AJAX :: Update FilteredTextBoxExtender From AsyncPostbackTrigger?
May 28, 2010
I have an ASP.NET Label on my form, which is wrapped in an UpdatePanel. The UpdatePanel has two AsyncPostbackTriggers which reference two DropDownList controls. Based on the combination of selected items in both DropDownLists, I'm updating the Label. I also have a FilteredTextBoxExtender referencing an ASP.NET TextBox that's, by default, only allowing numbers. Now, along with updating the Label based on the combination of selected items from both DropDownLists, I'm also changing the FilteredTextBoxExtender's FilterType to Custom | Numbers and ValidChar to a hyphen, to allow both numbers and a hyphen (for phone numbers). Remember that I have both DropDownLists as AsyncPostbackTriggers for the UpdatePanel. This works perfectly fine doing a regular postback, but if I add those two DropDownLists as AsyncPostbackTriggers, the FilteredTextBoxExtender is not working properly based on the FilterType and ValidChar properties. It only allows just Numbers, which is the default. Is there anyway around this without having to do a regular full postback?
have update panel that content check box, textbox, 3 DropDownList with CascadingDropDown extender. When I checked the checked box it should do a AsyncPostBackTrigger and it is working ok but the problem that if I select any thing from DropDownLists then check the box it would clear the DropDownLists after doing AsyncPostBackTrigger for the the check box.
any advice how to separate these controls inside update panel for doing AsyncPostBackTrigger??
I looks like if you use the filteredtextboxextender control with number as the type some Mac browers don't let you paste text into the text box with the cmd+V. I have verified this with the filteredtextboxextender demo page.
i am using the filtered text box extender.I want to allow commas like "," but not possible with the code below.how do i change this to make commas acceptable?
I'm trying to create a filtered textboxExtender at run time , but it doesn't work.What can be wrong with the code ? Or is there any example usage of FilteredeTextBox at run time?
I have a problem with adding programatically FilteredTextBoxExtender (i put the code below).
The problem is that nothing is outputed when page is renedered although TextBox and FilteredTextBoxExtender are added to container (table cell controls property in my case).
We're currently using FTEs to filter input on our registration. New business model wants to explore foreign markets, and I have not been able to figure out how to get the FTEs to accept foreign language characters.
I have a list of news summary in a repeater control and I want to show the detailed news in a Modal Popup without post back. review the steps I am doing to achive this functionality:
I have list of News Summary on my page in a repeater control, bind with SQL database.
my page is using an UpdatePanel to do some ajax function after a button click. So here is what I got.
I have a textbox and a button.. The button clicks and the animation fires... But i dont want that, I want to validate the textbox and if everything is ok then fires Animation. Here is the code. My question is how can I fire this animation after all validations are ok?
I'm dynamically creating image buttons and want their click event to update an image in the update panel where only the panel updates- not the whole page.
I have created the image buttons click event and got it so that it updates the image in the update panel, but I can't seem to create the triggers- I keep getting the error 'Multiple Controls with the same ID' and I can't understand why.
I am converting an old payment page from classic ASP to ASP.NET. The page includes three radio button options (credit card, purchase order, bill me). The old page uses javascript to enable/disable the appropriate input fields depending on which payment option is selected. For example, if the payment selection is changed from "credit card" to "purchase order", the credit card fields are disabled, and the PO number field is enabled.
I want to mimick this behavior using ASP.NET + server-side AJAX, so I created RadioButtonList for the payment options, and put all the data input controls (credit card number, purchase order number, etc.) within an UpdatePanel. The UpdatePanel has an AsyncPostBackTrigger with ControlID set to the RadioButtonList, and an EventName specified which tries to enable/disable the appropriate input fields depending on which payment option is selected. This doesn't seem to work because changing the radio button selection doesn't seem to fire this trigger.
Is it possble to utilize AsyncPostBackTrigger with a RadioButtonList control? If not can you suggest a way to handle this scenario for dynamically enabling/disabling form inputs?
I want to try and use an updatepanel. So I have surrounded this code with an updatepanel.
Now I need to put "LinkButton57" as AsyncPostBackTrigger. It seems that I cant put that in the HTML code in the Trigger tags as the updatepanel only searches for parenting controls.
This LinkButton57 is located deeper in the control hiearchy as you can see here. So I am trying to put this programatically in the Page_Load event.
Now if I run the below code, I get this exception(Object reference not set to an instance of an object) and wonder if I could be thinking right here and just miss some details perheps? Will be happy for answer.
How can I validate a Boundfield in gridview that changes to textbox dynamically?the boundfield is
<asp:BoundField DataField="quantity" HeaderText="quantity" /> and it chenges to textbox in code belowI want only number (1,2,3,...) in it not text. protected void CartGrid_RowUpdating(object sender, GridViewUpdateEventArgs e) {
I have a very simple application that works almost all the time. I am using an UpdatePanel. My script manager is configured to enable partial rendering. My UpdatePanel is configured for conditional update mode. My asynchronous trigger is a timer that runs every 3 seconds. I track unhandled exceptions in the database. I am not getting any unhandled exceptions. Nor am I getting managed exceptions. Now, I had two users side by side running the application today. I had one record in the data queue. The first user did not get updates; her grid did not update. The second user did get updates. The only difference was that the first user was logged in for a long period of time. The second user logged in just before the test. I reviewed the IIS log file and both users were polling the page every 3 seconds for the same data. So why didn't the first user's grid update? The code follows.
In updatepanel we can use triggers with two methods AsyncPostBackTrigger and PostBackTrigger so I want to know what is different between these two as well how can we decide we need to go for which one.
I have a TabContainer with a few TabPanels. Inside the first TabPanel there is a GridView that have a LinkButton called "Subject".
Now when this "Subject" is clicked I want to change the TabIndex to another TabPanel so I have created a clickevent for this below.
I want to change TabIndex using an UpdatePanel to not have to do a fullpage postback.
So I need to put the "Subject" in the AsyncPostBackTrigger but it says it cant find the control so I wonder how I would do this for this LinkButton "Subject" ?
I need to filter user input into a textbox - as the user inputs the text (as opposed to examining the textbox on the textchanged event) The FilteredTextboxExtender does the trick, but there is a catch. I want to add formatting (currency) AFTER all of the input is collected in the textbox. The "FilteredTextboxExtender " prevents this from happening. This extender does have a property "Filtermode" which can be set to either "ValidChars" or "InvalidChars" at design time, but I do not know if it can be set at runtime.
Any solutions would be most appreciated. I am also open to other solutions to the problem - which is : do not allow chars other than numeric into the textbox, until the textbox has lost focus, at which time, currency formatting is to be applied.
Element 'AsyncPostBackTrigger' is not a known element. This can occur if there is a compilation error in the Web site, or the web.config file is missing.
My app is working properly but visual studio showing warning like that.
