a_terms.aspx.cs

实验课预约系统。采用.net+access数据库实现。 管理员对学生教师有管理功能

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using ExpReserve;

public partial class A_Terms : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            Admin aAdmin = (Admin)this.Master;
            aAdmin.ManageTitle = "学期管理";
            aAdmin.MenuSelectedValue = "TermManage";
            this.fsItem.Visible = false;
            Initialize();
            this.btnDel.Attributes.Add("onclick", "return  confirm('您真的要删除吗？');");
            this.lbMsg.Text = "";
        }

    }


    #region 属性
    static int m_ColID = 1;
    #endregion


    #region 操作函数
    /// <summary>
    /// 返回所有的实验项目批次
    /// </summary>
    /// <param name="pageIndex"></param>
    /// <param name="sortExpression">要排序的字段</param>
    private void BindDisplayList(int pageIndex, string sortExpression)
    {
        lbMsg.Text = "";
        TermsList.SelectedIndex = -1;
        

        DataTable dt = SingleInitials.DbAccess.GetTermList().Tables[0];//返回所有列表

        if (sortExpression == null || sortExpression == string.Empty)
        {
            JKLib.Web.GridViewOperation.BindPagingGridView(TermsList, dt.DefaultView, pageIndex);
        }
        else
        {
            JKLib.Web.GridViewOperation.BindPagingGridView(TermsList, dt.DefaultView, pageIndex, sortExpression, true, JKLib.Web.GridViewOperation.BindPagingGridViewType.Sorting);
        }
    }

    private void Initialize()
    {
        this.BindDisplayList(0,"");
    }

    private void DisplayItem(string mID)
    {
        fsItem.Visible = true;
        if (mID == "-1")
        {
            btnDel.Visible = false;
            legendItem.InnerText = "新增";
            NewItem();
        }
        else
        {
            btnDel.Visible = true;
            legendItem.InnerText = "修改";
            LoadItem(mID);
        }
    }
   
    private bool CheckInput(ref string strError)
    {
        strError = "";
        bool retValue = true;
        if (tbxTermName.Text == "")
        {
            strError += "请输入学期名;";
            retValue = false;
        }

        if (this.tbxKeyID.Text == "-1" && SingleInitials.DbAccess.GetIsTermExists(tbxTermName.Text))//添加时候才确认
        {
            strError += "学期名已存在;";
            retValue = false;
        }

        if (dpBeginTime.Value == "")
        {
            strError += "请输入开始日期;";
            retValue = false;
        }

        if (dpEndTime.Value == "")
        {
            strError += "请输入结束日期;";
            retValue = false;
        }

        if (this.tbxKeyID.Text == "-1")//添加
        {
            if (cbIsActive.Checked)//如果设置为活动学期
            {
                if ("" != SingleInitials.DbAccess.GetActiveTerm())//已经有活动学期
                {
                    strError += "只能有一个学期为活动学期;";
                    retValue = false;
                }
            }
            
        }
        else//修改
        {
            if (cbIsActive.Checked)//如果设置为活动学期
            {
                if ("" != SingleInitials.DbAccess.GetActiveTerm())//已经有活动学期
                {
                    if (!SingleInitials.DbAccess.GetATermIsActive(tbxKeyID.Text))//活动学期不是正在修改的学期
                    {
                        strError += "只能有一个学期为活动学期;";
                        retValue = false;
                    }
                }

            }
        }
        return retValue;

    }
    private bool Save()
    {
        string errStr = "";
        if (!CheckInput(ref errStr))
        {
            lbMsg.Text = errStr;
            return false;
        }

        try
        {
            if (this.tbxKeyID.Text == "-1")
            {
                //添加
                Term aTerm = new Term();
                aTerm.TermName = this.tbxTermName.Text;
                aTerm.BeginTime = dpBeginTime.DateValue;
                aTerm.EndTime = dpEndTime.DateValue;
                aTerm.IsActive = cbIsActive.Checked.ToString();
                return SingleInitials.DbAccess.AddATerm(aTerm);
            }
            else
            {
                //修改
                Term aTerm = new Term();
                aTerm.TermName = this.tbxKeyID.Text;//不能修改学期名
                aTerm.BeginTime = dpBeginTime.DateValue;
                aTerm.EndTime = dpEndTime.DateValue;
                aTerm.IsActive = cbIsActive.Checked.ToString();
                return SingleInitials.DbAccess.EditATerm(aTerm);
            }
        }
        catch (Exception ex)
        {
            lbMsg.Text = ex.Message;
            return false;

        }
        
    }
    
    private void NewItem()
    {
        // 清空编辑界面 
        tbxTermName.Text = "";
        dpBeginTime.Value = "";
        dpEndTime.Value = "";
        cbIsActive.Checked = false;
    }

    private void LoadItem(string aTermName)
    {
        Term aTerm = SingleInitials.DbAccess.GetATerm(aTermName);
        tbxKeyID.Text = aTerm.TermName;
        tbxTermName.Text = aTerm.TermName;
        dpBeginTime.DateValue = aTerm.BeginTime;
        dpEndTime.DateValue = aTerm.EndTime;
        cbIsActive.Checked = bool.Parse(aTerm.IsActive);
    }

    #endregion


    #region 表格处理
    protected void BatchList_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        BindDisplayList(e.NewPageIndex, null);
    }
    protected void BatchList_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "TermEdit")
        {
            TermsList.SelectedIndex = int.Parse(e.CommandArgument.ToString());
            string theID = TermsList.Rows[int.Parse(e.CommandArgument.ToString())].Cells[m_ColID].Text;
            tbxKeyID.Text = theID;
            DisplayItem(theID);
        }
        
    }
    protected void BatchList_RowCreated(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.Pager)
            JKLib.Web.GridViewOperation.GridRowCreated(sender, e);
    }
    protected void BatchList_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        
    }
    protected void BatchList_Sorting(object sender, GridViewSortEventArgs e)
    {
        BindDisplayList(TermsList.PageIndex, e.SortExpression);
    }
    #endregion


    #region 列表事件处理
   
    #endregion


    #region 按钮事件
    protected void btnNewBatch_Click(object sender, EventArgs e)
    {
        this.tbxKeyID.Text = "-1";
        DisplayItem(tbxKeyID.Text);
    }
    protected void btnDel_Click(object sender, EventArgs e)
    {
        if (SingleInitials.DbAccess.GetATermIsActive(this.tbxKeyID.Text))
        {
            lbMsg.Text = "不能删除活动学期";
            return;
        }
        try
        {
            //if 
            int lastPageIndex = this.TermsList.PageIndex;
            SingleInitials.DbAccess.DeleteATerm(tbxKeyID.Text);
            BindDisplayList(0, "");//更新列表
            if (lastPageIndex < this.TermsList.PageCount)
            {
                BindDisplayList(lastPageIndex, "");//更新列表
            }
            fsItem.Visible = false;
        }
        catch (Exception ex)
        {
            lbMsg.Text = ex.Message;
        }
    }
    protected void btn_Save_Click(object sender, EventArgs e)
    {
        if (Save())
        {
            int lastPageIndex = this.TermsList.PageIndex;
            if ("-1" == this.tbxKeyID.Text)//添加
            {
                this.BindDisplayList(0, "");//更新列表
            }
            else//修改
            {
                this.BindDisplayList(lastPageIndex, "");//更新列表
            }
            
            this.fsItem.Visible = false;
        }
    }
    #endregion
}