managescore.aspx.cs

毕业设计题目,学生成绩查询系统,包括管理员和普通用户两级管理

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;

namespace StudentScroeQuery.Admin
{
	/// <summary>
	/// manageScore 的摘要说明。
	/// </summary>
	public class manageScore : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Button Button2;
		protected System.Web.UI.WebControls.TextBox txtcourse;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.TextBox txtnum;
		protected System.Web.UI.WebControls.Button Button3;
		protected System.Web.UI.WebControls.DataGrid DataGrid1;
	
		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(!Page.IsPostBack)
			{
				bindgrid();
			}
		}
		void bindgrid()
		{
			this.DataGrid1.DataSource=new BLL.score_bll().get_allscores();
			this.DataGrid1.DataBind();
			
		}

		#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.DataGrid1.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.DataGrid1_PageIndexChanged);
			this.DataGrid1.CancelCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_CancelCommand);
			this.DataGrid1.EditCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_EditCommand);
			this.DataGrid1.UpdateCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_UpdateCommand);
			this.DataGrid1.DeleteCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_DeleteCommand);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void DataGrid1_CancelCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			this.DataGrid1.EditItemIndex=-1;
			bindgrid();
		}

		private void DataGrid1_EditCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			this.DataGrid1.EditItemIndex=e.Item.ItemIndex;
			bindgrid();
		}

//		private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
//		{
//			if(e.Item.ItemType==ListItemType.EditItem)
//			{
//				DropDownList ddl=(DropDownList)e.Item.FindControl("drpcourse");
//				ddl.DataTextField="Course_Name";
//				ddl.DataValueField="Course_Id";
//				ddl.DataSource=new BLL.course_bll().get_allcourse();
//				ddl.DataBind();
//				ddl.Items.FindByValue(Convert.ToString(DataBinder.Eval(e.Item.DataItem,"Course_Id"))).Selected=true;
//				
//			}
//		}

		private void DataGrid1_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
				
//				int couid=Convert.ToInt32(((DropDownList)e.Item.FindControl("drpcourse")).SelectedValue);
				int scoreid=Convert.ToInt32(this.DataGrid1.DataKeys[e.Item.ItemIndex]);
				int score=Convert.ToInt32(((TextBox)e.Item.Cells[2].Controls[0]).Text);
			int stuid=new BLL.score_bll().getStuNum(scoreid);
			//////
			//////
			///////
			///////
//			if(new BLL.score_bll().ExistedCourse(stuid,couid))
//			{
//				Response.Write("<script>alert('该学生本门课程的成绩已存在!')</script>");
//				return;
//			}
			if(score>100 || score<0)
			{ 
				Response.Write("<script>alert('请输入一个0-100之间的数')</script>");
				return;
			}
			else
			{
			
				try
				{
					new BLL.score_bll().update_score(scoreid,score);
					this.DataGrid1.EditItemIndex=-1;
					bindgrid();
				
				}
				catch
				{
					Response.Write("更新失败!");
				}
			}

		}

		private void DataGrid1_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			int scoreid=Convert.ToInt32(this.DataGrid1.DataKeys[e.Item.ItemIndex]);
			try
			{
				new BLL.score_bll().del_score(scoreid);
				Response.Write("<script>alert('删除成功!')</script>");
				bindgrid();

			}
			catch
			{
				Response.Write("<script>alert('删除失败!')</script>");
			}
		}

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

		
	

	}
}