car_jilu.aspx.cs

这个是用C#做底层开发车辆管理系统

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 car1
{
	/// <summary>
	/// car_jilu 的摘要说明。
	/// </summary>
	public class car_jilu : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.DropDownList DropDownList1;
		protected System.Web.UI.WebControls.DropDownList DropDownList2;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.Button Button2;
		protected System.Web.UI.WebControls.DropDownList DropDownList3;
		protected System.Web.UI.WebControls.Button Button3;
		protected System.Web.UI.WebControls.DataGrid DataGrid1;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			if(Session["S_username"].ToString()=="")
			{
				Response.Redirect("index.aspx");
			}
			
			if(Session["S_userrule"].ToString()=="")
			{
				Response.Redirect("main1.aspx");
			}
			if(!Page.IsPostBack)
			{
				usecar_DataBind();
			}
			// 在此处放置用户代码以初始化页面
		}
		private void usecar_DataBind()
		{
			string SqlConn=System.Configuration.ConfigurationSettings.AppSettings["ConnString"];
			SqlConnection Conn=new SqlConnection(SqlConn);
			Conn.Open();
			string SqlStr1="select * from [beifen] order by id DESC";
			SqlCommand Comm=new SqlCommand(SqlStr1,Conn);
			DataSet ds=new DataSet();
			SqlDataAdapter dr=new SqlDataAdapter(SqlStr1,Conn);
			dr.Fill(ds,"beifen");
			DataGrid1.DataSource=ds.Tables["beifen"].DefaultView;
			DataGrid1.DataBind();
			DataGrid1.Columns[0].Visible=false;
			string SqlStr2="select * from [bumen]";
			SqlDataAdapter de=new SqlDataAdapter(SqlStr2,Conn);
			de.Fill(ds,"bumen");
			this.DropDownList1.DataSource=ds.Tables["bumen"].DefaultView;
			this.DropDownList1.DataTextField="type";
			this.DropDownList1.DataValueField="type";
			this.DropDownList1.DataBind();
			string SqlStr3="select car_code from [car]";
			SqlDataAdapter dw=new SqlDataAdapter(SqlStr3,Conn);
			dw.Fill(ds,"carcode");
			this.DropDownList2.DataSource=ds.Tables["carcode"].DefaultView;
			this.DropDownList2.DataTextField="car_code";
			this.DropDownList2.DataValueField="car_code";
			this.DropDownList2.DataBind();
			string SqlStr4="select name from [user] where part='院办(车队)'";
			SqlDataAdapter dq=new SqlDataAdapter(SqlStr4,Conn);
			dq.Fill(ds,"user");
			this.DropDownList3.DataSource=ds.Tables["user"].DefaultView;
			this.DropDownList3.DataTextField="name";
			this.DropDownList3.DataValueField="name";
			this.DropDownList3.DataBind();
			Conn.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.DataGrid1.ItemCreated += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemCreated);
			this.DataGrid1.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.DataGrid1_PageIndexChanged);
			this.DataGrid1.DeleteCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_DeleteCommand);
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Button2.Click += new System.EventHandler(this.Button2_Click);
			this.Button3.Click += new System.EventHandler(this.Button3_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

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

		private void DataGrid1_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			if(DataGrid1.Items.Count==1)
			{
				if(DataGrid1.CurrentPageIndex!=0)
				{
					DataGrid1.CurrentPageIndex=DataGrid1.CurrentPageIndex-1;
				}
			}
			else
			{
				string SqlStr2="delete [beifen] where id="+e.Item.Cells[0].Text+"";
				string SqlConn=System.Configuration.ConfigurationSettings.AppSettings["ConnString"];
				SqlConnection Conn=new SqlConnection(SqlConn);
				Conn.Open();
				SqlCommand Comm=new SqlCommand(SqlStr2,Conn);
				Comm.ExecuteReader();
				Conn.Close();}
			Response.Redirect("car_jilu.aspx");
		}

		private void DataGrid1_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
		{
			if(e.Item.ItemType==ListItemType.Item||e.Item.ItemType==ListItemType.AlternatingItem||e.Item.ItemType==ListItemType.EditItem)
			{
				TableCell myTableCell;
				myTableCell=e.Item.Cells[16];
				LinkButton btnDel=(LinkButton)myTableCell.Controls[0];
				btnDel.Attributes.Add("onclick","return confirm('您确定要删除这条车辆记录吗?');");
				btnDel.Text="删除";

			}
		}

		private void Button1_Click(object sender, System.EventArgs e)
		{
			string SqlConn=System.Configuration.ConfigurationSettings.AppSettings["ConnString"];
			SqlConnection Conn=new SqlConnection(SqlConn);
			Conn.Open();
			string SqlStr="select * from [beifen] where carcompany like '%"+this.DropDownList1.SelectedValue+"%' order by id DESC";
			DataSet ds=new DataSet();
			SqlDataAdapter dr=new SqlDataAdapter(SqlStr,Conn);
			dr.Fill(ds,"beifen");
			DataGrid1.DataSource=ds.Tables["beifen"].DefaultView;
			DataGrid1.DataBind();
			DataGrid1.Columns[0].Visible=false;
			Conn.Close();
		}

		private void Button2_Click(object sender, System.EventArgs e)
		{
			string SqlConn=System.Configuration.ConfigurationSettings.AppSettings["ConnString"];
			SqlConnection Conn=new SqlConnection(SqlConn);
			Conn.Open();
			string SqlStr="select * from [beifen] where carcode='"+this.DropDownList2.SelectedValue+"' order by id DESC";
			DataSet ds=new DataSet();
			SqlDataAdapter dr=new SqlDataAdapter(SqlStr,Conn);
			dr.Fill(ds,"beifen");
			DataGrid1.DataSource=ds.Tables["beifen"].DefaultView;
			DataGrid1.DataBind();
			DataGrid1.Columns[0].Visible=false;
			Conn.Close();
		}

		private void Button3_Click(object sender, System.EventArgs e)
		{
			string SqlConn=System.Configuration.ConfigurationSettings.AppSettings["ConnString"];
			SqlConnection Conn=new SqlConnection(SqlConn);
			Conn.Open();
			string SqlStr="select * from [beifen] where caruser='"+this.DropDownList3.SelectedValue+"' order by id DESC";
			DataSet ds=new DataSet();
			SqlDataAdapter dr=new SqlDataAdapter(SqlStr,Conn);
			dr.Fill(ds,"beifen");
			DataGrid1.DataSource=ds.Tables["beifen"].DefaultView;
			DataGrid1.DataBind();
			DataGrid1.Columns[0].Visible=false;
			Conn.Close();
		}

		
	}
}