sysalarm.aspx.cs

毕业设计时做的,一个管理关于污染管理的, 源代码,呵呵 想想当时还真厉害,可以实现污染检测

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 gyit.Data;

using System.Configuration;


namespace itcrm.jxcManager
{
	/// <summary>
	/// SysAlarm 的摘要说明。
	/// </summary>
	public class SysAlarm : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.DropDownList DropDownList;
		string sqlstring;
		protected System.Web.UI.WebControls.Button btnDel;
		protected System.Web.UI.WebControls.DataGrid DataGrid1;
		//int bzValue;
		DBOperator db;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			DataGrid1.DataKeyField="ID";
			db =DBOperator.CreateObject((string)ConfigurationSettings.AppSettings["DSN"]);
		}

		#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.DropDownList.SelectedIndexChanged += new System.EventHandler(this.DropDownList_SelectedIndexChanged);
			this.DataGrid1.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.DataGrid1_PageIndexChanged_1);
			this.DataGrid1.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemDataBound);
			this.DataGrid1.SelectedIndexChanged += new System.EventHandler(this.DataGrid1_SelectedIndexChanged);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
//**** 绑定下拉框
		private void DropDownList_SelectedIndexChanged(object sender, System.EventArgs e)
		{
		    if(DropDownList.SelectedIndex>-1)
				BindData(DropDownList.SelectedItem.Value);
		}

		private void BindData(string who)
		{
			
			SqlConnection MyConnection = new SqlConnection("server=success;database=hg;pwd=123;user id=sa");
			switch(who)
			{
				case "t_dqcy":
					 sqlstring = "SELECT * FROM t_dqcy  ";
					break;
				case "t_mcy":
					 sqlstring = "SELECT * FROM t_mcy";
					break;
				case "t_rtcy":
					 sqlstring = "SELECT * FROM t_rtcy ";
					break;
				case "t_scy":
					 sqlstring = "SELECT * FROM t_rtcy ";
					break;
				case "t_swcy":
					 sqlstring = "SELECT * FROM t_swcy ";
					break;
				
				case "t_ycy":
					 sqlstring = "SELECT * FROM t_ycy ";
					break;
			
			}
			
			
			SqlCommand MyCommand = new SqlCommand(sqlstring, MyConnection);		
			//MyCommand.Parameters.Add("@department", SqlDbType.NVarChar, 10).Value = DropDownList.SelectedItem.Value;
			MyConnection.Open();
			SqlDataReader dr = MyCommand.ExecuteReader();
			DataGrid1.DataSource = dr;
			DataGrid1.DataBind();
			dr.Close();
			MyConnection.Close();
			Session["Table"]=dr;
			
		}

		

		private void DataGrid1_EditCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			
		}

		private void DataGrid1_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
		{
			DataGrid1.CurrentPageIndex=e.NewPageIndex;
			if(DropDownList.SelectedIndex>-1)
			BindData(DropDownList.SelectedItem.Value);

		}

		private void DataGrid1_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			
		}

		private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
		{  
			
			
			if ((e.Item.ItemType == ListItemType.Item) || (e.Item.ItemType == ListItemType.AlternatingItem) || (e.Item.ItemType == ListItemType.SelectedItem) || (e.Item.ItemType == ListItemType.EditItem))
			{  
				System.Data.Common.DbDataRecord drv = (System.Data.Common.DbDataRecord)e.Item.DataItem;
              
				if ((int)drv["Value"]  < 10)
					e.Item.BackColor = Color.Red;
			}
		}

		private void DataGrid1_SelectedIndexChanged(object sender, System.EventArgs e)
		{
		
		}

		private void DataGrid1_PageIndexChanged_1(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
		{
			DataGrid1.CurrentPageIndex=e.NewPageIndex;
			if(Session["Table"]!=null)
			{
				DataGrid1.DataSource=(DataSet)Session["Table"];
				DataGrid1.DataBind();
			}
		}

		

		

		


		
	}
}