AJAX :: DropDown Control Filled By Server Then Opened In Client?
Aug 12, 2010
I tried to use a DropDown-Control (WebDropdown from Infragistics) for the following function: Let the user enter any text or if he wishes choosing by a context menu two different "Already exist entries" in the DropDown-List from where he can choose a value. The behaviour should be this for the DropDown: Right-clicking on the DropDown-Control, filling the DropDownList in the server depending on the choosen context menu item, opening the DropDownList in the client.
The way I tried to solve:
Open (by javascript) a context menu by right clicking on the control
[Code]....
What's the problem? The problem is, that the above javascript function does find the WebDropDown1 control only if it is called client side (e.g. with a OnClientClick button event), calling it from server side (as in the ContextMenu_ItemClick subroutine) it does not find the WebDropDown1 control. The error is shown (translated into english): run time error: object expected.
Maybe a completly different solution is necessary as I transfer a windows forms program into a web form ajax style program. I could use a textbox with dropdownextender for example. But the problem seems to be always the same: uncoupling the dropdown function, which is a client side one, by first filling the dropdownlist on server side, and then invoking the dropdown event makes the problem.
I am using asp:ScriptManager and asp:UpdatePanel to populate a DropDown , and for every field need to display hits in div.In order to Implement the hint I am using JS, it works fine unless I started to populate a dropdown based on another one.
here is some code lines from page and JS
<asp:ScriptManager ID="sm" runat="server" EnablePageMethods="true"></asp:ScriptManager> <asp:UpdatePanel runat="server" ID="up0"> <ContentTemplate> <dd><asp:DropDownList runat="server" ID="CCategory" CssClass="lst" ValidationGroup="Property" AutoPostBack="true" onselectedindexchanged="CCategory_SelectedIndexChanged" /><span class="hint">Please choose a city where you want to or having a property.<span class="hint-pointer"> </span></span></dd>........
I am using asp.net 3.5. I filled dropdown list in javascript using ajax service but unable to get its selected value in button click event on server side.
I am writing an Ajax Server Control in ASP.NET C# 4.0 in VS 2010.
After writing the javascript prototype class by hand, I don't know of a way to compile and debug file. To see why my "onclick" event doesn't work.
I'm creating an Ajax Server control by inheriting from Control & IScriptControl, and trying to get an onclick event handler to work. The written control is actually a "DIV". Can someone tell me why it doesn't work?
public class FrebbleSquare : Control, IScriptControl { IEnumerable<ScriptReference> IScriptControl.GetScriptReferences() {
I have a user control which has some properties configured on it. I need to access (actually, only read) the values of those properties on the client. I have done it like this.
Code behind:
[Code]....
ASPX:
[Code]....
That works but, at the back of my mind, I'm sure I've seen a neater way of doing it, although I suspect that may have been on an Extender not a User Control. Pointers on that welcome.
Also, related to that, the User Control itself has an Id which becomes part of the name of all visual objects included within it. However, the User Control is not a DOM element in its own right (because it has no visible rendering) which [I think] means that I have to attach properties to one of the visible elements within it, and not to the control itself?
how to get the names of excel files opened on the Client machine and populate it in a ListBox? If somebody did it please reply to this or give some pointers / web site links to me, so that i will read and try to use for building my code.
The dilaogbox that offers me to save the file shows incorrect chars if documentFileName has name not in ASCII format. What I'm supposed to do to have the file name displayed correctly in this dialogbox and to have this file opened under the same name in MS Word, Excel whatever else?
for the past 6 hours i have been going trough a million forum posts , I've been reading blogs , tutorials documentation and more.
Unfortunately, the amount of deprecated information is absolutely overwhelming.
All i'm trying to achieve is to change the value of a parent dropdown to something else, programmatically, and then have the child dropdowns to refresh.
By now I'm quite certain i have to use the function _onParentChange in some way. Whit this function i can actually get the first parent to refresh, how ever the functions seems to be doing absolutely nothing when i call it on the child
I've been seeing a lot about using a context key and several ways to use it, but I'm not using a context key, do i have to use one?
i'm using the latest version of the toolkit whit visual studios 2008
i'm using only two dropdowns whit two extenders
here is the code:
where i can find proper client side documentation per toolkit control ?
I have a async file upload control and I am doing client side validation for Image."OnClientuploadstarted" I am doing the client side validation.My validation is working fine but my problem is that the file upload control text box goes green (i.e file is loaded on the server) even if the validation fails which is I dont want.What I want is when the client side validation fails the file does not gets loaded on the server and the Async file upload textbox does not goes green.I have goggled but have not found a suitable solution.
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I have a user control which contains a CustomValidator which is used according to whether a RadioButton is checked or not (there are several RadioButtons, I'm only showing the relevant one)
There is some client + server side validation code (the server side code does exactly the same thing and is skipped for brevity)
<script type="text/javascript"> function ValidateDateFields_Client(source, args) [code]...
There are two instances of this control in the page. When running the client side version it hits the wrong one (the version of the control which is disabled). You can see from the generated HTML both are correctly specified. I'm not sure how .NET works out which clientside function to call given they both have the same name.
[code]... Do i need to add something in to scope it? What's the best way to achieve this? If I disable the loading of the second control everything works fine.
I am using AJAX ComboBox control (or I can use simple ASP.NET DropDown Control it does not matter) in my form. What I do is, I bind combo box control to my database and retrieve client names:
[Code]....
But here is the problem. I want First and Last names to go into separate TextBox controls (txtFirstName and txtLastName). Now it inserts Last Name and Firts Name in txtLastName control. At the same time I would really like to keep LastName + FirstName together in Combo Box.
I am new to Ajax Control Toolkit, with the help of online tutorials I had created a cascading dropdown list in asp.net and tested it on my local machine. For this dropdown list data source would be an xml file (which is saved on my local machine c drive). I haven't encountered any issues until I deploy the precompiled web site on to IIS 7. When I open the web site from IIS I would see the two dropdown boxes on the web page with an error "Method error 500". I believe this error occured due to incorrect xml file path provided on IIS. I had copied xml and xsd files into IIS server C drive but it did not help out and then I created a network map and placed the xml and xsd files in that shared folder tried to access that path from web service, it's working on local machine but not on IIS. It would be great, if any one could explain me the solution.
We have an UpdatePanel that is showing a gridview with loads of data in it. We have loads of well written sprocs that don't take very long, BUT we have a few horrible ones that take ages.
We do intend to rewrite them but in the interim we have put the ADO.NET commandtimeout up to 180s. The scriptManager.AsyncPostBackTimeout is set to 240s. We want to handle this on the serverside. One of the reports still fails (it's got a couple of nested cursors in it - someone who hasn't had SQL lesson 101 from me!).
Half the time, the nice error timeout message is shown using server side handling of the command timeout. The problem is that the other half of the time the commandtimeout doesn't seem to fire.
I'm having major performance issues with my BBCode/Commenting system. It's taking 3 seconds to process the code, with 5 comments and a simple [b] command.
So here's what I am doing (it's done like this because of the way my backend system is designed):
"LoadComments" function is called with referenced to the repeater. "PagingSystem" is initializedBind data to controlData is pulled from the binded control (if bbcode is enabled) Data is put into a dataview Process text and convert BBcode (update row) BindData I disabled every feature, including the BBCode, and it's still loading slow. This is the ONLY thing I can think of causing the issue. Here is the base code that process bb:
[Code]....
As you can see, it uses my own data management code. Even without using it, I'm still not 100% sure how to modify the contents inside of a repeater. I don't see how modifying them could slow it down so bad..
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What i want now is to show only the filtered values on the popup window based on the selections made on the parent pages' parameters.
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