classsetting.aspx.cs

c#开发宝典 光盘内容。本光盘主要为书中的源程序

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.OleDb;
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 StudentsMIS.DataAccess;
using StudentsMIS.CommonClassLibrary;
using StudentsMIS.Business;

namespace StudentsMIS.Web.OrganizationSettings
{
	/// <summary>
	/// ClassSetting 的摘要说明。
	/// </summary>
	public partial class ClassSetting : StudentsMIS.Security.BaseAdminPage
	{

    private ClassEntity entity = new ClassEntity();
    private ClassManager manager = new ClassManager();

    private OleDbCommand objCommand;
    private OleDbDataAdapter objAdapter = new OleDbDataAdapter();
    private DataSet ds = new DataSet();

    private void ShowMessage(string msg)
    {
      msg = msg.Replace("\'",@"\'").Replace('\"','\"');
      Response.Write("<script defer language='javascript'>alert('" + msg + "')</script>");
    }
  
		protected void Page_Load(object sender, System.EventArgs e)
		{
      if(!Page.IsPostBack)
      {
        BindDownList.Bind_CollegeList(ddListColleges);
        BindDownList.Bind_SpecialityList(ddListSpeciality,ddListColleges.SelectedValue.Trim());
        Bind_dataGridClasses();
      }
		}

    private void Bind_dataGridClasses()
    {
      string sqlStringAppend = "";
      if(ddListColleges.SelectedValue.Trim()!="0")
      {
        sqlStringAppend = " Where college_ID=@CollegeID";
        if(ddListSpeciality.SelectedValue.Trim()!="0")
        {
          sqlStringAppend += " And speciality_ID=@SpecialityID";
        }
      }
      else
      {
        if(ddListSpeciality.SelectedValue.Trim()!="0")
          sqlStringAppend += " Where speciality_ID=@SpecialityID";
      }
      objCommand  = CommandBuilder.BuildOleDbCommand("SELECT * FROM (colleges INNER JOIN speciality ON colleges.college_ID = speciality.speciality_college) INNER JOIN classes ON speciality.speciality_ID = classes.class_speciality" + sqlStringAppend);
      if(ddListColleges.SelectedValue.Trim()!="0")
        objCommand.Parameters.Add("@CollegeID",ddListColleges.SelectedValue.Trim());
      objCommand.Parameters.Add("@SpecialityID",ddListSpeciality.SelectedValue.Trim());      
      objAdapter.SelectCommand = objCommand;
      objAdapter.Fill(ds);
      dataGridClasses.DataSource = ds.Tables[0].DefaultView;
      dataGridClasses.DataBind();
      CommandCloser.CloseOleDbCommand(objCommand);
    }

		#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.dataGridClasses.ItemCreated += new System.Web.UI.WebControls.DataGridItemEventHandler(this.dataGridClasses_ItemCreated);
      this.dataGridClasses.CancelCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.dataGridClasses_CancelCommand);
      this.dataGridClasses.EditCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.dataGridClasses_EditCommand);
      this.dataGridClasses.UpdateCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.dataGridClasses_UpdateCommand);
      this.dataGridClasses.DeleteCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.dataGridClasses_DeleteCommand);

    }
		#endregion

    protected void ddListColleges_SelectedIndexChanged(object sender, System.EventArgs e)
    {
      BindDownList.Bind_SpecialityList(ddListSpeciality,ddListColleges.SelectedValue.Trim());
      Bind_dataGridClasses();
    }

    protected void ddListSpeciality_SelectedIndexChanged(object sender, System.EventArgs e)
    {
      Bind_dataGridClasses();
    }

    protected void btnAddSpeciality_Click(object sender, System.EventArgs e)
    {
      if(ddListColleges.SelectedValue.Trim() == "0")
      {
        ShowMessage("请选择班级所属学院!");
        return;
      }

      if(txtClassID.Text.Trim()=="")
      {
        ShowMessage("请输入班级编号!");
        return;
      }
      else if(!StringValidation.isLengthSetNumString(txtClassID.Text.Trim(),4))
      {
        ShowMessage("输入的班级编号必须是四位数字,请重新输入!");
        return;
      }
      else
      {
        entity.ClassID = ddListColleges.SelectedValue.Trim() + txtClassID.Text.Trim();
      }

      if(txtClassName.Text.Trim() == "")
      {
        ShowMessage("请输入班级名称!");
        return;
      }
      else
      {
        entity.ClassName = txtClassName.Text.Trim();
      }      
      
      if(ddListSpeciality.SelectedValue.Trim() == "0")
      {
        ShowMessage("请选择班级所属专业!");
        return;
      }
      else
      {
        entity.ClassSpecialityID = ddListSpeciality.SelectedValue.Trim();
      }

      if(txtHeadTeacher.Text.Trim() == "")
      {
        ShowMessage("请输入班主任名称!");
        return;
      }
      else
      {
        entity.ClassHeadTeacher = txtHeadTeacher.Text.Trim();
      }

      try
      {
        manager.Insert(entity);
        Bind_dataGridClasses();
        ShowMessage("班级添加成功!");
      }
      catch(Exception e1)
      {
        ShowMessage(e1.Message);
      }
    }

    private void dataGridClasses_EditCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
    {
      this.ViewState.Add("CollegeID",e.Item.Cells[0].Text.Trim().Substring(0,2));
      this.ViewState.Add("SpecialityID",e.Item.Cells[2].Text.Trim());
      dataGridClasses.EditItemIndex = e.Item.ItemIndex;
      Bind_dataGridClasses();
    }

    private void dataGridClasses_CancelCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
    {
      dataGridClasses.EditItemIndex = -1;
      Bind_dataGridClasses();
    }

    private void dataGridClasses_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
    {
      ListItemType itemType = (ListItemType)e.Item.ItemType;
      if (itemType == ListItemType.Item || itemType == ListItemType.AlternatingItem || itemType == ListItemType.SelectedItem || itemType == ListItemType.EditItem)
      {
        LinkButton myDeleteButton = (LinkButton)e.Item.Cells[6].Controls[0];
        myDeleteButton.Attributes.Add("onclick", "return confirm('您真的要删除此行吗？');");
      }
      if(itemType == ListItemType.EditItem)
      {
        DropDownList ddList = new DropDownList();
        BindDownList.Bind_SpecialityList(ddList,this.ViewState["CollegeID"].ToString());
        e.Item.Cells[2].Controls.Clear();
        e.Item.Cells[2].Controls.Add(ddList);
      }
    }

    private void dataGridClasses_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
    {
      entity.ClassID = e.Item.Cells[0].Text.Trim();
      entity.ClassSpecialityID = ((DropDownList)e.Item.Cells[2].Controls[0]).SelectedValue.Trim();
      entity.ClassName = ((TextBox)e.Item.Cells[3].Controls[0]).Text.Trim();
      entity.ClassHeadTeacher = ((TextBox)e.Item.Cells[4].Controls[0]).Text.Trim();
      try
      {
        manager.Update(entity);
        dataGridClasses.EditItemIndex = -1;
        Bind_dataGridClasses();
      }
      catch(Exception e1)
      {
        ShowMessage(e1.Message);
      }
    }

    private void dataGridClasses_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
    {
      try
      {
        manager.Delete(e.Item.Cells[0].Text.Trim());
        Bind_dataGridClasses();
      }
      catch(Exception e1)
      {
        ShowMessage(e1.Message);
      }
    }
	}
}