डेटाग्रिडव्यू सी# में पहली पंक्ति को छोड़कर मेरे कोड के सभी डेटा की पहली पंक्ति की जाँच क्यों नहीं की जा सकती?

अनुमान लगाएं कि डेटाग्रिडव्यू ने 10 डेटा लोड किया है। जब मैंने सेलेक्टऑल पर क्लिक किया तो 9वीं पंक्ति सत्य जांची गई लेकिन पहली पंक्ति गलत जांची नहीं गई।

भले ही

datagridview loaded only one data then i clicked SelectALL but row not selected

What I have tried:

private void ReportViewer_Load(object sender, EventArgs e)
        {
    grdEmailData.ColumnHeaderMouseClick += grdEmailData_ColumnHeaderMouseClick;
       
 }

private void btnSearch_Click(object sender, EventArgs e)
        {
            try
            {
                using (SqlConnection connection = new SqlConnection(ConnectionString))
                {
                    connection.Open();

                    string query = "SELECT * FROM email_notification WHERE bank_code = @BankCode AND stmdate = @StmDate " +
                                   "UNION " +
                                   "SELECT * FROM email_notification_arc WHERE bank_code = @BankCode AND stmdate = @StmDate";

                    using (SqlCommand command = new SqlCommand(query, connection))
                    {
                        command.Parameters.AddWithValue("@BankCode", _fiid); // Assuming _serverName is the bank code
                        command.Parameters.AddWithValue("@StmDate", dtpStmDate.Value.ToString("dd/MM/yyyy")); 

                        SqlDataAdapter adapter = new SqlDataAdapter(command);
                        DataTable dataTable = new DataTable();
                        adapter.Fill(dataTable);


                        DataGridViewCheckBoxColumn checkBoxColumn = new DataGridViewCheckBoxColumn();
                        checkBoxColumn.HeaderText = "SelectALL";
                        checkBoxColumn.Name = "All";
                        grdEmailData.Columns.Insert(0, checkBoxColumn);


                        // Bind the data to the DataGridView
                        grdEmailData.DataSource = dataTable;

                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show($"Error loading data: {ex.Message}", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

 private void grdEmailData_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
        {
            // Check if the clicked cell is in the "All" column header
            if (e.RowIndex == -1 && e.ColumnIndex == grdEmailData.Columns["All"].Index)
            {
                ToggleSelectAll();
            }
        }


        private void ToggleSelectAll()
        {
            // Toggle the select/unselect all logic in the "All" column
            bool selectAll = true;

            foreach (DataGridViewRow row in grdEmailData.Rows)
            {
                
                DataGridViewCheckBoxCell checkBoxCell = row.Cells["All"] as DataGridViewCheckBoxCell;

                if (checkBoxCell != null)
                {
                    checkBoxCell.Value = selectAll;
                }
            }
        }