当前文件： HomeTeachingNet/Controls/SubmitTextbox.cs[3K，2009-6-12 11:44:15]，打开代码结构图

		            
 1using System;
 2using System.Data;
 3using System.Configuration;
 4using System.Web;
 5using System.Web.UI;
 6using System.Web.UI.WebControls;
 7using System.Web.UI.WebControls.WebParts;
 8using System.Web.UI.HtmlControls;
 9using System.ComponentModel;
10using System.Collections;
11
12namespace Controls
13...{
14    /**//// <summary>
15    /// SubmitTextbox 的摘要说明
16    /// </summary>
17    public class SubmitTextbox : TextBox
18    ...{
19        [TypeConverter(typeof(SubmitableControlConvertor)), DefaultValue(""), Category("Behavior")]
20        public string SubmitControl
21        ...{
22            get
23            ...{
24                object ret = this.ViewState["SubmitControl"];
25                if (ret != null)
26                ...{
27                    return (string)ret;
28                }
29                return string.Empty;
30            }
31            set
32            ...{
33                this.ViewState["SubmitControl"] = value;
34            }
35        }
36
37        protected override void AddAttributesToRender(HtmlTextWriter writer)
38        ...{
39            base.AddAttributesToRender(writer);
40            if (this.SubmitControl.Length > 0)
41            ...{
42                Control con = FindControl(SubmitControl);
43                if (con != null)
44                ...{
45                    string script = "if(event.keyCode == 13){document.getElementById('" + con.ClientID + "').click(); event.returnValue=false;}";
46                    writer.AddAttribute("onkeydown", script);
47                }
48            }
49        }
50    }
51
52    public class SubmitableControlConvertor : StringConverter
53    ...{
54        private object[] GetControls(IContainer container)
55        ...{
56            ComponentCollection components = container.Components;
57            ArrayList ret = new ArrayList();
58            foreach (IComponent control in components)
59            ...{
60                if (!(control is Button || control is LinkButton || control is ImageButton))
61                ...{
62                    continue;
63                }
64                Control button = (Control)control;
65                if ((button.ID != null) && (button.ID.Length != 0))
66                ...{
67                    ret.Add(string.Copy(button.ID));
68                }
69            }
70            ret.Sort(Comparer.Default);
71            return ret.ToArray();
72        }
73
74
75        public override System.ComponentModel.TypeConverter.StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
76        ...{
77            if ((context != null) && (context.Container != null))
78            ...{
79                object[] controls = this.GetControls(context.Container);
80                if (controls != null)
81                ...{
82                    return new TypeConverter.StandardValuesCollection(controls);
83                }
84            }
85            return null;
86        }
87
88        public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
89        ...{
90            return false;
91        }
92
93        public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
94        ...{
95            return true;
96        }
97    }
98
99}