AJAX :: Invalid Web Service Call, Missing Value For Parameter?
Mar 2, 2010
In a web page, I call a web service (located in the sub folder WebServices) with ajax asp.netHere my aspx code:
[Code]....
My web site uses integrated windows authentication and all works fine.However, my web service doesn't need authentication and in order to not have 2 requests (because of http code 401), I've allowed anonymous access on the WebServices folder. Doing this, I get the folowing error message when I call a web method: "Invalid web service call, missing value for parameter: user"When I look at my body request with Web Development Helper, I can see {"user":"toto"}. So, I don't understand why it's not working.Another weird thing: when I run Fiddler2 instead of Web Development Helper, every thing works fine. I turn off Fiddler2, and it doesn't work any more.
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[Code] ....
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[Code]....
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Configuration;
using System.Web;
using System.Web.Services;
using System.Data;
using System.Data.SqlClient;
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using System.Xml.XPath;
using System.IO;
using System.Collections.Specialized;
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{
}
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Jan 28, 2011
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[URL]
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[Code]....
[Code]....
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Nov 17, 2010
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[Code]....
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[Code]....
So the changes i have made to the default VS2010 webservice is from this article http://sandblogaspnet.blogspot.com/2009/07/working-with-modal-popup-extender.html
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[Code]....
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May 21, 2010
I'm not able to call a service using the scriptmanager and javascript. But when I include the service into the project i call it. but when i seperate it in another project. I'm not able to call.
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<Services>
<asp:ServiceReference Path="http://localhost:2794/Service1.svc" InlineScript="false" />
[code]...
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Jan 1, 2010
I'm just learning MS ajax and am having problems getting a relatively simple test to work. I'm attempting to call a web service (of the .asmx variety) to return a very simple 3-column table to render in a dataView in an .aspx page. I've successfully created a working service and can by stepping through the service code it's getting the data correctly. The problem I'm having is that it stops with an exception in MicrosoftAjaxDebug.js on this line:
[Code]....
where my user_table contains 3 columns: user_name, user_key, user_ID. Real simple.My test.aspx page to get this data looks like this:
[Code]....
One more thing, I'm a little confused between the two downloads I've found, "MicrosoftAjaxLibrary_Preview6.zip" and "AspNetAjaxLibraryBeta0911.zip". From what I can tell, the latter contains all the old Ajax toolkit gadgets as well as the MS Ajax scripts. Is the MS Ajax download just a refresh of the ajax scripts in the Asp.Net ajax library? I've installed and am using the preview 6 scripts for my website.
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[System.Web.Script.Services.
ScriptService]
public
class
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{
ItemMainHeadMsts objItemMainHeadMsts;
DatabaseHelper objDataHelper;
[WebMethod]
public
string[] GetMainHeads(string value)
{
List<string>
oList = new
List<string
>();
objItemMainHeadMsts =
new
ItemMainHeadMsts
();
objDataHelper =
new
DatabaseHelper
();
objItemMainHeadMsts =
ItemMainHeadMstBase.SelectByFieldAuto("IMHDesc"
, value);
foreach (ItemMainHeadMst
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objItemMainHeadMsts)
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oList.Add(mainHead.IMHDesc);
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return
oList.ToArray();..........................
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Feb 22, 2011
I have this method in asp.net ajax enabled mvc service
[OperationContract]
public TestRun GetTestSuite(string testSuitName) {
TestRun testRun =
AdapterFactory.CreateTestRunAdapter().GetByTestSuiteName("testSuit");
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}
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function getTestSuite() {
$.ajax({
type: "POST",
url: "Services/TestRunService.svc/GetTestSuite",
data: '{"testSuitName" : "' + testSuiteName + '"}',
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (response) {
},
//If the call fails
error: function (xhr, textStatus, errorThrown) {
alert(errorThrown);
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}
I get undefined error. If I return string from service it works. Do I need to change dataType: "json" to something else?
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Dec 27, 2010
Some of my customers using Internet Explorer can't use my website because the call to my .net webservice failed. Under FF and Chrome no problem. For most of my customer using IE, it's working fine also but not for all...
I have isolated a call to the webservice that failed
[Code]....
I can't find why it's not always working with IE. I'm not able to get the error on my computer (even by changing security, privacy settings in IE).
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Feb 2, 2010
I have a web service/wsdl file that requires client authentication to passed through SOAP headers.
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how to call the web service method along with SOAP headers in .NET 2.0
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Nov 6, 2010
I´m using jQuery to make the ajax calls to web services. I´m not using json, I want the information in XML. If I don´t pass parameters and I make the WS parameter less it works but if I want to pass a value as parameter (I tried int and string) it doesn´t work. Here is my code:
jQuery: [Code]....
The web service
[Code]....
The error that I get from firebug is an exception System.InvalidOperationException and it says that the parameter region_id is missing.It can´t be very difficult because it works without parameters but all the information I find in internet
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Apr 4, 2011
When I was reading the blog Using jQuery to Consume ASP.NET JSON Web Services
I have seen this argument:
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Why does the ASP.NET AJAX call to a .NET Web-Service needs 3 extra HTTP requests? What are those requests? (I wonder how jQuery manages the call with lesser HTTP requests in this case).
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Dec 4, 2014
I am trying to call a web service function within my own ASP.net (code behind) using AJAX on the page.
Once i push the button to execute the JS/AJAX/codebehind - I got an error.
POST http://************/admin/Admin.aspx/getDBInformation 500 (Internal Server Error)
This is my code below that I am currently using:
Code:
<WebMethod> _
Public Shared Function getDBInformation() As String
loadDBData()
Return JsonConvert.SerializeObject(dbInfo, System.Xml.Formatting.Indented)
End Function
End Class
The code behind looks like this:
Code:
Imports System.DirectoryServices
Imports System.Security.Principal
Imports System.Net
Imports System.Drawing
Imports System.IO
Imports System.Data.SqlClient
Imports System.Web.Services
Imports Newtonsoft.Json
[Code] ......
How can I correct this issue so that I am able to call **loadDBData()** without that 500 error?
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