updatedocument.aspx.cs

精通网络应用系统开发 光盘 该书是人民邮电出版社出版的

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Collections.Generic;

public partial class DesktopModules_Document_UpdateDocument : System.Web.UI.Page
{
    int nDocumentID = -1;
    protected void Page_Load(object sender, EventArgs e)
    {   ///获取ID的值
        if (Request.Params["DocumentID"] != null)
        {
            nDocumentID = Int32.Parse(Request.Params["DocumentID"].ToString());
        }
        if (!Page.IsPostBack)
        {   ///绑定控件的数据
            BindCategoryData();
            if (nDocumentID > -1) { BindDocumentData(nDocumentID); }
        }
        ///设置【更新】按钮的可用性
        UpdateBtn.Enabled = nDocumentID <= -1 ? false : true;
    }
    private void BindCategoryData()
    {
        CategoryM category = new CategoryM();
        category.BindCategoryTreeList(CategoryList);
    }
    private void BindDocumentData(int nDocumentID)
    {   ///获取数据
        DocumentM document = new DocumentM();
        Document recd = document.GetSingleDocument(nDocumentID);
        ///读取数据
        if (recd !=null)
        {   ///显示数据
            Desn.Text = recd.Desn;
            Body.Text = recd.Body;
            Author.Text = recd.Author;
            FromSource.Text = recd.FromSource;
            ///设置选择数据项
            ASPNET35System.SetListBoxItem(CategoryList,
                recd.CategoryID.ToString());
        }
    }

    protected void UpdateBtn_Click(object sender, EventArgs e)
    {
        ///如果页面输入内容合法
        if (Page.IsValid == true)
        {   ///定义类
            DocumentM document = new DocumentM();
            try
            {   ///修改数据
                document.UpdateDocument(nDocumentID, Desn.Text.Trim(),
                    Body.Text, Int32.Parse(CategoryList.SelectedValue),
                    Author.Text.Trim(), FromSource.Text);
                ///显示操作结果信息
                Response.Write("<script>window.alert('"
                  + ASPNET35System.OPERATIONUPDATESUCCESSMESSAGE + "')</script>");
            }
            catch (Exception ex)
            {   ///显示修改操作中的失败、错误信息
                Response.Redirect("~/DesktopModules/ErrorPage.aspx?ErrorUrl="
                    + ASPNET35System.RedirectErrorUrl(Request.RawUrl)
                    + "&ErrorMessage=" + ex.Message.Replace("\n", " "));
            }
        }

    }
    protected void ReturnBtn_Click(object sender, EventArgs e)
    {
        ///返回管理页面
        Response.Redirect("~/DesktopModules/Document/DocumentManage.aspx");

    }
}