Javascript - Accessing Elements Of JSON Object Without Knowing The Key Names
Feb 25, 2011
{"d":{"key1":"value1",2":"value2"}}s there any way of accessing the keys and values (in javascript) in this array without knowing what the keys are?The reason my json is structured like this is that the webmethod that I'm calling via jquery is returning a dictionary. If it's impossible to work with the above, what do I need to change about the way I'm returning the data?
Public Function Foo(ByVal Input As String) As Dictionary(Of String, String)
Dim Results As New Dictionary(Of String, String)
'code that does stuff
Results.Add(key,value)
Return Results
End Function
I use the JavaScriptSerializer class of ASP.net to serialize my object and return it to the client side. How can I deserialize the string using JavaScript?
I am creating one Json array object and trying to pass it in MVC controller action method but i am getting null paramerter; as per my knowledge json only maps .net primitive datatypes.... so it assign null value.
Note: when i have look at request object i found that there are three parameter of created array. But how to get that value as parameter of function?
I have a form with certain elements, input boxes, check boxes etc. I need to encrypt the names of these input boxes and check boxes. I'm currently using a Rijndael encryption/decryption method through c# however this is making the encrypted names too long to be passed in a post. Is there a better way to get decent encrypted names? my purpose is to have the names encrypted before the post happens so if someone views the code behind the names are already encrypted.
I have some javascript code that processes json output from asp.net web services built with framework 2.0. Now I need to support data returned from framework 3.5 web services. My javascript code assumes a list of objects as return value, which works fine in 2.0. However In framework 3.5, the list is wrapped in a "d" object. Is there any way I can remove the "d" wrapper and just return the list?
I am creating a WebUserControl in ASP.net and want to be able to access elements of that control later. When I access them though I am trying to access them together. For example, adding a CheckBox and a table to a control and then finding the CheckBox, checking whether it has been ticked and if it has been ticked, get the values from the TextBoxes.
I currently have everything loading on the page from the custom controls, but when iterating through the controls on the page, there doesn't appear to be a control of my WebUserControl type. All of the controls are there on the page, but they exist as seperate ASP.net controls.
Am I thinking about this wrong? Is there a better way to do this?
I would like to be able to do the following in the .cs file for this page:
#1. Initially "Submit News" is disabled. The admin must click "Preview News" which will update the newslabel temporarily and also enable the "Submit News" button.
#2. When the "Submit News" button is clicked, the news.txt file should be opened and whatever content is currently in the newslabel.Text will be written to news.txt. The news will then be updated for anyone to see.
Right now, if I try to do "submitnews.Enabled = false;" is does not let me because it thinks that submitnews is not in the current context. Basically I need to know how to access elements that are within a <asp:LoginView> area.
I've scenario where I want to insert data into database without post back. there are around 12 to 13 fields which i need to insert. I'm passing DTO from the client side which is actually Json object. Now the problem which i'm facing is how to convert that Json object which i got in webservice to the "class" (in my case class name is User) object.
[Code]....
In the above case AddNewUser method takes the object of User class. But i'm getting casting error. So how do I convert Json object to the "User" class object?
I have a Gridview X in which there are 6 columns(5 template columns that are text boxes and 1 bound field). The user has the option of changing the value in the text boxes annd saving them. There is one more GridView Y that displays DB values(all 6 columns are bound fields). Initially X will show the values that being shown in Y, and when user changes the values in Y,he should be able to save it. If we are trying this using OnTextChanged event of asp:Textbox, there is a postback everytime the user makes a change in any of the textboxes. Instead i want it such a way that all the changed values should get concatenated together and should be sent to the DB.
I have a page where i am creating a number of <span> elements using clientside code.
I am creating the elements using jquery like this
[Code]....
But this returns a null object everytime. I have tried this code on a span that is on the page at the beginning and it works so i guess its something to do with how im creating the control dynamically.
Is there an easy way to populate my C# Object with the JSON object passed via AJAX?
//This is the JSON Object passed to C# WEBMETHOD from the page using JSON.stringify {"user":{"name":"asdf","teamname":"b","email":"c","players":["1","2"]}} //C# WebMetod That receives the JSON Object [WebMethod] public static void SaveTeam(Object user) { } //C# Class that represents the object structure of JSON Object passed in to the WebMethod public class User { public string name { get; set; } public string teamname { get; set; } public string email { get; set; } public Array players { get; set; } }
How can I access ViewData from JSON callback. The following is my code:
public ActionResult DynamicGridData(string sidx, string sord, int page, int rows) { Fast.IMS.Search.Search mySearch = new Fast.IMS.Search.Search(session["strText"]); myResults = mySearch.ExecuteSearch();
I am trying to load the JSON data that I am getting from an aspx page into a drop down list that I have on another page but I am getting the following javascript error.
Microsoft JScript runtime error: 'SiteID' is null or not an object
The SiteID is not returning null though and I believe that is an object. The following is the code I am using to try and load the data into the drop down list:
$.getJSON('Test.aspx?DepotID=' + DepotID, function (sites) {
I have a website where I am using the JSON webservice. I have uploaded my website on the server.
Problem:
When I try to access the webservice it gives me the error as shown in below screenshot. In the below screenshot MyServices is my webservice. MyServices.asmx is the name of the file that I am trying to access.
Troubleshooting that already has been done:
I tried cleaning the bin folder and rebuilding again. But it didnt work.
As I iterate through a DataTable object, I need to check each of its DataRow objects against the items in a generic string List. I found a blog post using the List's Find method along with a delegate, but whereas that example has a separate class (Person), I'm attempting something like the following using an instance of the string object:
// My definition of the List object. List<string> lstAccountNumbers = new List<string>(); ... // I populate the List via its Add method. ... foreach (DataRow drCurrentRow in dtMyDataTable.Rows) { if (lstAccounts.Find(delegate(string sAccountNumber) { return sAccountNumber == drCurrentRow["AccountNumber"]; }) { Found_DoSomething(); } else { NotFound_DoSomethingElse(); } }
However, with this syntax I'm receiving "Cannot implicitly convert type 'string' to 'bool'" for the if block. what I'm doing wrong and how best to accomplish what I'm trying to do?
I have aspx page and in that page i registerd ascx page. i want to access the aspx page <div id = "idofdiv"> from ascx page jquery function. i have jquery function in ascx page. i want to access idofdiv in that function.
From VB.net code behind when I am trying to deserialize it it's stating that
"Expecting state 'Element'.. Encountered 'Text' with name '', namespace ''."
Deserialization code snippet:
Dim serializer = New DataContractJsonSerializer(GetType(List(Of Employee))) Dim memoryStream = New MemoryStream() Dim s = msg.Content.ReadAsString() serializer.WriteObject(memoryStream, s) memoryStream.Position = 0.......
