版权声明:我的博客都是学习笔记,仅供自己总结回顾并无其他用途,就不注明出处了,请原谅! https://blog.csdn.net/SlowIsFastLemon/article/details/89281696
1 修改学员信息后台访问方法编写
/// <summary>
/// 修改学员时判断身份证号是否和其他学员重复
/// </summary>
/// <param name="studentIdNo"></param>
/// <param name="studentId"></param>
/// <returns></returns>
public bool IsIdNoExisted(string studentIdNo, string studentId)
{
string sql = "select count(*) from Students where StudentIdNo={0} and StudentId<>{1}";
sql = string.Format(sql, studentIdNo, studentId);
int result = Convert.ToInt32(SQLHelper.GetSingleResult(sql));
if (result == 1) return true;
else return false;
}
/// <summary>
/// 修改学员对象
/// </summary>
/// <param name="objStudent"></param>
/// <returns></returns>
public int ModifyStudent(Student objStudent)
{
StringBuilder sqlBuilder = new StringBuilder();
sqlBuilder.Append("Update Students set StudentName='{0}',Gender='{1}',Birthday='{2}',");
sqlBuilder.Append("StudentIdNo={3},Age={4},PhoneNumber='{5}',StudentAddress='{6}',
CardNo='{7}',ClassId={8}");
sqlBuilder.Append(" where StudentId={9}");
//解析对象
string sql = string.Format(sqlBuilder.ToString(),
objStudent.StudentName, objStudent.Gender, objStudent.Birthday,
objStudent.StudentIdNo, objStudent.Age, objStudent.PhoneNumber,
objStudent.StudentAddress, objStudent.CardNo, objStudent.ClassId, objStudent.StudentId);
try
{
return SQLHelper.Update(sql);
}
catch (SqlException ex)
{
throw new Exception("数据库操作出现异常!具体信息:" + ex.Message);
}
catch (Exception ex)
{
throw ex;
}
}
2 学员修改UI实现
修改方法编写:
//修改学员对象
private void btnEidt_Click(object sender, EventArgs e)
{
if (this.dgvStudentList.RowCount == 0)
{
MessageBox.Show("没有任何要修改的学信息!", "提示信息");
return;
}
if (this.dgvStudentList.CurrentRow == null)
{
MessageBox.Show("请选中要修改的学员信息!", "提示信息");
return;
}
//获取学号
string studentId = this.dgvStudentList.CurrentRow.Cells["StudentId"].Value.ToString();
//获取要修改的学员详细信息
StudentExt objStudent = objStuService.GetStudentById(studentId);
//显示要修改的学员信息窗口
FrmEditStudent objEditStudent = new FrmEditStudent(objStudent);
DialogResult result = objEditStudent.ShowDialog();
//判断修改是否成
if (result == DialogResult.OK)
{
btnQuery_Click(null, null);//同步刷新修改的信息(适合查询数据量小的情况)
}
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Text.RegularExpressions;
using Models;
using DAL;
namespace StudentManager
{
public partial class FrmEditStudent : Form
{
private StudentClassService objClassService = new StudentClassService();
private StudentService objStudentService = new StudentService();
public FrmEditStudent()
{
InitializeComponent();
//初始化班级下拉框
this.cboClassName.DataSource = objClassService.GetAllClasses();
this.cboClassName.DisplayMember = "ClassName";
this.cboClassName.ValueMember = "ClassId";
}
public FrmEditStudent(StudentExt objStudent)
: this()
{
//显示学员信息
this.txtStudentId.Text = objStudent.StudentId.ToString();
this.txtStudentName.Text = objStudent.StudentName;
this.txtStudentIdNo.Text = objStudent.StudentIdNo;
this.txtPhoneNumber.Text = objStudent.PhoneNumber;
this.dtpBirthday.Text = objStudent.Birthday.ToShortDateString();
this.txtAddress.Text = objStudent.StudentAddress;
if (objStudent.Gender == "男") this.rdoMale.Checked = true;
else this.rdoFemale.Checked = true;
this.cboClassName.Text = objStudent.ClassName;
this.txtCardNo.Text = objStudent.CardNo;
}
//提交修改
private void btnModify_Click(object sender, EventArgs e)
{
#region 验证信息
if (this.txtStudentName.Text.Trim().Length == 0)
{
MessageBox.Show("学生姓名不能为空!", "提示信息");
this.txtStudentName.Focus();
return;
}
//验证性别
if (!this.rdoFemale.Checked && !this.rdoMale.Checked)
{
MessageBox.Show("请选择学生性别!", "提示信息");
return;
}
//验证班级
if (this.cboClassName.SelectedIndex == -1)
{
MessageBox.Show("请选择班级!", "提示信息");
return;
}
//验证身份证号是否符合要求
if (!Common.DataValidate.IsIdentityCard(this.txtStudentIdNo.Text.Trim()))
{
MessageBox.Show("身份证号不符合要求!", "验证提示");
this.txtStudentIdNo.Focus();
return;
}
//验证身份证号是否重复
if (objStudentService.IsIdNoExisted(this.txtStudentIdNo.Text.Trim(), this.txtStudentId.Text.Trim()))
{
MessageBox.Show("身份证号不能和现有学员身份证号重复!", "验证提示");
this.txtStudentIdNo.Focus();
this.txtStudentIdNo.SelectAll();
return;
}
//验证身份证号是否和出生日期相吻合
string month = string.Empty;
string day = string.Empty;
if (Convert.ToDateTime(this.dtpBirthday.Text).Month < 10)
month = "0" + Convert.ToDateTime(this.dtpBirthday.Text).Month;
if (Convert.ToDateTime(this.dtpBirthday.Text).Day < 10)
day = "0" + Convert.ToDateTime(this.dtpBirthday.Text).Day;
string birthday = Convert.ToDateTime(this.dtpBirthday.Text).Year.ToString() + month + day;
if (!this.txtStudentIdNo.Text.Trim().Contains(birthday))
{
MessageBox.Show("身份证号和出生日期不匹配!", "验证提示");
this.txtStudentIdNo.Focus();
this.txtStudentIdNo.SelectAll();
return;
}
//验证出生日期
int age = DateTime.Now.Year - Convert.ToDateTime(this.dtpBirthday.Text).Year;
if (age < 18)
{
MessageBox.Show("学生年龄不能小于18岁!", "验证提示");
return;
}
#endregion
#region 封装学生对象
Student objStudent = new Student()
{
StudentId = Convert.ToInt32(this.txtStudentId.Text.Trim()),
StudentName = this.txtStudentName.Text.Trim(),
Gender = this.rdoMale.Checked ? "男" : "女",
Birthday = Convert.ToDateTime(this.dtpBirthday.Text),
StudentIdNo = this.txtStudentIdNo.Text.Trim(),
PhoneNumber = this.txtPhoneNumber.Text.Trim(),
StudentAddress = this.txtAddress.Text.Trim(),
CardNo = this.txtCardNo.Text.Trim(),
ClassId = Convert.ToInt32(this.cboClassName.SelectedValue),//获取选择班级对应的ClassId
Age = DateTime.Now.Year - Convert.ToDateTime(this.dtpBirthday.Text).Year
};
#endregion
#region 提交修改
try
{
if (objStudentService.ModifyStudent(objStudent) == 1)
{
MessageBox.Show("学员信息修改成功!", "提示信息");
this.DialogResult = DialogResult.OK;//返回修改成功的信息
this.Close();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
#endregion
}
private void btnClose_Click(object sender, EventArgs e)
{
this.Close();
}
}
}
为了方便用户操作,我们可以为dgv提供右键菜单的功能。