I am doing a tutorial where you use a templatefield in the gridview control to call a function. I don't understand the code for the function. What is the object Northwind.EmployeesRow? This is the tutorial I am doing. Tutorial 12: Using TemplateFields in the GridView Control And this is the code for the function.
Protected Function DisplayDaysOnJob(ByVal employee As Northwind.EmployeesRow) As String
If employee.IsHireDateNull() Then
Return "Unknown"
Else
' Returns the number of days between the current
' date/time and HireDate
Dim ts As TimeSpan = DateTime.Now.Subtract(employee.HireDate)
Return ts.Days.ToString("#,##0")
End If
End Function
Which version of Northwind db can I install with VS 2010/.net 4? Can you pls give the link for downloading the same. Also can somebody tellme the steps to go about starting SQL service I have already installed VS 2010.
i need the northwind databse. i dont have it in the database where i can find it and who to add it to my database in sql server so can i c it in the combo box off the database
I am a .net developer.I am not that strong in SQL.I need a simple query.This is from Northwind Database.
select 'Select All' as CustomerID,'Select All' as City union(select CustomerID, City from Customers order by City)
i need to get output like 1st row should be Select ALl Select All and next rows should be output of this stat..(select CustomerID, City from Customers order by City)
i am not getting this...i can do by keeping the second query result in temp table and then using union... but i am looking without temp tables or simple query.
i was attaching northwind database with sql server 2005 so while attaching it gives me an error an exception occured while executing a transct -sql statemnet or batch ,unable to eon physical file "C:sql server 2000 sample database orthwnd.mdf"
I am a complete newbie when it comes to ASP.NET and SQL database access. I'm trying to learn so that I might become gainfully employed one day soon and better my life. I'm running through the Visual Web Developer Express 2008 beginning walkthroughs right now and I'm already stuck on the third one -- Walkthrough: Basic Data Access in Web Pages. I've installed MS SQL Server 2008 and downloaded the sample Northwind and pubs databases, and even (I think) attached the pre-built files using the DOS command: sqlcmd -S .SQLEXPRESS -i instnwd.sql. (Output was: Changed database context to 'master'. Changed database context to 'Northwind'.)
But, now, when I try to Add Connection through the Database Explorer in VWDE2008, nothing comes up in the Connect to a Database field. Shouldn't it auto-populate? If I'm supposed to manually type a name in there, what should it be? I've tried "Northwind" and "SQLEXPRESS" with no luck (getting a generic Unable to Connect message). I've verified the database is running with SQL Server Configuration Manager and that all Client Protocols are enabled.
i have a first page and user selecting some products. Passind with session. Retrieving from first page. And in this point i want to connecting my northwind db and display selected products detail side by side in my second page. (listview or datalist) here is my second page codebehind.
I'm trying this example: [URL] I got it to work before, like 6-months ago. I'm coming back to this now and I can't seem to get the example working. Do I need to create a query in SSMS and then set up my Master/Detail views off of that? It seems like the GridView is NOT linked to the DropDownList and it seems like there is no way to link the two Objects.
I've been attempting to walk through the "Creating a Data Access Layer" tutorial found [URL]I create the DB connection, create the typed dataset and table adapter, specify the sql, etc.When I add the code to the presentation layer (in this case a page called AllProducts.aspx) I am unable to find the NorthwindTableAdapters.ProductsTableAdapter class. I tried to import the NorthwindTableAdapters namespace, but it is not showing up. Looking in the solution explorer Class View confirms that there is a Northwind class, but not the namespace I'm looking for.
I've tried several online tutorials that all have essentially the same steps, and I'm getting the same results.Can anyone give me a push in the right direction?I'm getting error: Namespace or type specified in the Imports 'NorthwindTableAdapters' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member.I think I might need to add a reference OR they may be creating a separate class and importing it into their main project. If that's the case, the tutorials do not mention this.
SuppliersTest2.aspx.vb: Imports NorthwindTableAdapters Partial Class SuppliersTest2 Inherits System.Web.UI.Page
I've been attempting to walk through the "Creating a Data Access Layer" tutorial found [URL] I create the DB connection, create the typed dataset and table adapter, specify the sql, etc. When I add the code to the presentation layer (in this case a page called AllProducts.aspx) I am unable to find the NorthwindTableAdapters.ProductsTableAdapter class. I tried to import the NorthwindTableAdapters namespace, but it is not showing up. Looking in the solution explorer Class View confirms that there is a Northwind class, but not the namespace I'm l ooking for. I've tried several online tutorials that all have essentially the same steps, and I'm getting the same results.
In 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.
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?
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'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.
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?
We have an applicaiton that was converted to the new framework using the wizard in Visual Studio 2008. When we install the applicaiton in production and change the iis settings to use the 2.0 framework we start to see these errors in the event viewer on the web servers. We are using SQL Server Session State and have 3 web servers in a load balancer. Object reference not set to an instance of an object.</Message><StackTrace> at System.Web.SessionState.SessionStateModule.PollLockedSessionCallback...
I have a webservice, it has few webmethods. when i create a client proxy and invoke the methods to check its response, i am getting this error. Can someone tell me what things can i check to know the cause of this? The error is not saying much hence blocked on this.