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Update Data Card text field on select of button

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Posted on by Community Power Pla... Microsoft Employee

@RandyHayes Hey Randy, Any idea on this one -

Hello:

I have a form with text input fields "Latitude" & "Longitude". I am trying to have the user select a button that will populate these fields with their current lactation, Lat & Long.

Currently I have the default value of each field set to Location.Latitude & Location.Longitude which works, but I don't want it to populate these fields by default until the user clicks a button which will then update the DataCard text in the form fields.

Thanks in advance for your help!

Delucasmith -

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Building Power Apps

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BCBuizer 22,563 Super User 2026 Season 1 on at

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Hi @Anonymous ,

You then may want to use variables: varLat, varLong

These can then be set as the default values for the datacards.

By default, when starting the app, these will be blank. Pushing a button with the below code for the OnSelect property will give them the current values:

Set(varLat,Location.Latitude); Set(varLong, Location.Longitude);

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RandyHayes 76,299 Super User 2024 Season 1 on at

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@Anonymous

Yes, since you already have the lat and log shown in your text input control in your form, then simply set the Reset property of your text input control to: yourSubmitButtonName.Pressed

This will reset the coordinates when they press the submit button.

I hope this is helpful for you.

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Community Power Pla... Microsoft Employee on at

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Thanks! This works however, what can I do if there are already coordinates in the spl column which should remain by default? So if coordinates (lat & Long) already exist in the SPL, then those will be displayed, and if user selects the button it will update.

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BCBuizer 22,563 Super User 2026 Season 1 on at

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Hi @Anonymous ,

In that case you can use the Coalesce function in the Default property of the DataCardValue control to first check if there's a value in the data source before using the value in the variable. For example:

Coalesce(Parent.Default, varLong)

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Community Power Pla... Microsoft Employee on at

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Thanks guys. these are helpful, but a need one more step. When user selects dropdown and changes value to "Shipped", i need the Lat & Long data deleted on form submission. Essentially, once the item is shipped, the Lat & Long data is no longer needed.

Something like this I would imagine? -

If(DataCardValue22_2.Selected.Value = "Shipped", ...

Then I would like to delete the data in the Lat & Long fields in the SPL.

Also, this formula below works, but when I select the button when there is data already in the SPL, it sets it to the default data - how can i get it to reset to current location and change the data on form submit?
Coalesce(Parent.Default, varLong)

Thanks again!

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BCBuizer 22,563 Super User 2026 Season 1 on at

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Hi @Anonymous ,

You can apply the same logic to the default property:

If( DataCardValue22_2.Selected.Value = "Shipped", "", Coalesce(Parent.Default, varLong) )

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