RowID + ").value='" + item.CellVal + "'");
                        await mainwin.MetaWebView.ExecuteScriptAsync($"document.getElementById('Table1_AmountBeneficiaryOwnedFootnote'" + item.RowID + ").value='" + item.FNVal + "'");
                        break;

                    case 2:
                        await mainwin.MetaWebView.ExecuteScriptAsync($"document.getElementById('Table1_OwnershipForm'" + item.RowID + ").value='" + item.CellVal + "'");
                        await mainwin.MetaWebView.ExecuteScriptAsync($"document.getElementById('Table1_OwnershipFormFootnote'" + item.RowID + ").value='" + item.FNVal + "'");
                        break;

                    case 3:
                        await mainwin.MetaWebView.ExecuteScriptAsync($"document.getElementById('Table1_OwnershipNature'" + item.RowID + ").value='" + item.CellVal + "'");
                        await mainwin.MetaWebView.ExecuteScriptAsync($"document.getElementById('Table1_OwnershipNatureFootnote'" + item.RowID + ").value='" + item.FNVal + "'");
                        break;
                }
            }
        }

Answer 1

What does not work mean? It looks like you are trying to execute some JavaScript, but they all have syntax errors. You are appending the rowId after the closing quote in the getElementById

Answer 2

Try

private async Task TableI_Click(object sender, RoutedEventArgs e)

Never use void with awaiting a task.