I have this code in javascript: var x = e.mapX; It gets the X-coordinate of a map. What I want to do is that I want to store this into a c# variable. I have a class named Test with an integer property X. I want to store var x into X. In the codebehind, I have this on the Page_Load: Test test = new Test(); Then I am trying this on the javascript code: var x = e.mapX;
View 16 RepliesI've begun building a bit of a framework that I wouldnt mind working with. The idea is to create a framework that makes it even easier to create CMS addons (So basically a CMS framework).
One of my goals with this project, was having all modules made within the framework automatically support version without any extra coding.
More to the point, the way that I started building this, many pieces (Lots had to do with the versioning system) became interlinked. A version Object in the code related directly to a Module Object and vice versa, therefore the class definitions for each relate to eac otherh. (So having only the Module object, i could access the versioning object and all of its properties). My issue with this is of course what happens if i have both the module and versioning objects in my code simoultaneously, resulting in having not just duplicates of the data within the code, but (perhaps) infinite amounts, killing the app.
So what im wondering is, what if my modules properties where stored within the cache? Ie if i had the Module object, and it had the property ID -- Then the data for ID would be stored in the cache within the module object. Referencing the value simply retrieves the value from the cache if it exists there, and the SQL database if it doesnt. This way, all instances of the module that may be running at the same time will have access to the same information, at the same time, and hopefully causing it to use less space in total.
I would then add a function, so that if a developer was loading a rarely used module, or dident want to occupy cache space with large amounts of data, then they could just call a Dispose function that would remove the data from the cache.
Does this method sound reasonable? I know this probably isnt what the cache is designed for -- but I cant think of any other way to do this without having an infinite loop of objects referring to each other, or causing huge discrepencies from having different instances of objects referencing values that should be the same, but arent because they are technically different instances.
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What is the difference between (Caching) and [storing] variables in session?
View 3 RepliesI've read that you can store classes directly into a session variable i.e.
Session["var"] = myclass;
My question is how the memory management works. Does it automatically serialize this into the session on the client side?
Or does it hold the data for the instance of the class in server memory, and just holds a reference in the session object?
I'm working with an asp.net application that stores most data in a database and not session. I'm wondering of the pros and cons of each and which is the better way to go. For example, you have a pretty busy site and instead of storing user specific variables in session, there is a DB table called user data and it can store all user specific data that can be accessed from any page by querying the database. Which is the better way to go, session or database?
View 4 Repliesi am trying to collect 2 variables from one hyperlink, and use those variables in the page_load to set as session. but i don't know how to collect those 2 variables
such :
<a href="javascript:;" onclick="wsChangeColor('mainData', '#FF0000','#FFE4E1');return false;" title="Change color" id="red">1</a>
i would like to collect '#FF0000','#FFE4E1' or direct set '#FF0000','#FFE4E1' to string then send to pageload, how can i do this by only clicking on it ?
whats the exact use of static variables in overall programming in .net and for asp.net...
Recently i went for the interview where interviewer asked me 2 question which i was not sure for the same..
whats the use of session object, i said sessions are the server side object, they are used when you want to store user specific data at server side, then he asked what if i want to use static variables for the same, i was mum, can anyone tell me how asp.net will behave if i store the user specific information in static variables.If i use cookies which are the best option to store the data at client side (not sensitive one), but what if user has disabled cookies on his machine, will my application would crash.
Just for an example, if I have three controls on a Master page, I would usually declare a variable for a control like this.
var elem = document.getElemntId('<%=control1.ClientID %>');
var elem2 = document.getElemntId('<%=control2.ClientID %>');
var elem3 = document.getElemntId('<%=control3.ClientID %>');
Can I do it in some form of concenation like:
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I'm using ASP.NET MVC (I'm really new to both asp.net and the asp.net mvc type projects, but trying hard to learn).
I've set up MVC with a controller so that it runs a C#.net method which;
queries an mssql db
converts it to json
returns the json string
It's called from the javascript by requesting an url with a parameter. But what I need now is for the C# part to read two integer variables from the javascript. What would be the best way to do that, and does anyone have any good examples/code that I could look at?
i am still stcuk with my project and unabale to perform calculation on my edited gridview..
here is my problem :
i have fields (f1,f2,f3, f4...) pulled from my sql data base table. into a gridview.
the "f4" field value is based on some calculation done on f1, f2 & f3 field values..
1- i need to have the same calculation done when i edit and update f1, f2 & f3 on my gridview...
more complicated..
2 -my calculation are based on a javascript function ...
a- how can i pass the fields values to the JavaScript variables...perform the calculation....then reassign back the result varibale to the f4 field ?? ..then update my gridview with the new calculation..
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I want to assign array of photos to imagearray but the following script is not working. i cant able to access variables a,i,cnlink etc in new fadeSlideShow() .how to access this outside the function and assign it to imagearray
<script type="text/javascript">
var i; var a; var cnLink; var cn;var cnSplit;
var photos = new Array();
var photoslink = new Array();
function x() {
a = document.getElementById('HiddenField4').value;
cnLink = document.getElementById('hdnLink').value;
cn = document.getElementById('HiddenField3').value;
cnSplit = cnLink.split(';');
while (i < cn) {
photoslink[i] = cnSplit[i];
photos[i] = b[i];
i++;
}
}
var mygallery2 = new fadeSlideShow({
wrapperid: "fadeshow2",
dimensions: [568, 313],
imagearray: [
photos
//<--array of images!
],
displaymode: { type: 'auto', pause: 2500, cycles: 0, wraparound: false },
persist: false, //remember last viewed slide and recall within same session?
fadeduration: 500, //transition duration (milliseconds)
descreveal: "always",
togglerid: "fadeshow2toggler"
})
</script>
For some reason it seems as though variables that I declare in javascript sometimes persist themselves across applications even when I do a response.redirect. I thought that a response.redirect would clear them out.
View 1 RepliesI have a webpage in which I declared a variable in my code-behind as:
Code : Private ok As New HiddenField
I have a javascript function that sets this variable to either "T" or "F". However, I have a server-side button control that in the click() event, it checks the "ok" variable like this:
Code:
If ok.Value = "T" Then
FormatFields()
End If
The javascript function initializes the "ok" variable to "T". It goes thru a series of field edits. When a field doesn't pass the edit, it sets the "ok" variable to "F". Either way, this variable has a value. When the code-behind event above checks the "ok" variable, it's value is "".
I am calling a javascript function from .cs file which is as below:
private string CallValuesScript()
{
StringBuilder sb = new StringBuilder();
sb.AppendLine("$(document).ready(function() {");
sb.AppendLine("DisplayValues();");
sb.AppendLine(" });");
return sb.ToString();
}
I have two integers declared at class level private int ratingLinkId = 0 ;
private int ratingValue = 0;
how I can pass these two integer values to the function "DisplayValues();" ? I have the javascript function is aspx as below:
function DisplayRatings(id, count) {
//code
}
Is there a way to assign/pass/copy a javascript variable to a server side variable in C#? For the sake of argument, let's say that I was able to parse some JSON for variables that I want to store and assign them on the client (ie. var = FirstName and var = 25 and var = someDateTime, etc) .
View 4 RepliesI have a nested ListView (Master/Detail) and want to invoke a JavaScript function in the detail ItemTemplate so that this function can call a static method on the server site and post the field update. I need to include three data variables in the function call, two of which must come from the ListItem data. The JavaScript call to SaveAnswer that is contained in a list item embedded in the inner listview does not render properly. The code must pass three variables: ThisPAQID is a public variable from the codebehind. I could probably make it a hidden variable on this page. QuestionID is a variable from the current listitem and is contained in the table cell immediately preceeding the SaveAnswer method call.
The nested listview works great, and if I dummy the PAQID and QuestionID values in the function call (e.g. SaveAnswer(1,1, this.Value), it works fine.
<asp:ListView ID="lstQuestions" runat="server" OnItemDataBound="lstQuestions_ItemDataBound">
<LayoutTemplate>
<table>[code]....
When I put a breakpoint into this code in FireFox, the break never fires. Do I need an "OnBlur" tied to this code? Clearly I am not a JavaScript wizard.
I am working with Google maps api V3. I need to get the values of the getSouthWest & getNorthEast bounds of my map. To do this the 'bounds_changed' event needs to be fired in order to get the new values. This is all good, however, I need to access these values from outside the event and passed to a server side function (more specifically, I don't want to call my server side function every time the map bounds are changed).
My code is:
//Global
var sw, nw, Searchbounds;
function myFunc(){
google.maps.event.addListener(map, 'bounds_changed', function() {
Searchbounds = map.getBounds();
sw = Searchbounds.getSouthWest();
ne = Searchbounds.getNorthEast();
});
CallServerSideWebService(sw.lat(), ne.lng(), ne.lat(), ne.lng());
}
When executing this code I get the error message sw is undefined.
From what I understand, the id of the master on an ASP.NET page is "aspnetForm". I noticed today that for some reason in one of our pages it's now "form1". What would cause this change? Where should I look for the root cause of this naming change? We've got a lot of JavaScript variables that (sign) reference "aspnetForm" that are now broken.
View 1 RepliesHow i can get a value from string using regeular expressions? Sample string:
"<div>Weight is 200 g.</div>"
I need to parse this tring to get in my variable 200 Another question about multiple variables in same string
"<div>Dimentions is 55x100x60</div>"
In this case i need to set variables
Width = 55
Height = 100
Deep = 60
I have this condition in my page_load event and it seems to be ignored, i do have it OUTSIDE of my !IsPostback condition. I need to check those sessions EVERYTIME you get to the page, regardless if its the first time on the page or if you have been on the page / site for a while.. those sessions are being set on a different page and this particular page needs those variables in order to work.. so if they dont exist they need to be sent back to the first page so they can be set.
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i am developing a website in asp.net i have created a class "Utility" in App_Code Folder this class contains a static object of another class(LoginInfo) as described below:
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This LoginInfo Class is my business object which only contains 2 properties UserID and UserName
Now what i am doing on my login page, after user authentication i am setting these properties with current logged in UserId and UserName
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I am using this CurrentUser object on my webpage to get userid and username. It works fine, but after few minutes my CurrentUser.UserID and CurrentUser.UserName is set to blank string. I am not able to figure out what is the problem. may be due to asp.net recycles.
I am building an application in ASP.NET(C#). In certain forms I have many unused Varibales (declared as global variables).
I want to know whether these variables takes any memory space when i build the application.
For instance
public string _ID;
public string _Name;
Function RenderTips(ByRef passTipName As String, ByRef passYear As String, ByRef passTipNumber As String) As String
View 10 RepliesIm having problems passing a variable from my c# code behind into my asp as part of a connection string. how do i go about passing in a variable from my code behind into my asp.
View 4 RepliesI have been reading up on this all day, and I can't find the answer (or more likely, don't understand the answers I have found) to my problem. I am completely new ASP.NET and trying to make a trasition from Classic ASP.
In classic ASP it was possible to 'pass' variables between include files. In ASP.NET includes are very different. I'll keep this simple:
I have 'header', 'content' and 'footer' pages. The header and footer are both 'includes' in the content page.
I want to be able to pass a variable from the header to the footer. Heres a snip of my code so far:
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However this errors crops up in the footer when run:
Compiler Error Message: BC30451: Name 'helloworld' is not declared.
So how do I make this variable available to the pages involved??
I imagine there is more than one way of doing this for many circumstances.