private void txtSearchLog_TextChanged(object sender, EventArgs e) { if (txtSearchLog.Text.Trim().Equals("")) { LoadData(); } else { // DataTable dt = ManagerDAL.FindBook(txtSearch.Text.Trim()); listLog = ManagerDAL.FindLog(txtSearchLog.Text); dtLog = ManagerDAL.ToDataTable <Log>(listLog); dgvLog.DataSource = dtLog; // dgvRecepts.DataSource = dt; } }