admin管理.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>
	/// WebForm1 的摘要说明。
	/// </summary>
	public class WebForm1 : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox TextBox1;
		protected System.Web.UI.WebControls.TextBox TextBox2;
		protected System.Web.UI.WebControls.TextBox TextBox3;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.Button Button2;
		protected System.Web.UI.WebControls.Button Button3;
		protected System.Web.UI.WebControls.Button Button4;
		protected System.Web.UI.WebControls.TextBox TextBox4;
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.Label Label4;
		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 xyadmin";
			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.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.Button4.Click += new System.EventHandler(this.Button4_Click);
			this.DataGrid1.ItemCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_ItemCommand_1);
			this.DataGrid1.UpdateCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_UpdateCommand);
			this.DataGrid1.DeleteCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_DeleteCommand_1);
			this.DataGrid1.SelectedIndexChanged += new System.EventHandler(this.DataGrid1_SelectedIndexChanged);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button2_Click(object sender, System.EventArgs e)
		{
			string strConn="server=localhost;uid=sa;pwd=sa;database=mybook";
			SqlConnection myConnection=new SqlConnection();
			myConnection.ConnectionString=strConn;
			if(!IsPostBack)
			{
				DataGrid1.DataBind();
			}


		}

		private void Button1_Click(object sender, System.EventArgs e)
		{
			string strConn="server=.;uid=sa;pwd=sa;database=mybook";
			SqlConnection myConnection=new SqlConnection();
			myConnection.ConnectionString=strConn;
			string strCommand="insert into xyadmin  values('"+TextBox1.Text+"','"+TextBox2.Text+"','"+TextBox3.Text+"')";
			SqlCommand addScore=new SqlCommand(strCommand,myConnection);
			myConnection.Open();
			addScore.ExecuteNonQuery();
			myConnection.Close();
			DataGrid1.DataBind();

		}

		

		private void DataGrid1_SelectedIndexChanged(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 xyadmin";
			SqlDataAdapter da=new SqlDataAdapter(strCommand,myConnection);
			DataSet ds=new DataSet();
			da.Fill(ds,"scores");
			if(!IsPostBack)
			{
				DataGrid1.DataSource=ds;
				DataGrid1.DataBind();
			}

		}

		private void Button3_Click(object sender, System.EventArgs e)
		{
			string strConn="server=.;uid=sa;pwd=sa;database=mybook";
			SqlConnection myConnection=new SqlConnection();
			myConnection.ConnectionString=strConn;
			string strCommand="delete from xyadmin where id='"+TextBox4.Text+"'";
			//	Response.Write(strCommand);
			SqlCommand addScore=new SqlCommand(strCommand,myConnection);
			myConnection.Open();
			addScore.ExecuteNonQuery();
			myConnection.Close();
			//DataGrid1.DataBind();         

		}
		private void DataGrid1_ItemCommand_1(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
		
		}

		private void DataGrid1_DeleteCommand_1(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			SqlConnection myConnection = new SqlConnection();
			myConnection.ConnectionString = "uid=sa;pwd=sa;initial catalog=mybook;data source=localhost;Connect Timeout=90";
			myConnection.Open();
			string sql_Del = "DELETE FROM xyadmin " +
				" WHERE username = '" + e.Item.Cells[1].Text+"'";
			//Response.Write(sql_Del);


			SqlCommand sqlCommandDel = new SqlCommand(sql_Del,myConnection);
			sqlCommandDel.ExecuteNonQuery();			
			myConnection.Close();


			string mysql = "Select * FROM xyadmin"; 
			SqlDataAdapter myadaptor = new SqlDataAdapter(mysql,myConnection);
			DataSet ds = new DataSet();
			myadaptor.Fill(ds,"MyDataResult");
			DataView myView = ds.Tables["MyDataResult"].DefaultView;
			DataGrid1.DataSource=myView;
			DataGrid1.DataBind();
		}

		private void DataGrid1_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			switch(((LinkButton)e.CommandSource).CommandName)
			{

				case "update":
					Response.Redirect("WebForm3.aspx?firstname="+e.Item.Cells[1].Text+"&lastname="+e.Item.Cells[2].Text+"&id="+e.Item.Cells[0].Text);
					break;

					// Add other cases here, if there are multiple ButtonColumns in 
					// the DataGrid control.

				default:
					// Do nothing.
					break;

			}
		}

		private void Button4_Click(object sender, System.EventArgs e)
		{
			Response.Redirect("WebForm4.aspx");
		}

	
	
		
	}
}