teachermanage.aspx.cs

guan yu pai ke xi tong de ruan jian

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Collections.Generic;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

using Y2T03.CourseScheduler.CourseBLL;
using Y2T03.CourseScheduler.CourseModel;

public partial class TeacherManage : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void dtvTeachers_ItemInserting(object sender, DetailsViewInsertEventArgs e)
    {
        try
        {
            Teacher teacher = new Teacher();

            //
            // 找到dtvTeachers中的行中控件的值
            //
            TextBox name = this.dtvTeachers.FindControl("txtName") as TextBox;
            DropDownList section = this.dtvTeachers.FindControl("ddlGetSections") as DropDownList;
            RadioButtonList speciality = this.dtvTeachers.FindControl("rblGetSpecialities") as RadioButtonList;

            teacher.Name = name.Text;
            teacher.Section.SectionCode = section.SelectedValue.ToString();
            teacher.Speciality.SpecialityId = int.Parse(speciality.SelectedValue.ToString());

            bool flg = TeacherManagerBLL.Create(teacher);  // 调用自定义的插入方法

            if (flg == true)
            {
                this.dtlTeacher.DataBind();  // 重新绑定教员 DataList

                PopupMessage("添加成功!!!");  // 弹出 "添加成功" 的消息提示框
            }
            else
            {
                PopupMessage("长度超过限制!!!");
            }
            this.dtvTeachers.ChangeMode(DetailsViewMode.ReadOnly);
        }
        catch (Exception ex)
        {
            string err = ex.Message;
        }
        finally
        {
            e.Cancel = true;    // 取消插入事件，不执行“插入”按钮绑定的方法
        }
    }

    /// <summary>
    /// 弹出操作结果
    /// </summary>
    /// <param name="message">弹出对话框信息内容</param>
    protected void PopupMessage(string message)
    {
        try
        {
            ClientScriptManager csm = this.Page.ClientScript;   // 获取管理客户端脚本的方法
            Type type = this.GetType();     // 获取类型
            string csKey = "PopupMessage";  // 设置消息

            //
            // 判断是否已经注册了启动脚本
            //
            if (!csm.IsStartupScriptRegistered(type, csKey))
            {
                string script = string.Format("alert('{0}');", message);    //格式化输出弹出消息的内容
                csm.RegisterStartupScript(type, csKey, script, true);   //注册启动脚本
            }
        }
        catch (Exception ex)
        {
            string err = ex.Message;
        }
    }

    protected void dtvTeachers_ItemDeleting(object sender, DetailsViewDeleteEventArgs e)
    {
        try
        {
            int keyValue = int.Parse(e.Keys["TeacherId"].ToString());   // 获得 DetailsView 的 DataKeyNames 键值，该属性中保存有实体对象的主键

            if (this.dtlTeacher.Items.Count <= 1)
            {
                PopupMessage("教员不能全部删除!!!"); 
            }
            else
            {
                TeacherManagerBLL.Delete(keyValue); // 调用自定义的删除方法

                this.dtlTeacher.DataBind(); // 重新绑定教员 DataList

                PopupMessage("删除成功!!!");  // 弹出 "删除成功" 的消息提示框
            }
            this.dtvTeachers.ChangeMode(DetailsViewMode.ReadOnly);
        }
        catch (Exception ex)
        {
            string err = ex.Message;
        }
        finally
        {
            e.Cancel = true;    // 取消删除事件，不执行“删除”按钮绑定的方法
        }
    }

    protected void dtvTeachers_ItemUpdating(object sender, DetailsViewUpdateEventArgs e)
    {
        try
        {
            Teacher teacher = new Teacher();

            //
            // 找到dtvTeachers中的行中控件的值
            //
            Label teacherId = this.dtvTeachers.FindControl("lblTeacherId") as Label;
            TextBox name = this.dtvTeachers.FindControl("txtName") as TextBox;
            DropDownList section = this.dtvTeachers.FindControl("ddlGetSections") as DropDownList;
            RadioButtonList speciality = this.dtvTeachers.FindControl("rblGetSpecialities") as RadioButtonList;

            teacher.TeacherId = int.Parse(teacherId.Text.ToString());
            teacher.Name = name.Text;
            teacher.Section.SectionCode = section.SelectedValue.ToString();
            teacher.Speciality.SpecialityId = int.Parse(speciality.SelectedValue.ToString());

            bool flg = TeacherManagerBLL.Update(teacher);  // 调用自定义的更新方法

            if (flg == true)
            {
                this.dtlTeacher.DataBind();  // 重新绑定教员 DataList

                PopupMessage("修改成功!!!");  // 弹出 "修改成功" 的消息提示框
            }
            else
            {
                PopupMessage("长度超过限制!!!");
            }
            this.dtvTeachers.ChangeMode(DetailsViewMode.ReadOnly);
        }
        catch (Exception ex)
        {
            string err = ex.Message;
        }
        finally
        {
            e.Cancel = true;    // 取消更新事件，不执行“更新”按钮绑定的方法
        }
    }
}