http://www.somepage.com/main.aspx. In this page, when I click on a link it takes me to a page http://www.somepage.com/cental.aspx?cid=200. So in the cental.aspx.cs page I did the following in the page load:
if(request.querystring["comp"].tostring() != null) { //do some thing [code].....
So I got an error like: object reference not set to an instance of reference.My problem is, I am using the same page. So when I go from some page, I will have "comp". but other times not. So when there is no "comp", how do I handle it in request.querystring?
in my default.aspx page i have a dropdown List and a textbox with a submit button below that there are 2 listbox... and the dropdown list holds the names of the listbox
my logic here is to select an item from the dropdown list and put some text in the text box and submit the form which will add an item to the listbox selected.. but when i do this i get an error saying Object reference not set to an instance of an object. i tried to figure out the problem and found that when i remove the reference to the Site Master Page it works fine and when i undo and apply my reference back to the Site Master Page i get the same error.
I have two projects in my solution: MyApp.Domain and MyApp.WebService. MyApp.WebService is a WCF service library. I want to use some utility functions from MyApp.Domain. So in MyApp.WebService, I added a reference to MyApp.Domain. Intellisense picked it up just fine, it recognized the function I need to call. But when I build the solution, I get this error:
The type or namespace name 'Domain' does not exist in the namespace 'MyApp' (are you missing an assembly reference?) at using MyApp.Domain.Utility;
I am trying to copy code from one project to another. There is one problem however:
The type 'Microsoft.Practices.EnterpriseLibrary.Data.Sql.SqlDatabase' is defined in an assembly that is not referenced. You must add a reference to assembly 'Microsoft.Practices.EnterpriseLibrary.Data, Version=3.1.0.0, Culture=neutral, PublicKeyToken=null'.
I am using grid view as mentioned below, it is giving me error "object reference not set", but if comment allowpaging and pagesize lines, it works. let me know whats wrong I am doing?
I recently bought domain and hosting from godaddy.com and uploaded my website files based on asp.net on server.
The problem is when i run Default.aspx file in visual studio it runs properly but same set set of files when ran after uploading on server gives error in web.config file.
Description:Â An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.
Details:Â Â To enable the details of this specific error message to be viewable on remote machines, please create a <customErrors> tag within a "web.config" configuration file located in the root directory of the current web application. This <customErrors> tag should then have its "mode" attribute set to "Off".
<?xml version="1.0"?> <!-- Note: As an alternative to hand editing this file you can use the web admin tool to configure settings for your application. Use the Website->Asp.Net Configuration option in Visual Studio. A full list of settings and comments can be found in machine.config.comments usually located in WindowsMicrosoft.NetFrameworkv2.xConfig -->
My file based ASP.Net 3.5 website was working fine. For the pastcouple of days I am getting the following error.Unable to update auto-refresh reference 'ajaxcontroltoolkit.dll" Cannot findassembly c:Program filesMicrosoft ASP.NetAjax LibraryWebformsReleaseAjaxControlToolKit.dll.Project : c:mis.My ASP.Net 3.5 website root folder is c:mis. I browsed to subfolder Bin and looked atBinAjaxControlToolkit.dllAjaxControlToolKit.dll.refresh. The following was the reference...Program FilesMicrosoft ASP.NET Ajax LibraryWebFormsReleaseAjaxControlToolkit.dll
We have many different clients, and each client can have multiple user accounts.Right now, we have user settings set up on the ASP project, and a WinForms application can see these settings, depending on which user logs into the winforms application. They are specific to the user. I want to make them specific to the client, so users can be in "groups" by their client, and all users in the group would see/update the same settings.
i've been googling this for two days so here it both the error and the webconfig code.i directed the aspnet 2.0 exe to the application name/database
the problem is when the user tries signing up this error comes up, but the kicker is the user is place into the database ?The specified string is not in the form required for an e-mail address.
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.FormatException: The specified string is not in the form required for an e-mail address.
Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace: [FormatException: The specified string is not in the form required for an e-mail address.] System.Net.Mime.MailBnfHelper.ReadMailAddress(String data, Int32& offset, String& displayName) +1128747 System.Net.Mail.MailAddress.ParseValue(String address) +240 [code]...
I used this brilliant solution to convert a linq query to a datatable. But I'm getting a strange error when running it. Build succeeds though.
Compiler Error Message: CS0121: The call is ambiguous between the following methods or properties: 'Gruppkoll.App_Code.ConvertToDataTableFromLinqResult.ToADOTable<Gruppkoll.MessageSet (System.Collections.Generic.IEnumerable<Gruppkoll.MessageSet>)' and 'Gruppkoll.App_Code.ConvertToDataTableFromLinqResult.ToADOTable<Gruppkoll.MessageSet (System.Collections.Generic.IEnumerable<Gruppkoll.MessageSet>)'
I've tried re-building it and restarting the IIS. It seems as there are two classes with the same method but I've checked this and that's not the case. I'm using .NET 4.0 ASP.NET Webforms.
using System.windows.forms; using System.web.webcontrols.....
Textbox ambiguous reference error is occured from webcontrols and forms, how can i rectify this error... but i need those two namespaces in my asp.net page.
When I get an Object Ref error, it can sometimes be a real pain to find out which variable is causing the error (when you can't debug). Is there a way for this error to throw the classname that isn't assigned?
I added a service reference via the add service reference method. I can see all of its services in the intellisense but when I run the project and it executes the line where I instantiate the service : MyProjectName.ServiceReferenceName.IServiceReferenceClient client = new MyProjectName.ServiceReferenceName.ServiceReferenceClient;it throws this error:Could not find default endpoint element that references contract 'ServiceReferenceName.IServiceReferenceClient' in the ServiceModel client configuration section. This might be because no configuration file was found for your application, or because no endpoint element matching this contract could be found in the client element.
I'm using resources like this; " runat="server" />
Resources are maintained in a database and resourcefiles are generated when new translations are added. Sometimes bad references to keys happens. This results in error on the whole page.
How can I prevent the whole page from crashing when a resource does not exist? I just want a tiny error message where the resource lacks, like "Not found: Users.DetailsUserHeadline".
I also want to dynamically retrieve resources from code behind, by defining the key as a string "Users.DetailsUserHeadline" without any erros.
i have added a service reference but i am unable to access the methods, there is a method call "GetContactById" which i can see when i add the service but i am unsure how i can get to this in code. i have tried creating an instance first but i get this error
Error 116 Core.omnetService.OMWCoreSoap' is a 'type', which is not valid in the given context
omnetService.OMWCoreSoap test = omnetService.OMWCoreSoap(); test.GetContactById(strKey, UserId.ToString());
I am writing a program that uses a .dotx template and does a merge of data in an aspx page. The program works perfect on my Dev workstation locally but when I deploy it to a test IIS server, it fails on the second line below giving me an Object Reference error.
I ran into problems earlier because the Word Com object was not on the IIS server so I loaded Word onto the server and set permission in DCom and got past that problem. But now I get this error on the line that starts with wRange = . As I said, the program works perfectly locally in debug mode.
Microsoft.Office.Interop.Word.DocumentClass System.NullReferenceException: Object reference not set to an instance of an object