private void addbtn_Click(object sender, EventArgs e) { //kiem man nhan vien da ton tai chua if (NhanVienController.GetNV(this.txtmanv.Text.Trim()) != null) { return; } bool check = false; if (KiemTraErr(check) == true) { return; } ClassNhanVien nv = new ClassNhanVien(); nv.MaNV = this.txtmanv.Text.Trim(); nv.TenNV = this.txtTenNv.Text.Trim(); if (this.checkFemale.Checked == true) { nv.GioiTinh = "Nu"; } else { nv.GioiTinh = "Nam"; } nv.SDT = this.txtsdt.Text.Trim(); nv.NgaySinh = this.Ngaysinhpicker.Value; nv.MaChucVu = this.cbbChucVu.Text.Trim(); nv.Email = this.txtemail.Text.Trim(); nv.DiaChi = this.txtDiachi.Text.Trim(); //add xuong csdl if (NhanVienController.AddNV(nv) == false) { MessageBox.Show("Loi khi them nhan vien", "Loi", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } ClearControls(); ShowData(); }