addclass.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 102 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 AddClass : System.Web.UI.Page
{
	protected void Page_Load(object sender,EventArgs e)
	{
		if (!Page.IsPostBack)
		{
			///绑定控件的数据
			BindGradeData();
			BindTeacherData();
		}

		///设置按钮的可用性
		AddBtn.Enabled = GradeList.Items.Count > 0 && TeacherList.Items.Count > 0 ? true : false;
	}

	private void BindGradeData()
	{
		///定义获取数据的类
		Grade grade = new Grade();
		SqlDataReader rect = grade.GetGrades();

		///设定控件的数据源
		GradeList.DataSource = rect;

		///设定控件的Text属性和Value属性
		GradeList.DataTextField = "Desn";
		GradeList.DataValueField = "GradeID";

		///绑定控件的数据
		GradeList.DataBind();

		///关闭数据读取器和数据库的连接
		rect.Close();
	}

	private void BindTeacherData()
	{
		///定义获取数据的类
		Teacher teacher = new Teacher();
		SqlDataReader rect = teacher.GetTeachers();

		///设定控件的数据源
		TeacherList.DataSource = rect;

		///设定控件的Text属性和Value属性
		TeacherList.DataTextField = "Name";
		TeacherList.DataValueField = "TeacherID";

		///绑定控件的数据
		TeacherList.DataBind();

		///关闭数据读取器和数据库的连接
		rect.Close();
	}

	protected void AddBtn_Click(object sender,EventArgs e)
	{
		///如果页面输入内容合法
		if (Page.IsValid == true)
		{
			///定义类
			StudentManager.Class gClass = new Class();
			try
			{
				///添加
				gClass.AddClass(Desn.Text.Trim(),Int32.Parse(GradeList.SelectedValue),
					Int32.Parse(TeacherList.SelectedValue),DateTime.Parse(StartDate.Text.Trim()),
					DateTime.Parse(EndDate.Text.Trim()),Int32.Parse(StuNum.Text.Trim()));

				///显示操作结果信息
				Response.Write("<script>window.alert('" + ASPNET2System.OPERATIONADDSUCCESSMESSAGE + "')</script>");
			}
			catch (Exception ex)
			{
				///显示添加操作中的失败、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/Class/ClassManage.aspx");
	}
}