Previous Value of Numeric Edit Field

Hi all,

Is there a quick way to reference the previous value of an App Deigner numeric edit field? This is in order to reset the value after an error dialog has been shown. Something like

app.NumericEditField.Value = app.NumericEditField.PreviousValue

would be ideal.

Many thanks.

Answer 1

[Joseph Cheng]

I think thats almost what you'd want do have and store prevvalue during during successful calculation. Previousely in GUIDE and UIcontrol type construction there was a userdata field. I haven't been using appdesigner but it looks to be gone from a cursory inspection. However you can set a private/public property as a place to store the previous value upon successful computation run.

app.NumericEditField_N_PreviousValue= app.NumericEditField.Value 

and

app.NumericEditField.PreviousValue= app.NumericEditField_N_PreviousValue

during an error catch.

[John Smith]

Thanks, like you suggested, I stored the previous value in an app property.

Answer 2

[Ajay Kumar]

Try to save the Previous value in a temporary variable. For eg:

temp = app.NumericEditField.Value;
if error
    app.NumericEditField.Value = temp;
else
    app.NumericEditField.Value = newvalue;
end