将参数传递给Web服务方法 [英] Pass parameter to Web service method

问题描述

你好，
我创建了自动完成"文本框，其中显示了特定部门的EmployeeId.

但是我给选项用户从DropDown中选择Department.我想将此选定的值传递给具有自动完成代码的Web服务.
以下是我的aspx页面中的代码:

hello,
I have created Autocomplete text box which shows EmployeeIds of perticular department.

However I am giving option user to select Department from DropDown. i want to pass this selected value to web service that has code for autocomplete.
Following is code in my aspx page:

<asp:TextBox ID="tbEmployeeID" runat="server" CssClass="textBox"></asp:TextBox>
<act:AutoCompleteExtender ID="tbEmployeeID_AutoCompleteExtender"  runat="server" ServicePath="~/EmployeeIDs.asmx" ServiceMethod="GetCompletionList" TargetControlID="tbEmployeeID" MinimumPrefixLength="1"  CompletionInterval="100" CompletionSetCount="10" ShowOnlyCurrentWordInCompletionListItem="true">
</act:AutoCompleteExtender>

如何将参数传递给Webservice?

我什至尝试从代码隐藏文件中使用会话..但是我得到一个错误，我的网络服务说"Object reference not set to an instance of an object.".

我该怎么办..
请帮帮我

谢谢

How can I pass parameter to webservice?

I even tried using Sessions from codebehind file.. but I got error I webservice saying "Object reference not set to an instance of an object.".

How can I do this..
Please help me

Thank you

推荐答案

检查这些博客
http://social.msdn.microsoft.com /Forums/zh-CN/webgadgetdevelopment/thread/176a7f0c-8b9f-4bb2-bda8-e5fb6ae82b6e/ [ http://midnightprogrammer.net/post/Calling-ASPNET-Web- Service-Using-Jquery-Part-II.aspx [ ^ ]
--NDK

check these blogs
http://social.msdn.microsoft.com/Forums/en-US/webgadgetdevelopment/thread/176a7f0c-8b9f-4bb2-bda8-e5fb6ae82b6e/[^]
http://midnightprogrammer.net/post/Calling-ASPNET-Web-Service-Using-Jquery-Part-II.aspx[^]
--NDK

您可以将ContextKey用作UseContextKey="True" ContextKey="<your department>"

You may use the ContextKey as UseContextKey="True" ContextKey="<your department>"

Public Function GetCompletionList(ByVal prefixText As String, ByVal count As Integer, ByVal contextKey As String) As String()
'Use contextKey in your query

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