student.aspx.cs

学生考勤管理系统学生考勤管理系统学生考勤管理系统学生考勤管理系统学生考勤管理系统

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace kqxt
{
	/// <summary>
	/// student 的摘要说明。
	/// </summary>
	public class student : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.DropDownList DropDownList1;
		protected System.Web.UI.WebControls.TextBox TextBox1;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.Button Button2;
		protected System.Web.UI.WebControls.DataGrid DataGrid1;
		protected System.Web.UI.WebControls.Label Label1;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
			string conn=System.Configuration.ConfigurationSettings.AppSettings["connstr"];
			SqlConnection myconn=new SqlConnection(conn);
			myconn.Open();
			string sech="select stuName from student where stuID='"+Session["usersID"].ToString()+"'";
			SqlCommand cmd=new SqlCommand(sech,myconn);
			SqlDataReader dr=cmd.ExecuteReader();
			if(dr.Read())
			{
				Session["stuname"]=dr["stuName"].ToString();
			}
			Label1.Text="欢迎"+ Session["stuname"].ToString()+"同学！！！";
			if(!this.IsPostBack)
			{
				this.Button1.Visible=false;
				this.DropDownList1.Visible=false;
				this.Label3.Visible=false;
			}
		}

		#region Web 窗体设计器生成的代码
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.Button2.Click += new System.EventHandler(this.Button2_Click);
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.DataGrid1.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.DataGrid1_PageIndexChanged);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button2_Click(object sender, System.EventArgs e)
		{
			this.Button1.Visible=true;
			this.DropDownList1.Visible=true;
			this.Label3.Visible=true;
			this.Button2.Visible=false;
			//object obj = Session["usersID"];
			//string userid=obj.ToString();
			DataSet myds=new DataSet();
			
				string conn=System.Configuration.ConfigurationSettings.AppSettings["connstr"];
				SqlConnection objconn=new SqlConnection(conn);
				
				string sqlstr="select distinct(courseName) from classCourse,course,student,class where student.classID=class.classID and classCourse.courseID=course.courseID and stuID='"+this.TextBox1.Text+"'";
				//SqlCommand mycom=new SqlCommand(sqlstr,objconn);
				//objconn.Open();
				SqlDataAdapter mydata=new SqlDataAdapter(sqlstr,objconn);
				mydata.Fill(myds,"class");
				DropDownList1.DataSource=myds.Tables["class"].DefaultView;
				DropDownList1.DataTextField=myds.Tables["class"].Columns[0].ColumnName;
				DropDownList1.DataValueField=myds.Tables["class"].Columns[0].ColumnName;
				DropDownList1.DataBind();
			
		
		}

		private void Button1_Click(object sender, System.EventArgs e)
		{
			string n=this.DropDownList1.SelectedItem.ToString();
			DataSet myds=new DataSet();
			
			string conn=System.Configuration.ConfigurationSettings.AppSettings["connstr"];
			SqlConnection objconn=new SqlConnection(conn);
				
			string sqlstr="select distinct(status),dates from kaoqin,classCourse,course,student,class,teacher where student.classID=class.classID and classCourse.courseID=course.courseID and kaoqin.stuID='"+this.TextBox1.Text+"' and course.courseName='"+n+"'and kaoqin.thID=teacher.thID and teacher.courseName=course.courseName";
	
			SqlDataAdapter mydata=new SqlDataAdapter(sqlstr,objconn);
			mydata.Fill(myds,"class");
			if(myds.Tables["class"].Rows.Count>0)
			{
				this.DataGrid1.DataSource=myds.Tables["class"].DefaultView;
				this.DataGrid1.DataBind();
			}
		}

		private void DataGrid1_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
		{
			this.DataGrid1.CurrentPageIndex=e.NewPageIndex;

		}
	}
}