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Helper III

## Draw random numbers

Hello everyone.
I have three text input boxes, where the boxes are defined as numbers. There are "min" numbers, "max" numbers and "quantity" numbers. When I press the random button, I create a table, with numbers from the text input boxes "min" and "max". Then I draw a random "quantity it is displayed in a gallery.

Then comes the question.
I want to press the random button once and the first random number should appear in a Label on the screen. Then I should be able to press the next button and the next number will appear in Label, and previous numbers will be shown in the gallery. Is this possible to achieve in a decent and simple way?
Attaches coding to the Random button. The formula is in the Norwegian setup of power apps. A comma becomes a semicolon and a semicolon becomes a double semicolon.

2 ACCEPTED SOLUTIONS

Accepted Solutions
Super User

OOOOOOOH OK Makes sense. Ok so Single number box

``Last(FirstN(Sort(numbersDraw,Random,SortOrder.Ascending), winningNumbers))``

mulitbox below it

``Concat(FirstN(Sort(numbersDraw,Random,SortOrder.Ascending), winningNumbers-1), Value, " ")``

then you can add a little to that all numbers box to show when all numbers have drawn say like

``````Switch(winningNumbers,
Value(TextInput3.Text),
Concat(FirstN(Sort(numbersDraw,Random,SortOrder.Ascending), winningNumbers), Value, " "),
Concat(FirstN(Sort(numbersDraw,Random,SortOrder.Ascending), winningNumbers-1), Value, " ")
)``````

and even set visible of the solo number box to

``````Switch(winningNumbers,
Value(TextInput3.Text), false, true)``````

adding in those last two will make it display one at a time and then move into the group as you continue until the end, at which point all numbers will show in the group box

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Super User

watched your vide, looks lovely. Reason it just goes straight to the box below is the last part we added.

``````Switch(winningNumbers,
Value(TextInput3.Text), false, true)``````

change visible of the single text box from that, to true, and it will stay there 😉

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15 REPLIES 15
Super User

Where I have 3 text inputs, set to numbers, named TextInput 1 2 3, in my buttons onselect I place

``````ClearCollect(numbersDraw,
ForAll(Sequence(Sum(TextInput2.Text+1-TextInput1.Text),TextInput1,1) As numberTurn, {Value:numberTurn.Value, Random:Rand()}))``````

In my label I place

``Concat(FirstN(Sort(numbersDraw,Random,SortOrder.Ascending), TextInput3.Text), Value, " ")``

_____________________________________________________________________________________
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Helper III

My formula works on the random button, but I want to add a new next button.

I want to press the random button once and the first random number should appear in a Label on the screen. Then I should be able to press the next button and the next number will appear in Label, and previous numbers will be shown in the gallery.

The ultimate would be that now that the last number has been drawn, a text will appear saying "No more moves"

Super User

If I understood correctly, you want to

1) Press Random once > then Next once (?) > then a text saying "No more moves"

2) Display the current value in a label, and the previous in a gallery

You can use a variable to capture the button presses.  Add something like this to the "OnSelect" for your Random and Next buttons:

``UpdateContext({varButtonPush: varButtonPush + 1})``

You can then reference this for your buttons in the DisplayMode property.  For example, for the "Random" button you can add:

``If(varButtonPush > 0, DisplayMode.Disabled)``

So you can disable your buttons as the user advances. For the "No More Moves", you can set the visible property to

``If(varButtonPush = 2,true,false)``

For the Gallery portion, you can capture the previous value into a collection, and then use that for your Gallery.   So if the current value is in your label, before you replace that with a new value, add this to the beginning of your formula:

``Collect(colPriorRandom,YourTextLabel.Text)``

You'll want to clear the collection at some point, but these are just a few ideas that may work for your use case

Super User

So, I would still make your random button different, as yours is far more complex than necessary and will make future edits harder if someone that isn't you has to work with this code one day.

To test, make a button with the onselect of

``````If(IsBlank(winningNumbers),
ClearCollect(numbersDraw,
ForAll(Sequence(Sum(TextInput2.Text+1-TextInput1.Text),TextInput1,1) As numberTurn, {Value:numberTurn.Value, Random:Rand()})));

Set(winningNumbers, If(IsBlank(winningNumbers),1, winningNumbers+1))``````

and set its displaymode to

``If(Not(winningNumbers=Value(TextInput3.Text)), DisplayMode.Edit, DisplayMode.Disabled)``

and it's text to

``If(Not(winningNumbers=Value(TextInput3.Text)), "Draw Number", "Draw Complete")``

then put a label in the screen with this text

``Concat(FirstN(Sort(numbersDraw,Random,SortOrder.Ascending), winningNumbers), Value, " ")``

this will draw one number at a time until the requested limit is reached, then chaneg your button from draw number to draw complete and make it unable to be pressed further. Can then reset it by placing this somewhere, if needed

``Set(winningNumbers,Blank())``

_____________________________________________________________________________________
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Helper III

Entered what you wrote and got this? Unable to press.

Super User

Check your display mode of the button and make.sure you changed the textbox3 reference to name of your own textbox where your draw count is located. And if it is correct then place a label somewhere and see what value is currently in winningNumbers (also check that all my formula textbox references where swapped when you put them.in your app so you dont end up with a reference throwing it off 🙂 )

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Helper III

Typo on the text box. Thanks. This works well.
What if I want to show only one feature in a new text box, and that all are collected in the one I have now.

Super User

Do you mean you want a seperate text box for each number revealed by the draw?

_____________________________________________________________________________________
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Helper III

No, not separately. A textbox. The first number appears in and the next number appears in the same text box and the first goes into the text box that is there now. If this makes sense

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