I have 2 asp:TabContainers on the Page. The first one contains an Image control. The second one has a dynamic TreeView on one of the TabPanels. When I click one of the treenodes I change the URL of the image in the First TabContainer. However it refreshes the entire page. How to prevent that from happening? Below is the code behind when the treenode is clicked.
[Code]....
I know practically nothing about AJAX, but fully intended to utilize it in the future. Right now though I am noticing a behavior that may require that I implement it sooner then I planned.
I have been working on a fairily sophesticated web form that is made up of tables, dropdown lists, map buttons, and labels. As various controls are selected, specific tables are enabled or dropdowns/labels populated with information. All of this is working great, but when I put it all on a server and accessed it from a remote location, I noticed that every single action caused the entire page to reload.
From what I have read, it looks like AJAX and the UpdatePanel control will allow me to only refresh those areas that should be refreshed. Before I look further into implementing this, is this the only way to go? From what I have read on some other blogs, the UpdatePanel has some high performance costs.
I am created one gridview which contains image button.If i click image button call javascript using
onclientclick event from that calling same url page rebinding gridview again...while rebinding page
I have a command line C# server and an ASP.NET client, they both communicate via .NET Remoting. The server is sending the client still images grabbed from a webcam at say 2 frames a second. I can pass the images down to the client via a remote method call and the image ends up in this client method:
public void Update(System.Drawing.Image currentFrame)
{
// I need to display the currentFrame on my page.
}
How do i display the image on the a page without saving the image to the hard disc? If it was a winForms app i could pass currentFrame to a picturebox ie. picturebox.Image = currentFrame.The above Update method gets fired at least 2 times a second. If the client was a winForms app i could simply put picturebox.Image = currentFrame and the current frame on the screen would automatically get updated. How do i achieve the same effect with ASP.NET? Will the whole page need to be reloaded etc?
I have been cracking at this for a while now with no luck.
Using asyncfileupload control to upload a file and display the image. The uploading works fine and image is displayed if I reload/refresh the page.
But need to know how I can do this without reloading/refreshing the page.
After reading online posts, I see a recommendation to use scriptmanager but this doesn't work for me:
protected void FileUploadComplete(object sender, AjaxControlToolkit.AsyncFileUploadEventArgs e)
{
ScriptManager.RegisterStartupScript(this, GetType(), "TestAlert",
"window.parent.document.getElementById('" + img_ProfilePic.ClientID + "').src='" + "http://www.site.com/default.jpg" + "');",
true);
}
I have a requirement where a user logs on to a server where exists a website. The user bring up the site on a browser on that server and loads a power point presentation slide. At that time, users using their laptop clicks on the link to that site and sees that particular PPT slide loaded on the server. Then the operator/user on the server clicks on the second slide and the laptop would now see the second slide. Is this possible to do? If yes, then what technology to use? DHTML? or something else.
View 4 RepliesI am struggling on stop page refreshing when the image button is clicked.How i can i achieve this?I used triggers,javascript,.
View 6 RepliesI have 4 Image buttons on my user control and on the click of that Image button, I am opening new pop up window. I had used update panel but still it is refreshing the page. I don't want to refresh my page on the click.
<asp:UpdatePanel ID="SharePanel" runat="server">
<ContentTemplate>
<div class="full">
<h3>Share :
<asp:ImageButton ID="imgFB" runat="server"
ImageUrl="http://localhost:49524/mysite/Images/facebook_ico-1.gif"
[CODE]....
how can i use the refreshing a part of the web-page without all the web-page am using c#.net, it will be great if there is an example to how you can do that also i need to know how can i use the iframe to do that, or a good way to do that
View 5 RepliesIn a form, I have multiple images. Before saving the record, the image is been saved in a folder named "TransFiles". While saving, I move the image from TransFiles to location to be saved for the record.
For editing a record, when I change the image, it's been changed & saved to TransFiles. While saving also can successfully delete the existing image, save the new image with same name & finally delete the image from TransFiles folder. This all operations are performed perfectly well. In the server's images folder also, I find the newly added image under the name. But the Image control somehow shows the previous image only. On re-starting the app also. After 2-3 events of re-starting the app, it shows the new image.
What can be the reason for this ? The image is being stored in cache for that control or what ! How to show the proper image that's on the server on the Image control?
I have a grid where user will click on a button provided in each row to download the file.
After each download I want to update the download attempt.
but since I am using force download my databind method does not make any difference in the page.
I have an aspx page with a java applet. At the end of the execution, the applet navigates to another aspx page, in which there is a button that gives the possibility to execute the applet again. I would like this second page to reload every time the applet calls it, but unfortunatelly this doesn't happen. If I start from the applet's page, all works fine; but if I call the applet's page from the other one, when the applet redirects to this second page the load event does not fire. Probably the code could be clearer, so this is it:
Dummy.aspx
[Code]....
Dummy.aspx.vb
[Code]....
This is an ASP.NET web app built using VS2008. I created a standalone class with a method that exports the entire page, text fields, gridviews, images, everything to an Excel worksheet. It works fine. When I dropped the same class in another web app and tried to call it from a page, I get this error message:
[Code]...
I have a textbox within a formview that is binded to some data. The only problem is that the size keeps changing if the page is zoomed or screen size is changed.
Is there any way to set the the textbox to utilise the enitre width of a page regardless of zoom or screen size as currently on 75% zoom it remains about half way however on 100% zoom it fills the entire screen.
i have four web pages like(home,aboutus,contactus,loginform) and 1 masterpageby using link button i am navigating 2 this pages... while navigating the total page is refreshing... i dont want like thtonly content place holder should change.... without refreshing the page....
View 7 RepliesI have an input form on a page along with gridview and combo box. a user first select a filter combo box then click on search, to see a return values in a grid view format. then a user can enter new row once he / she cick add, i want the page to reload and the new inserted value to show in the gridview.
View 1 RepliesI have a panelA with a drop down list (ddl1) and a panelB with 2 dropdown lists (ddl2 and ddl3).
I am disabling PanelB in the page_Load section. When a selection has been made in the ddl1 in panelA, I am enabling panelB in OnSelectedIndexChanged event to enable ddl2 and ddl3.
This process is working, but as soon as I make a selection on ddl1, the whole page reloads to enable ddl2 and ddl3, which feels odd. How can I make it just reload panel3 not the whole page? I guess it can be done using AJAX update panel but as soon as I put <%@ Register Assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="ajaxtoolkit" %> and <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>, I start getting wierd error: Microsoft JScript runtime error: Sys.ArgumentTypeException: Object of type 'Object' cannot be converted to type 'Array'.
Parameter name: array
Redirect a page without reload/refresh the page.
Like gmail account.
I just want to know how to detect a page is refreshed or reloaded apart from Postback. Just clicking the reload button in the browser...
View 1 RepliesI am having an issue with content page refresh, when I change something in master page. My scenario is, I have a login button present in master page, on click of which am loading a modal popup with login controls. Once the credentials are valid, i am hiding the modal popup and stroing the user authentication result in a Session object. In content page's page load event, I am checking for this session object, for showing/hiding some of the controls based on the user logged in.The problem is, after login, the content page is not getting reloaded and proper controls are not shown to the user. To make the content page refresh programmatically, i added an UpdatePanel in content page and refreshed it after login button click event in master page. But still content page is not getting refreshed.
btnLogin_Click(){
//Check login credentials
if(success){
[code]...
I need to know if there is any server-side function/custom-code available to find out the HTML of the entire page which is causing the PostBack.
I don't want to do it using JavaScript/jQuery but instead do it at server side.
A JavaScript workaround that implements it can be found at this link. [URL]
Reason, Why I need it? I am writing some inline javascript in page which performs some vital actions and supposed not to be tampered by user(hacker). So, when a postback occurs, I would like to find out the HTML of entire page (at server) so that I can verify it (I have already generated the hash code for entire HTML while rendering the page to check it on consecutive postbacks) for non-tamering and then process further.
This is the reason why I need a way to find out the HTML of the page causing the PostBack.
I want to reload the page when the user clicks on the back button, from a particular page.Say for example there are three pages:
Page1.aspx,Page2.aspx,Page3.aspx
I want when user move from Page2 to Page3. When he clicks on "Back" button on browser page shld load I have tried adding a onload function JS in Page2 it works out. The issue is identifying user is coming from Page3.
i have a page it contains a User Control. in it we have a Button "View Tree" it will open a pop up window (contins a tree view).when we select any node in the tree the Corresponding item will be Loaded in the User Control and Close the Popup.i want to achive this With out re loading the total page. i am using VS 2008.
View 1 Repliesi have problem with radiobutton is in autopostback=true.
if i check rb1 page is refresh. after using update panel also i face the same problem in my code autopostback=true is compulsary beacause some controls open depending on this option..
i am try this code to open popup window popup window is open but page is reload
asp:DropDownList ID="ddlname" runat="server" CssClass="textbox2" AutoPostBack="True" OnSelectedIndexChanged="ddlname_SelectedIndexChanged"></asp:DropDownList>
<asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server" ErrorMessage="*" ControlToValidate="ddlname" Display="Dynamic" Font-Size="Larger" ForeColor="Red" ValidationGroup="addp" InitialValue="--Select--"></asp:RequiredFieldValidator>
protected void ddlname_SelectedIndexChanged(object sender, EventArgs e)
{
if (ddlname.SelectedValue == "New")
{
Response.Write("<script language='javascript'>window.open('AddSupplier.aspx','Popup','width=550,height=370,left=350,top=200,resizable=no')</script>");
}
i also use update panel then popup window cant open....
