bookcontrol.aspx.cs

数据库课程设计

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 mybook
{
	/// <summary>
	/// book管理 的摘要说明。
	/// </summary>
	public class bookcontrol : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox TextBox1;
		protected System.Web.UI.WebControls.TextBox TextBox2;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.WebControls.DataGrid DataGrid1;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			string strConn="server=.;uid=sa;pwd=sa;database=mybook";
			SqlConnection myConnection=new SqlConnection();
			myConnection.ConnectionString=strConn;

			string strCommand="select * from tushu";
			SqlDataAdapter  da=new SqlDataAdapter(strCommand,myConnection);
			DataSet ds=new DataSet();
			da.Fill(ds,"scores");
			DataGrid1.DataSource=ds.Tables["scores"].DefaultView;
			DataGrid1.DataBind();
			myConnection.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.TextBox2.TextChanged += new System.EventHandler(this.TextBox2_TextChanged);
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion


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

		private void Button1_Click(object sender, System.EventArgs e)
		{
			string message=this.show();
			TextBox1.Text=message;
		}



		public SqlConnection connection()   //设置数据库连接
		{
			string Afile="server=;uid=sa;pwd=sa;database=mybook";		
			SqlConnection AconnStr=new SqlConnection(Afile);
			return AconnStr;
		}
		public void close(SqlConnection AconnStr)//关闭连接
		{
			AconnStr.Close();
		}
		public SqlDataReader selCommand(string comd,SqlConnection AconnStr) //设置数据库查询操作命令
		{
			SqlCommand Acmd=new SqlCommand(comd,AconnStr);
			SqlDataReader sdr=null;
			AconnStr.Open();
			try
			{
				//执行命令，获取数据流
				sdr=Acmd.ExecuteReader();
				return sdr;
			}
			catch(Exception e)
			{
				if(e!=null)
				{
					Console.Write("执行出错");				
				}	
				return null;		
			}
		
		}

		public string show()
		{
			SqlConnection scon=this.connection();
			string select="select * from tushu " +
				" WHERE tushuname = '" + TextBox2.Text+"'"; 
			SqlDataReader sdr=this.selCommand(select,scon);
			string info="";
			if(sdr!=null)
			{
				//按记录顺序使用数据流
				
			
				while(sdr.Read())
				{info+=sdr["id"].ToString()+"\t";
					info+=sdr["tushuno"].ToString()+"\t";
					info+=sdr["tushuname"].ToString()+"\t";
					info+=sdr["leibie"].ToString()+"\t\t";
					info+=sdr["zuozhe"].ToString()+"\t";
					info+=sdr["chubanshe"].ToString()+"\t";
info+=sdr["ceshu"].ToString()+"\t";
info+=sdr["cunfang"].ToString()+"\t";
info+=sdr["rukuriqi"].ToString()+"\t";

					info+=sdr["jianjie"].ToString()+"\n";
				
					
				}
				sdr.Close();  //关闭数据流
			}
			return info;
			
		}

		private void TextBox2_TextChanged(object sender, System.EventArgs e)
		{
		
		}


		
		}
		



	}