DataSource Controls :: Get Child Properties Using Parent Object Error / Cannot Access A Disposed Object

Feb 17, 2010

On DBML I have two entities as Parent, Child. I am trying to assign Child class properites in a Parent.

[code]....

I am getting the following Error:

Cannot access a disposed object.

Object name: 'DataContext accessed after Dispose.'.

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May 15, 2010

i am currently working on an asp.net mvc 2 web app using LinqToSQL. I would like to handle a scenario where a user comes form a country and for this i have set the users - countries db relationship and in my user model i have a CountryId property.

I would like to display the country name on my users display view, so i tried fetching the country name like this: User.Country.Name, but an exception occurs that i cannot access a disposed object. I understand that this is caused by the way i handle my users repository and service.

This the repository users code:

[Code]....

This is the service users code (the repository is not class level property, but a local one that gets dipsosed immediately after calling it):

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So, how could i handle such a scenario, where i would like the Country model to be also fetched in order to use it later? Should i convert the repository model a class level proprty in order not to get disposed?

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Jul 2, 2010

I tried to get the heade row text with the following code, but it failed.

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DataSource Controls :: Getting Error - Object Reference Not Set To An Instance Of An Object?

Jul 27, 2010

[code]....

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DataSource Controls :: Error - Object Reference Not Set To An Instance Of An Object

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[Code]....

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I have a parent & child table.

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I also have parent & child object class.I would like to use 1 C# function and 1 SP to handle the retrieve portion but I have 1 problem.I'm not sure how to assign the value from Reader to the object.I do something like this but I only get 1 country which is the last country.

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{
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Aug 13, 2010

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Forms Data Controls :: Access A Child Object's Field?

Mar 9, 2010

I have an Employee object. One of the fields of the employee object is Address object -- please see example:

[Code]....

I'm now trying to display employee information in a GridView but not sure about how to access the individual fields of the address object. I tried this but didn't work...

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I'm getting the old "Object reference not set to an instance of an object" error on this code:

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Web Forms :: Master Page Control In Child Page Error "Object Reference Not Set To An Instance Of An Object"

Aug 31, 2010

i have create dynamic menu control , i have master page and login page , once the user login , i want to show the dynamic menu in my master page. below i try to call masterpage control in my child page ,but i throughs the error

Object reference not set to an instance of an object.
my master page code
public partial class MasterPage : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
}
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set
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DataSource Controls :: Sorting A ListView Bound To LinqDataSource Based On Child Object?

Jul 22, 2010

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My web method returns object 'User' that has a lot of properties.

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[code]....

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I've posted the same question in the Object Data Source forum. This is a link to it http://forums.asp.net/t/1554083.aspx. Maybe I should've posted here to begin with. There seemed to be some overlap so I wasn't sure which was the best on to post the question in.

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I am receiving Object reference not set to an instance of an Object when binding Child dataGrid in the ItemCommandEvent of Parent dataGrid.

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Mar 24, 2011

I'm working on ASP.NET app and in the master page C# code I want to access the login control, so I have the following code:

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why I get this error:

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[Code]....

[Code]....

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[code]....

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I have a couple methods to handle the saving of an image using Request.InputStream. I have two extensions that share the HttpContext. In one of my methods, I'm using a BinaryReader to read in the contents and do the processing. However, naturally, when disposing the BinaryReader, it closes off the InputStream property on Request. My SECOND method uses the same input stream to create a thumbnail.

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[Code]....

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DataSource Controls :: Access Property Of Object As Session Variable As Declarative Datasource Parameter Value

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I am storing a custom "Organisation" object as a session variable. One of the properties of the Organisation object is "OrganisationID" (integer). I have a DataSource that requires a parameter value to run, and I want to use a SessionParameter to populate this. In a previous version, I stored the OrganisationID directly as a session variable. In that case, I could easily access it like this:

[Code]....

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DataSource Controls :: Simple Login Form - Object Reference Not Set To An Instance Of An Object?

Apr 20, 2010

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]....

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Forms Data Controls :: Get Error : Object Reference Not Set To An Instance Of An Object

Dec 2, 2010

I have a nested gridview

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when i try to get the text in the footer template of the inner gridview when clicking on the linkbutton!!!

[code]....

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