I am using some AJAX and some JQuery for Login panel animation in Master page.Also in my home page I am using AJAX Tab container.It works fine when I run the application without login.If I logged in I got the following error when I put the breakpoint into my code,
Microsoft JScript runtime error: 'document.getElementById(...)' is null or not an object,It shows at the following Line at the Home[dynamic] page.
let me see if I can explain this clearly. I have a gridview control and I am trying to use the Edit function. In my gridview, there are numerous rows. I pick one to change and click Edit. I then see the boss name in my gridview and click "Change". When I click Change, I'm expecting two fields to appear, one is a label, the other is a DropDownList. I get this error when I click:
System.NullReferenceException was unhandled by user code Message=Object reference not set to an instance of an object. Source=App_Web_lzmklgbg StackTrace: at Training_TRManageOrg.LinkButton1_Click(Object sender, EventArgs e) in d:projectsediting.aspx.cs:line 108 at System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e) at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) at System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) InnerException:
I am stuck into a problem, i have a user control ProductListing.ascx that contains ListView binded to an object datasource, SelectMethod and SelectCountmethod are provided as well. Everything works fine but the problem started when i add another user control declarativlly Filter.ascx in the productListing.ascx. I want to assign value to a public property MaxPrice in Filter.ascx. I am trying to set this property in the SelectMethod of ObjectDataSource. Usercontrol "Filter.ascx" throws null reference exception when i try to set its MaxPrice Property.
I tried to acced the usercontrol in Databind method of ListView , it is accessible here but viewstate is empty at this point, i saved the value in viewstate in SelectMethod of objectDatasource but i cant access viewstate in ListView Databind. Its empty. Its a simple code and no rewriting to viewstate elsewhere.
Important: My Codebehind files are in a seperate project and .ascx files in seperate project
I developed a page in VWD 2008 and it works perfectly locally, but when I deployed it on the server every Page.FindControl() call is causing the NullReference Exception "Object reference not set to an instance of an object. " Can anyone help me out? Code is below
I have a class that derives from System.Web.UI.Page and have set my pages to derive from this custom page class instead of Page. At runtime, the controls are never initialized and throw a NullReferenceException. I've changed some class names and namespaces in the pasted code to protect the innocent. The only thing that I currently override in my PageBase is OnPreLoad and I do call the base.OnPreLoad. I'll eventually add more functionality to this PageBase but for now all that it has is this:
I've tried putting this into a class library (with System.Web referenced) and I've also tried moving the class into the web application and had the same results either way. As another strange twist, I have another class with derives from PageBase called IndexPageBase and it doesn't have this problem:
I have a TextArea html helper method I'm calling in a foreach loop. Basically, when I initially load the View it works fine, but when i reload the View and load postback data, the same TextArea throws a NullReferencException and yet the variable I'm using in the TextArea as the name of the TextArea is not null. I've attached a picture below for demonstration:
if it's difficult to see, the blue arrow below is pointing to the variable used to name the TextArea. Again, it works on initial load, but it errors out on postback when the page is reloaded. I'm not sure what's going on.
My controller calls a class in my model which is getting data from a REST web service. The class in the model then passes the data back to the controller using an IList, like so:
My problem is this: The data that is held in the IList isn't there until the user has done a search in the View, submiting a form. This is a basic search function with 2 textboxes and a submit button in a form. When the user clicks submit, the controller action is called, the web service is then called, and the data in the IList gets populated. The problem is that in the View I am using a strongly typed view and my model reference in the foreach loop throws a Null Reference Exception because there is no data in it, because a search has not been conducted yet... [Code]....
So, how can I have the above foreach loop in my view if there isn't any data in the model until a search has been conducted? Is there a better way that I should be doing this?
Essentially, what's the best method for passing data back to a view that is based on a form submittion?
We have a chart on a page that current is hard coded with test data, client likes and we are trying to now link to live data.I have tried different things in the code behind to build the url and keep getting Null Reference Exception even though when i debug the url is there and complete. I can take the value that i get in debug and paste directly to the browser and the chart works. so i know that im building the url correctly, but setting the .Src of the image in the page_load event doesnt seem to be the correct way to populate the image..Here is the complete link that is built in the code behind that is passed to the src of the image control.http://chart.apis.google.com/chart?hs=300x265&chd=s:bD&chdl=DVDs|DVDs+with+Scracthes&chdlp=b&chl=44|5&chma=40,60,0,40&chtt=DVD+Report&cht=p3&chco=751010|FFCC33 In the page load event i have the following:
I place a break point on the line where i set the src and as i step thru everything is correct and the src is being populate with the correct link, but when i step past that line, then i get the null reference.Now why is it that i can paste that link to the browser and it works.. and if i hardcode that link in the image src on my aspx page and comment out the code behind it works there also..
I am using httpcontext.Current in one my action method and i created the ms test method for testing this action and also i created the Mock object for httpcontect,but when i am trying to run the MS test script i am getting null reference exception from the line which i am using httpcontext.current in the action method.
When run, I can successfully authenticate and then when I attempt to view this particular content page I get an error on the page load where I'm trying to populate the dropdownlist. The error I get is a Null Reference exception. I don't fully understand the page lifecycle of an asp.net page, but I also don't understand why the page compiles successfully and its only when run that I get this exception. It seems that the control is not created when the page_load command is called. How can I change the contents of a dropdownlist on page load of a content page that requires authentication?
I have a gridview inside a user control bind to an object datasource. Now I want to bind the object datasource with a parameter from parent page. For this purpose I defined a public property in user control but how do I pass it with object datasource? I am calling from parent page like myusercontrol.parameter=querystring["id"]; How to bind object datasource with my parameter?
I have a page with some datasources in it. I am doing reenginering of the page itself and would like to split some parts of the page in several user controls. In my code I have an ObjectDataSource object with the following params
This piece of code automatically bind the hidden field "txtAlbumId" to the datasource. In my revision this datasource should be moved to a user control. What is the best way to handle a scenario like this?
</textarea></p> <input type='hidden' name='ID' value='34389' /> <input type='hidden' name='URL' value='http://forums.asp.net/t/1627446.aspx' /> <input type='hidden' name='CAT' value='Web Forms' /> <input type='hidden' name='BOARD' value='microsoft' /> <input type='hidden' name='P_DATE' value='Nov 26, 2010 08:25 PM' /> <input type='hidden' name='RANDOM' value='UEVLcNi9r' /> <input type='hidden' name='REPLIES' value='4' /> <input type='hidden' name='USER' value='aziz' /> <p><input class=subject type='text' size='90' name='SUBJECT' value='Web Forms :: How to parse a string variable for diplay in control' /><select name='INDEXED'><option value='1' selected>UPDATE</option><option value='2'>DELETE</option></select>Nov 26, 2010 08:25 PM - Replies: 4 CAT: Web Forms<a target=_blank href="http://forums.asp.net/t/1627446.aspx">View</a></p> <p> <textarea rows=10 cols=100 name='POST' onfocus='setSelRange(this, 0, 0)'/> How can i display the string variable data "234,345,567,678" into a listbox?
i wish to parse the delimited string as seperate items.
the string can vary in length. </textarea></p> <input type='hidden' name='ID' value='175584' /> <input type='hidden' name='URL' value='http://stackoverflow.com/questions/2866868/datasource-select-parameter-from-get-value' /> <input type='hidden' name='CAT' value='ASP.NET' /> <input type='hidden' name='BOARD' value='stackoverflow' /> <input type='hidden' name='P_DATE' value='May 19 10 at 15:21' /> <input type='hidden' name='RANDOM' value='XYAWdt1ps' /> <input type='hidden' name='REPLIES' value='1' /> <input type='hidden' name='USER' value='aziz' /> <p><input class=subject type='text' size='90' name='SUBJECT' value='c# - DataSource Select Parameter from GET value' /><select name='INDEXED'><option value='1' selected>UPDATE</option><option value='2'>DELETE</option></select>May 19 10 at 15:21 - Replies: 1 CAT: ASP.NET<a target=_blank href="http://stackoverflow.com/questions/2866868/datasource-select-parameter-from-get-value">View</a></p> <p> <textarea rows=10 cols=100 name='POST' onfocus='setSelRange(this, 0, 0)'/>How can I use the value of a GET form value as a SelectParameter?
I just like to know how to pass a parameter to the datasource of my dllItemCodeFooter and dllItemCodeEdit Drowndownlist which calls my getItemCodeList(decimal categoryID) method in the code behind. The value of the parameter will be seletectedValue of the first dropdownlist ddlCategoryFooter or ddlCategoryEdit).I know it could be done in code behind, but i prefer to bind my datasource in asp page. I want to achieve something like this DataSource='<%# getItemCodeList(ddlCategoryEdit.Seletected)%>'
I' m using a web custom control to upload images and mark them as primary. all the flow is working fine but it fails to mark images as primary in a diffrent category(there are four categories in which we can load a image-,catalog,primary,misc).It works in - category but not in others when I debug it is failing at a condition in grey . If it is not an element of the Datalist item it would not even enter the loop. I' m lost and unable to find the reason.
On the HTML code is rendered only the first view or the view that is activated on page load.
I have a webpage with a select object and a GridView object. For testing my problem i've created asp button and html button.On pageLoad the GV is empty and select is being filled with names. (GV is not appearing)After choosing a name from the select options, the user should click a button and then the GV need to be filled with relevant info.I am having 2 "related" problems:
1. When clicking on the asp button and getting into the click function on the aspx.cs file, i can't find the select object and retrieve the selected option. How can i get this?
Before I use magic ajax, it was not a problem that if it's not ajax call, I can perform document.getElementById("button1").click();
However, in asp.net ajax extension, I can not do this and it reports a run time ajax error:
Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 500