WebDialog，谁想出来的真牛。

WebDialog
 1using System;
 2using System.ComponentModel;
 3using System.Text;
 4using System.Collections;
 5using System.Web.UI;
 6using System.Web.UI.WebControls;
 7
 8namespace PowerAsp.NET.Comtrols
 9{
10    /**//// <summary>
11    /// 
12    /// </summary>
13    /// 
14    [ToolboxItemFilter("System.Web.UI",ToolboxItemFilterType.Require),
15    Designer(typeof(PowerAsp.NET.Designer.WebDialogDesigner))
16    ]
17    public class WebDialog:Component
18    {
19        public WebDialog()
20        {
21        }
22        private enum DialogMode
23        {
24            None = 0,
25            Alert = 1
26        }
27        private Page _page = null;
28        private bool _isHooked = false;
29
30        private const string SCP_SCRIPT_START = "\n<script language=\"javascript\">\n";
31        private const string SCP_ALERT = "window.alert('{0}');\n";
32        private const string SCP_SCRIPT_END = "</script>\n";
33
34        private string _mesage = null;
35        private DialogMode _mode = DialogMode.None;
36
37        [Browsable(false),
38        DefaultValue(null)
39        ]
40        public Page _Page
41        {
42            get
43            {
44                return _page;
45            }
46            set
47            {
48                _page = value;
49            }
50        }
51
52        private void HookedPagePreRender(object sender,EventArgs args)
53        {
54            if(DialogMode.Alert ==  _mode)
55            {
56                _page.RegisterStartupScript(this.GetHashCode().ToString(),
57                    SCP_SCRIPT_START+string.Format(SCP_ALERT,_mesage)+SCP_SCRIPT_END);
58            }
59        }
60
61        private void HookPageLoad()
62        {
63            if((!_isHooked) && (_page != null))
64            {
65                _page.PreRender +=new EventHandler(HookedPagePreRender);
66                _isHooked = true;
67            }
68        }
69        public void ShowAlertDialog(string message)
70        {
71            _mode = DialogMode.Alert;
72            _mesage = message;
73            HookPageLoad();
74        }
75    }
76}
77

ComponentDesigner
 1using System;
 2using System.ComponentModel;
 3using System.ComponentModel.Design;
 4using System.Web.UI;
 5using PowerAsp.NET.Comtrols;
 6
 7namespace PowerAsp.NET.Designer
 8{
 9    /**//// <summary>
10    /// WebDialogDesigner 的摘要说明。
11    /// </summary>
12    public class WebDialogDesigner:ComponentDesigner
13    {
14        public override void Initialize(IComponent component)
15        {
16            base.Initialize (component);//要先调，不知道为啥。
17
18
19            IContainer container = Component.Site.Container;
20            foreach(IComponent comp in container.Components)
21            {
22                if(comp is Page)
23                {
24                    ((WebDialog)component)._Page = (Page)comp;
25                }
26            }  
27        }
28
29        public WebDialogDesigner()
30        {
31        }
32    }
33}
34