documentmanage.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_DocumentManage : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {   ///绑定控件的数据
        if (!Page.IsPostBack)
        {
            BindCategoryData();
            if (CategoryList.Items.Count > 0) { CategoryList.SelectedIndex = 0; }
            if (CategoryList.SelectedIndex > -1)
            {
                BindDocumentData(Int32.Parse(CategoryList.SelectedValue));
            }
        }
        ///设置按钮的可用性
        AddBtn.Enabled = CategoryList.Items.Count <= 0 ? false : true;
        ///添加删除确认对话框
        deleteBtn.Attributes.Add("onclick", "return confirm('"
            + ASPNET35System.OPERATIONDELETEMESSAGE + "');");
    }
    private void BindCategoryData()
    {
        CategoryM category = new CategoryM();
        category.BindCategoryTreeList(CategoryList);
    }
    private void BindDocumentData(int nCategoryID)
    {   ///定义获取数据的类
        DocumentM document = new DocumentM();
        IList<Document> recd = document.GetDocumentByCategory(nCategoryID);
        ///设定控件的数据源
        DocumentList.DataSource = recd;
        ///设定控件的Text属性和Value属性
        DocumentList.DataTextField = "Desn";
        DocumentList.DataValueField = "DocumentID";
        ///绑定控件的数据
        DocumentList.DataBind();
        ///设置按钮的可用性
        updateBtn.Enabled = deleteBtn.Enabled = AttachmentBtn.Enabled
            = DocumentList.Items.Count <= 0 ? false : true;
    }

    protected void AddBtn_Click(object sender, EventArgs e)
    {
        ///跳转到添加页面
        Response.Redirect("~/DesktopModules/Document/AddDocument.aspx");

    }
    protected void AttachmentBtn_Click(object sender, EventArgs e)
    {
            if (DocumentList.SelectedIndex > -1)
    {   ///跳转到添加附件页面
        Response.Redirect("~/DesktopModules/Attachment/AttachmentManage.aspx?DocumentID=" + DocumentList.SelectedValue);
    }
    else
    {   ///显示操作结果信息
        Response.Write("<script>window.alert('"
            + ASPNET35System.OPERATIONNOSELECTMESSAGE + "')</script>");
    }

    }
    protected void DocumentList_SelectedIndexChanged(object sender, EventArgs e)
    {
    }
    protected void CategoryList_SelectedIndexChanged(object sender, EventArgs e)
    {
        ///重新绑定控件的数据
        if (CategoryList.SelectedIndex > -1)
        {
            BindDocumentData(Int32.Parse(CategoryList.SelectedValue));
        }
        else
        {
            DocumentList.Items.Clear();
        }
    }
    protected void deleteBtn_Click(object sender, ImageClickEventArgs e)
    {
        if (DocumentList.SelectedIndex > -1)
        {   ///定义类
            DocumentM document = new DocumentM();
            try
            {   ///删除数据
                 document.DeleteDocument( Int32.Parse(DocumentList.SelectedValue));

            }
            catch (Exception ex)
            {   ///显示删除操作中的失败、错误信息
                Response.Redirect("~/DesktopModules/ErrorPage.aspx?ErrorUrl="
                    + ASPNET35System.RedirectErrorUrl(Request.RawUrl)
                    + "&ErrorMessage=" + ex.Message.Replace("\n", " "));
            }
        }
        else
        {   ///显示操作结果信息
            Response.Write("<script>window.alert('"
                + ASPNET35System.OPERATIONNOSELECTMESSAGE + "')</script>");
        }

    }
    protected void updateBtn_Click(object sender, ImageClickEventArgs e)
    {
            if (DocumentList.SelectedIndex > -1)
    {   ///跳转到修改页面
        Response.Redirect("~/DesktopModules/Document/UpdateDocument.aspx?DocumentID=" + DocumentList.SelectedValue);
    }
    else
    {   ///显示操作结果信息
        Response.Write("<script>window.alert('"
            + ASPNET35System.OPERATIONNOSELECTMESSAGE + "')</script>");
    }

    }
}