C# - N2 NullReferenceException On "Html.DroppableZone("h1").Render()"?
Mar 29, 2011
I'm currently evaluating N2 CMS for use for multiple websites. We would only like to offer the 'drag' functionality to our clients, which means they can add parts to Zones on the page, fill them out, and drag them around. The "backend" functionality of the management zone will be reserved for the developers.
Therefore, I don't use the SlidingCurtain control to render. Right now, I've made a custom Admin Panel that appears when a user with the correct role is logged in. Normally, the Sliding Curtain adds a "?edit=drag" query string to your URL when you click the 'drag' functionality button, so I add this querystring automatically after logging in.
If I do this, I get a NullReferenceException to the following line:
Html.DroppableZone("H1").Render();
As of this moment, there are no parts on this DroppableZone yet, and I suppose this is what is causing this problem. How do I get around this?
When I submit invalid data to test my form validation I get a NullReferenceException on the folloing line of code in my view:
[Code]....
I can't seem to find anything that's null.assessment.AssessmentDescr is populated with the expected string.assessment.Score is populated with the value 0.Any ideas as to what might be causing the NullReferenceException? Seems to me that Html.TextBox has everything it nees to render the TextBox.
I just upgraded my mvc 1.0 project to 2.0 using the wizard. My project builds fine however, my html helpers that I have used, does not render the input's ID tag. For some reason, only some controls render and some do not. For example:
[code]....
I thought it had to do with the fact that the value is empty, but from the two examples, they are nearly identical. Is this a bug? All was working before I upgraded.
i'm using some components. When page render, components generate html comment tags. if i'm using this component 10 times on one page, html comments inserted 10 times.
How to remove html comment tag before render page?
For some reason, i have to make a aspx page to let iphone/android to Post form. After the data processing of request.form , i have response a JSON string in plain text. However *.aspx will enforce to render html,head,body tag,so how can i disable it?
I cannot use ashx, because the mobile have to post image via form, as i search the answer by google ,ashx cannot handle the http post files.
Edit: As SLaks said, ashx can handle POST file using "context.Request.Files" and it works.
I have an application that renders HTML code to allow users to preview an email that the app sends out. The HTML is held in a string that is then put into the text property of a label. This is working fine, but now I need to also add XML to the HTML string for an email listener when the user clicks the Send button. The problem is that the XML tags are being ignored by the browser.
I am using web user control and making it visible false initially (page load) and on the selection of checkbox i am making it visible true. user control html is missing when i load it on checkbox selection. is there any when that i rebind the complete form again on checkbox selection so that user control html should be rendered.
i am really struggling to solve this issue since last two days.
how to make asp.net page fast render as fast as HTML page, this is my main and urgent requirement,
Acctualy My page conatins lots of data, images and videos from the database, so m facing the problem in page rendring, rendring is too slow, and client requires as fast rendring as HTML, i have studied a lot and found.....
Retrive data with the help of XML creates fast page rendring mean Retrive data from database in XML and then bind all the data in page from that XML file.
When the page loads it works fine. (and lots 10 links) on the update panel it hits the same function and tries to get another 10 links. I set the navigationURL to something like
"../Folder/Mypage.aspx?498592ghjgfosdfgo"
It is set identically both times(load and updatepanel postback) but when i try to render it to html the second time (on the update panel) it adds "../" to the front so i end up with
"../../Folder/Mypage.aspx?498592ghjgfosdfgo"
The function where it changes here
Public Shared Function RenderControl(ByVal c As Control) As String Dim sw As New IO.StringWriter Dim htmlw As New HtmlTextWriter(sw) c.RenderControl(htmlw) Return sw.ToString End Function
c is the hyperlink which has the propertry navigationurl (this never gets changed) but the sw which ends up looking like this on load
Iam getting the below string in a variable"result" after xslt tranformation. if i do Page.ParseControl(result) iam able to render controls to the page. But the requirement is different. I have 4 place holders in that aspx page.I need to bind div id="Section1" to placeholder1, div id="Section2" to placeholder2 and similar the other two sections also to the corresponding place holder. how can i loop and add controls to corresponding place holder.
I have a dynamic page which has repeating input text fields and is build using Jquery. I use C#.net to get the data to be displayed on the input fields. My question is on how do I handle single Quotes and double quotes while rendering the input field. I create jquery string on page render and uses that to render the input fields on the page. But if any of the input fields contains a html tag with double quotes then it screws up the whole page. Let me know I this make sense or need more explanation.
I would like to be able to render a view in ASP.NET MVC so that all css classes in the elements are rendered inline in the tags. The sole purpose of this is to have email clients recognise html, as I believe that style must be inline for it to be recognised in email messages.
Is there any facility in ASP.NET MVC (or ASP.NET) that allows this?
Is it possible to read an .aspx-file from the filesystem, probably translate it into the Page-object and then render it into HTML? And then writing it back to the filesystem as a .html file.
The .aspx file on the filesystem is without the codebehind file. If possible provide me some example code.
