An IHttpModule implementation I created
public class ResponseTweaker : IHttpModule { // my module ...
is registered in Web.config
<system.web>
<httpModules>
<add name="redman" type="ResponseTweaker"/>
</httpModules>
and an instance of it is sitting in the pipeline.
From the perspective of a caller (e.g. from the Global.asax.cs file), how should I get a reference to that module instance?
I have a url like this:
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.
[Code]....
This seems very odd. I have declared the variable referrer as a global variable. Why do I get this with the Referrer variable? This page is accessed via a form on another website. It sends the http POST to this page. I was able to publish this to my live site, but for some reason vs is now giving me this error and caughing on this.
[Code]....
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.Source Error:
[Code]....
I have a user control with the following in the ascx page: <asp:TextBox ID="TextBox" runat="server /> And in the codebehind page, I have the following (Height and Width are public properties):
[Code]....
However, I'm getting a "object reference not set to an instance of an object" every time this method runs, and when debugging, it seems that TextBox is still null, even at the PreRender stage.
I did what should have been a simple code that changes an image inside a loginview based upon the date. It says "object references not set to an instance" which mean Nope can't find it. But I dont see anything wrong with my code
[Code]....
Page
[Code]....
I m Creating a Website Student Management And During Student Registration Getting this Error' Object reference not set to an instance of an object.'I m using LINQ Please Gv its Solution ASAP.my Code is :
protected void Button1_Click(object sender, EventArgs e)
{
{
StudentDataContext db = new StudentDataContext();
int flag = db.prcInsertStudent((Guid)Membership.GetUser(txtFirstName.Text).ProviderUserKey,txtRegNo.Text.Trim().ToString(), txtFirstName.Text.Trim().ToString(),
[code]...
It says sumlabel.text NullReferenceException was handled by user codeError: Object reference not set to an instance of an object, Where i went wrong?,
[Code]....
I am getting this error (Object Reference Not Set To An Instance) when trying to add a new record to a gridview. Kindly have a look and suggest what could be the problem here:
The Code:protected void Button1_Click(object sender, EventArgs e)
{
BeginAdd();
[code]....
I get the error in string order_code defination line.
I m working on ASP.net2.0 I m facing an error like "Object reference Not set to an instance" while filling dataset wht will b the Solution for this error?
View 8 Repliesi am trying to enter a value into a texbox that is placed inside a user control called CollectionRequest. i have referenced this user control in my code behind and created an instance of it but i seem to get the above error when i try to enter some manual text. code as follows:
protected CollectionRequest collReq;
protected void Page_Load( object sender, EventArgs e )
{
collReq = (CollectionRequest)LoadControl("~/CollectionRequest.ascx");
TextBox _txt_address = (TextBox)collReq.FindControl("txt_Address");
_txt_address.Text = "thisi is an address";
control has been referenced in source file
<%@ Reference Control="~/CollectionRequest.ascx"%>
i am caling this code in my Approval.ascx.cs code. both the user controls are displayed together in the default.aspx page one above the other.
I got this error.
This application for delete multiple record in gridview using Check Box.
. I tried before one application, that one finally worked,
That application also error occurred, but after some time it execute(automatic I didnt do anything) correctly,
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.
Source Error: [Code]....
Source File: c:InetpubwwwrootAdditionUpdateDefault.aspx.cs Line:155
I tried the datagrid cell editing. But i'm getting the following error. Error message is "Object reference not set to an instance of an object.". How to solve this error? Here i attached my code also.
<asp:TemplateColumn HeaderText="Appoinment Date">
<ItemTemplate>
<%#DataBinder.Eval(Container.DataItem, "followupdate")%>
</ItemTemplate>
<EditItemTemplate>
<input ID="DateTimePicker1" runat="server"
type="text" onfocus="showCalendarControl(this);" value='<%#DataBinder.Eval(Container.DataItem, "followupdate")%>' />
</EditItemTemplate>
</asp:TemplateColumn>
Dim test3 As HtmlInputText
test3 = New HtmlInputText
test3.Value = CType(e.Item.FindControl("DateTimePicker1"), HtmlInputText).Value
I'm getting the null value. How to solve this problem?
I have the following code on RowDataBound my gridview:
If (e.Row.RowType = DataControlRowType.DataRow) Then
e.Row.Attributes.Add("onkeydown", "javascript:ChangeRowColor('" & e.Row.ClientID & "')")
e.Row.Attributes.Add("onkeyup", "javascript:ChangeRowColor('" & e.Row.ClientID & "')")
e.Row.Attributes.Add("onclick", "javascript:ChangeRowColor('" & e.Row.ClientID & "')")
Dim lbl As Label = CType(e.Row.FindControl("BOD_NPRGSTA"), Label)
lbl.Attributes("onclick") = Page.ClientScript.GetPostBackClientHyperlink(GridView1, "Select$" & e.Row.RowIndex)
End If
I would use it to intercept the click on the row of GridView when I click on the Label lbl.The problem I have because when I click on the same label me "smashing" the gridview itself. (He added a blank row for no reason).
I noticed that when i am debugging my web application in Visual Studio 2005 using IIS, after about 10-15 minutes of inactivity, when I do something in the application such as a postback, I get an immediate error saying: "object reference not set to an instance" and my code breaks somewhere.Is my assumption correct that this is because my session has timed out? ( i do have a 15 minute default session time)my next question is, how do I display or set a way so that like many other pages, when the session has expired, a message will say: "This page must be refreshed" or "Your session has expired, click okay to refresh page" and start over again?
View 1 Replies 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 creating 3 tier arch wpp in VS 2010. I added the BusinessAccessLayer refernce in Presentation Layer. and I created DataAccessLayer[DAL] and ORM [DBModel.DBML]. when i try to create the instance for the Table in presenation layer[default.aspx], The Table name is not shown.After adding the DataAccessLayer refernce in the presentation layer, the table name[MM_User] instance are shown.Is it the right method [Adding the DAL refernce in Presenation Layer]? If not, whats the solution for for accessing the instance of the tables[MM_User].Is it related to the Creating the DataContextWrapper class in DAL?
View 5 RepliesIn the VS2005 environment, when I test my session to make sure the page redirects to the main page (itself) if the session is null, it works. There is no error.
The function I use for this is:
[code]....
However, when it is in the production environment in IIS 6.0, when the session has timed out, and I then do a postback by doing some slider control, I see the page reload but immediately thereafter, it throws a Server Error exception of : Object reference not set to an instance of object.
Looking at the stack trace, the event occured:
AJAXEnabledWebApplication1._Default.Slider1_TextChanged(Object sender, EventArgs e)
however, why is it that the Slider1_TextChanged event fired even even after during page_load, the page was told to do a response.direct ?? shouldn't the entire page have gone through a full-page refresh life cycle ? why did it continue on to attempt to raise the Slider1_TextChanged event?
im tryin to create a login form.
and am receiving the following error:
Object reference not set to an instance of an object
[Code]....
and heres my aspx page:
[Code]....
Stored procedure:
[Code]....
this works fine on my local site but as soon as i upload the site to my live server i get stem.NullReferenceException: Object reference not set to an instance of an object
on the first line of this:
if (!Page.User.Identity.IsAuthenticated)
{
pnlSignIn.Visible = true;
pnlSignOut.Visible = false;
}
can you please help me to brainstorm the possible causes of this error. I've got a paged repeater with localisation bound programitcally to an sqldatasource using a stored proc. I can post code if needs be but it's rather long. I'm looking for typical causes of this error + will make note for future reference!
erver Error in '/WebSite4' 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.
Source Error:
[Code]....
Line 233:Line 234: Repeater1.DataSource = PagedResultsLine 235: Repeater1.DataBind()Line 236: doPaging()Line 237: End Sub
I am trying to get the value of the id field in my gridview but I keep coming up with this error when i do selectedValue or selecteIndex
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
How do I get that id? What I am trying to do is when the user select that link it will delete that information from the database. Here's my code:
[Code]....
[Code]....
I'm new to programming in ASP.NET, but I'm making my way through Wrox's Beginning ASP.NET 3.5 in C# and VB.NET.
I'm at a section where I'm creating a BasePage. I successfully created a BasePage by creating a new class file in my App_Code folder called BasePage.cs with the following code:
[Code]....
If I run that code everything works out fine. The page loads and all is well. But, if I try to do the same thing to a page that uses my MasterPage.master file, I get the following error:
Object reference not set to an instance of an object.
Description:
An unhandled exception occurred during the execution of the current web request. 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.
Why is that? In the example code from the book (that also uses a MasterPage.master file), everything excutes and runs just fine. But in my test, I get the above error. I've tried comparing my pages to the books included source pages, but I can't find any differences.
In the same Code behind file I have:
// This works
Label lblTopNavBarInfo = (Label)Master.FindControl("lblTopNavBarInfo");
lblTopNavBarInfo.Text = "Currently Serving: + FirstName + " " + LastName ;
// This compiles but throws an error in the browser
LinkButton lnkBtnProductsOwned = (LinkButton)LeftNav_CustServ1.FindControl("ProductsOwned"); // The Control is visible
lnkBtnProductsOwned.Enabled = false; // Error: Object reference not set to an instance of an object.
I have a website written in C# that was running fine on one server. We moved it to another server and have a couple issues. I am mainly a VB.NET coder but can do a few things in C#. This is not a project - it is a website and can open it in VS2008 no problem. This is an admin site for the whole website where the user can add customer comments, etc. When logging in, it works fine. I can go to one of the admin pages after logging in and works. If I go to two other different pages, I get this error:
Object reference not set to an instance of an object.
[Code]....
It turns out this is in the main.master page and it is used by the other pages that load fine. The ApplicationTitle variable is set right in the web.config file and like I said, it shows on the other pages.
My question is why would this code work fine for some pages and not two others? All of these admin pages are under a folder called Admin and the web.config file is in the root folder of the website. Its almost like these two pages cannot see the web.config file in the root folder? Why would that be if thats the case?