course.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>
	/// course 的摘要说明。
	/// </summary>
	public class course : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox txtname;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.DataGrid DataGrid1;
		protected System.Web.UI.WebControls.Label labmsg;
		protected System.Web.UI.WebControls.CustomValidator CustomValidator1;
	
		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();
			}
		}

		#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.CustomValidator1.ServerValidate += new System.Web.UI.WebControls.ServerValidateEventHandler(this.CustomValidator1_ServerValidate);
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			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
		void bindgrid()
		{
			this.DataGrid1.DataSource=new BLL.course_bll().get_allcourse();
			this.DataGrid1.DataBind();
		}
		private void CustomValidator1_ServerValidate(object source, System.Web.UI.WebControls.ServerValidateEventArgs args)
		{
			string name=txtname.Text;
			if(new BLL.course_bll().isDupplicatedNameAtadd(name))
			{
				args.IsValid=true;
			}
			else
			{
				args.IsValid=false;
			}
		}

		private void Button1_Click(object sender, System.EventArgs e)
		{
			if(txtname.Text!="")
			{
				string name=txtname.Text;
				try
				{
					if(Page.IsValid)
					{
						new BLL.course_bll().add_course(name);
						bindgrid();
						Response.Write("<script>alert('添加成功!!')</script>");
						return;
					}
					else
					{
						return;
					}
					
					
				}
				catch(Exception ex)
				{
					labmsg.Text=ex.Message;
				}
			}
			else
			{
				Response.Write("<script>alert('请输入课程名称!')</script>");
			}
			
		}

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

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

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

		

		private void DataGrid1_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			int id=Convert.ToInt32(this.DataGrid1.DataKeys[e.Item.ItemIndex]);
			string name=((TextBox)e.Item.Cells[1].Controls[0]).Text;
			if(new BLL.course_bll().isDupplicatedNameAtadd(name,id)==false)
			{
				Response.Write("<script>alert('已存在同名的课程!')</script>");
				return;
			}
			try
			{
				new BLL.course_bll().update_course(id,name);
				this.DataGrid1.EditItemIndex=-1;
				bindgrid();
				
				Response.Write("<script>alert('更新成功!')</script>");
				this.txtname.Text="";

		    }
			catch
			{
				Response.Write("<script>alert('更新失败')</script>");
			}
		}

		private void DataGrid1_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			int id=Convert.ToInt32(this.DataGrid1.DataKeys[e.Item.ItemIndex]);
			try
			{
				new BLL.course_bll().del_course(id);
				labmsg.Text="删除成功!";
				bindgrid();
			}
			catch(Exception ex)
			{
				labmsg.Text=ex.Message;
			}
		}

		
	}
}