concatinating selected items from multiple combobox

[VivekJaganath]

Hi Guys,

I have 5 comboboxes.

each combobox is set to select multiple items. now to concat selected items from individual combox items i am using below formula in a label.

Left( Concat(ComboBox4_19.SelectedItems, Value & "," ), Len( Concat( ComboBox4_19.SelectedItems, Value& "," ) )-1)

once this done i am using concatenate to bring together strings from all the labels to get a single line of string. below is the formul i am using

Concatenate(Label53_7.Text,",",Label53_6.Text,",",Label53_5.Text,",",Label53_4.Text,",",Label53_3.Text,",",Label53_2.Text,",",Label53_1.Text,",",Label53.Text)

But the problem is it is not mandatory for users to select from all the comboboxes and typically they might select from 2 or 3, in such cases the concatenated sting looks as below.

"Xyz,,,,abc"

i want to get rid of additional commas. any solution for this?

[mdevaney]

@VivekJaganath 

You can achieve your goal without the CONCATENATE function by using this code in the Text  property of your label.

If(!IsBlank(Label53_7),Label53_7.Text,",")&
If(!IsBlank(Label53_6),Label53_6.Text,",")&
If(!IsBlank(Label53_5),Label53_5.Text,",")&
If(!IsBlank(Label53_4),Label53_4.Text,",")&
If(!IsBlank(Label53_3),Label53_3.Text,",")&
If(!IsBlank(Label53_2),Label53_2.Text,",")&
If(!IsBlank(Label53_1),Label53_1.Text,",")&
If(!IsBlank(Label53),Label53.Text,",")

If you must get rid of the trailing comma at the end of the last value then you'll need this code instead.

Left(
  If(!IsBlank(Label53_7),Label53_7.Text,",")&
  If(!IsBlank(Label53_6),Label53_6.Text,",")&
  If(!IsBlank(Label53_5),Label53_5.Text,",")&
  If(!IsBlank(Label53_4),Label53_4.Text,",")&
  If(!IsBlank(Label53_3),Label53_3.Text,",")&
  If(!IsBlank(Label53_2),Label53_2.Text,",")&
  If(!IsBlank(Label53_1),Label53_1.Text,",")&
  If(!IsBlank(Label53),Label53.Text,","),
  Len(
    If(!IsBlank(Label53_7),Label53_7.Text,",")&
    If(!IsBlank(Label53_6),Label53_6.Text,",")&
    If(!IsBlank(Label53_5),Label53_5.Text,",")&
    If(!IsBlank(Label53_4),Label53_4.Text,",")&
    If(!IsBlank(Label53_3),Label53_3.Text,",")&
    If(!IsBlank(Label53_2),Label53_2.Text,",")&
    If(!IsBlank(Label53_1),Label53_1.Text,",")&
    If(!IsBlank(Label53),Label53.Text,",")
  )-1
)

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[EricLott]

I got a similar answer to @mdevaney. It's ugly, so I'm glad me and him got similar results!

Replace(Concatenate
(
If(IsBlank(Label53_7.Text),"",Label53_7.Text & ","),
If(IsBlank(Label53_6.Text),"",Label53_6.Text & ","),
If(IsBlank(Label53_5.Text),"",Label53_5.Text & ","),
If(IsBlank(Label53_4.Text),"",Label53_4.Text & ","),
If(IsBlank(Label53_3.Text),"",Label53_3.Text & ","),
If(IsBlank(Label53_2.Text),"",Label53_2.Text & ","),
If(IsBlank(Label53_1.Text),"",Label53_1.Text & ","),
If(IsBlank(Label53.Text),"",Label53.Text & ",")
),
Len(Concatenate(
If(IsBlank(Label53_7.Text),"",Label53_7.Text & ","),
If(IsBlank(Label53_6.Text),"",Label53_6.Text & ","),
If(IsBlank(Label53_5.Text),"",Label53_5.Text & ","),
If(IsBlank(Label53_4.Text),"",Label53_4.Text & ","),
If(IsBlank(Label53_3.Text),"",Label53_3.Text & ","),
If(IsBlank(Label53_2.Text),"",Label53_2.Text & ","),
If(IsBlank(Label53_1.Text),"",Label53_1.Text & ","),
If(IsBlank(Label53.Text),"",Label53.Text & ",")
))
,1
,"")

[mdevaney · Accepted solution]

@EricLott 

Well you know @VivekJaganath didn't say he needed the solution to be pretty... LOL 🤣

[VivekJaganath]

Thanks much guys... was very helpful

[EricLott]

I spent some time looking into making this a little less ugly and easier to maintain and came across the With() function, which I was not familiar with. I shortened the formula to the one below using your neater version of the join. Figured I'd pass the info along in case you weren't familiar with it either.

With({joinedString:
If(!IsBlank(Label53_7),Label53_7.Text&",")&
If(!IsBlank(Label53_6),Label53_6.Text&",")&
If(!IsBlank(Label53_5),Label53_5.Text&",")&
If(!IsBlank(Label53_4),Label53_4.Text&",")&
If(!IsBlank(Label53_3),Label53_3.Text&",")&
If(!IsBlank(Label53_2),Label53_2.Text&",")&
If(!IsBlank(Label53_1),Label53_1.Text&",")&
If(!IsBlank(Label53),Label53.Text,",")},
Left(joinedString,Len(joinedString)-1))

 Here's the doc:

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/functions/function-with