Question

I need to define what a child is:

I need to write something like var parent = categoryID == ParentCategoryID = 0

Here is my ASCX control:

protected void Page_Load(object sender, EventArgs e)
{

    categoriesBLL categoriesLogic2 = new categoriesBLL();
    rptCategories.DataSource = categoriesLogic2.GetCategories();
    rptCategories.DataBind();

}

I am display the values from a query which show up like this:

<ul class="categories">
<li>Computers</li>
<li>Hardware</li>
<li>Software</li>
</ul>

As you can see hardware and software should be sub categories but they show up in the same UL block as just another LI.

My Dataset looks like this:

I have a query which will determine the sub categories here:

SELECT        c1.CategoryID, c2.ParentCategoryID, 
              c1.Name, c2.Name AS ParentName, 
              c1.Published, c1.Deleted, c1.PictureID

FROM          Nop_Category AS c1 INNER JOIN
              Nop_Category AS c2 ON c1.ParentCategoryID = c2.CategoryID

WHERE        (c1.Deleted = 0) 
AND          (c1.Published = 1) 
AND          (c1.ParentCategoryID = @ParentCategoryID)

But how to pass the value for a category into my dataset for it to return the results?
I then need to create a new ul li:

<ul class="sub-category">
<li>Hardware</li>
<li>Software</li>
</ul>

Answer 1

1. Create a stored procedure and out the sql query in it also this proc will take parameter @ParentCategoryID
   and return result you want
2. Right Click on your .xsd and Add Query
3. In “Choose Command Type”
   Dialog select use exisitng stored procedure Select the stored
   procedure you created in step 1
4. Give the method a name you prefer e.g. GetSubCategoriesByParentId
5. Click Finish

Now you can use the method in your code like this Nop_CategoryTableAdapter.GetSubCategoriesByParentId and pass the parentCategoryId to get subcategories back