//根据学号查询
private void btnQueryById_Click(object sender, EventArgs e)
{
if (this.txtStudentId.Text.Trim().Length == 0)
{
MessageBox.Show("请输入学号！", "提示信息");
this.txtStudentId.Focus();
return;
}
//进一步验证学号必须是数字（请使用正则表达式...）
if (!Common.DataValidate.IsInteger(this.txtStudentId.Text.ToString()))
{
MessageBox.Show("输入的学号必须为数字！", "提示信息");
this.txtStudentId.Focus();
return;
}
//执行查询
StudentExt objStudent = objStuService.GetStudentById(this.txtStudentId.Text.Trim());
if (objStudent == null)
{
MessageBox.Show("学员信息不存在！", "提示信息");
this.txtStudentId.Focus();
}
else
{
//在学员详细信息窗体显示
FrmStudentInfo objFrmStuInfo = new FrmStudentInfo(objStudent);
objFrmStuInfo.Show();
}
}
//根据学号查询
private void btnQueryById_Click(object sender, EventArgs e)
{
//数据验证
if (this.txtStudentId.Text.Trim().Length == 0)
{
MessageBox.Show("请输入查询学号！", "提示信息");
this.txtStudentId.Focus();
return;
}
if (!Common.DataValidate.IsInteger(this.txtStudentId.Text.Trim()))
{
MessageBox.Show("学号必须是整数！", "提示信息");
this.txtStudentId.SelectAll();
this.txtStudentId.Focus();
return;
}
Student objStudent = objStuService.GetStudentById(this.txtStudentId.Text.Trim());
if (objStudent == null)
{
MessageBox.Show("学员信息不存在！", "查询提示");
this.txtStudentId.Focus();
}
else
{
//显示学员详细信息
FrmStudentInfo objFrm = new FrmStudentInfo(objStudent);
objFrm.Show();
}
}
//双击查看学员详情
private void dgvStudentList_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
{
if (this.dgvStudentList.CurrentRow != null)
{
string studentId = this.dgvStudentList.CurrentRow.Cells["StudentId"].Value.ToString();
Student objStudent = objStuService.GetStudentById(studentId);
FrmStudentInfo objFrm = new FrmStudentInfo(objStudent);
objFrm.Show();
}
}
//双击选中的学员对象并显示详细信息
private void dgvStudentList_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
{
StudentService studentService = new StudentService();
int stuId = int.Parse(this.dgvStudentList.CurrentRow.Cells[0].Value.ToString());
Student student = null;
student = studentService.GetStudentById(stuId);
FrmStudentInfo info = new FrmStudentInfo(student);
info.Show();
}
//根据学号查询
private void btnQueryById_Click(object sender, EventArgs e)
{
if (txtStudentId.Text.Trim().Length == 0)
{
MessageBox.Show("请输入要查询的学号!", "查询提示:");
return;
}
StudentExt objStudent = objStudnetService.GetStudentByStuID(txtStudentId.Text.Trim());
FrmStudentInfo studentInfo = new FrmStudentInfo(objStudent);
studentInfo.Show();
}
//Ë«»÷Ñ¡ÖеÄѧԱ¶ÔÏó²¢ÏÔʾÏêϸÐÅÏ¢
private void dgvStudentList_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
{
if (this.dgvStudentList.CurrentRow == null)
{
return;
}
string studentId = this.dgvStudentList.CurrentRow.Cells["StudentId"].Value.ToString();
try
{
Student objStudent = objStudentService.GetStudentByStudentId(studentId);
FrmStudentInfo frmStudentInfo = new FrmStudentInfo(objStudent);
frmStudentInfo.Show();
}
catch (Exception ex)
{
MessageBox.Show("数据库操作错误，错误信息：" + ex.Message, "提示信息");
}
}
/// <summary>
/// 根据学号精确查找学员
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void BtnQueryById_Click(object sender, EventArgs e)
{
if (this.txtStudentId.Text.Trim().Length == 0)
{
MessageBox.Show("请输入您要查询的学号！", "提示信息");
return;
}
var studentId = Convert.ToInt32(this.txtStudentId.Text.Trim());
StudentExt result = studentService.QueryStudentByStudengtId(studentId);
if (result == null)
{
MessageBox.Show($"没有学号为{studentId}的学生，请输入正确的学号！", "提示信息");
return;
}
else
{
FrmStudentInfo frmStudentInfo = new FrmStudentInfo(result);
frmStudentInfo.Show();
}
}
//search by student Id
private void btnQueryById_Click(object sender, EventArgs e)
{
if (this.txtStudentId.Text.Trim().Length == 0)
{
MessageBox.Show("The Student Id can not be null!", "Warning");
this.txtStudentId.Focus();
return;
}
Student objStu = objStuService.GetStudentById(this.txtStudentId.Text.Trim());
if (objStu == null)
{
MessageBox.Show("The student is not exist!", "Warning");
}
else
{
FrmStudentInfo frmStuInfo = new FrmStudentInfo(objStu);
frmStuInfo.Show();
}
}
private void btnQueryById_Click(object sender, EventArgs e)
{
if (this.txtStudentId.Text.Length == 0)
{
MessageBox.Show("Please entry the StudentID");
this.txtStudentId.Focus();
return;
}
StudentExt objStudentExt = objStudentService.GetStudentByStudentId(Convert.ToInt32(this.txtStudentId.Text.Trim()));
if (objStudentExt == null)
{
MessageBox.Show("This studentd not exist !");
this.txtStudentId.Focus();
return;
}
else
{
FrmStudentInfo objFrmStudentInfo = new FrmStudentInfo(objStudentExt);
objFrmStudentInfo.Show();
}
}
//根据学号查询
private void btnQueryById_Click(object sender, EventArgs e)
{
if (this.txtStudentId.Text.Trim().Length == 0)
{
MessageBox.Show("请输入要查询的学号", "查询提示");
this.txtStudentId.Focus();
return;
}
//根据学号查询学员对象
StudentExt objStudent = objStudentSerive.GetStudentByStuId(this.txtStudentId.Text.Trim());
if (objStudent == null)
{
MessageBox.Show("您输入的学号不正确，未找到该学员信息", "查询提示");
this.txtStudentId.Focus();
this.txtStudentId.SelectAll();
}
else
{
//创建学员信息显示窗体
FrmStudentInfo objStudentForm = new FrmStudentInfo(objStudent);
objStudentForm.Show();
}
}
//根据学号查询
private void btnQueryById_Click(object sender, EventArgs e)
{
#region 数据验证
//学号是否为空
if (this.txtStudentId.Text.Trim().Length == 0)
{
MessageBox.Show("请输入学号！", "提示信息");
this.txtStudentId.Focus();
return;
}
//学号是否为整数
if (!Common.DataValidate.IsInteger(this.txtStudentId.Text.Trim()))
{
MessageBox.Show("学号必须是正整数！", "提示信息");
this.txtStudentId.SelectAll();
this.txtStudentId.Focus();
return;
}
//学号是否存在-查找数据是否存在学号
Student objStudent = objStuService.GetStudentsById(this.txtStudentId.Text.Trim());
//判断是否为空
if (objStudent == null)
{
MessageBox.Show("学员信息不存在！", "提示信息");
this.txtStudentId.Focus();
return;
}
#endregion
#region 数据交互
FrmStudentInfo frmStudentInfo = new FrmStudentInfo(objStudent);
frmStudentInfo.Show();
#endregion
}
//¸ù¾ÝѧºÅ²éѯ
private void btnQueryById_Click(object sender, EventArgs e)
{
if (txtStudentId.Text.Trim().Length == 0)
{
MessageBox.Show("请输入学号", "提示信息");
return;
}
if (!Common.DataValidate.IsInteger(txtStudentId.Text.Trim()))
{
MessageBox.Show("请输入数字学号", "提示信息");
txtStudentId.SelectAll();
txtStudentId.Focus();
return;
}
try
{
Student objStudent = objStudentService.GetStudentByStudentId(txtStudentId.Text.Trim());
stuList = new List <Student>();
if (objStudent == null)
{
MessageBox.Show("学员信息不存在", "查询提示");
this.txtStudentId.Focus();
this.txtStudentId.SelectAll();
return;
}
else
{
FrmStudentInfo frmStudentInfo = new FrmStudentInfo(objStudent);
frmStudentInfo.Show();
}
}
catch (Exception ex)
{
MessageBox.Show("数据库操作错误，错误信息：" + ex.Message, "提示信息");
}
}