updateteacher.aspx.cs

精通网络应用系统开发 光盘 该书是人民邮电出版社出版的

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

public partial class DesktopModules_Teacher_UpdateTeacher : System.Web.UI.Page
{
    int nTeacherID = -1;
    protected void Page_Load(object sender, EventArgs e)
    {   ///获取ID的值
        if (Request.Params["TeacherID"] != null)
        {
            nTeacherID = Int32.Parse(Request.Params["TeacherID"].ToString());
        }
        if (!Page.IsPostBack)
        {   ///绑定控件的数据
            BindDepartmentData();
            if (nTeacherID > -1) { BindTeacherData(nTeacherID); }
        }
        ///设置按钮的可用性
        UpdateBtn.Enabled = DepartmentList.Items.Count > 0
            && nTeacherID >= 0 ? true : false;
    }
    private void BindTeacherData(int nTeacherID)
    { 
        ///获取数据
        TeacherM teacher = new TeacherM();
        Teacher rect = teacher.GetSingleTeacher(nTeacherID);
        ///读取数据
        if (rect!=null)
        {   ///显示数据
            Name.Text = rect.Name;
            Age.Text = rect.Age.ToString();
            Address.Text = rect.Address;
            Phone.Text = rect.Phone;
            Birthday.Text = rect.Birthday.ToString();
            HireDate.Text = rect.HireDate.ToString();
            ASPNET35System.SetListBoxItem(DepartmentList,
                rect.DepartmentID.ToString());
        }
    }
    private void BindDepartmentData()
    {
        ///获取数据源
        DepartmentM department = new DepartmentM();
         Table<Department> recd = department.GetDepartments();

        ///设定控件的数据源，Text域属性、value域属性
        DepartmentList.DataSource = recd;
        DepartmentList.DataTextField = "Desn";
        DepartmentList.DataValueField = "DepartmentID";

        ///绑定控件的数据
        DepartmentList.DataBind();
    }
    protected void UpdateBtn_Click(object sender, EventArgs e)
    {
        ///如果页面输入内容合法
        if (Page.IsValid == true)
        {   ///定义类
            TeacherM department = new TeacherM();
            try
            {   ///修改
                department.UpdateTeacher(nTeacherID, Name.Text.Trim(),
                    Int32.Parse(Age.Text.Trim()), Address.Text.Trim(),
                    Phone.Text.Trim(), DateTime.Parse(Birthday.Text.Trim()),
                    DateTime.Parse(HireDate.Text.Trim()),
                    Int32.Parse(DepartmentList.SelectedValue));
                ///显示操作结果信息
                Response.Write("<script>window.alert('" +
                    ASPNET35System.OPERATIONUPDATESUCCESSMESSAGE + "')</script>");
            }
            catch (Exception ex)
            {   ///显示修改操作中的失败、错误信息
                Response.Redirect("~/DesktopModules/ErrorPage.aspx?ErrorUrl="
                    + ASPNET35System.RedirectErrorUrl(Request.RawUrl)
                    + "&ErrorMessage=" + ex.Message.Replace("\n", " "));
            }
        }

    }
    protected void ReturnBtn_Click(object sender, EventArgs e)
    {
        ///返回管理页面
        Response.Redirect("~/DesktopModules/Teacher/TeacherManage.aspx");

    }
}