AJAX :: Invalid Hexadecimal Character Returned By Webmethod Call?
Mar 8, 2010
I have a 2007 excel addin app (VS2005) which calls a web service (also developed in VS2005). When the webservice returns a large amount of data I get the following exception
System.InvalidOperationException: There is an error in XML document (1, 14493956). ---> System.Xml.XmlException: ' ', hexadecimal value 0x1C, is an invalid character. Line 1, position 14493956.
at System.Xml.XmlTextReaderImpl.Throw(Exception e)
[code]...
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Apr 24, 2010
I know how to call a simple old fashion asmx webservice webthod that returns a single value as a function return result. But what if I want to return multiple output params? My current approach is to separate the params by a dividing character and parse them on teh client. Is there a better way.
Here's how I return a single function result. How do I return multiple output values?
<asp:ScriptManager ID="ScriptManager1" runat="server">
<Services>
<asp:ServiceReference Path="WebService.asmx" />
[code]....
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May 7, 2015
I am trying to create a function that when a button is clicked it will pass all my records to my json page which will save my data. This is what i have so far
var t = this;
t.RecordsSave = function ($http) {
for (var i = 0; i <t.records.length; i++) {
var record=t.recordss[i];
var data = params( {
record: record.Number[i],
[Code] ....
I get the following error "params is not defined"
and "Cannot read property '0' of undefined"
How should i go about this. not familiar with angular js
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Mar 1, 2011
I am new to jqGrid and I have found it difficult to follow the documentation jqGrid Documentation / I cannot figure out how to call a WebMethod when setting up the JQGrid. I have been successful in making an Ajax call to get the data and then setting up the JQGrid with local data. I think its an extra step in the setup process and that I should be able to provide the path to the webmethod using the url property. The editurl property is the same way. I am never actually receiving the post to the server. Attempted JQGrid Setup
function GetData()
{
$('#list').jqGrid({
type: "POST",
url: "Default.aspx/GetUsersJSON",
datatype: "json",
height: 250,
colName: ['Username', 'Email'],
colModel: [
...
}).jqGrid(
'navGrid',
'#pager',
{
edit: true,
add: true,
del: true
});
}
WebMethod
[WebMethod]
public static string GetUsersJSON()
{
var users = new List();
using(UserAdministrationSandboxDataContext uasd = new UserAdministrationSandboxDataContext())
{
users = uasd.GetUserList();
}
JavaScriptSerializer serializer = new JavaScriptSerializer();
return serializer.Serialize(users);
}
Current Code I got it working correctly now, but I still have one final question. Why did I have to set the 'repeatitems: false' in order to display the content? Some of the caveats to get this to work include the different ways to setup the ajax request. (Ajax: type) is (jqgrid : mtype) (Ajax: contentType) is (jqgrid : ajaxGridOptions: { contentType: })
And finally understanding the documentation from the documentation on how to setup the JSONReader.
function GetUserDataFromServer()
{
$('#list').jqGrid({
url: "Default.aspx/GetUsersJSON",
mtype: 'POST',
ajaxGridOptions: { contentType: "application/json" },
datatype: "json",
serializeGridData: function (postData)
{
return JSON.stringify(postData);
},
jsonReader: {
root: function (obj) { return obj.d; },
page: function (obj) { return 1; },
total: function (obj) { return 1; },
records: function (obj) { return obj.d.length; },
id:'0',
cell:'',
repeatitems: false
},
datatype: "json",
height: 250,
colName: ['Username', 'Email'],
colModel: [
{
name: 'Username',
index: 'Username',
width: 100,
editable: true
},
{
name: 'Email',
index: 'Email',
width: 220,
editable: true
},
{
name: 'IsLockedOut',
index: 'IsLockedOut',
width: 100,
editable: true,
edittype: 'checkbox'
}
],
caption: "Users"
})
}
Web Method
[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public static List GetUsersJSON()
{
using (UserAdministrationSandboxDataContext uasd = new UserAdministrationSandboxDataContext())
{
return uasd.GetUserList();
}
}
One JSON Object from the List
{"__type":"UserAdministrationSandbox.UserData","PKID":"00000000-0000-0000-0000-000000000001","Username":"TestUser","ApplicationName":"Test","Email":"TestUser@test.com","Comment":"TestUser","Password":"D41D8CD98F00B204E9800998ECF8427E","PasswordQuestion":"Is this a blank Password?","PasswordAnswer":null,"IsApproved":true,"LastActivityDate":"/Date(1298869200000)/","LastLoginDate":"/Date(1298869200000)/","LastPasswordChangedDate":"/Date(1298869200000)/","CreationDate":"/Date(1298869200000)/","IsOnLine":false,"IsLockedOut":false,"LastLockedOutDate":"/Date(1298869200000)/","FailedPasswordAttemptCount":0,"FailedPasswordAttemptWindowStart":null,"FailedPasswordAnswerAttemptCount":null,"FailedPasswordAnswerAttemptWindowStart":null}
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Jul 6, 2010
I have 2 web pages edit.aspx and webmethods.apx. In edit.aspx there is some jquery code to get some data :
[Code]....
With this I try to get a Json object from the webmethods.aspx page :
[Code]....
I get an error back that says "Parser Error", I even did put an breakpoint on the webmethod but it is like it's never triggered. Is my url wrong if I'm in the following url :
[Code]....
Should I use something like ../WebMethods.aspx?
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Mar 25, 2010
Aspx Page:
$(document).ready(function() {
$("#btnn").click(function() {
$.ajax({
type: "POST",
url: "TestPage.aspx/emp",
data: "{}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(msg) {
}
});
});
});
CodeBehind:
public void grdload()
{
GridView1.DataSource = GetEmployee("Select * from Employee");
GridView1.DataBind();
}
[WebMethod]
public static void emp()
{
TestPage re = new TestPage();
re.grdload();
}
I Can't Gridview Data Load ? How To Make GridView Data Load?
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Jan 28, 2011
I am trying to make a jquery ajax call to a static method on the codebehind file. The problem is that ArtistManager injected by Spring is not static and I cannot use it in the static webmethod. I am looking for any ideas on how to implement this
ArtistList.aspx
[code]....
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Nov 19, 2010
How can I detect if an Ajax.ActionLink call returned any data? See below:
[Code]....
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Jan 19, 2010
is it possible to call a custom method or class before accessing webmethod from pageMethods ?
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Dec 1, 2010
I want to call MsCaptcha Control in Static WebMethod,for validating. so,I want to check mscaptcha value in javascript or jquery without refresh the page.I think it is my solution that i use JqueryAjax.
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Jan 26, 2010
i manage to add recrod via jquery ajax call to webmethod but i want to update the dropdown list once the record is been added. i dont want to use update panel. what would be the best way of doing that.
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Jul 16, 2012
I found this Article from link : [URL] .... that explains how to call server-side Method from javascript,
I used your code, my server-side function is static, public, and also I added
[System.Web.Services.WebMethod]
and
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true">
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Mar 12, 2015
Code:
[ScriptService]
public partial class Default2 : System.Web.UI.Page
{
[WebMethod]
[ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
public static string GetStudent()
[code]....
And this is my HTML.What I'm trying to do is populate the JQuery DataTable using the returned JSON Formated data of the WebMethod. But its not working,
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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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May 7, 2015
I have image button in my page below is code
<asp:ImageButton ID="IMGmanage1" runat="server" onclick="IMGmanage1_Click" ImageUrl="~/image/viewpro.png" />
protected void IMGmanage1_Click(object sender, ImageClickEventArgs e)
{
Response.Redirect("view.aspx?BehCode=" + Request.QueryString["BehCode"]);
}
but when I click on image button below error happen:Invalid postback or callback argument. Event validation is enabled using <pages enable EventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.ArgumentException: Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
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Oct 8, 2010
XP Pro,aspnet 2, IIS, Oracle I have a primary webpage that displays a tab and some summary data. The tab uses an iframe and the summary data is loaded by an async WebMethod call back to C#. The iframe page takes a short while to load depending on how much data is in there (sometimes upto 20 seconds?). The WebMethod call, or at least the content of it, is very fast. BUT, the WebMethod call won't return until basically the iframe has finished loading.
I've verified through Fiddler that the browser is initiating both requests at basically the same time. It's initiating the iframe call first followed immediately by the WebMethod call within the same second. My understanding is that browsers are limited to only two calls at once.
If I set a breakpoint at the end of my WebMethod call (even commenting out ALL it's guts so it just returns an empty string), that breakpoint won't fire until the aspnet page serving up the iframe has finished. Using threads window, I see both calls at the server. I just don't understand why the server won't actually run the Webmethod call until the first call has finished. I've searched the code looking Monitor.Enter, lock, etc to make sure nobody has inserted any other type of blocking code and I can't find anything. I've basically emptied out the WebMethod call and it just returns a string, but no matter what I do, it just won't return as fast as it can. If I comment out the iframe, then the WebMethod call returns within 2 seconds. With the iframe, it "looks" like the the webmethod call won't return until the iframe has finished.
1) Does aspnet only process one request per aspnet session id? Is it FIFO? I figured the webserver would just process requests and return each request as fast as it can.
2) What else can I do to get that summary data to return faster (but not actually loading and putting the data into the very first primary page) ?
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Sep 17, 2010
INFO: IIS 7+ .NET 4.0
I have a webservice with a webmethod
[Code]....
I call it with
[Code]....
But the "InsertUpdateCategory" only execute the last part of the call specified (the one with Id 6), the first don't get executed
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Mar 25, 2010
[WebMethod]
public static string emp()
{
return "BlaBla";
}
Aspx Page:
$(document).ready(function() {
$.get("TestPage.aspx/emp", null, function(data) {
alert(data);
})
})
Message Box Output: TestPage.aspx on the page codes
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head><title>
</title>
<style>
tr
{
background-color: red;
color: White;
}
</style>
How to make return string?
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May 19, 2010
I have a service that works great on my development box. It uses JQuery to hit my web service, and then the JSON results are sent back.
The web service is located on our basePage.cs. We didn't want to put out an external WebService for this. Our on beta box something different is happening.
The web page seems to be trying to call the web method correctly - the JSON data is being sent... but the server doesn't seem to know it's a webmethod. here's my service function (it's in our basepage.cs which inherits from Page).
[Code]....
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Mar 22, 2010
I'm having trouble getting a form working with MVC2. As soon as I change the form element to use 'enctype="multipart/form-data"' I get errors when submitting it. The code I've got creating the form is as follows:
[Code]....
With several form text field and a file upload being the only fields. Nothing too complicated!The action method that handles the form submission is as follows:
[Code]....
It's nothing too complicated either. The code that I've commented out would have inserted the image into the database, but I commented it out to see if it was causing the problem, but it's not.The error I'm getting is as follows:
Server Error in '/' Application.
Invalid character in a Base-64 string.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.FormatException: Invalid character in a Base-64 string.Source Error: [Code]....
Stack Trace: [Code]....
Version Information: Microsoft .NET Framework Version:2.0.50727.4927; ASP.NET Version:2.0.50727.4927
Obviously something is going terribly wrong here, but I'm at a complete loss as to what it is. The form works fine if I get rid of the multipart bit in the form element, but then of course it doesn't upload the image. I also get the error regardless of whether I've actually selected an image to upload, so it's not the actual image causing the error.
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Dec 3, 2010
i have a scenario where i have to remove the invalid character from price using c# code.i want the regular ex to remove the character or some thing good then this.
For Ex- my price is
"3,950,000 ( Ex. TAX )"
i want to remove "( Ex. TAX )" from the price.my scenario is that. i have to remove the any character from string except number,dot(.), and comma(,)
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Apr 7, 2010
got this error trying to view my WebSite.A name was started with an invalid character. Error processing resource 'http://localhost/lala/'. Line 1, Position 2
<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true"
-^
The virtual directory I'm creating with all default setting. Later tryed to give full access, but it did nothing.Used an emty Web application and Web Site projects and got the same error. I'm using MSVS 2010 RC with ASP.NET 4.0.
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Apr 14, 2010
[Code]....
I have the above error while deploying the svc file via IIS 7 but when I deployed it via VS 2008 everything works ok.note I have checked the web site configuration to map to asp.net 2.0 and added the handler mapping for .svc file in IIS 7 but no luck.
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Aug 16, 2012
I found this code on this site in another thread and tried it. I am passing a string of a web url such as [URL] .... and it gives me this error. How can I pass in the URL without this error?
Code:
Private Sub saveURLToImage(ByVal url As String)
If Not String.IsNullOrEmpty(url) Then
Dim content As String = ""
Dim webRequest__1 As System.Net.WebRequest = WebRequest.Create(url)
Dim webResponse As System.Net.WebResponse = webRequest__1.GetResponse()
[Code] ....
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May 15, 2010
My application is very big one. I m getting this error. I dont know where it is throwing.
I m unable to find this error. Can anyone help me and tell me the scenarios when will this exception comes.
The Stack Trace is throwing this message
System.Convert.FromBase64String(String s) at System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) at System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter.Deserialize(String serializedState) at System.Web.UI.Util.DeserializeWithAssert(IStateFormatter
formatter, String serializedState) at System.Web.UI.HiddenFieldPageStatePersister.Load()
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