如何在asp.net vb中的aspx页面中调用asmx页面 [英] How do I call asmx page in aspx page in asp.net vb

问题描述

 <   asp：ScriptManager     ID   =  ScriptManager1     runat   =  server >  
 <  服务 >  
 <   asp：ServiceReference    路径 < span class =code-attribute>   = 〜/ WebService.asmx < span class =code -attribute>   /  >  
 <   /服务 >  
 <   / asp：ScriptManager  >  
 < span class =code-keyword><   asp：UpdatePanel     ID   =  UpdatePanel1    runat   =  server  >  
 
 <   ContentTemplate  >  
 
 
 
 <   dx：ASPxComboBox     ID   =  combocusid    runat   = 服务器 >  
 <   / dx：ASPxComboBox  >  
 <   / ContentTemplate  >  
 <   / asp：UpdatePanel  >  
 <   asp：DropDownList     ID   =  dd2    runat   = 服务器     宽度  =  124px >  <   / asp：DropDownList  >  
 <   ajax：CascadingDropDown     ID   =  ccd1   < span class =code-attribute> runat   =  server   类别  =  id    TargetControlID   =  dd2    PromptText   = 选择    LoadingText   = 正在加载..      ServicePath   =  WebService.vb.asmx    ServiceMethod   =  methodfirst >  
 <   / ajax： CascadingDropDown  >  

我的值没有显示在下拉列表中dd2

没有值显示在我的下拉列表中



我的网络服务在浏览器中显示方法

但它没有显示在aspx页面中

任何人都可以帮我出来请在dd2中显示值

解决方案

尝试下面<登记/>
<预郎= HTML> <跨度类= 代码关键字>< <跨度类= 代码leadattribute> AJAX：CascadingDropDown <跨度class =code-attribute> ID = ccd1 runat = server

TargetControlID = dd2

类别 = id

LoadingText = 正在加载......

ServicePath = WebService.asmx

ServiceMethod = methodfirst / >

<asp:ScriptManager ID="ScriptManager1" runat="server">
                                      <Services>
                                          <asp:ServiceReference Path ="~/WebService.asmx" />
                                      </Services>
                                  </asp:ScriptManager>
                                  <asp:UpdatePanel ID="UpdatePanel1" runat="server">

                                    <ContentTemplate>



                                           <dx:ASPxComboBox ID="combocusid" runat="server">
                                 </dx:ASPxComboBox>
                                         </ContentTemplate>
                                      </asp:UpdatePanel>
                                  <asp:DropDownList ID="dd2" runat="server"  Width="124px"></asp:DropDownList>
                                  <ajax:CascadingDropDown ID="ccd1" runat="server" Category="id" TargetControlID="dd2" PromptText="Select " LoadingText="Loading .."  ServicePath="WebService.vb.asmx" ServiceMethod="methodfirst">
                                        </ajax:CascadingDropDown>

my values are not showing in dropdownlist dd2
no values are showing in my dropdownlist

my web services is showing method in browser
but its not showing in aspx page
can anyone help me out please to show values in dd2

解决方案

try below

<ajax:CascadingDropDown ID="ccd1"  runat="server"

    TargetControlID="dd2"

    Category="id"

    LoadingText="Loading .." 

    ServicePath="WebService.asmx"

    ServiceMethod="methodfirst"/>

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