editstudent.ascx.cs

来自「电子选课系统 电子选课系统电子选课系统电子选课系统」· CS 代码 · 共 132 行

namespace Park.Member
{
	using System;
	using System.Data;
	using System.Data.SqlClient;
	using System.Drawing;
	using System.Web;
	using System.Web.UI.WebControls;
	using System.Web.UI.HtmlControls;
	using Park.Common;

	/// <summary>
	///		EditStudent 的摘要说明。
	/// </summary>
	public abstract class EditStudent : System.Web.UI.UserControl, IProcessable
	{
		protected Epico.Controls.List BelongingClass;
		public string strAccountID  = "";
		public string strName		= "";
		public string strClass		= "";

		private void Page_Load(object sender, System.EventArgs e)
		{
			GetStudentInfo();
			InitList();
		}

		void GetStudentInfo()
		{
			SqlConnection myConnection=Utils.GetConnection();

			SqlCommand myCommand = new SqlCommand("StudentSystem_Get_StudentInfo", myConnection);
			myCommand.CommandType = CommandType.StoredProcedure;

			myCommand.Parameters.Add(new SqlParameter("@id", SqlDbType.VarChar, 20));
			myCommand.Parameters["@id"].Value = Request["editid"];

			// Execute the command
			myConnection.Open();


			SqlDataReader result =  myCommand.ExecuteReader();

			if (result.Read())
			{
				strAccountID	= result["ID"].ToString();
				strName			= result["Name"].ToString();
				strClass		= result["BelongingClass"].ToString();
			}

			myCommand.Dispose();
			myConnection.Dispose();
		}

		private void InitList()
		{
			SqlConnection myConnection=Utils.GetConnection();

			SqlCommand myCommand = new SqlCommand("Member_Student_GetClasses", myConnection);

			// Mark the Command as a SPROC
			myCommand.CommandType = CommandType.StoredProcedure;

			// Execute the command
			myConnection.Open();

			SqlDataReader result =  myCommand.ExecuteReader();

			BelongingClass.DataSource = result;
			BelongingClass.Name = QueryKey.StudentSelectedClass;

			BelongingClass.TitleColumn	 = "ClassName";
			BelongingClass.ValueColumn	 = "ClassName";
			BelongingClass.SelectedIndex = strClass.Trim();

			//必须先绑定
			BelongingClass.BindData();

			myCommand.Dispose();
			myConnection.Dispose();

		}


		public void Process()
		{
			if(!this.IsPostBack) return;
			checkNull( "AccountID", "账号不能为空");
			checkNull( "Name", "姓名不能为空");
			if(((Park.MainPage)Page).HasError) return;
			bool success = MemberDB.EditStudent(getString(Request["AccountID"]),
				getString(Request["Name"]),
				getString(Request[QueryKey.StudentSelectedClass])
				);
			if(success) return;
			Utils.Error(this.Page,"数据库中已有记录");
		}

		private string getString(string val)
		{
			if ( val ==null ) return "";
			return val;
		}
		
		private void checkNull(string val,string error)
		{
			if(Request[val] == null || Request[val].Equals("")) Utils.Error(this.Page,error);
		}

		#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);
		}
		
		///		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.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
	}
}