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'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?
I have the following H1Controller:
[Code]....
how can i passing a value form ActionResult to html.textbox or Html.TextBoxFor in View
View 2 RepliesI have some data which is HTML format saved in database. Like the chat as follows.
Roy, 2/11/2011:
Sree, 2/11/2011:
But it gets saved in some HTML format in Database as follows.
[code]....
So, Is there any ways that I can show this in Text box as what I need. While debugging the code, when I did HTML Visulaliser, it showed me correct format. How can I achive this in my Textbox control.
I have a textbox which I need to enter html code into (like < strong> or < em> for example).The trouble is this is causing an error writing this back to the database. A potentially dangerous Request.Form value was detected from the client (tbVOther="< strong>testIs there a way around this without turning off the request validation setting?
View 3 RepliesI have a comment form inside the blog posts. in the form, if the user is authenticated, I will assign the values of the user into textboxes. that part is as follows;
[Code]....
But when I add HTML.TextBox instead of HTML.TextBoxFor, I am not getting validation if the user erase the fileds. Also, this form is inside the indext page and it is related to another action as follows;
[Code]....
so I cannot assign ModelState.AddModelError from controller.
What should I do here.
If I add this to the ASPX page: <input id="Text1" type="text" value="Text1Value" /> I would expect to see "Text1" in the list of Request Form keys even WITHOUT setting the runat=Server property. request.Form.AllKeys I realize that if I do set that propery, then I will have a server-sided HTML control that I can reference using the name "Text1," but shouldn't I be able to access the text in the text box using the following VB.NET syntax? request.Form("Text1")
View 2 RepliesI have the following problem;My console app is running on the server and all I want to do is control it over ASP.NET Web Service.
I added new ASP.NET Web Service project to my Solution where my main console app and added reference to it.The problem is every time WebMethod calls function from console app, i get the nullreferenceexception. Even if I try to use static classes or singletons; every object is null, although my console app is running absolutely correctly.
m a pretty new developer so I'm not well versed in common ASP.NET problems.As a test, my boss asked me to convert a (not very critical) ASP.NET site from 1.1 to 4.0. Well, it's not extremely difficult and things are going well so far. However, I've hit a small snag. I keep getting a NullReferenceException when I run this code
View 1 RepliesI am getting a NullReferenceException thrown when trying to add to theList object. Clueless at this point about how to solve.
[Code]....
I followed the directions from MSDN on transferring data between asp.net pages.But when using the 'PreviousPage' property to access the previous pages controls, I get a null ref exception that PreviousPage is not set to an instance of an object.Here is my code:
public partial class Portal : System.Web.UI.Page
{
public string Username
[code]...
we have an MVC app that is after some time getting to some kind of bad state. I found only a couple of posts with a similar error message and they pointed to not changing up the routing table (after appstart). However this app doesn't mess with the routing table after appstart so that would appear not to be the cause of our problem. Recycling the app makes the error go away... for a time. Got 3 sites (all running of the same codebase) that this is effecting.
Just incase I'm doing something naughty in my application class heres a bit of source:
[Code]....
And the class that inherits from: [Code]....
Stack trace follows:[NullReferenceException: Object reference not set to an instance of an object.]
System.Web.Routing.RouteCollection.GetVirtualPath(RequestContext requestContext, RouteValueDictionary values) +97
As a test, my boss asked me to convert a (not very critical) ASP.NET site from 1.1 to 4.0. Well, it's not extremely difficult and things are going well so far. However, I've hit a small snag. I keep getting a NullReferenceException when I run this code:
[Code]...
I'm trying to call a dataadapter funtion to pass browser information to a database table upon logged in. I have also tried not assigning the function to an interget by setting the fucntion to not return a value. However in either case I get the System NullReferenceException.
[Code]....
I have some inline code in an aspx file that executes:
<dd><%= encode(Listing.Address.Line1) %> </dd>
Problem is, under certain circumstances the Listing object will be null and therefore references to properties such as Address will throw an exception. How do I handle that exception? I basically want to ignore it: catch it, and then proceed with regular execution/rendering of page.
I am having some issues accessing a literal in a usercontrol.
I get the following error: System.NullReferenceException: Object reference not set to an instance of an object. at page.sbPageLoad(String sTypeCD, Int32 iCategoryID, String SortExpression)
Does the following code below look right?
Here is my usercontrol named: topbanner.ascx:
Code:
[code]....
When I click on my btnMissionary_Click which is suppose to add a datatable row I am getting the following error:
System.NullReferenceException: Object reference not set to an instance of an object. If I add a entry right away it seems to work fine.
Here is my form
HTML Code:
<div id="container">
[code].....
Since I upgraded from MVC 2 to MVC 3 RC, using TryUpdateModel causes a NullReferenceException. This problem only occurs when running my action method as part of a unit test. Running it on the actual server works as expected. Here's a stack trace of the exception:
System.NullReferenceException: Object reference not set to an instance of an object. at System.Web.Mvc.JsonValueProviderFactory.GetValueProvider(ControllerContext controllerContext) at System.Web.Mvc.ValueProviderFactoryCollection.<>c_DisplayClassc.b_7(ValueProviderFactory
factory) at System.Linq.Enumerable.WhereSelectEnumerableIterator[Code]....
2.MoveNext()
at
System.Collections.Generic.List[Code]....
1
collection) at
System.Linq.Enumerable.ToList[TSource](IEnumerable`1
source) at
System.Web.Mvc.ValueProviderFactoryCollection.GetValueProvider(ControllerContext
controllerContext) at
System.Web.Mvc.Controller.TryUpdateModel[TModel](TModel
model, String prefix)
... my own code from here on....
In case it matters, my controller has the following signature:
[Code]....
My guess is that this has to do with the new way DI works in MVC3, but I can't figure out what I'm doing wrong. Perhaps there is something in terms of DI setup that is required in MVC 3, but wasn't required in MVC 2?
I am getting an exception like"NullReferenceException was unhandled by usercode-Object reference not set to an instance of an object." in (IEnumerable)Viewdata.Model.
<% foreach (EmployeeMaster m in (IEnumerable)ViewData.Model)
This is what I'm trying to run:
[Code]....
When I browse to www.mysite.com/mycontroller/myaction/myid, everything works ok. But visiting www.mysite.com/mycontroller/myaction produces:Server Error in '/' Application.Object reference not set to an instance of an object.Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
I need to get the html of a chart control built at runtime. When I call .RenderControl, I get System.NullReferenceException. What could the problem be? Is there another way to go about this (saving as image)? Below is my code.
[Code]....
I got a master page with a server control in it. Randomly the server control is inaccessible from codebehind. This doesn't happen on a specific action (eg a Button click or so). Currently I have no clue what this could be. I don't think it's output caching since this is not explcitly activated and the error happens far to seldom for that. But I'm going to disable caching in the master page explicitly with next deployment.
The control is defined in markup. The accompaning codebehind is:
PGFMainNavi.HasAccessToFunction = HasAccessToNaviItem;
// HasAccessToNavi is a local function
Exception is:
System.NullReferenceException: Object reference not set to an instance of an object
The following code has only thrown a NullReferenceException a handful of times over the last several months, but I'm not exactly sure why. The code isn't mine, but it looks pretty straight forward to me.
[Code]....
The only thing I can think of is that pageType is null when it's being used as a dictionary key, but apparently that is not possible.
The code that calls it is simple:
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
_mypage = GetPage();
}
I also thought that the error might be with the _section.Pages, but section is never null and never sets anything. If .Pages[page] returns null, the MyPage constructor simply returns. So what am I missing?
I am trying to get rid of the IE added header and footer such as Page Title, Page 1 of 1, Url, Etc..
I am using the following code. My goal is when a user click on the PRINT button within my application, I would call SetIEON, print the page and SetIEOff.
However, when my code gets to SetIEOn at
Dim oKey As RegistryKey = Registry.CurrentUser.OpenSubKey(strKey, bolWritable)
oKey.SetValue(strName, oValue)
it crashes with a NullReferenceException. I'm using VS 2008 .NET 2.0
See code below.
'Removing the header and footer in the Windows Registry
Public Sub SetIEOn()
Dim strKey As String = "SoftwareMicrosoftInternet ExplorerPageSetup"
Dim bolWritable As Boolean = True
Dim strName As String = "footer"
Dim oValue As Object = ""
[Code] ...
I am installing a website that uses CrystalReport to display reports on a customer's server. When trying to display a report I got an error at the following line:
<CR:CrystalReportViewer runat="server" AutoDataBind="True" EnableDatabaseLogonPrompt="False" EnableParameterPrompt="False" ReuseParameterValuesOnRefresh="True" DisplayGroupTree="False" .... />Error:
[NullReferenceException: Object reference not set to an instance of an object.]
CrystalDecisions.Web.CrystalReportViewerBase.set_ReuseParameterValuesOnRefresh(Boolean value) +28
ASP.memberpages_MyPage_aspx.__BuildControlCrystalReportVPI() in d:Web_apldomainMemberPagesMyPage.aspx:10
ASP.memberpages_MyPage_aspx.__BuildControlshow_filter() in d:Web_apldomainMemberPagesMyPage.aspx:9
ASP.memberpages_MyPage_aspx.__BuildControlContent(Control __ctrl) in d:Web_apldomainMemberPagesMyPage.aspx:8
System.Web.UI.CompiledTemplateBuilder.InstantiateIn(Control container) +12
ASP.memberpages_sitetemplate_master.__BuildControlSiteTemplate_Content() in d:Web_apldomainMemberPagesSiteTemplate.master:90
ASP.memberpages_sitetemplate_master.__BuildControlSiteTemplateForm() in d:Web_apldomainMemberPagesSiteTemplate.master:39
ASP.memberpages_sitetemplate_master.__BuildControlTree(memberpages_sitetemplate_master __ctrl) in d:Web_apldomainMemberPagesSiteTemplate.master:1
ASP.memberpages_sitetemplate_master.FrameworkInitialize() in d:Web_apldomainMemberPagesSiteTemplate.master.cs:912307
System.Web.UI.UserControl.InitializeAsUserControlInternal() +31
System.Web.UI.MasterPage.CreateMaster(TemplateControl owner, HttpContext context, VirtualPath masterPageFile, IDictionary contentTemplateCollection) +1978576
System.Web.UI.Page.get_Master() +48
System.Web.UI.Page.ApplyMasterPage() +18
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +543
I tried to set the same attributers programmatically in the Page_Load event:
protected void Page_PreInit(object sender, EventArgs e)
{
CrystalReportVPI.AutoDataBind = true;
CrystalReportVPI.EnableDatabaseLogonPrompt = false;
CrystalReportVPI.EnableParameterPrompt = false;
CrystalReportVPI.ReuseParameterValuesOnRefresh = true;
...
}
Here the NullReferenceException is thrown only in the »CrystalReportVPI.ReuseParameterValuesOnRefresh = true;« line. The same page runs on another customer's server with no errors. The server's environment is: Windows Server 2000 CRRedist2005_x86.msi dotnetfx.exe 2.0.50727.42 Has anyone encountered problems like this? Any idea how to solve it? I already searched for answers on different forums with no result.