In my asp.net project, I have a view－image page and an upload－image page. I upload an new image and direct to the view page, the image doesn't be changed, because IE won't reload the image if the image's url remains the same. prefer the way to ask the browser to reload the image independently without server setting or web-headers changes.
View 2 RepliesIn my asp.net project, I have a view－image page and an upload－image page. I upload an new image and direct to the view page, the image doesn't be changed, because IE won't reload the image if the image's url remains the same.
prefer the way to ask the browser to reload the image independently without server setting or web-headers changes.
<asp:Image ID="aspImagePreview" runat="server" AlternateText="Preview" Height="190px" Width="290px" ImageUrl="~/file1.jpg" />
when the file file1 has been changed or removed. How can I do one refresh to the item to make it reflect the recent change?
I have a requirement where image has to be uploaded to a folder and show it in image control. When uploading the image i have resized the image through code and saved it in a folder. The code is as follow
[Code]....
I've got a working update panel which works fine when updating a label control, but I can't get it to work with an updated image (initial image loads fine - the problem is with the update). I think the problem maybe that the image name and location don't change, only the physical file. In other words, I've loaded the page, then updated the image (same name and location), but the image does not update with the label? Here's my code:
[Code]....
And the code behind:
[Code]....
I've taken over work for the custom forums that a previous developer created at my job, and came across a minor bug. We don't allow animated GIFs as avatars in the forums. However, if someone were to take an animated GIF, rename it to imagename.jpeg, and then upload it, the forums will show the image as being animated.
It's a very odd bug as I didn't even think it played the animation if the extension wasn't .gif.
So my question is: Is there a way to check (in .NET 2.0) if an image is an animated gif, even if the extension isn't?
i use this code to display my image from database
[URL]
i test it in one page it work correctly but when i want use it in product.aspx page it didn't show image i think in my page there is some code that prevent to showing image from database but i can't find it
<tr>
<td align = "center"><asp:image ToolTip = "ASP Image Control" ID="Image13" runat="server" ImageUrl ="imageH.aspx?ImageID=48" Height="156px" Width="174px"></asp:image></td>
Here the form code -
<div class="textmid2">Adviser Photo :</div><div class="textright">Adviser Sign :</div></div>
<div class="Row"><div class="view_img1">
<asp:ImageMap ID="imgADphoto" runat="server" Width="140px" Height="150px">
</asp:ImageMap> </div>
<div class="view_sign1">
<asp:ImageMap ID="imgADsign" runat="server" Width="200px" Height="70px">
</asp:ImageMap> </div>
Code Behind for form code -
//code behind//
protected void txtCID_OnTextChanged(object sender, EventArgs e) {
SqlConnection cnn = new SqlConnection();
cnn.ConnectionString = System.Configuration.ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
cnn.Open();
[Code] .....
I have a masterpage that is used as master page for all the pages in my application. I have no issues with the forms and pages. However, currently when any page is loaded master page gets reloaded. I think it is not efficient if master page is reloaded everytime the application paged are loaded. The desired behaviour is to have the master page loaded once and reload it again when a user logs in as the login/password elements are within the master page in the header section. Other than these situations I see no need for master page to get reloaded. Optimally when a user clicks on a link on the navigation bar (which is in the master page) I would like the header section in the master page to remain in the page and just the content section gets reloaded.
View 10 RepliesNote: The answer marked as the answer, answers the questions in the Title. However, my underlying problem, using type ahead dropdowns, is solved by moving to IE8.
I have a drop down list that when I CLICK a NEW selection I want to cause a postback ("this.form.submit()") But only if the click on the dropdown list just changed the selection.
Note that OnChange will NOT work because when the selection is changed by the keyboard I would not want to postback because it is a type ahead dropdown list.
I also suppose I could use OnChange and check if the change was caused by the mouse.
Maybe if we can come up with both solutions and i'll see which works better?
EDIT: More information:
AutoPostback = true; will not work. (don't want it to post back when the selection is changed by the keyboard)
onBlur = doPostBack; I tried this, but the result is not optimal. The user has to click off the ddl after making a selection with the mouse.
Another way to state what I want to do, i think, is do a postback when both the OnChange and OnClick events fire at the same time.
I am knew to CSS I never usually do it. I am creating a menu and I change the image of the button when the button is hovered over it. But when I go on the submenu the image reverts back to the original image. The code I have used is below.
[code]....
Ive set up a basic client side callback to a WCF service. see sample code below.
when viewing using an http filter attached to the explorer you can see that:
1. service1.svc/js is working fine and return proper java script to the browser
2. serrvice1.svc works and returns a proper json data.
3. call is fine and using alert instead of updating the div info i get the data.
but then after OK on the alert the page is then reloaded from scratch.
[Code].....
I had found one line code in vb which did this, using the System.Web.UI.Page, but I can't find it back. Someone could tell me what it was ?
View 3 RepliesI have an asp.net page that sets a few session variables. On my development machine (localhost), I do a postback and the session values are still populated.
When I Reload the page by clicking on the url bar and pressing enter the session variables are still there.
However when i deploy this page to a webserver, the page still retains the session values when doing a postback, but as soon as i click the url and press enter the session values are lost (where the ispostback = false)
But when i press the refresh button the session variables are present (but i do get a popup warning me that the page data needs to be resent!)
i am running IE 7, and the webserver is iis6 what am i doing wrong?!
I have a [WebMethod] within an aspx.cs file. It seems that whenever a second call to the method is made via AJAX before the first call is fully executed, the web method completely stops functioning until the page is reloaded.
View 2 RepliesI have a gridview control that extends the default gridview. I have added an attribute called "hiddenSelectedValues" to to the gridview during the "PreRender" event and I have a private variable that points to the value of that attribute.
I have some javascript code that modifies the value of this attribute based on the user checking or unchecking checkboxes in the grid. I have confirmed that the javascript is indeed modifying the value of the "hiddenSelectedValues" attribute by using Firebug to see the change as it happens.
However, once a postback occurs, the grid looses the updated value of this attribute and I am unable to reference get the updated value on the server side.
How do I keep the value of an attribute changed by javascript on postback?
I have used below code.
<asp:RadioButton GroupName="grpAssoc" ID="rbtEvery" runat="server" Text="Everyone"
onclick="return doChangeAssociationType(0);" AutoPostBack="True" oncheckedchanged="rbtEvery_CheckedChanged"
/>
but oncheckedchanged="rbtEvery_CheckedChanged" not firing even javascript function returns true
How to fire the event?
After some code change I have published my AJAXised web application to the server and the application failes to work properly - something weird is going on, as all .aspx pages are displayed as an ASPX markup text (page declaration, html controls, etc.), rather than a page is being rendered as an html. I have not changed the webconfig, only changed my pages' content/code behind.
View 4 RepliesFor our ASP.NET project for school we had to build a sport event management web application.
We provide the application in three languages (English, Dutch & French) which you can switch all the time. This has worked all the time for all users, well that's what we think anyway.
Yesterday I found out that switching from one to another language isn't working for 2 of our users. So I started testing a bit and I always got this error.
I'll try to explain what happens behind the doors when changing the language:
First of all the current language is saved in a session so we don't have to check the user row every time a page loads. Besides that we save the language in the users row in the database.
Users Table:
Id int
Unchecked
Email varchar(150)
Unchecked
I sort a listbox items, using code below:
<script type="text/javascript">
function MoveDown() {
var selectedOption = $('#ListBox1 > option[selected]');
var nextOption = $('#ListBox1 > option[selected]').next("option");
if ($(nextOption).text() != "") {
$(selectedOption).remove();
$(nextOption).after($(selectedOption));
}
}
function MoveUp() {
var selectedOption = $('#ListBox1 > option[selected]');
var prevOption = $('#ListBox1 > option[selected]').prev("option");
if ($(prevOption).text() != "") {
$(selectedOption).remove();
$(prevOption).before($(selectedOption));
}
}
</script>
But when I submit a button and get listbox item in c#, I just get the order which not changed. How to get the changed data?
Not wanting to reinvent the wheel, I found an image rotator on Code Project. Since it was based on tons of javacript, I thought it would be okay, since it was made into a web control, so all you had to do was reference the dll, set a few properties and it worked (VS 4.0, ASP.NET 4.0) in the IDE.
It doesn't work on my host site unfortunately. Does anyone know of a picture, or image rotator that is public domain that is based on ASP.NET/C#.
I am converting a html pages into aspx. There are images flashing along the top of the webpage using javascript control. But it does not work after i put into the master page.
In the VB Developer Express, there are also green underline for class name (i.e. class="back")
<div id="images">
<div class="image">
<img id="image_1_front" class="front" src="img/empty.gif" />
<img id="image_1_back" class="back" src="img/empty.gif" />
</div>
<div class="image">
<img id="image_2_front" class="front" src="img/empty.gif" />
<img id="image_2_back" class="back" src="img/empty.gif" />
</d
<div id="image_list">
<img src="img/title/1.jpg" />
<img src="img/title/3.jpg" />
<img src="img/title/6.jpg" />
<img src="img/title/7.jpg" />
</div>
</div>
I would like to brighten an image on my webpage on mouseover using css or javascript. Ive seen some examples using opacity and filters in styles but they dont seem to work for me.
View 3 RepliesI have an image like: img src="" class='listPartialLoader' alt='loading' I am assigning the 'src' value with data from an ajax call. Some times if the image is not found I want to add a default image path like"Images/default.jpg". But how can I check whether the image is exist or not using javascript? (Basically I want if the image is not found add a default image)
View 3 RepliesOn the home page of my site I want to display a lot of products which have images which are quite large. Currently the page is taking so long to load that it is actually timing out and the page fails to display!
In MVC, or just ASP.NET in general, how can I load an image asynchronously? Basically what I want to do is display the details of the product and just display a small loading image e.g. ajaxload.info. until the image is loaded.
I assume this is going to require some javascript/jQuery...