AJAX :: Default Image SlideShowExtender(if No Imagealbum Is Created)?
Dec 13, 2010
I am having trouble with my .asmx. I keep getting the error:
Sys.Net.WebServiceFailedException: The server method 'GetPhotos' failed with the following error: System.Data.SqlClient.SqlException-- The parameterized query '(@ImageAlbumGUID nvarchar(100))SELECT * FROM [Image] WHERE [Image' expects the parameter '@ImageAlbumGUID',
which was not supplied
I have my .asmx set up to display images if there is an album created from the db. If there is not an album created I would like to use a default picture. I tried setting the Image Url of the asp:Image to the image I want, but regardless I get this error.
I keep on drawing this error:Sys.Net.WebServiceFailedException: The server method 'GetPhotos' failed with the following error: System.Data.SqlClient.SqlException-- The parameterized query '(@ImageAlbumGUID nvarchar(100))SELECT * FROM [Image] WHERE [Image' expects the parameter '@ImageAlbumGUID',which was not suppliedI understand how it is drawing it, When I skip creating an album It does not create an ID, so instead I would like to show a default image not from the db. I have been trying to figure out if @ImageAlbumGUID is nothing then the show image.
I am using SlideShowExtender and I am using a Slideservice webservice located also in root folder. It works fine. My image folder is in ROOT FOLDER. But I have member webpage folders and a general web pages folder. Now, when I click on webpages of any of these folders, the slideshowextender stops working because it looks for my IMAGE folder in those Webpage Folders. I know this happens because I can see it trying to download the image from that URL which DOESNT EXIST(looking for my image folder in webpage folders).
How do I make a relative URL for the images so that the slideshowextender still POINTS to the ROOT FOLDER of images and displays images at all times.
I cannot make the slideshowextender work when I am logged into the system.
I am having problem Using AJAX SlideShowExtender Control to retrieve image from Databases with querystring which passes query to an ImageHandler.
all my images to display are stored in database and I can retrieve them from Database using Gridview and so on. but using AJAX SlideShowExtender Control to retrieve image from Databases is a problem.
for example this code in code behind;
[Code]....
The Bold part of the above code is the problem...
[Code]....
Actually this should pass the query to the ImageHandler.ashx class created in a folder Handlers in my Project.
the other two ...
[Code]....
slides shows perfectly because the Images are stored in the Filepath.
but I don't want to be storing my Images in a folder in my website but in database.
how to use AJAX SlideShowExtender Control to retrieve image from Databases?
whereby a querystring is passed to the Imagehandler that retrives image from database and resize them?
' To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. <System.Web.Script.Services.ScriptService()> _ <WebService(Namespace:="http://tempuri.org/")> _ <WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _ Public Class SlidesService Inherits System.Web.Services.WebService <WebMethod()> _ Public Function GetSlides() As AjaxControlToolkit.Slide() Dim MySlides(2) As AjaxControlToolkit.Slide MySlides(0) = New AjaxControlToolkit.Slide("ClassifiedImages/Image1.jpg", "Blue Hills", "Go Blue") MySlides(1) = New AjaxControlToolkit.Slide("ClassifiedImages/Image2.jpg", "Sunset", "Setting sun") MySlides(2) = New AjaxControlToolkit.Slide("ClassifiedImages/NoImage.jpg", "Winter", "Wintery...") Return MySlides End Function End Class
I am using SlideHowExtender in MVC application. It is not working. I have put the same code in simple .aspx page it is working properly in same application.
Page : Views/Shared/Site.master Image are in : Content/SlideShowHome <script runat="Server" type="text/C#">
Are there any step by step tutorials on how to use the SlideSHowExtender to create a slideshow?
I have had a look before posting but couldn't find any step by step info.
Each time I try to drag the SlideShowExtender to a web form I get a round black circle with a black line through the middle, in other words it won't let me use it and I must be trying to use this control incorrectly.
This was programmer error - a problem with my SQL. I am populating a slideshow extender control successfully from a list of images maintain din a MySQL database. I have created a "back" button that executes the following javascript: [Code]....
This correctly goes back to my web service method that fetches rows from my database. I issue an "order by" in the SQL to sort the rows returned in descending tiome order and have verified that they populate the slide array in that order. However, when the page renders, the slideshow appears to play them in almost a random order. Is there any trick to getting images in a slideshow array to play in a particular order?
Recently I had to create a slideshow using the AJAX SlideShowExtender. One of the requirements was to have the images show up in a random order so visitors won't see the same slides over and over again. To do this I added some code to the GetSlides() function to reorder the slide array randomly. Here's the code:
[System.Web.Services.WebMethod] [System.Web.Script.Services.ScriptMethod] public static AjaxControlToolkit.Slide[] GetSlides() { AjaxControlToolkit.Slide[] mySlide = new AjaxControlToolkit.Slide[]
I have been struggled for a day without success. Also I am not sure is this possible, since I am not too familiar with Javascript. let me know is there a way to fix my problem. Here is my problem:
What I have is a datalist and at each row it contain an UpdatePanel and inside the UpdatePanel there are a button, a slideShowExtender with related controls and a hiddenField. The hiddenField stored a second contextKey value. At page load time the default contextkey already assigned to the slideShowExtender. What I want to achieve is when user clicked the button the slideShowExtender will switch the Contextkey with the hiddenField value so that the SlideShowExtender will display a new set of images.
So far I can make everything work as I want with server side function, which executed when the button onclick. However this will generate a whole page post back, which I want to avoid. So I was thinking of using client side Javascript to do the contextkey assign and then update the updatePanel, but I am not too familiar with Javascript so I can't get it working :(
I'll start off by stating that I've read numerous posts with the same or similar errors but haven't found anything to solve my issue. I'm getting a lengthy error message:
Sys.Net.WebServiceFailedException. The server method'GetSlides' failed witht he following error: <html> <head> <title>Unknown web method GetSlides<br> ....
I put a SliderShowExtender and i created a web service with a function that return AjaxControlToolkit.Slide(), but when a run the project give me the error:
Microsoft JScript runtime error: Sys.Net.WebServiceFailedException: The server method 'returnLogo' failed with the following error: <html> <head> <title>Unknown web method 'returnLogo'.<br>Parameter name: methodName</title> <style>
I am trying to put a default image in an Image control in asp.net and it should show that particular image on the page when no other image is assigned or no image available in Database.
How do i set the default profile when a user logs in. I have an application where the users (once they are authenticated) are in either the logged in, premium, or promotion profile. right now it assigns none. How do i make every user automatically be part of the promotion profile.
i have a website which has a <IMG> and/or <asp:Image> in it.
The user has an option to upload an image. so if the user does upload an image it will be displayed in the stated controls above. but if they don't the control displays its alternative text or an "x" icon. can i just place a default image in it if there is no image reference to it to display?
i have an image and an imagebutton, they are inside a listview and get their imageurl from databinding, i would like to know, if maybe the databinding value is empty, instead of showing a big red x, is there anyway to maybe make it link to a default image when the value is empty instead?
