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What is the difference between "" and IsBlank()

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Posted on by sam10 13

Hi PowerApps community,

 

I was trying to set a value for If(DataCardValue.Text = "", true, false) where if the input text field is empty, it is a required field but it doesn't seem to work. I've tried IsBlank(DataCardValue) and the condition was executed perfectly. 

 

Can anyone share what is the difference in using DataCardValue.Text = "" vs IsBlank(DataCardValue)?

 

Thanks

 

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Building Power Apps
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  • Verified answer
    LaurensM Profile Picture
    LaurensM 12,516 Moderator on at

    Hi @sam10,

     

    Their functionality have some overlap but IsBlank() is more versatile and has my preference.

     

    DataCardValue.Text = "" looks for an empty string and only an empty string (text field). If the Default of the datacardValue / label / TextInput is "" then this will do the trick. It will not handle null or blank values (e.g. empty fields).

     

    IsBlank() will look for both blank (null) and empty text values. You can check what value a DatacardValue returns by highlighting 'DataCardValue.Text' in your formula bar:

    LaurensM_0-1678035657894.png

     

    If this solves your question, would you be so kind as to accept it as a solution.

    Thanks!

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