inputgrade.aspx.cs

一个办公管理系统完整版

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


namespace OfficeSys.admin
{
	/// <summary>
	/// inputGrade 的摘要说明。
	/// </summary>
	public class inputGrade : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.WebControls.DropDownList DropDownList1;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.DropDownList DropDownList2;
		protected System.Web.UI.WebControls.Label Label4;
		protected System.Web.UI.WebControls.DropDownList DropDownList3;
		protected System.Web.UI.WebControls.Label Label5;
		protected System.Web.UI.WebControls.DropDownList DropDownList4;
		protected System.Web.UI.WebControls.Label Label6;
		protected System.Web.UI.WebControls.TextBox TextBox1;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.Label Label7;
		protected System.Web.UI.WebControls.DropDownList DropDownList5;
		protected System.Web.UI.WebControls.Button Button2;
		protected System.Web.UI.WebControls.RangeValidator RangeValidator1;
		protected System.Web.UI.WebControls.Label Message;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
			if(Session["id"]==null)
			{
				Response.Redirect("../login.aspx");
			}
			string strSql1="select 班级号,班级名 from 班级信息表";
			Class.DataProcess  dataProcess=new Class.DataProcess( );
			SqlDataReader reader=dataProcess.ExecuteReader(strSql1);
			
			
			if(!Page.IsPostBack)
			{
					this.DropDownList1.Items.Add(new ListItem("请选择班级","请选择班级"));
				this.DropDownList2.Items.Add(new ListItem("请选择学生","请选择学生"));
				this.DropDownList3.Items.Add(new ListItem("请选择课程","请选择课程"));
				this.DropDownList5.Items.Add(new ListItem("请选择教师","请选择教师"));
				while(reader.Read( ))
				{
					this.DropDownList1.Items.Add(new ListItem(reader.GetString(1),reader.GetString(0)));
				}
				reader.Close( );
			  
			}		
		}

		#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.DropDownList1.SelectedIndexChanged += new System.EventHandler(this.DropDownList1_SelectedIndexChanged);
			this.DropDownList3.SelectedIndexChanged += new System.EventHandler(this.DropDownList3_SelectedIndexChanged);
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Button2.Click += new System.EventHandler(this.Button2_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button1_Click(object sender, System.EventArgs e)
		{
			string studentNum=this.DropDownList2.SelectedValue.Trim( );
			string teacherNum=this.DropDownList5.SelectedValue.Trim( );
			string  gradeNum=this.DropDownList3.SelectedValue.Trim( );
			string classNum=this.DropDownList1.SelectedValue.Trim( );
			string kaoshi=this.DropDownList4.SelectedValue.Trim( );
			string sum=this.TextBox1.Text;
			
			Class.DataProcess  dataProcess=new Class.DataProcess( );
			string strSql1="select 学生号 from 成绩表 where 学生号='"+studentNum+"' and 教师号='"+teacherNum+"' and 课程号='"+gradeNum+"' and  班级号='"+classNum+"' and 考试类型='"+kaoshi+"' and 成绩='"+sum+"'";
			SqlDataReader reader=dataProcess.ExecuteReader(strSql1);
			if(reader.Read( ))
			{  
				this.Message.Text="学生成绩已经存在";
			}
			else
			{
				
				string num=dataProcess.ExecuteString(strSql1);
				
				string strSql2="insert into 成绩表 values('"+studentNum+"','"+teacherNum+"','"+gradeNum+"','"+classNum+"','"+kaoshi+"','"+sum+"')";
				if(dataProcess.ExecuteNonQuery(strSql2)!=0)
				{
					this.Message.Text="成功输入学生成绩";
					this.TextBox1.Text="";
				}
				else
				{
					this.Message.Text="输入学生成绩失败";
				}
			}
			reader.Close( );
		}

		private void DropDownList3_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			Class.DataProcess  dataProcess=new Class.DataProcess ( );
			string strSql4="select 教师号,教师名 from 教师信息表 where 教师号 in (select 教师号 from 课程表 where 课程号='"+this.DropDownList3.SelectedValue+"' and 班级号='"+this.DropDownList1.SelectedValue+"')";
			SqlDataReader reader=dataProcess.ExecuteReader(strSql4);
			while(reader.Read( ))
			{
				this.DropDownList5.Items.Add(new ListItem(reader.GetString(1),reader.GetString(0)));
			}
			reader.Close( );
		}

		private void DropDownList1_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			this.DropDownList2.Items.Clear( );
			this.DropDownList3.Items.Clear( );
			this.DropDownList2.Items.Add(new ListItem("请选择学生","请选择学生"));
			this.DropDownList3.Items.Add(new ListItem("请选择课程","请选择课程"));
			Class.DataProcess  dataProcess=new Class.DataProcess( );
			string strSql2="select 学生号,学生名 from 学生信息表 where 班级号 in (select 班级号 from 班级信息表 where 班级号='"+this.DropDownList1.SelectedValue+"')";
			SqlDataReader reader=dataProcess.ExecuteReader(strSql2);
			while(reader.Read( ))
			{
				this.DropDownList2.Items.Add(new ListItem(reader.GetString(1),reader.GetString(0)));
			}

			string strSql3="select 课程号,课程名 from 课程表 where 班级号='"+this.DropDownList1.SelectedValue+"'";
            
			reader=dataProcess.ExecuteReader(strSql3);
			while(reader.Read( ))
			{
				this.DropDownList3.Items.Add(new ListItem(reader.GetString(1),reader.GetString(0)));
			}
			reader.Close( );
		}

		private void Button2_Click(object sender, System.EventArgs e)
		{
			this.TextBox1.Text="";
			
		}
	}
}