adminseven.aspx.cs

一个系统程序

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.OleDb;

namespace KaoQin
{
	/// <summary>
	/// adminSeven 的摘要说明。
	/// </summary>
	public class adminSeven : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.WebControls.TextBox txtCode;
		protected System.Web.UI.WebControls.TextBox txtName;
		protected System.Web.UI.WebControls.Button btnCancel;
		protected System.Web.UI.WebControls.Button btnOk;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.Label info;
		protected System.Web.UI.WebControls.DataGrid data;
		protected System.Data.DataSet ds;
		protected System.Data.OleDb.OleDbDataReader reader;
		protected System.Data.OleDb.OleDbConnection con;
		protected System.Data.OleDb.OleDbCommand com;
		protected System.Data.OleDb.OleDbDataAdapter da;
	
		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(System.Convert.ToString(Session["admin"]).Equals(""))
			{
				Response.Redirect("admin.aspx");
			}
			else
			{
				string strcon="Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+Server.MapPath("message.mdb")+";User Id=admin;Password=;";
				con=new OleDbConnection(strcon);
				if(!IsPostBack)
				{	
					bind();
				}
			}
		}

		#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.data.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.data_PageIndexChanged);
			this.data.DeleteCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.data_DeleteCommand);
			this.btnOk.Click += new System.EventHandler(this.btnOk_Click);
			this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void btnOk_Click(object sender, System.EventArgs e)
		{
			if(txtCode.Text.Trim().Equals(""))
			{
				info.Text="部门编号不能为空!";
			}
			else if(txtName.Text.Trim().Equals(""))
			{
				info.Text="部门名称不能为空!";
			}
			else
			{
				info.Text="";
				string sql3="select bId from bumen where bId='"+txtCode.Text.Trim()+"'";
				int count=0;
				con.Open();
				com=new System.Data.OleDb.OleDbCommand(sql3,con);
				reader=com.ExecuteReader();
				while(reader.Read())
				{
					count++;
				}
				reader.Close();
				com.Dispose();
				con.Close();
				if(count==0)
				{
					string sql2="insert into bumen values('"+txtCode.Text.Trim()+"','"+txtName.Text.Trim()+"')";
					con.Open();
					com=new System.Data.OleDb.OleDbCommand(sql2,con);
					com.ExecuteNonQuery();
					com.Dispose();
					con.Close();
					txtCode.Text="";
					txtName.Text="";
					bind();
				}
				else
				{
					info.Text="你添加的部门编号已存在!";
				}
				con.Close();
			}
		}

		private void btnCancel_Click(object sender, System.EventArgs e)
		{
			txtCode.Text="";
			txtName.Text="";
		}

		private void data_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
		{
			data.CurrentPageIndex=e.NewPageIndex;
			bind();
		}

		private void data_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			string id=(string)data.DataKeys[(int)e.Item.ItemIndex];
			string sql4="delete from bumen where bId='"+id+"'";
			con.Open();
			com=new System.Data.OleDb.OleDbCommand(sql4,con);
			com.ExecuteNonQuery();
			com.Dispose();
			con.Close();
			bind();
		}

		public void bind()
		{
			con.Open();
			ds=new DataSet();
			string sql="select * from bumen order by bId desc";
			da=new System.Data.OleDb.OleDbDataAdapter(sql,con);
			da.Fill(ds,"bumen");
			da.Dispose();
			con.Close();
			data.DataSource=ds.Tables["bumen"].DefaultView;
			data.DataBind();
		}
	}
}