using?System;
using?System.Data;
using?System.Configuration;
using?System.Web;
using?System.Web.UI;
using?System.Web.UI.WebControls;
using?System.Web.UI.WebControls.WebParts;
using?System.Web.UI.HtmlControls;
using?System.ComponentModel;
using?System.Collections;

namespace?Controls
{
????///?

????///?SubmitTextbox?的摘要說明
????///?

????public?class?SubmitTextbox?:?TextBox
????{
????????[TypeConverter（typeof（SubmitableControlConvertor））?DefaultValue（““）?Category（“Behavior“）]
????????public?string?SubmitControl
????????{
????????????get
????????????{
????????????????object?ret?=?this.ViewState[“SubmitControl“];
????????????????if?（ret?!=?null）
????????????????{
????????????????????return?（string）ret;
????????????????}
????????????????return?string.Empty;
????????????}
????????????set
????????????{
????????????????this.ViewState[“SubmitControl“]?=?value;
????????????}
????????}

????????protected?override?void?AddAttributesToRender（HtmlTextWriter?writer）
????????{
????????????base.AddAttributesToRender（writer）;
????????????if?（this.SubmitControl.Length?>?0）
????????????{
????????????????Control?con?=?FindControl（SubmitControl）;
????????????????if?（con?!=?null）
????????????????{
????????????????????string?script?=?“if（event.keyCode?==?13）{document.getElementById（‘“?+?con.ClientID?+?“‘）.click（）;?event.returnValue=false;}“;
????????????????????writer.AddAttribute（“onkeydown“?script）;
????????????????}
????????????}
????????}
????}

????public?class?SubmitableControlConvertor?:?StringConverter
????{
????????private?object[]?GetControls（IContainer?container）
????????{
????????????ComponentCollection?components?=?container.Components;
????????????ArrayList?ret?=?new?ArrayList（）;
????????????foreach?（IComponent?control?in?components）
????????????{
????????????????if?（!（control?is?Button?||?control?is?linkButton?||?control?is?ImageButton））
????????????????{
????????????????????continue;
????????????????}
????????????????Control?button?=?（Control）control;
????????????????if?（（button.ID?!=?null）?&&?（button.ID.Length?!=?0））
????????????????{
????????????????????ret.Add（string.Copy（button.ID））;
????????????????}
????????????}
????????????ret.Sort（Comparer.Default）;
????????????return?ret.ToArray（）;
????????}


????????public?override?System.ComponentModel.TypeConverter.StandardValuesCollection?GetStandardValues（ITypeDescriptorContext?context）
????????{
????????????if?（（context?!=?null）?&&?（context.Container?!=?null））
????????????{
????????????????object[]?controls?=?this.GetControls（context.Container）;
????????????????if?（controls?!=?null）
????????????????{
????????????????????return?new?TypeConverter.StandardValuesCollection（controls）;
????????????????}
????????????}
????????????return?null;
????????}

????????public?override?bool?GetStandardValuesExclusive（ITypeDescriptorContext?context）
????????{
????????????return?false;
????????}

????????public?

?屬性????????????大小?????日期????時間???名稱
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