AJAX :: Use The AutoCompeteExtender Or CascadingDropDown?
Jan 31, 2010
I have a request:((( Now I can use the TextBox auto-complete but my problem that i use (Key/Value) mean that I should display for example the country name and use the country iso code in the code behind.... so how can I do that by using ajax (TextBox or DropDownList)
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Similar Messages:
Feb 2, 2010
Can I Use CascadingDropDown without WebService?
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Nov 23, 2010
Is it possible to add a new item to cascadingdropdown? I tried ddl_master.Items.Insert(0, "3"), but it doesn't show up. When I view the source in the browser it's there.
<asp:DropDownList ID="ddl_master" runat="server" Width="200" CssClass="ui-state-default ui-corner-all">
</asp:DropDownList>
<ajaxToolkit:CascadingDropDown ID="cdd_master" runat="server" Category="Action"
[code]...
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Jun 17, 2010
I use the CascadingDropDown to fill several DropDownList in my web to manage different application access rights
I use the Ajax CascadingDropDown component for that.
My problem is that, depending on the application, the selections criterias of the values in my database will be different.
I would like to know if there is a way to get or to identify the name or the ID of the dropdownlist which execute the CascadingDropdown class in the .asmx part (in the "public CascadingDropDownNameValue[] GetApplication1(...)" class ) ??
The name of the DropDownList give me the code of the application manage use to select my data in my SQL query
I don't want to write several query for each dropdownlist like :
public CascadingDropDownNameValue[] GetApplication1(...), public CascadingDropDownNameValue[] GetApplication2(...) etc ...
as they will be create automatically at the loading of the page.
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Mar 19, 2010
i am using ajax cascading ddl for binding customer, package, device and leadcount.. i need to bind the package by customer, device by customer & package, leadcount by customer & package & device. but we can pass only one value to the webservice method when binding.. but i need to pass 2 or 3 values to the webmethod. how can we do this. also when i select the customer i need to bind all the 3 controls. but in ajax cascadeing ddl we can give 1 parent control id only. i need the solution for this also...
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Jul 1, 2010
I've implemented a cascadingdropdown solution using the demo video here on ASP.NET.
Below is my code for one of my sub-categories. I want to have my sub category controls hidden and only show them if there are sub-categories (not all categories have sub-categories)
So, my question is how to get the count of the subcategories returned by method below and turn on the visibility of the dropdown control from the web method?
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Jan 27, 2011
I'm using a CascadingDropDown in my page and I need to do the following things :
- Getting the list of elements in the dropdown
- Setting a specific value to the dropdown if it exists in the list
I am a total noob in webservices and javascript so I would like to do this in the codebehind but when I try to get the items of my dropdown, the only one returned is the one that is selected on the client side.
Is there a way to get the full list from the codebehind?
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Mar 2, 2011
I already used the search, but without success.
I want to use a CascadingDropdown inside an Accordion.
The ParentControlID for the CascadingDropdown is in pane1 and the CascadingDropdown in pane2, but it won't work.
When I put them both into one pane it works. But separated into two panes it doesn't work.
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Nov 9, 2010
I have two sets of cascading drop down lists they are contained in a detailsview <edititemtemplate>. The problem is that when the user clicks update; the original data is wiped out and the user has to redo the selection of all items contained in a cascading dropdown even if the user didn't want to change that particular aspect of a record. If the user doesn't select everything an error is thrown by the stored procedure in regrds to null values not being valid.
Is there a way i can use cascadingdropdown so that the current values are visible when the user clicks update; meaning that they don't have to redo selections for all items involving drop down lists. The current selections would be default values.
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May 19, 2010
I have big problem with the CascadingDropDown. I have 60 CDD with one "Child". So on the page are 60 Parents and 60 Childs. When i use FF3.5 everything works fine when he is the only Browser which is connected to IIS
When i use FF3.0 i get Methode ERROR 403 and 500
When i use IE6 i get Methode ERROR 12030 or 403 or 500
When i use Google Chrome no ERROR no content in the List!?
When i use IE8 sometime it works sometime not!?
This errors are not shown on every DropDownList (but on most of them!) I played with the "<jsonSerialization maxJsonLength="50000000" />" in the Web.config which seams to make it work a little bit better.
What can i do to get the CDD working?
I think it is a timing problem. The CDD are not filled in the order i placed them on the page. Local it works better then remote.
Can you help me?
This is my WebService:
[Code]...
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Jun 13, 2010
I have the method 500 error problem, I have tried to do a simple reproduction of the problem still the same, if I run the webservice [URL] it returns the values needed ok (5) in xml format, but the dropdown always return error 500 inside, here are the codes (Using VS2008, NF3.5, Windows 7), I have the whole day trying to solve this but I just can't:
[Code]....
[Code]....
[Code]....
[Code]....
'WEBCONFIG
[Code]....
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Aug 19, 2010
I am trying to populate 3 dropdown lists with using CascadingDropDown. DDLs shows make, model and color respectively. The last DDL is having AutoPostBack = true and I am trying to display the values from dropdown in one label control. I am pulling data from a webservice to populate DDLs. I am not getting any error while compiling but when I run the code it shows Error 500. I am not sure where I am going wrong. I am following the tutorial video of 'How Do I' -
[URL]
I am using C# and .Net framework 2.0. Web Service code looks like this
[Code]....
And Web Page Default.aspx looks like this -
[Code]....
I don't understand where i am getting wrong.
[WebService(Namespace = "[URL]/")]
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Dec 26, 2010
I downlaoded the sample code accompanying the "Cascading Drop Down Control to Access a Database" AJAX Toolkit video, and added the datasets from the sample code to my application running in VS2008 and AJAX 3.5. I think the sample code is in a prior version of AJAX.
When I ran my project I used to get Method Error 500 and after 2 days of searching the web could not get a solution. Finally by chance I recreated the datasets fresh in my app using the wizard as shown in the video and the error dissapeared and the cascading drop down worked beautifully.
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Nov 6, 2010
I am new to Ajax and i wanted to use the CascadingDropDown to get rid of the postbacks. But somethings wrong and when i debug i am not running any code from the Web Service for some strange reason.
this is my code in the .aspx file:
<asp:ScriptManager ID="ScriptManager1" runat="server">
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Feb 18, 2010
I am using CascadingDropDown the problem is that the parent of it is not dropdownlist its a textbox.
can i set ParentControlID to a textbox or any other control like a gridview selected row? if so, then how to do that? i tried setting ParentControlID to a textbox but did not work,
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Mar 16, 2010
I have asp.net content page with an update panel, asp.net controls with ajax extenders and it has asp.net button with event click. everything is working ok exept one case. I have 3 DropDownList with CascadingDropDown extenders. when I click the button without selecting anything from DropDownLists then click on the button the event click will work OK but if I select anything my page will respond when I click on the button.I already I added triggers for click button.is there anything I should check to fix this problem???
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Feb 4, 2011
how can i keep a cascadingdropdown value after a user do a postback ?
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Jul 21, 2010
I have a user input form with a cascading dropdown. The code is:
[Code]....
Once the user submits the form, it goes into a temporary table, pending admin approval. On the approval page, I display a GridView of all pending records. Is it possible to use a CascadingDropDown in the GridView, with each Dropdown set to the value stored in the database for that specific record?
If I can't do this with a gridview, how about a dynamic ASP table?
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Jan 18, 2011
I have taken 3 drop down controls and extends cascadingdropdown control to them. They work finely and show values properly. But, I want to store these valuse in sql database. I tried as we do for dropdownlist by using DropdownList1.selectedItem.ToString().
but it is showing error. It is accepting all other input values passed through text boxes, radio buttons and even combo box of ajax. So actually what should I write to take values from cascadingdropdownlist?
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May 5, 2010
I have a CascadingDropDown on an ASP.NET page. Now, the prompt text is "Select State". (list of states). However, on a different version of this page (ie querystring), i might want to set the selected index to "California" for example. How can i do this? The web service used by the ajax control (ie GetStates) gets invoked at the same time the jquery document.ready function is triggered (ie asynchronously).
So when i try and set the selected index in jquery, the items are not yet bound. Is there a way to attach a handler to the ajax dropdown so that i can set the selected index once the webservice call has completed, and the items are bound?
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Nov 19, 2010
I am using the AJAX Contol Toolkit and 4 CascadingDropDown extenders with an ODBC connection in a Web Service. The original load of values in each level works great. I then use these values to set the create the SQL for the SelectCommand for a Gridview.
The problem I am having is that when I submit the page to perform the search, the first 2 dropdowns repopulate and set the selected index accordingly, but the 3rd dropdown does not retain its selected value. It does populate with the values, but the selected value does not get set.
The correct values are available for the SelectCommand which returns the correct values.
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Jan 31, 2011
I followed the CascadingDropdownlist tutorial: [URL] The 3 CascadingDropdown im using are working fine. But when i click on the SEARCH button it return the following error:
Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. at System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument) at system.Web.UI.Control.ValidateEvent(String uniqueID, String eventArgument)
at System.Web.UI.WebControls.DropDownList.LoadPostData(String postDataKey, NameValueCollection postCollection)
at System.Web.UI.WebControls.DropDownList.System.Web.UI.IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection)
at System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
Then i found this: [URL ]And now i canīt register the ASSEMBLY on the top of the MASTER PAGE.
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Jul 8, 2010
I currently facing a cascading drop down list problem. When I develop my website at local pc, everything work just fine. However I deploy it to server, I get Method Error 500.
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Oct 20, 2010
I followed a tutorial yesterday to implement CascadingDropDown lists but I can't find many examples of how to retrieve their selected value.
Can this only be done using javascript?
Is there any way to access the SelectedValue of the CascadingDropDown lists in the codebehind?
I'm using them in an EditItemTemplate, in a DetailsView, on a master/details page.
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Jul 30, 2010
I have a cascadingdropdown which works fine using a webservice and is populated. I can save the value of this dropdown to the database buy clicking a save button. However when the page reloads, the list is populated again. Is there a way to keep/set the selectedvalue after postback?
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