AJAX :: Reference Not Set To An Instance Of An Object?

Feb 19, 2011

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]...

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[Code]....

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Sep 30, 2010

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[Code]....

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MVC :: "Object Reference Not Set To An Instance Of An Object." In Ajax Calls

Feb 25, 2010

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State Management :: Error Like: Object Reference Not Set To An Instance Of Reference?

Aug 25, 2010

I have a url like this:

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Nov 15, 2010

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[code]....

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Apr 20, 2010

im tryin to create a login form.

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[Code]....

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Stored procedure:

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Apr 21, 2010

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erver Error in '/WebSite4' Application.

Object reference not set to an instance of an object.
Description:
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[Code]....

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[Code]....

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[code]...

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Data Controls :: Accessing DropDownList In GridView Row - Object Reference Not Set To Instance Of Object

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I have this part in the Gridview.

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[Code]....

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private void FillDetails(string pId, out string Name, out string Address)

[code]....

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Here's what I have so far:

[code]...

[Code]....

[Code]....

My guess is that the source of the problem could be in the foreach loop from my cart class, shouldn't I be using that for arrays only? If I need to post any markup code or any other class, let me know.

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[code].....

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[code]....

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[Code]....

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[Code]....

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Usage :

[code]...

The problem is it gives me 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.

Source Error:

Line 21: {
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Line 24: }
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