st_student.aspx.cs

学生管理系统（asp.net+sql server）

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
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.Configuration;

namespace STGROUP
{
	/// <summary>
	/// student 的摘要说明。
	/// </summary>
	public class ST_student : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox st_tbx_sortid;
		protected System.Web.UI.WebControls.TextBox st_tbx_name;
		protected System.Web.UI.WebControls.Button st_btn_ok;
		protected System.Web.UI.WebControls.DataGrid st_dtg_student;
		protected System.Web.UI.WebControls.LinkButton st_lbtn_add;
		protected System.Web.UI.WebControls.Button st_btn_all;
		protected System.Web.UI.WebControls.Button st_btn_exit;
		protected System.Web.UI.WebControls.Label st_lbl_note;
		protected System.Web.UI.WebControls.Panel st_pnl_sort;
		string st_sqlstr;
		protected System.Web.UI.WebControls.Label Label1;
		SqlConnection st_conn;
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
			// 获得数据库连接字串
			string st_connstr= ConfigurationSettings.AppSettings["st_dbconn"];
			// 建立连接
			st_conn=new SqlConnection(st_connstr);	
			if(!IsPostBack) 
			ST_BindGrid();
		}

		#region Web Form Designer generated code
		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.st_btn_ok.Click += new System.EventHandler(this.st_btn_ok_Click);
			this.st_lbtn_add.Click += new System.EventHandler(this.st_lbtn_add_Click);
			this.st_btn_exit.Click += new System.EventHandler(this.st_btn_exit_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		//点击按钮st_btn_all时的动作
		private void st_btn_all_Click(object sender, System.EventArgs e)
		{  
			ST_BindGrid();
		
		}
		//点击DataGrid的导航按钮时（下侧的数字）执行下面代码
		public void DataGrid_Page(object sender,DataGridPageChangedEventArgs e)
		{
			st_dtg_student.CurrentPageIndex=e.NewPageIndex;
			ST_BindGrid();
		}
		public void DataGrid_cancel(object sender,DataGridCommandEventArgs e)
		{
			
			st_dtg_student.EditItemIndex=-1;
			ST_BindGrid();
			
		}
		public void DataGrid_edit(object sender,DataGridCommandEventArgs e)
		{
			
				st_dtg_student.EditItemIndex=(int)e.Item.ItemIndex;
		
				ST_BindGrid();
			
		}
		public void DataGrid_update(object sender,DataGridCommandEventArgs e)
		{
			//创建sql语句，实现自断更新。
			string st_sqlstr="update ST_student set ST_Student_name=@Student_name,ST_Student_sex=@Student_sex,ST_Student_nation=@Student_nation,ST_Student_birthday=@Student_birthday,ST_Student_time=@Student_time,ST_Student_classid=@Student_classid,ST_Student_home=@Student_home,ST_Student_else=@Student_else where ST_Student_id=@Student_id";
			SqlCommand st_comm=new SqlCommand(st_sqlstr,st_conn);
			try
			{
			st_comm.Parameters.Add(new SqlParameter("@Student_name",SqlDbType.VarChar,50));
			st_comm.Parameters.Add(new SqlParameter("@Student_sex",SqlDbType.Char,10));
		    st_comm.Parameters.Add(new SqlParameter("@Student_nation",SqlDbType.Char,10));
			st_comm.Parameters.Add(new SqlParameter("@Student_birthday",SqlDbType.DateTime,8));
			st_comm.Parameters.Add(new SqlParameter("@Student_time",SqlDbType.DateTime,8));
			st_comm.Parameters.Add(new SqlParameter("@Student_classid",SqlDbType.VarChar,50));
			st_comm.Parameters.Add(new SqlParameter("@Student_home",SqlDbType.VarChar,50));
			st_comm.Parameters.Add(new SqlParameter("@Student_else",SqlDbType.VarChar,50));
			st_comm.Parameters.Add(new SqlParameter("@Student_id",SqlDbType.VarChar,50));
			string st_st_colvalue=((TextBox)e.Item.Cells[1].Controls[0]).Text;
			st_comm.Parameters["@Student_name"].Value=st_st_colvalue;
			st_st_colvalue=((TextBox)e.Item.Cells[2].Controls[0]).Text;
			st_comm.Parameters["@Student_sex"].Value=st_st_colvalue;
			st_st_colvalue=((TextBox)e.Item.Cells[3].Controls[0]).Text;
			st_comm.Parameters["@Student_nation"].Value=st_st_colvalue;
			st_st_colvalue=((TextBox)e.Item.Cells[4].Controls[0]).Text;
			st_comm.Parameters["@Student_birthday"].Value=st_st_colvalue;
			st_st_colvalue=((TextBox)e.Item.Cells[5].Controls[0]).Text;
			st_comm.Parameters["@Student_time"].Value=st_st_colvalue;
			st_st_colvalue=((TextBox)e.Item.Cells[6].Controls[0]).Text;
			st_comm.Parameters["@Student_classid"].Value=st_st_colvalue;
			st_st_colvalue=((TextBox)e.Item.Cells[7].Controls[0]).Text;
			st_comm.Parameters["@Student_home"].Value=st_st_colvalue;
			st_st_colvalue=((TextBox)e.Item.Cells[8].Controls[0]).Text;
			st_comm.Parameters["@Student_else"].Value=st_st_colvalue;			
			st_comm.Parameters["@Student_id"].Value=st_dtg_student.DataKeys[(int)e.Item.ItemIndex];
			//打开数据库连接
			st_comm.Connection.Open();	
				//执行sql语句
				st_comm.ExecuteNonQuery();
				st_lbl_note.Text="编辑成功";
				st_dtg_student.EditItemIndex=-1;
			}
			catch
			{
				st_lbl_note.Text="编辑失败，请检查输入！";
				st_lbl_note.Style["color"]="red";
			}
			st_comm.Connection.Close();		
			ST_BindGrid();
			
		}
		
		public void DataGrid_delete(object sender,DataGridCommandEventArgs e)
		{
			
			string st_sqlstr="delete from ST_student where ST_Student_id=@userid";
			SqlCommand st_comm=new SqlCommand(st_sqlstr,st_conn);
			st_comm.Parameters.Add(new SqlParameter("@userid",SqlDbType.VarChar,50));
			st_comm.Parameters["@userid"].Value=st_dtg_student.DataKeys[(int)e.Item.ItemIndex];
			st_comm.Connection.Open();
			try
			{
				st_comm.ExecuteNonQuery();
				st_lbl_note.Text="删除成功";
				
			}
			catch(SqlException)
			{
				st_lbl_note.Text="删除失败";
				st_lbl_note.Style["color"]="red";
			}
			st_comm.Connection.Close();			
			ST_BindGrid();
		}

		public void ST_BindGrid()
		{  	st_sqlstr="select * from ST_student";
			SqlDataAdapter st_adp=new SqlDataAdapter(st_sqlstr,st_conn);
			DataSet st_ds=new DataSet();
			st_adp.Fill(st_ds);
			st_dtg_student.DataSource=st_ds;
			st_dtg_student.DataBind();
		}				

		private void st_btn_ok_Click(object sender, System.EventArgs e)
		{  
			
		    st_sqlstr="select * from ST_student  where ST_Student_id='"+st_tbx_sortid.Text+"'or ST_Student_name='"+st_tbx_name.Text+"'";
			SqlDataAdapter st_adp=new SqlDataAdapter(st_sqlstr,st_conn);
			DataSet st_ds=new DataSet();
			st_adp.Fill(st_ds);
			st_dtg_student.DataSource=st_ds;
			st_dtg_student.DataBind();
		}


		private void st_lbtn_add_Click(object sender, System.EventArgs e)
		{
			//将网页重定向到ST_addstudent.aspx
			Response.Redirect("ST_addstudent.aspx");
		}

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