MVC :: Javascript Doesn't Work On DropDownList Change?
Jun 9, 2010
I searched all day a solution to my problem.I worked with MVC 2 with visual studio 2010.I want to bind dropdownlists according to the value selected in an other dropdownlidt (but the datas are not linked in the database).In fact, I have a function in a controller and I tried to call it thanks javascript. But during the debug, it never goes in this function.If I'm not clear, ask me some question.
I have a callback handler done in VB which works fine with this code:
<!-- Div Outside Form --> <div class="container"> <form id="querydata" runat="server"> <asp:DropDownList runat="server" ID="myddl" AutoPostBack="true" OnSelectedIndexChanged="myddlhandler">
[Code]....
It the postback no longer works. Is how asp is supposed to work? Or is it some magic error that only works for me? And most importantly, if asp is not supposed to work this way, how should I be doing this?
I have a dynamic dropdown that is populated from sql. The user is supposed to select an option from the dropdown, then click a search button on the form to return some results based on that selection. It works fine if the dropdown gets populated with more than one record. However, if only one record is returned, that one record can't be selected. Whether you select it or just leave it alone since it's the only one, when you click the form button (search button), no results are returned b/c the dropdown selection must not be actually selected.
I've included the relevant code below. First the DDL, then the datasource, and finally the C# code in the if (!Page.IsPostBack)
The thing is that, the first if statement works fine and the 'javascript' shows an alert and close the window, but in the second if statement the javascript shows the message but doesn't close the window.
I have a new web application. I've setup the application and it's working on one server(xxx) but it's not working on another(yyy). I changed the web.config file(checked throughly and I've changed the connection string and appsettings).
What could be the error?
The login page is working but when I proceed a Javascript error occurs...
(Line: 48 Error: Object doesn't support this property or method)
I have an UpdatePanel on the page which I'd like to trigger using javascript.First of all my code perfectly works if it's in a website not being inheriting from a masterpage. Now when you put exactly the same code into a website which inherits from a masterpage, the UpdatePanel wouldn't get fired anymore.
After upgrading our project to the .net 4.0 framework (from 3.5), we facing some problems with ajax calls with html in the parameters. As soon as the user enters some html in a text area the ajax call isn't executed anymore. If the user enters plain text only, there is no problem.
I have a jQuery function in a .js file, and the function requires a querystring parameter to be passed. If I try to use the CompositeScript feature in the ScriptManager, it pukes on the file that has the querystring.
I have an asyncfileupload control within a panel control. The panel is initially set to visible=false on page load. After a user clicks a button to display the panel contents however, I set the panel to visible and the user can then use the asyncfileupload. The problem however, is it seems much of the javascript associated with the asyncfileupload, does not function properly when the panel containing the upload control is set from invisible to visible. If I set my panel's "visible" property to "true" initially, then it works fine. My javascript error message is as follows:
"Form contains a file input, but is missing method=POST and enctype=multipart/form-data on the form. The file will not be sent."
Basically within my asyncfileupload control, I have the following line:
[Code]....
In this scenario, my "args" variable is always null (when I set my pane's "visible" property to "true" on page load, the args variable DOES contain data. Any idea why switching a panel from visible=false to visible=true, would cause an error like this?
I have put the following method in my master page. It works when I call it on a full post back, but when I call it from a updatePanel's asyncPostBack no alert is shown.
I have dropdownlists in Gridview. I need to dinamicly change content of dropdown on client with javascript. Ok, I know to do that. But the problem is when I send data to server changes in dropdownlist does not see. On server I have old items. How can I change items in dropdown on client with javascript and than see that items on sever when postback data?
When I change the value in dropdownList (in browser), it does PostBack, but it selects the first item of list after PostBack - it doesn't save my value.
GetAllDepartments(isDeleted) is a stored procedure, it returns a List of objects with two properties - FieldKey and Name.
I am a new to WCF. I have written ajax to use a web service before, but on this project I am trying to use ajax to WCF.After I build the project and wcf using ajax, I receive the return successfully. But, 10 or more minutes later I don't get a return, the ajax calls the error function, and the fiddler returns nothing.
If I rebuild the project without any source modifying, I receive the return successfully again.