复合控件之Anthem

 

using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.ComponentModel.Design;

namespace CustomComponents
{
 /// <summary>
 /// Summary description for newcontrol.
 /// </summary>
 public class newcontrol : WebControl, INamingContainer
 {
  
  // public event EventHandler Change;
  private static readonly object EventCheck = new object();
  private static readonly object EventCancel = new object();
  Anthem.TextBox box;
  Anthem.Button addButton;
  Anthem.Button subtractButton;
  System.Web.UI.WebControls.Label title;

  public string Title
  {
   get
   {
    this.EnsureChildControls();
    return ((System.Web.UI.WebControls.Label)Controls[2]).Text;
   }
   set
   {
    this.EnsureChildControls();
    ((System.Web.UI.WebControls.Label)Controls[2]).Text = value.ToString();
   }
  }

  public int Value
  {
   get
   {
    this.EnsureChildControls();
    return Int32.Parse(((Anthem.TextBox)Controls[4]).Text);
   }
   set
   {
    this.EnsureChildControls();
    ((Anthem.TextBox)Controls[4]).Text = value.ToString();
   }
  }

  [
  Bindable(true),
  Category("Behavior"),
  DefaultValue(""),
  Description("The text to display on the box height")
  ]
  public virtual string heightvalue
  {
   get
   {
    string s = (string)ViewState["heightvalue"];
    return ((s == null) ? String.Empty : s);
   }
   set
   {
    ViewState["heightvalue"] = value;
   }
  }

  protected void OnCheck(EventArgs e)
  {
   EventHandler checkHandler = (EventHandler)Events[EventCheck];
   if (checkHandler != null)
   {
    checkHandler(this, e);
   }
  }

  protected void OnCancel(EventArgs e)
  {
   EventHandler cancelHandler = (EventHandler)Events[EventCancel];
   if (cancelHandler != null)
   {
    cancelHandler(this, e);
   }
  }

  #region Events
  [
  Category("Action"),
  Description("Raised when the user clicks the check button")
  ]
  public event EventHandler Check
  {
   add
   {
    Events.AddHandler(EventCheck, value);
   }
   remove
   {
    Events.RemoveHandler(EventCheck, value);
   }
  }

  [
  Category("Action"),
  Description("Raised when the user clicks the cancel button")
  ]
  public event EventHandler Cancel
  {
   add
   {
    Events.AddHandler(EventCancel, value);
   }
   remove
   {
    Events.RemoveHandler(EventCancel, value);
   }
  }
  #endregion

  protected override void CreateChildControls()
  {
   this.Controls.Add(new LiteralControl("<div id='sb_divall' style='position:absolute;top:0;background:#777;FILTER: alpha(opacity=60);opacity:0.6;left:0;Z-INDEX: 10001;width:100%;height:"+heightvalue+"'></div>"));
   this.Controls.Add(new LiteralControl("<div id='sb_divfull' align='center' style='Z-INDEX: 10002;border:1px solid #ffff99; LEFT: 328px; WIDTH: 513px; POSITION: absolute; TOP: 112px; HEIGHT: 208px;BACKGROUND-COLOR: #777'>"));
   
   title=new System.Web.UI.WebControls.Label();
   title.Text="Title";
   title.Width=System.Web.UI.WebControls.Unit.Percentage(100);
   title.Height=System.Web.UI.WebControls.Unit.Pixel(10);
   title.BackColor=System.Drawing.Color.FromName("#777");
   this.Controls.Add(title);

   this.Controls.Add(new LiteralControl("<br>"));

   box = new Anthem.TextBox();
   box.Text = "0";
   box.TextMode=System.Web.UI.WebControls.TextBoxMode.MultiLine;
   box.AutoUpdateAfterCallBack=true;
   box.Width=System.Web.UI.WebControls.Unit.Percentage(100);
   box.Height=System.Web.UI.WebControls.Unit.Percentage(80);
   this.Controls.Add(box);

   this.Controls.Add(new LiteralControl("<br>"));
   
   addButton = new Anthem.Button();
   addButton.Text = "确定";  
   addButton.Click += new EventHandler(this.AddBtn_Click);
   addButton.AutoUpdateAfterCallBack=true;
   this.Controls.Add(addButton);

   this.Controls.Add(new LiteralControl("&nbsp;&nbsp;&nbsp;"));

   subtractButton = new Anthem.Button();
   subtractButton.Text = "取消";
   subtractButton.AutoUpdateAfterCallBack=true;
   subtractButton.Click += new EventHandler(this.SubtractBtn_Click);
   this.Controls.Add(subtractButton);
   this.Controls.Add(new LiteralControl("</div>"));
  }
  
  private void AddBtn_Click(Object sender, EventArgs e)
  {
   OnCheck(e);
  }

  private void SubtractBtn_Click(Object sender, EventArgs e)
  {
   OnCancel(e);
  }
 }
}