updateteacher.aspx.cs

来自「《精通ASP.NET2.0网络应用系统开发》书中的源码」· CS 代码 · 共 114 行

using System;
using System.Data;
using System.Configuration;
using System.Collections;
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 System.Data.SqlClient;
using StudentManager;

public partial class 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 BindDepartmentData()
	{
		///获取数据源
		StudentManager.Department department = new Department();
		SqlDataReader 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();

		///关闭数据源和数据库的链接
		recd.Close();
	}

	private void BindTeacherData(int nTeacherID)
	{
		///获取数据
		Teacher teacher = new Teacher();
		SqlDataReader rect = teacher.GetSingleTeacher(nTeacherID);

		///读取数据
		if (rect.Read())
		{
			///显示数据
			Name.Text = rect["Name"].ToString();
			Age.Text = rect["Age"].ToString();
			Address.Text = rect["Address"].ToString();
			Phone.Text = rect["Phone"].ToString();
			Birthday.Text = rect["Birthday"].ToString();
			HireDate.Text = rect["HireDate"].ToString();

			ASPNET2System.SetListBoxItem(DepartmentList,rect["DepartmentID"].ToString());
		}
		rect.Close();          ///关闭数据源
	}

	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
			StudentManager.Teacher department = new StudentManager.Teacher();
			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('" + ASPNET2System.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="
					+ ASPNET2System.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");
	}	
}