下拉SelectionChange事件里面的UpdatePanel工作

下拉SelectionChange事件里面的UpdatePanel工作..
我有三个下拉列表
1 - 国家
2 - 国
3 - 市


NBSP我的代码在下面;

NBSP
LT; dlgt;
LT; dtgt;
LT; ddgt;
LT; ContentTemplategt
NBSP NBSP DataTextField ="国家"DataValueField ="Record_Id"OnSelectedIndexChanged ="drpdwn_Country_SelectedIndexChanged"/>
LT; ASP:RequiredFieldValidator的显示="无"RUNAT ="服务器"ID ="RequiredFieldValidator9"
NBSP 初值="选择"的ControlToValidate ="drpdwn_Country"的ErrorMessage ="国家需要"
NBSP的ValidationGroup ="提交" TargetControlID ="RequiredFieldValidator9"的CssClass ="customCalloutStyle"CloseImageUrl ="images/001_051_.png"
WarningIconImageUrl =的"images/001_111.png"启用="真">
NBSP ; NBSP LT ;/ ajaxToolkit:ValidatorCalloutExtendergt;
NBSP ; LT ;/ ContentTemplategt;
NBSP LT ;/ ASP:UpdatePanelgt;
LT; ASP的UpdateProgress编号="updtprgrs_Country"RUNAT ="服务器"AssociatedUpdatePanelID的="updtpnl_Country"GT
LT; ProgressTemplategt;
LT; D​​IV风格="保证金左:174px;保证金顶:28px;的位置是:绝对的"GT
LT IMG ALT ="请等待......" SRC ="images/84.gif"/>
NBSP LT ;/ divgt;
LT ;/ ProgressTemplategt;
LT ;/ ASP:UpdateProgressgt;
NBSP ; LT ;/ ddgt;
LT ;/ dlgt;
LT; dlgt;
LT; dtgt;
LT; ddgt;
NBSP LT; ContentTemplategt;
DataTextField ="国家"DataValueField ="Record_Id"OnSelectedIndexChanged ="drpdwn_State_SelectedIndexChanged"
元的ResourceKey ="drpdwn_StateResource1"/>
NBSP NBSP 初值="选择"的ControlToValidate ="drpdwn_State"的ErrorMessage ="国家规定"
NBSP 的ValidationGroup ="提交" LT; ajaxToolkit:ValidatorCalloutExtender ID ="ValidatorCalloutExtender1"RUNAT ="服务器"
TargetControlID ="RequiredFieldValidator5"的CssClass ="customCalloutStyle"CloseImageUrl ="images/001_051_.png"
WarningIconImageUrl =的"images/001_111.png"启用="真">
NBSP ; NBSP LT ;/ ajaxToolkit:ValidatorCalloutExtendergt;
NBSP ; LT ;/ ContentTemplategt;
NBSP LT ;/ ASP:UpdatePanelgt;
LT; ASP的UpdateProgress编号="updtprgrs_State"RUNAT ="服务器"AssociatedUpdatePanelID的="updtpnl_State"GT
LT; ProgressTemplategt;
LT; D​​IV风格="保证金左:174px;保证金顶:28px;的位置是:绝对的"GT
LT IMG ALT ="请等待......" SRC ="images/84.gif"/>
NBSP LT ;/ divgt;
LT ;/ ProgressTemplategt;
LT ;/ ASP:UpdateProgressgt;
NBSP ; LT ;/ ddgt;
LT ;/ dlgt;
LT; dlgt;
LT; dtgt;

LT ;/ dtgt; {BR } NBSP LT; ddgt;
LT; ASP:DropDownList的ID ="drpdwn_District"宽度="155px"DataTextField ="市"DataValueField =的"Record_Id"
RUNAT ="服务器"荟萃的ResourceKey =的"drpdwn_DistrictResource1"GT
LT ;/ ASP:DropDownListgt
NBSP的ControlToValidate ="drpdwn_District"初值="选择"的ErrorMessage = "城市必需"
NBSP的ValidationGroup ="提交" TargetControlID ="RequiredFieldValidator6"的CssClass ="customCalloutStyle"CloseImageUrl，="images/001_051_.png"
WarningIconImageUrl =的"images/001_111.png"启用="真"GT
NBSP LT ;/ ajaxToolkit:ValidatorCalloutExtendergt;
LT ;/ ddgt; {BR } NBSP LT ;/ dlgt;
NBSP



Coutry下拉选择改变工作的很好，但别人没有。阿卜杜勒wahab.o:89 |邮编