Help adding switch value inside C# razor

[computerbarry]

Hi all

In short, I’m trying to convert an existing if else statement into a switch case which is used within a C# razor view.

Depending on the switch case, different icons and colors are displayed within the foreach loop displaying a list of different icons and colors.

The problem is, I’m not sure how to add the condition to the switch value from the old if else below:

 if (node.Data.Property_Taxonomy.Contains("0/2/2437/2446")){
                  noticeicon = "glass";
                  noticecolor = "red";
} else if (node.Data.Property_Taxonomy.Contains("0/2/2437/2447")) {
                  noticeicon = "music";
                  noticecolor = "green";
} else if ....

What is the correct way to add the if condition into the switch value?

I did try the string value below without success:

@{
IExtendedOrderedQuery nQuery = Query.Where("Property_ID")
.IsEqualTo("12345");
ReadOnlyCollection<ContentNode> notices = new NodeFinder().Find(nQuery);
 
var nodes = new List<ContentNode>();
nodes = notices.ToList();

string value = "node.Data.Property_Taxonomy.Contains(???)"

foreach(ContentNode node in nodes) {
switch(value) {
                 
                case "0/2/2437/2446":
                    sIcon="glass";
                    sColor="sliver";
                    break;
                case "0/2/2437/2448":
                    sIcon="heart";
                    sColor="red";
                    break;
                case "0/2/2437/2449":
                    sIcon="star";
                    sColor="yellow";
                    break;
                default:
                    sIcon="no icon";
                    sColor="transparent";
                    break;
                }
             
                <p>
                   @sIcon<br>
                   @sColor
                </p>
 
              }
          }

Any ideas?

Thanks, barry

[cpradio]

In short, if you need to use .Contains, you can’t. Switch statements are equals expressions, they cannot mimic .Contains

The only possible way to approach this using a switch statement is to make sure the input to the switch only contains the data you want to check against. That means the full value of node.Data.Property_Taxonomy can only contain 0/2/2437/2446 or the other variations you have within it. Or you must utilize node.Data.Property_Taxonomy to set a new variable to only the values the switch statement wants to receive.

[computerbarry]

@cpradio

In short, if you need to use .Contains, you can’t.

I did think this might be the issue, been reading a few google posts - people reverting back to if else

@cpradio

The only possible way to approach this using a switch statement is to make sure the input to the switch only contains the data you want to check against. That means the full value of node.Data.Property_Taxonomy can only contain 0/2/2437/2446 or the other variations you have within it.

I think I understand. Sounds like this could work?

The taxonomy in discussion only has values of this sort, the format 0/2/2437/2446 will always be like this with a variation for each item.

Could you show example of how this could potentially work?
Or this will not work, best stick with if else?

Updated query above in #1 if makes any difference.

---

Also wondering below, when I was using the if else statements I tried to add a variable to reduce DRY, again, this didn’t work. What is the correct way to add/use a variable in this way?

var x = "node.Data.Property_Taxonomy.Contains";
if (@x("0/2/2437/2446"))

Thanks, Barry

[cpradio]

Your variable approach would be

var x = node.Data.Property_Taxonomy;
if (x.Contains("0/2/2437/2446"))

You must have more data than just “0/2/2437/2446” in that property because otherwise the switch statement would work. Can you output the entire property value or set a breakpoint on it in a debugger to see what the true value is?

[computerbarry]

@cpradio

You must have more data than just “0/2/2437/2446” in that property because otherwise the switch statement would work.

Correct the taxonomy is called Icons with a number of children, the icons:

Taxonomy Node Name
Node Key : 0/2/2437
Node Name : Icons
 
Taxonomy Node Name (child)
Node Key : 0/2/2437/2448
Node Name : Heart

StructuredContent (for reference)
-Icons
-- Glass
-- Heart
-- Music
-- Star

Can you output the entire property value or set a breakpoint on it in a debugger to see what the true value is?

A little tricky as I’m working in a CMS, the razor views are included files not sure how to get the values except what is show above, which is taken from the taxonomy GUI

---

Regarding the variable…

@cpradio

Your variable approach would be

I did try this in two slightly different instances both producing errors:

Error: Cannot invoke a non-delegate type

and

error CS0118: ‘x’ is a ‘variable’ but is used like a ‘method’

Thanks, Barry