car_part.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;
using System.Text;
namespace car1
{
	/// <summary>
	/// car_part 的摘要说明。
	/// </summary>
	public class car_part : System.Web.UI.Page
	{
		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)
			//{
				string SqlConn=System.Configuration.ConfigurationSettings.AppSettings["ConnString"];
				SqlConnection Conn=new SqlConnection(SqlConn);
				Conn.Open();
				string SqlStr1="select * from [bumen]";
				DataSet ds=new DataSet();
				SqlDataAdapter dr=new SqlDataAdapter(SqlStr1,Conn);
				dr.Fill(ds,"bumen");
				this.DataGrid1.DataSource=ds.Tables["bumen"].DefaultView;
				this.DataGrid1.DataBind();
				Conn.Close();
				this.DataGrid1.Columns[0].Visible=false;
			//}
			// 在此处放置用户代码以初始化页面
		}
		private void BindData()
		{
			
				string SqlConn=System.Configuration.ConfigurationSettings.AppSettings["ConnString"];
				SqlConnection Conn=new SqlConnection(SqlConn);
				Conn.Open();
				string SqlStr4="select * from [bumen]";
				DataSet ds=new DataSet();
				SqlDataAdapter dr=new SqlDataAdapter(SqlStr4,Conn);
				dr.Fill(ds,"bumen");
				this.DataGrid1.DataSource=ds.Tables["bumen"].DefaultView;
				this.DataGrid1.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.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_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 [bumen] 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_part.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[3];
				LinkButton btnDel=(LinkButton)myTableCell.Controls[0];
				btnDel.Attributes.Add("onclick","return confirm('您确定要删除这条单位信息吗?');");
				btnDel.Text="删除";
			}
		}

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

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

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

		private void ExecuteSql(string strSql)
		{
			try
			{
				string strconn = System.Configuration.ConfigurationSettings.AppSettings["ConnString"];//从Web.config中读取
				SqlConnection conn =new SqlConnection(strconn);
				SqlCommand com = new SqlCommand(strSql,conn);
				conn.Open();
				com.ExecuteNonQuery();
				conn.Close();
			} 
			catch(Exception e)
			{
				Response.Write("<script language = 'javascript'>alert('"+e.Message+"');</script>") ;
							
			}
		}
		private void DataGrid1_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
		    
			//int P_id=DataGrid1.DataKeys[e.Item.ItemIndex];//处于非编辑状态
			string strName=((TextBox)(e.Item.Cells[1].Controls[0])).Text;//处于编辑状态
			
			string strSql="update [bumen] set type='"+strName+"'where id='"+DataGrid1.DataKeys[e.Item.ItemIndex]+"'";
			ExecuteSql(strSql);
			DataGrid1.EditItemIndex=-1;
		    BindData();
		}
		
	}
}