加载数据时未触发Datagridview组合框和文本框事件

Question

I am creating an application in which datagridview having one combobox and multiple textbox

In datagridview, when I select manually datagridviewcombobox value, Textbox value is filled

But datagridview is populated by bindingsource and value of datagridviewcombobox get selected but textbox value is empty

Example as below

Combobox value selected by user, Account Name textbox filled

Combobox value selected by bindingsource(Dynamically), Account Name textbox is Empty

Below is my code

int journalID = 0;
public Add(int id = 0)
{
     BindControls();
     journalID = id;
}


  private async void BindControls()
  {
     try
     {               
            if (journalID > 0)
            {
                List<JournalAccountViewModel> list = await new JournalModel().GetDetailById(journalID);
                for (int i = 0; i <= list.Count - 1; i++)
                {
                    bindingSource1.Add(list[i]);
                }
            }
            else
            {
                bindingSource1.Add(new JournalAccountViewModel());
                bindingSource1.List.Clear();
            }
            dgvJournal.AutoGenerateColumns = false;
            dgvJournal.AllowUserToAddRows = true;
            dgvJournal.AutoSize = true;
            dgvJournal.DataSource = bindingSource1;
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message, "Rule", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
    }


   private void dgvJournal_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
    {
        try
        {
            if (dgvJournal.CurrentCell.ColumnIndex == dgvJournal.Columns[colCredit.Name].Index) //Desired Column
            {
                TextBox tb = e.Control as TextBox;
                if (tb != null)
                {
                    tb.KeyPress += new KeyPressEventHandler(txtNumeri_KeyPress);
                }
            }

            if (dgvJournal.CurrentCell.ColumnIndex == dgvJournal.Columns[ColDebit.Name].Index) //Desired Column
            {
                TextBox tb = e.Control as TextBox;
                if (tb != null)
                {
                    tb.KeyPress += new KeyPressEventHandler(txtNumeri_KeyPress);
                }
            }


            ComboBox combo = e.Control as ComboBox;
            if (combo != null)
            {
                combo.SelectedIndexChanged -= new EventHandler(ComboBox_SelectedIndexChanged);
                combo.SelectedIndexChanged += new EventHandler(ComboBox_SelectedIndexChanged);
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message, "Rule", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }

    }


   private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
    {
        try
        {
            if (((ComboBox)sender).SelectedItem != null)
            {
                AccountViewModel account = (AccountViewModel)((ComboBox)sender).SelectedItem;
                var currentcell = dgvJournal.CurrentCellAddress;
                DataGridViewTextBoxCell cel = (DataGridViewTextBoxCell)dgvJournal.Rows[currentcell.Y].Cells[ColAccountName.Name];
                cel.Value = account.Name;
            }
            else
            {
                ((ComboBox)sender).SelectedIndex = 0;
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message, "Rule", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
    }

  private void txtNumeri_KeyPress(object sender, KeyPressEventArgs e)
    {
        try
        {
            if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar) && e.KeyChar != '.')
            {
                e.Handled = true;
            }

            // only allow one decimal point
            if (e.KeyChar == '.' && (sender as TextBox).Text.IndexOf('.') > -1)
            {
                e.Handled = true;
            }

        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message, "Rule", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
    }

Please suggest me how to get textbox value filled when combobox value is set programmtically.

Answer 1

I would create a CellValueChanged event for that DataGridView and copy over the functionality from your ComboBox_SelectedIndexChanged event. This would eliminate the need to set those events in dgvJournal_EditingControlShowing and also resolve your original issue since it will fire anytime a value is changed in the AccountNumber field.

    private void dgvJournal_CellValueChanged(object sender, DataGridViewCellEventArgs e)
    {
        int accountNumberColIndex = dgvJournal.Columns["AccountNumber"].Index;

        // Checking that this value is from the account number column
        if (e.ColumnIndex == accountNumberColIndex)
        {
            AccountViewModel account = (AccountViewModel) dgvJournal.Rows[e.RowIndex].Cells[e.ColumnIndex].Value;
            int accountNameColIndex = dgvJournal.Columns["AccountName"].Index;

            DataGridViewTextBoxCell accountNameCell = (DataGridViewTextBoxCell) dgvJournal.Rows[e.RowIndex].Cells[accountNameColIndex];
            accountNameCell.Value = account.Name;
        }
    }

Answer 2

    private void dgvJournal_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
    {
        if (e.ListChangedType == ListChangedType.Reset)
        {
            var a = (DataGridView)sender;
            var b = a.DataSource;
            var c = (BindingSource)b;
            var d = c.List;
            int sumDebit = 0, sumCredit = 0;
            int cnt = 0;
            foreach (JournalAccountViewModel account in d)
            {
                dgvJournal.Rows[cnt].Cells[ColAccountName.Name].Value = accountList.Where(acc => acc.ID == account.AccountID).FirstOrDefault().Name;
                enableCell(((DataGridViewCell)dgvJournal.Rows[cnt].Cells[ColDebit.Name]), (account.Debit > 0));
                enableCell(((DataGridViewCell)dgvJournal.Rows[cnt].Cells[colCredit.Name]), (account.Credit > 0));
                cnt++;
            }
        }
    }