OA系统

开发平台：
C#

SheetSequenceID.cs：源码内容
							﻿using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Design;
[assembly:TagPrefix("OThinker.H3.WorkSheet","SheetControls")]
namespace OThinker.H3.WorkSheet
{
	/// <summary>
	/// SheetSequenceID1 的摘要说明。
	/// </summary>
	/// 
	[ToolboxBitmap(typeof(SheetSequenceID),"OThinker.H3.WorkSheet.SheetSequenceID.bmp")]
	[ToolboxData("<{0}:SheetSequenceID runat=server></{0}:SheetSequenceID>")]	
	public class SheetSequenceID : System.Web.UI.WebControls.Label, ISheetControl
	{
		public SheetSequenceID()
		{
		}
        /// <summary>
        /// 默认的总长度
        /// </summary>
        public const int DefaultLength = 16;
        private int _Length = DefaultLength;
        /// <summary>
        /// 总长度
        /// </summary>
        [Bindable(true), Category("WorkSheet"), Description("总长度")]
        public int Length
        {
            get
            {
                return this._Length;
            }
            set
            {
                this._Length = value;
            }
        }
		#region ISheetControl 成员
        public virtual void LoadDataField(OThinker.H3.WorkSheet.SheetPage SheetPage)
		{
            System.DateTime date;
            long sequenceId;
            if (this.DesignMode || SheetPage.Enviroment.InstanceId == null || SheetPage.Enviroment.InstanceId == "" || SheetPage.Enviroment.InstanceId == Instance.InstanceContext.UnspecifiedID)
            {
                date = System.DateTime.Now;
                sequenceId = 0;
            }
            else
            {
                // 获得流程信息
                OThinker.H3.Instance.InstanceContext context = SheetPage.Enviroment.InstanceManager.GetInstanceContext(SheetPage.Enviroment.InstanceId);
                date = context.CreatedTime;
                sequenceId = context.SequenceID;
            }
            string dateStr = date.Year + string.Format("{0:D2}", date.Month) + string.Format("{0:D2}", date.Day);
            int len = this.Length - dateStr.Length;
            len = len > 0 ? len : 0;
            this.Text = dateStr + string.Format("{0:D" + len + "}", sequenceId);
		}
        public virtual bool ValidateDataField(
            OThinker.H3.WorkSheet.SheetPage SheetPage,
            System.Collections.Generic.List<string> Errors)
        {
            return true;
        }
        public virtual void SaveDataField(OThinker.H3.WorkSheet.SheetPage SheetPage)
		{
			
		}
		#endregion
        protected override void Render(HtmlTextWriter writer)
        {
            if (this.DesignMode)
            {
                this.LoadDataField(null);
            }
            base.Render(writer);
        }
	}
}

						