addclass.aspx.cs

一个学生管理系统的C++源程序

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 sms
{
    //该源码下载自www.51aspx.com(５１ａｓｐｘ．ｃｏｍ)

	/// <summary>
	/// addclass 的摘要说明。
	/// </summary>
	public class addclass : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox Tbx_id;
		protected System.Web.UI.WebControls.CustomValidator Cv_id;
		protected System.Web.UI.WebControls.RequiredFieldValidator Rfv_id;
		protected System.Web.UI.WebControls.TextBox Tbx_department;
		protected System.Web.UI.WebControls.DropDownList Ddl_college;
		protected System.Web.UI.WebControls.Button Btn_add;
		protected System.Web.UI.WebControls.Label Lbl_note;
		protected System.Web.UI.WebControls.TextBox Tbx_teacher;
		protected System.Web.UI.WebControls.TextBox Tbx_name;
	    SqlConnection cn;
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
			string strconn= ConfigurationSettings.AppSettings["dsn"];
			cn=new SqlConnection(strconn);
			cn.Open();
		}

		#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.Cv_id.ServerValidate += new System.Web.UI.WebControls.ServerValidateEventHandler(this.Cv_id_ServerValidate);
			this.Btn_add.Click += new System.EventHandler(this.Btn_add_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		
		private void Cv_id_ServerValidate(object source, System.Web.UI.WebControls.ServerValidateEventArgs args)
		{
			SqlCommand cm=new SqlCommand("select * from class where Class_id=@Class_id",cn);
			cm.Parameters.Add("@Class_id",SqlDbType.VarChar,50);
			cm.Parameters["@Class_id"].Value=Tbx_id.Text;
			SqlDataReader dr=cm.ExecuteReader();
			if(dr.Read())
			{
				args.IsValid=false;
			}
			else
			{
				args.IsValid=true;
			}
			cn.Close();
		}

		private void Btn_add_Click(object sender, System.EventArgs e)
		{
			SqlCommand cm=new SqlCommand("insert_class_1",cn);
			cm.CommandType=CommandType.StoredProcedure;
			cm.Parameters.Add(new SqlParameter("@Class_id",SqlDbType.VarChar,50));
			cm.Parameters["@Class_id"].Value=Tbx_id.Text;
			cm.Parameters.Add(new SqlParameter("@Class_department",SqlDbType.VarChar,50));
			cm.Parameters["@Class_department"].Value=Tbx_department.Text;
			cm.Parameters.Add(new SqlParameter("@Class_college",SqlDbType.VarChar,50));
			cm.Parameters["@Class_college"].Value=Ddl_college.SelectedItem.Text;
			cm.Parameters.Add(new SqlParameter("@Class_teacherid",SqlDbType.VarChar,50));
			cm.Parameters["@Class_teacherid"].Value=Tbx_teacher.Text;			
			cm.Parameters.Add(new SqlParameter("@Class_name",SqlDbType.VarChar,50));
			cm.Parameters["@Class_name"].Value=Tbx_name.Text;
			cm.Connection.Open();
			try
			{
				cm.ExecuteNonQuery();
				Response.Redirect("classes.aspx");
				
			}
			catch(SqlException)
			{
				Lbl_note.Text="添加失败";
				Lbl_note.Style["color"]="red";
			}
			cm.Connection.Close();
		}
	}
}