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].....
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]....
I have taken a DataTable control and have added colums to it. Now i want to add rows to that DataTable but when i am trying to create a DataRow of DataTable, an error is generated, showing "Value of type 'System.Data.DataRow' cannot be converted to 'dataRow'".
exact coding that i have written is as follows:
[Code]....
So, where i am getting wrong?
I receive the following error in the code below: System.NullReferenceException: Object reference not set to an instance of an object. When I am logged into the page I do not receive the error. My Code:
Partial Class _Default
Inherits System.Web.UI.Page
Protected Sub SqlDataSource4_Selecting(ByVal sender As Object, ByVal e As SqlDataSourceCommandEventArgs) Handles SqlDataSource4.Selecting
Dim MemUser As MembershipUser
MemUser = Membership.GetUser()
UserID.Text = MemUser.ProviderUserKey.ToString()
e.Command.Parameters("@UserId").Value = MemUser.ProviderUserKey.ToString()
End Sub
End Class
I read the following online: You are trying to use a reference variable who's value is Nothing/null. When the value is Nothing/null for the reference variable, that means it is not actually holding a reference to an instance of any object that exists on the heap. You either never assigned something to the variable, never created an instance of the value assigned to the variable, or you set the variable equal to Nothing/null manually, or you called a function that set the variableto Nothing/null for you. The following is the Arthur's code example and his suggested fix which I am sure is right:
Private Sub TestString()
Dim a As String
If a.Length = 0 Then
Console.Write("Yes")
End If
End Sub
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
I am getting a "System.NullReferenceException" when I call
View 3 Repliesi hav e1 drop down list where is is to filter shif code , ddl text field contaoins shift desc and value contains shift code.
when i select particular shift description it has to show all the 7 days shift description on text boxes iam using informix database
i have 1 dropdownlist which contains shiftcode & shift decription. where shift code is datavalue filed and desc is dat text field. ddl is conected to sql datasource.
i am getting this error:
Object reference not set to an instance of an object.
[Code]....
Source File: C:srcAicWappPersonnelShiftTime.aspx.vb Line: 33 Stack Trace:
[Code]....
here is my code..
[code]....
[Code]....
i have a Problem, i made a ASP.NET Page with VS2010 and now i want to run it on a iis6 (windows server 2003) and i get the message:
[Code]....
The Source Code of the File is:
[Code]....
Why do this error only come on IIS6?
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 getting error after publishing a website. At debug mode it works fine.
Private Sub fill_ddl_Dist(ByVal _query As String)
Dim con As Connection
con = New Connection
TIP: When you are writing your question, there is a button on the tool bar that wraps the [code] tags around your copy/pasted code. Its the button with a '#' on it. More on tags. They're cool. Check'em out.
In code behind getting error: Code:
Dim mySqlSelect As String = "Select distinct GroupName from Vecellio.dbo.GroupsTable where GroupName like %" & prefixText & "% order by GroupName desc" Value of string: Select distinct GroupName from Vecellio.dbo.GroupsTable where GroupName like %A% order by GroupName desc
Error: System.Data.SqlClient.SqlException = {"Incorrect syntax near 'A'."}
All i did is added an existing webform from vs 2003 project to vs 2008. with Listbox1 control this error is appearing. value of type system.web.ui.webcontrols.listbox cannot be converted to "myprojectname.listbox"
i also have the control defined on the top: Protected WithEvents Listbox1 As System.Web.UI.WebControls.ListBox I have converted lot of pages which were used in vs 2003 to vs 2008 without any problem, also tried to right click teh webform and go to code gen file , but the file is not coming up.
i have installed ajaxtoolkit 3.5 but when i debug i am getting this error Could not load type 'System.Web.UI.ScriptReferenceBase' from assembly 'System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' even i have changed my tags to
<asp:ToolkitScriptManager
ID="ToolkitScriptManager1"
EnablePartialRendering="true"
runat="server"></asp:ToolkitScriptManager>
We are working on a web application and the target deployment includes Windows 2003 64-bit. When we run the application on the 64-bit OS, it gives the following error:
The entry 'asp:System.Web.UI:System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' has already been added
The web.config file includes the following:
<pages validateRequest="false" enableEventValidation="false" viewStateEncryptionMode="Never" theme="esl_theme">
<controls>
<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
</controls>
</pages>
And if we remove the line <add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>, it seems to work.
Can somebody understand the problem and take corrective action? The application does not compile on 32-bit OS without this.
I have created an application which runs fine in VS2010.Now i am trying to host that application using inetmgr.When i try to browse the page from inetmgr content view then i get the "Parser Error Message: Could not load file or assembly 'System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified".If i browse the page from VS i am able to do it.I am not able to host the app. may be the reason is the above stated error.
View 1 RepliesHow to assign system time(now()) to label, while webpage loading itself in asp.net.
Ex:
<asp:Label ID="Label15" runat="server" Text=></asp:Label>
This error is severely pissing me off
I have a main View which has an ActionLink that redirects to another View
[Code]....
This new view has a submit button
[Code]....
The problem is that when i click on "Update", i get the infamous No parameterless constructor defined for this object error in the controller. The Post Action is this:
[Code]....
Which it doesnt even get to! If i add a parameterless constructor:
[Code]....
I get the Ambigious error:
The current request for action 'UpdateActingRoles' on controller type 'EmployeeController' is ambiguous between the following action methods:
System.Web.Mvc.ActionResult UpdateActingRoles() on type ProjectY.Controllers.EmployeeController System.Web.Mvc.ActionResult UpdateActingRoles(ProjectY.ViewModels.Forms.ManageActingRolesViewModel) on type ProjectY.Controllers.EmployeeController
I want to get only the current date and not time in asp.net( visual studio 2008). But in 2008 we have the properties associated with time like System.DateTime. How to calulate only system date?
View 4 Replies my system i am having sql server 2005 standard edition.now i installed sql server 2008 r2 express edition and i am getting error like.."the service did not respond to the start or contorl request in a timely fashion"...
is it possible to install sql server 2008 r2 express edition in a system where sql server 2005 standard edition is already installed?
i am making a quiz system in asp.net using C# vs 2008.having one equestion per page,with previous and back button.each question have four options with only one correct answer.The options are in a radio button list.I have a database which has two columns as QuestionID,CorrectAnswer.
For viewing previous answer the user can click on previous button,so that he can see his previous marked answer and if feel he had marked the wrong option then he can mark the other one.
Some Problems:-when clicking the previous button the option which was marked in radio button list got unchecked!!So,the user is unable to know which he/she had marked before.I want that the option remains checked so that the user knows what he/she had marked previously.After completing the quiz how can the answers selected by the user be compared with the CorrectAnswer stored in database and can be displayed in the result page having four columns as QuestionID,CorrectAnswer,UserAnswer,Right/Wrong in a grid view. Though i am able to display the QuestionID and the CorrectAnswer in a grid view in the result page.
i am making a quiz system in asp.net using C# vs 2008.having one equestion per page,with previous and back button.each question have four options with only one correct answer.The options are in a radio button list.I have a database which has two columns as QuestionID,CorrectAnswer.
For viewing previous answer the user can click on previous button,so that he can see his previous marked answer and if feel he had marked the wrong option then he can mark the other one.
Some Problems:-
when clicking the previous button the option which was marked in radio button list got unchecked!!So,the user is unable to know which he had marked before.After completing the quiz how can the answers selected by the user be compared with the CorrectAnswer stored in database and can be displayed in the result page having four columns as QuestionID,CorrectAnswer,UserAnswer,Right/Wrong in a grid view.Though i am able to display the QuestionID and the CorrectAnswer in a grid view in the result page.
I have an existing project with a silverlight3 app. First I created SALESservice.svc.This is working fine. Now I added another TARGETservice.svc to my project and rebuilded my entire project but when I am trying to add the service reference in to the silverlight app I get the following error:
There was an error downloading metadata from the address.verify that you have entered a valid address. I didn't write any code in ISALESservice.svc AND ITARGETservice.svc . I have written in SALESservice.svc.cs AND TARGETservice.svc.cs files.Is this causing error? But for SALESservice.svc it is working. I didn't add any code in web.config file.
I want the same solution like Making A Cool Login System With PHP, MySQL & jQuery But in ASP.Net 3.5, SQL Server 2008 and jquery.
I want this solution for my ASp.Net(C#) site in which I'm using ASP.Net's default membership module and now I want to put its loginview and registaration system in a jquery modal windows and validate the user in the system and create the new user in the sytem by entering user credentials in the loginviews and registaration fields inside the modal windows and then by clicking on the button palced in the modal windows as well.
