add_admin.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;
using System.Data.SqlClient;

namespace StudentScroeQuery.Admin
{
	/// <summary>
	/// add_admin 的摘要说明。
	/// </summary>
	public class add_admin : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox txtname;
		protected System.Web.UI.WebControls.TextBox txtpassword;
		protected System.Web.UI.WebControls.Label labmsg;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.Button Button2;
		protected System.Web.UI.WebControls.DropDownList DropDownList1;
		protected System.Web.UI.WebControls.CustomValidator CustomValidator1;
		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();
			}
		}

		#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.CustomValidator1.ServerValidate += new System.Web.UI.WebControls.ServerValidateEventHandler(this.CustomValidator1_ServerValidate);
			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)
		{
		
			if(txtname.Text!="" && txtpassword.Text!="")
			{
				string username=txtname.Text;
				string password=txtpassword.Text;
				int power=Convert.ToInt32(this.DropDownList1.SelectedValue);
				if(Page.IsValid)
				{

					try
					{
						new BLL.adminloginservice().add_admin(username,password,power);
						labmsg.Text="增加管理员成功!";
						txtname.Text="";
						txtpassword.Text="";
						bindgrid();
				

					}
					catch
					{
						labmsg.Text="对不起,操作失败!";
						txtname.Text="";
						txtpassword.Text="";
					}	
				}
				//			


			}
			else
			{
					Response.Write("<script>alert('请填写用户名和密码!!')</script>");
			}
		}
		//得到所有的管理员信息
		void bindgrid()
		{
			this.DataGrid1.DataSource=new BLL.adminloginservice().getAdmin();
			this.DataGrid1.DataBind();

		}


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

		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_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			int id=Convert.ToInt32(this.DataGrid1.DataKeys[e.Item.ItemIndex]);
			try
			{
				new BLL.adminloginservice().deladmin(id);
				bindgrid();
				Response.Write("<script>alert('删除成功!')</script>");
			}
			catch
			{
				Response.Write("<script>alert('删除失败!')</script>");
			}
			
		}

		private void DataGrid1_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
				//获取用户ID
			int id=Convert.ToInt32(this.DataGrid1.DataKeys[e.Item.ItemIndex]);
			string username=((TextBox)(e.Item.Cells[1].Controls[0])).Text;
			if(!new BLL.adminloginservice().IsDupplicateName(username))
			{
				Response.Write("<script>alert('该用户已存在，请更换其它用户名!')</script>");
				return;
			}
			try
			{
				
				new BLL.adminloginservice().updateadmin(username,id);
				this.DataGrid1.EditItemIndex=-1;
				bindgrid();
				Response.Write("<script>alert('更新成功!')</script>");
				
			}
			catch
			{
				Response.Write("<script>alert('更新失败!')</script>");
			}
		}

		private void CustomValidator1_ServerValidate(object source, System.Web.UI.WebControls.ServerValidateEventArgs args)
		{
			string username=txtname.Text;
			if(new DAL.adminlogin().IsDupplicateName(username))
			{
				args.IsValid=true;
			}
			else
			{
				args.IsValid=false;
			}
		}
	}
}