flowadddocument.aspx.cs

ASP C#代码实例 适合初学人士学习使用

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
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 System.Data.SqlClient;
using OfficeAuto.Components;

namespace OfficeAuto.DesktopModules.DocumentFlow
{
	/// <summary>
	/// FlowAddDocument 的摘要说明。
	/// </summary>
	public class FlowAddDocument : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.ListBox DocList;
		protected System.Web.UI.WebControls.Button AddBtn;
		protected System.Web.UI.WebControls.Button AddAllBtn;
		protected System.Web.UI.WebControls.ListBox FlowDocList;
		protected System.Web.UI.WebControls.ImageButton deleteBtn;
		protected System.Web.UI.WebControls.Button CancelBtn;
		protected System.Web.UI.WebControls.Button FinishBtn;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			///判断用户是否登录，否则跳转到登录页面
			if(Session["UserID"] == null)
			{
				Response.Redirect("~/Default.aspx");
			}

			if(!Page.IsPostBack)
			{
				///绑定文档列表的数据
				BindDocData();
			}
		}

		private void BindDocData()
		{
			///获取数据
			OfficeAuto.Components.Document doc = new OfficeAuto.Components.Document();
			SqlDataReader recd = doc.GetDocuments();

			///绑定数据
			DocList.DataSource = recd;
			DocList.DataTextField = "Title";
			DocList.DataValueField = "DocumentID";
			DocList.DataBind();

			recd.Close();
		}

		private void AddBtn_Click(object sender, System.EventArgs e)
		{
			if(DocList.SelectedIndex > -1)
			{
				///判定文档列表中是否存在将要添加的文档
				if(IsExistUser(FlowDocList,DocList.SelectedItem) == false)
				{
					FlowDocList.Items.Add(DocList.SelectedItem);
				}
				else
				{
					Response.Write("<script>alert(\"你选择的数据项已经存在，请重新选择！\")</script>");
				}
			}
			else
			{
				Response.Write("<script>alert(\"请选择你的数据项！\")</script>");
			}

			///必须清空列表中的选项；原因在于，网页不支持同时选定两个ListBox
			ClearingSelected(FlowDocList);
		}

		/// <summary>
		/// 判定用户列表中是否存在将要添加的用户，
		/// 存在不添加，否则添加
		/// </summary>
		/// <param name="listBox" type="ListBox"></param>
		/// <param name="listItem" type="ListItem"></param>
		private bool IsExistUser(ListBox listBox,ListItem listItem)
		{
			bool isExist = false;
			if(listBox.Items.Count > 0)
			{
				for(int i = 0; i< listBox.Items.Count; i++)
				{
					///判定用户列表中是否存在将要添加的用户
					if(listItem.Text == listBox.Items[i].Text)
					{
						isExist = true;
						break;
					}
				}
			}
			return(isExist);
		}

		/// <summary>
		/// 必须清空列表中的选项；原因在于，网页不支持同时选定两个ListBox
		/// </summary>
		/// <param name="listbox"></param>
		private void ClearingSelected(ListBox listbox)
		{
			listbox.SelectedIndex = -1;
		}

		private void AddAllBtn_Click(object sender, System.EventArgs e)
		{
			///添加所有用户
			FlowDocList.Items.Clear();
			foreach(ListItem item in DocList.Items)
			{
				FlowDocList.Items.Add(item);
			}

			///必须清空列表中的选项；原因在于，网页不支持同时选定两个ListBox
			ClearingSelected(DocList);
		}

		private void deleteBtn_Click(object sender, System.Web.UI.ImageClickEventArgs e)
		{
			if(FlowDocList.SelectedIndex > -1)
			{
				///删除选择的用户
				FlowDocList.Items.Remove(FlowDocList.SelectedItem);
			}
			else
			{
				Response.Write("<script>alert(\"请选择你的数据项！\")</script>");
			}
		}

		#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.AddBtn.Click += new System.EventHandler(this.AddBtn_Click);
			this.AddAllBtn.Click += new System.EventHandler(this.AddAllBtn_Click);
			this.deleteBtn.Click += new System.Web.UI.ImageClickEventHandler(this.deleteBtn_Click);
			this.FinishBtn.Click += new System.EventHandler(this.NextBtn_Click);
			this.CancelBtn.Click += new System.EventHandler(this.CancelBtn_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void NextBtn_Click(object sender, System.EventArgs e)
		{
			if(Session[Session.SessionID + DocFlowDetails.DocFlowDetail] != null)
			{
				///获取所有接受的文档ID
				ArrayList docList = new ArrayList();
				foreach(ListItem item in FlowDocList.Items)
				{
					docList.Add(item.Value);
				}
				///更新并保存数据
				DocFlowDetails flowDetail = (DocFlowDetails)Session[Session.SessionID + DocFlowDetails.DocFlowDetail];
				flowDetail.DocumentList = docList;
				Session[Session.SessionID + DocFlowDetails.DocFlowDetail] = flowDetail;				
				
				///下一步
				Response.Redirect("FlowAddReceiver.aspx");
			}
		}

		private void CancelBtn_Click(object sender, System.EventArgs e)
		{
			///返回到创建公文流转的起始页面
			Response.Redirect("ViewFlow.aspx");
		}
	}
}