I have situation where I'm opening a modal window using javascript i.e "download.aspx", On this aspx file I have a textbox to input ID and based upon this ID I query server and then download and XLS file from a location.
I'm using Ajax on my parent window .
Every thing goes fine , but when I do Response.Transmit("~/filename.xls");
Also I'm registring the Javascipt with "RegisterClientScriptBlock()" or RegisterStartupScript()
I'm getting follwing error
Sys.WebForms.PageRequestManagerServerErrorException: The script tag registered for type 'ASP.downloadxls_aspx' and key 'TicketNotExist' has invalid characters outside of the script tags: alert('Recipient does not exist:'). Only properly formatted script tags can be registered.
have you tried to do a Response.Redirect("~/filename.xls") ?
Call RegisterClientScriptBlock passing true as the final parameter, indicating that you are passing script without script tags and you want the ScriptManager to add them for you. Eg:
scriptMgr.RegisterClientScriptBlock(this.GetType(), "TicketNotExist",
"alert('Recipient does not exist:');", true);
Related
I currently have a js file that gets loaded with a page.
Now that .js file has the following statement in it
$("#Click").on('click', function () {
__CHILD_WINDOW_HANDLE = window.open('MyPopUp.html', '_blank', 'width=700,height=500,left=200,top=100');
});
From the above statement when the user clicks on the "Click" button a child window (MyPopUp.html) should load up , however I get the error
The resource cannot be found.
My question is how do I specify the path of the html file ? The only way I am familiar with is through RouteConfig.cs in which Ill need to introduce another controller. Any suggestions on how I can accomplish this ?
I solved this issue by creating a separate controller and then having that controller return the html file. Also since I am using razor html files are not allowed so I had to return back a cshtml file.
I need to check pictures extension when user has chosen picture and try to upload it into picture library.
I've found the way to edit master page with js script, but i haven't to edit master page. Then i try to use event receiver Adding, but it can't get the name of file or file path. I used:
var file = properties.ListItem.File.Name; //properties.ListItem - returns null
AfterProperties also returns null.
The another way i see is to edit Adding Picture form with js:
I think is's simplest way but i can't found information about it.
Problem: how to set js script to the form (see picture) or how to do such actions with another way
It can be realized with event receiver ItemAdding and with
properties.AfterUrl
The same answered question with code in:
Customizing upload file functionality in SharePoint picture library
In your case, a simple JS form validation will do.
First I would prevent default action of the submit button.
Then, I would analyze the contents of the filename textbox and check the extention. If it's not one of the listed in the validation script, return false + alert "THis file extention is not supported".
Why would you want to use event receiver? It catches the event on server side.
I have a asp.net form with 5 HTML file input controls with runat=server and a submit button. after user selects the files and clicks the submit button, the files are upload in the server.
Problem is the HTML file input controls are editable, and user can edit the path after he has already selected the file from the browse button.
If he enters a invalid file path, the file is not uploaded because it does not exist.
How can I stop users from manually changing the file path? I have tried to make the controls read only, but it disables the browse button also.
You can't. Write your server side logic to cope with missing uploads.
you could try something like having a hidden field and when the user selects the file from browse, it populates to the hidden field as well. Then when they upload, you either read from the hidden field for your upload or using JS replace the values back to the original control and read from that.
Is this what you want to have...
You can do like that hiding the control when user select the file
and showing only the path to the user
in a div
if he disagree, let him click on a link called Choose Another next to the path div, so when user click Choose another toggle the same div with flushing the previous value
see this fiddle : http://jsfiddle.net/T2D3X/
While brian's suggestion works (Thank you brian for this), finally we decided to follow the server side handling approach. since in case of invalid file, the file size would be zero, so the response is instant and we do not need to wait till the file is uploaded because in this case there is not file in the first place.
//check if file exists
if (uploadCtrl.PostedFile.ContentLength > 0)
{
uploadCtrl.PostedFile.SaveAs(fileNameWithPath);
uploadCtrl.Dispose();
}
else
{
fileNameWithPath = "invalid";
}
You can also use these methods:
One before validating: http://jsfiddle.net/T2D3X/1/
One After validating: http://jsfiddle.net/T2D3X/2/
Friend of mine posted the same answer before I have re-modified it.
There are some internal jsfiddle error on second link you can ignore that, i have just added more functionally to check on submit what value exactly you are sending.
Let us know if you find the it helpful ;)
Thank!
What is the best way to show the server-side generated HTML (full page) into a new popup window? It should be triggered upon clicking a button (causing a postback to the server).
Thanks
Edited:
The HTML content are dynamically generated in the code behind and the content is full page (<html> ... </html>). Upon clicking a button on the web page, I would like to get the generated html content and pass it to the browser and show it in a new popup window. The content will be the final result (UI) not HTML tags.
You can send the same page with mime type text/plain
For instance with a
<a href="same url?mime=textonly" target="_blank">
On the asp server, when the argument mime=textonly is detected, you change the mime type to text/plain
Perhaps I should have started with a comment to get more information but can you not:
Post back to a new window on click? <a target="_blank">
Though if the requirement is for the server to generate the new window, just append something like:
<script>window.open('title'); </script> at the end of the response and have the server populate that.
You could probably have the server code save the HTML to a file and output <script>window.open('urltothefile');</script>. Just make sure that you write a unique filename each time.
Alternatively, you could have the server code store all related information into a database and output <script>window.open('showResult.aspx?id=123');</script>, where 123 is the id of the database record. Then in showResult.aspx, have it generate the required HTML.
Another option is to output the HTML into a div with style="display: none", then have some javascript to assign the innerHTML to the newly opened window. eg:
var w = window.open ('_blank');
w.document.body.innerHTML = document.getElementById("returnedHTML").innerHTML
One more possibility is to have a WebMethod. I don't really remember how to declare one, but it is a server function that can be called from the client. Open the window via javascript, call the webmethod and place the result as the innerHTML of the newly opened window; Pretty much like the previous option.
All these are good but they don't work when you use UpdatePanel and partial rendering. If that's the case, it's a whole different story.
I have a page that is referenced via a <script> tag from a page on another site. In the script src, I pass in the form I want my script to build (from a db table), and the div where the dynamically built form should go. The calling page looks something like this:
<div id="FormContainer"></div>
<script type="text/JavaScript" src="http://www.example.com/GenerateForm.aspx?FormId=1&div=FormContainer"></script>
GenerateForm.aspx contains the code that reads the QueryString parameters for the FormId, and the Div Id, and outputs JavaScript that will build the form.
My question is this. What are the different methods for "outputting" the JavaScript? Some of the JavaScript is static, and can be packaged into an external .js file and I have jQuery too. But should I add that on the GenerateForm.aspx markup page? Or should I use a ScriptManager?
And what about the dynamically built JavaScript? Currently I'm just using Response.Write() for a proof of concept, but instead, should I be doing something else? Use a Literal control on the page and set its value? Use a ScriptManager? Something else?
I know this is a verbose question, so thanks in advance!
If you want to use a seperate, referenced Javascript file, you probably want to do is use an ashx file. Basically this is just a generic handler that you'll use to write directly to the output stream without having to deal with the ASP.NET page lifecycle. If you add a basic Generic Handler (.ashx) to your site from the Add New Item dialog, the template should be enough direction, using context.Response.Write() to output your Javascript dynamically.
The ScriptManager is more useful if you want to output individual lines of Javascript to be ran at certain times, like after an event has fired. Then you can do ScriptManager.RegisterClientBlock(this, this.GetType(), "CodeBlock", "alert('Button clicked');", true); to show a client alert box after a button has been clicked, for example.
Static files should be handled just that way - statically. The server can handle the caching, and does not cause unnecessary processing if you reference the static script file directly from the script tag. However, if you need to load a static script dynamically, you could, for example, create a literal that had the <script> tag inside it. This way it uses the browser's cached version of the static file.