asked on

Obtain & check items in Generic list

I'm new to generics, and trying to check to see if the list I get back has any values. So far I've been unsuccessful in figuring out how to check this. Here's how I defined my generic list in the page I'm working with:

private List<sss.DataTier.Categories.Category> categoryList = new List<sss.DataTier.Categories.Category>();

...

private void LoadCategoryList()
{
categoryList = sss.DataTier.Categories.CategoryContentItem.GetCategoryList(sss.DataTier.Categories.ContentItemType.Values.RecipeVersion, recipeVersionID);
}

and finallly here's my If statement in which I'm trying to figure out how to check the list for categories:

protected bool CheckRequiredCategory()
{
if (categoryList. < 1) <<Not sure what to do here
{
return false;
}
else
{
return true;
}

Here's a print screen of values I get as options for the list: http://www.webfound.net/forum_posts/list_options.jpg

the type of records we're populating the list have column values such as the following:

            C.CategoryID,
            C.ParentCategoryID,
            C.Name,
            C.Description,
...

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mjmarlow

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dba123

ASKER

yea, I did try that but it didn't like it, gave me an error. I will post that error tomorrow...thanks.

mjmarlow

While I certainly love to get layups like these, I would be a schmo if i didn't point you to a great source of information. In VS 2005, double click on the word List in your source file, then press F1 key. A help file will launch with details about the "List" class.

dba123

ASKER

cool, thanks! I will also post that error tomorrow. I had actually this when I tried it before I posted this thread:

if(categoryList.Count == 0)
{
// categoryList has items in it
}

mjmarlow

One reason that you would get a runtime error is if sss.DataTier.Categories.CategoryContentItem.GetCategoryList is returning null.

One reason you would get a compile time error is if sss.DataTier.Categories.CategoryContentItem.GetCategoryList does not return List<sss.DataTier.Categories.Category>

dba123

ASKER

ok, so if it returns null, how can I tell it not to error out and to change the null into zero?

dba123

ASKER

hmm, when I go to the properties of my .sln which is tied to all the projects I'm working with for this site, they're set to 'debug' in the configuration properties. So not sure what else here...

dba123

ASKER

also, comparing against 0 or < 1 doesnt' seem to work, it may be null.

doing this "seems" to work but I can't get my debug points to fire when using IIS mode

if (categoryList.Count == null)

dba123

ASKER

ok, I asked a team member. Here's what I had to do. I had set it to the worker process, however it was set to try to debug SQL. So I changed the following

1) Attach to worker process
2) Before clicking OK, changed the "Attach to" to Managed Code using the Select button. It was set to "Automatically determine the type of code to debug" prior which is why it was trying to debug my SQL instead of my managed code

jagadeeshbandlamudi

private List<sss.DataTier.Categories.Category> categoryList = new List<sss.DataTier.Categories.Category>();
sss.DataTier.Categories.Category oSdc = new sss.DataTier.Categories.Category();
oSdc.CategoryID=000;
oSdc.ParentCategoryID=000;
oSdc.Name="XYZX";
oSdc.Description="XYZX";
categoryList.Add( oSdc);
protected bool CheckRequiredCategory()
{
if (oSDc.oSdc.ParentCategoryID< 1)
{
return false;
}
else
{
return true;
}

Is this wat you are looking for

Obtain &amp; check items in Generic list

Obtain & check items in Generic list