Create a webshop with Asp.Net - Part 4 Content Management

[Admin]

Continuation about Entity Framework

Learn all about updating and deleting data using Entity Framework

[Ayed]

thanks so much for these helpful tutorials, Can you upload a full copy source code (that involves all lessons), Thanks again.

[afshar]

Thanks

[George]

Thanks a lot Michiel! I allready learned a lot from you. Can't wait for the next lesson.

(Maybe you can also explain in a future lesson how to make an inventory-count of items, where the database is modified when an item is purchased. For example there are 100 brakedisks, there are 4 bought and the inventory is modified to 96 items in stock. I'm trying to figure it out, but no luck so far;))

Thanks again for your great lessons.

[mak]

thank you for wonderful tutorials......your tutorial helped me a lot ..please upload the next part as soon as possible.......once again thanks a lot.

[milke]

Thank you for your wonderful Tutorials
....waiting for your next lesson

[redbeans]

Hi Michiel i am encountering an error in this tutorial
whenever i click edit  in the management page this exception shows up:

ManageProducts.aspx.cs

private void FillPage(int id)

{

//Get selected product from DB

ProductModel productModel = new ProductModel();

Product product = productModel.GetProduct(id);
}
Message=Object reference not set to an instance of an object.
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:





Line 32:

Line 33: //Fill Textboxes

Line 34: txtDescription.Text = product.Description;

Line 35: txtName.Text = product.Name;

Line 36: txtPrice.Text = product.Price.ToString();

please reply tnx

[thekidd24]

Having trouble with error Error 1 The name 'typeId' does not exist in the current context \App_Code\Models\ProductModel.cs

[thekidd24]

Located the error.  Thanks

[thekidd24]

I cannot get any products to show and when I did the edit page it never redirects.  I am lost.  I can add producst they show on the management page but never show on the index page and I cant get to redirect to edit them either....

[6orazd]

Hello Michael,
Thank you for the really good tutorials. I have the same problem that redbeans mentioned: when i click the edit link t get this massage: "Object reference not set to an instance of an object."
I got through the code and it is exactly the same as your code. Can someone tell me, what am i doing wrong?

[joe]

Hey
Whenever I click the edit button I get the same error as redbeans.
please you could help me out if know what's wrong.

Source error:


Rad 31:
Rad 32: //Fill Textboxes
Rad 33: txtDescription.Text = product.Description; (This one is marked as red)
Rad 34: txtName.Text = product.Name;
Rad 35: txtPrice.Text = product.Price.ToString();

[ben]

Michiel, could you please help me and the others out? I have the same problem as redbeans, and I don't know what to do about this error.

[Abel]

Jan 21, 2015 18:02:31 GMT thekidd24 said:

Having trouble with error Error 1 The name 'typeId' does not exist in the current context \App_Code\Models\ProductModel.cs

having trouble with the same error please help

[Sanjay]

ManageProducts.aspx.cs

private void FillPage(int id)

{

//Get selected product from DB

ProductModel productModel = new ProductModel();

Product product = productModel.GetProduct(id);
}
Message=Object reference not set to an instance of an object.
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:





Line 32:

Line 33: //Fill Textboxes

Line 34: txtDescription.Text = product.Description;

Line 35: txtName.Text = product.Name;

Line 36: txtPrice.Text = product.Price.ToString();