i am using this Page.ClientScript.RegisterStartupScript() to call a javascript function from vb code behind , and this works fine with me My question is how can i send variables from the code behind to the javascript function here is what i have tried so far :
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Can I send an object from client-side javascript to server-side code via ASP.NET ?
View 5 RepliesUsing the following script:
$("#some_button").click(function() {
var changed = [];
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I need to send back the id, the old value from _1 and the new value from _0 back to the server. What is the best way to format this data so I can easily extract the data from the server side so I can easily email someone for example to let them know which textboxes have changed, what the old values were, and what the new values are
At the serverside level, I am using .NET-3.5 (VB). I know how to send the data bacl. and how to email the data, I just wanted to know how to best format the data at clientside before sending it back. I could have upto 50 sets of id, old, and new values to send back. Sorry for not making that clear earlier.
Example:
How can I modify the script above to generate this?
[
{
"id": "name_0",
"new": "text",
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Ultimately, what I want to accomplish is an AJAX-based messaging system. I already have a database table for messages, and an ASPX to add new messages (and declare old messages no longer relevant).
The current messaging system simply polls the server every 15 seconds, and re-pulls the current message set.
What I am looking to do is: On $(document).ready(), register an ajax callback function that listens for a server-side event (e.g., MessagesUpdated) On table insert/update, fire MessagesUpdated server-side.
This way, whenever the table is updated (or new records added), any clients listening know that new data is available and can re-poll the server then.
Ideally, I'd also like to make the new data available as an event argument (to minimize re-polling the db).
I can find references to something like this in other languages, but I cannot find any actual code examples to get me started.
Assuming this is possible to do via .Net, can anyone help get me started on this?
I'm using the 2.0 Framework. Also while I added a VB.Net tag, I can read C# reasonably well, so please feel free to post in either language.
I am currently in the process of converting old "Web 1.0" code to meet current standardsIs there a better way to generate and append a client-side script other than appending a plethora of lines to a StringBuilder and then registering it to the page via ClientScript.RegisterStartupScript(Me.GetType(), "startUpScript", strScript)?Is there any other way (besides putting all of this into a global .js file) that this example can be improved? If including this into the main .js file is the "best practice" alternative, then why?
Dim lsbScript As New Text.StringBuilder
lsbScript.Append(vbCrLf)
lsbScript.Append("<script language=""javascript>""" & vbCrLf)
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I've got a bunch if labels that are changed as a user inputs data into a form of mine. The Labels are changes with js on the client side. I then after all the submission are in put use a vb script to pull the string values from these labels. The problem is the vb net part is not reading the new values of these labels. Anyway I can get it to read the new values? I have over 40 labels.
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The problem im having is that I have a table that when a user click on a button it adds a row to the table via javascript, which works fine. The problem is that if a user need to update other data the user click another button which refreshes the page and all rows the user created in the table are deleted. My question is what can I do to make the rows not to be deleted once the page is refreshed? I know some might think, just not refresh the page, but there is to much data that has to be displayed and a new query has to be generated to grab the data.
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I have a Server side variable by the following code
Dim mgps As New Text.StringBuilder
Public ReadOnly Property GPS() As String
Get
Return mgps.ToString
End Get
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I have a Server side variable by the following code
Dim mgps As New Text.StringBuilder
Public ReadOnly Property GPS() As String
Get[code]..........
and replace the store_locations with GPS but my map become empty.
Currently, in my web application I have a listbox that gets populated client side (via java script) with a set of ids -- we'll call this page 1. Server side, I am populating a variable with the ids and passing it through a query string to another page -- we'll call it page 2. Now, I have a previous button on page2 which allows me to go to page 1. I'm trying to figure out how to repopulate the listbox on page 1 with the values previously selected. I was thinking of just storing the set of ids in a session variable and using it client side to repopulate the list box. Can anyone advise on how to access a session variable client side?[code]...
View 1 RepliesCurrently, in my web application I have a listbox that gets populated client side (via java script) with a set of ids -- we'll call this page 1. Server side, I am populating a variable with the ids and passing it through a query string to another page -- we'll call it page 2. Now, I have a previous button on page2 which allows me to go to page 1. I'm trying to figure out how to repopulate the listbox on page 1 with the values previously selected. I was thinking of just storing the set of ids in a session variable and using it client side to repopulate the list box. Can anyone advise on how to access a session variable client side? Here's some snippets of my code...
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How can i call a jquery method from vb sub routine?My code is when it returns false, the div which contains an alert message will show. Her'es my code, but its not working:
If res = Nothing Then
Page.ClientScript.RegisterClientScriptBlock(Me.GetType(), "PopupMessage", "$('.styleError').toggle('5000');", True)
End IF
Code of my web page.I made changes according to ur suggestions but title is invisible or not displaying what has missed by me [code]...
View 1 RepliesI have a variable that gets a value in a js function. I need to get its value as a double into a vb.net variable. I have tried putting the variable into a label then grabbing it from the label in vb.net as shown in the code below:
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I have web page with four grid views. Each grid is hidden under a div tag. Whenever user clicks on div the data grid corresponding to the div is shown. I have binded data to the grid views at the page load only, since the data size is huge I cannot load the data binding at the page as the time taking to page load is huge. I was thinking a way that grid view gets data loaded only when user clicks on the corresponding div tag
View 2 RepliesMotherTongueTxtBox.Attributes.Add("onblur","val_Length(MotherTongueTxtBox.text,"hi friends",Length);")
in the above statement val_length s a javascript function in tat function the first parameter shd b the contents of the text box ,the second parameter s a string type, is the statement correct i think it s wrong can u suggest a correct valid statement
I am struckup with a problem from last two days. I am creating a web application using VB.NET, Ajax & RAD Controls. When user clicks on a button I want to open a RAD Window and show the list of ledgers available to the user, so that he can select one from the list. And to open that window I have to call a java script function from client side, which is already achieved using the below code.
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Im trying to pass a array as a argument to a Javascript function from code behind(vb.net)
Code im trying
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I am trying to pass a control's id to a javascript function that adds the value of it (the control which is a textbox) to a listbox but apparently I am not getting it right.
<input type="button" ID="btnAddtoLstBox" value="" title="Add this to the list" onclick="javascript:addToList(document.getElementById(btnAddtoLstBox));"
class="ui-icon ui-icon-refresh ui-corner-all" style="width: 20px; height: 20px; background-position: -64px 80px" />
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I know this defeats the purpose of client side vs. server side (refer to title of this thread). What I would love to do is build my own custom progress indicator on the client showing how far a server side code has progressed. I figure if I could only get a JavaScript to fire and render a value of some control at pre-defined intervals while the server is working I could make it happen - but alas I'm beginning to believe that this is impossible. Below is some code that performs three 2 sec loops. At the end of each I want to change the visible value of a control on the browser. [Code]
View 8 RepliesI add an option to a select with jQuery. When I save with an asp button, I don't see the changes on the server side in the click event.
And the HTML is all correct after I add the option.
Is it a coding problem or I don't understand something?
$(selectCourant)
.append($("<option></option>")
.attr("value",$(dropdown).val())
.text($(dropdown + " option:selected").text()));
I am trying to run a query an Access db from VB. The general query which I want to run is
SELECT * FROM Patient WHERE Patient.PatientID = ?
or SELECT * FROM Patient WHERE Patient.PatientLname = ?
I tried using an input box which captured the user input and pass that variable to the query, but that failed.Then I read about writing a function and using that, however, I keep getting an error which says Function not defined, but when stepping through the code, it seems to work. Here is my function:
Module Module1
Public Function LookUpNow(ByVal userInput As String) As String
LookUpNow = userInput
Return userInput
[code]....
I have been reading through Atheists posts in regards to client-server and TCP client/server connection's. But how do i go about writing a program with 1 client and server where the client side creates a text file.Once the server sees there is a text file it connects and downloads it to itself or the client pushes the text file to the server.Once on the server i will read the text file and put its info into a sql db.
View 14 RepliesHow do I pass a variable difined in .aspx.vb to .aspx. I've tried this in the .aspx.vb:
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'postcode' is not declared. It may be inaccessible due to its protection level. What am I doing wrong?
I'm trying to, from a client-side piece, call off to a server-side piece. I need to do this synchronously. On my server-side code, though, I'm calling off to another piece of code, which I want to have a maximum of, say, 10 seconds to return a value. If I don't have a response within 10 seconds, I want to force my own server piece to set my result equal to 0, and return to the client.
Here's what I have on my server-side code so far:
Public Function GetWebResult(ByVal inputParameter As Object) As WebReturnObject Implements IWebInterface.GetWebResult
Dim result As New WebReturnObject
Dim webItem As WebItem = Nothing
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I realize this code is not functional. The problem is that I'm unsure how I would go about getting back into GetWebResult to set the appropriate return values before it is sent back to the client.
I am trying to run a query an Access db from VB. The general query which I want to run is
SELECT * FROM Patient WHERE Patient.PatientID = ?
or SELECT * FROM Patient WHERE Patient.PatientLname = ?
I tried using an input box which captured the user input and pass that variable to the query, but that failed. Then I read about writing a function and using that, however, I keep getting an error which says Function not defined, but when stepping through the code, it seems to work. Here is my function: [Code]
I have an array list on my server side that i want to use on my client side as an array how can i do this.
View 1 RepliesI'm using vb.net 2005. Here is my code:
<%@ Page Language="VB" MasterPageFile="~/SwapnaMaster.master" AutoEventWireup="false" CodeFile="SwapnaTestPage.aspx.vb" Inherits="SwapnaTestPage" title="Untitled Page" %>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server" >
<script language="javascript" type="text/javascript">
function myfunction()
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I guess in simpler terms what I am trying to do is get the post value of a disabled textbox to use in a SQL insert statement when the form is posted. I need to get the value of a text box that is disabled with javascript. Ultimately I will use the value as a parameter of a SQL insert statement. I have read that I need to get the value by doing something like this:
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I have a gridview button that I programmatically created and I want to load an update panel on the client side with the sent data. I have a hidden value field that gets its data on the click of the gridview button and the dropdownlist in my updatepanel depends on that value.
View 4 Replies
