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Why is my vba microsoft access textbox not calculating?
VBA Textbox not calculating
Private Sub Textbox3()
Me.Textbox3 = (IIf(Me.Textbox1 = "", 0, Me.Textbox1) + 0) + (IIf(Me.Textbox2 = "", 0, Me.Textbox1) + 0)
End Sub
Private Sub Textbox3()
Me.Textbox3 = (IIf(Me.Textbox1 = "", 0, Me.Textbox1) + 0) + (IIf(Me.Textbox2 = "", 0, Me.Textbox1) + 0)
End Sub
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Actually, you don't really need any code at all.
In design view, select your textbox3 (I always rename all of my controls to something meaningful).
Display the properties dialog and on the 2nd tab, in the ControlSource box enter something like:
This should check for either NULL or an empty string in textbox1 or textbox2. I assume that you wanted to add the value from Textbox2 in the 2nd half of your equation, whereas your code above references textbox1 as the value to sum if textbox2 is empty.
Dale
In design view, select your textbox3 (I always rename all of my controls to something meaningful).
Display the properties dialog and on the 2nd tab, in the ControlSource box enter something like:
= IIf(Me.Textbox1 & "" = "", 0, Me.Textbox1) + IIf(Me.Textbox2 & "" = "", 0, Me.Textbox2)
This should check for either NULL or an empty string in textbox1 or textbox2. I assume that you wanted to add the value from Textbox2 in the 2nd half of your equation, whereas your code above references textbox1 as the value to sum if textbox2 is empty.
Dale
I want to be able to do like in excel, where cell1=1, cell2=2 , and cell3 =3. Then when you are in cell4=sum(cell1:cell3). With no buttons. I have everything written in vba.
I watched tutorials online, and I have it written same way. I don't understand why it worked from them, but doesn't work for me.
I watched tutorials online, and I have it written same way. I don't understand why it worked from them, but doesn't work for me.
Hey Joe: Sounds like a case of monkey see, monkey do. That's a hard one to troubleshoot since it means even the slightest difference anywhere could cause an issue (i.e. your use of the textbox1 value instead of the textbox2 value in your second addition factor, and the "+0" in each factor - not needed.)
Dale's formula should work as long as all values in the textbox are either Null, an empty string, or a number. If anything in textbox1 or 2 is anything else, it will throw an error. i.e. a 2 plus a space " " will cause an error.
Also, Access is NOT a spreadsheet and doesn't act/behave like one. SUM(Field1:Fieldn) is NOT something you can do in Access (although you probably already know that).
By the way, are your textboxes bound to an underlying table/query or unbound. If they are unbound, then it will add strings (i.e "1" + "2" = "12"). You'll have to change the formula to include a force change of the value to a number.
Dale's formula should work as long as all values in the textbox are either Null, an empty string, or a number. If anything in textbox1 or 2 is anything else, it will throw an error. i.e. a 2 plus a space " " will cause an error.
Also, Access is NOT a spreadsheet and doesn't act/behave like one. SUM(Field1:Fieldn) is NOT something you can do in Access (although you probably already know that).
By the way, are your textboxes bound to an underlying table/query or unbound. If they are unbound, then it will add strings (i.e "1" + "2" = "12"). You'll have to change the formula to include a force change of the value to a number.
Please describe in words what you are attempting to do in your Me.Textbox3 = (IIf(Me.Textbox1 = "", 0, Me.Textbox1) + 0) + (IIf(Me.Textbox2 = "", 0, Me.Textbox1) + 0) line.
@Martin LIss,
I think this is a better explanation, say I put "1" in textbox1 and "2" in textbox2. Then textbox3 will display "3."
I think this is a better explanation, say I put "1" in textbox1 and "2" in textbox2. Then textbox3 will display "3."
when adding things in Access, it's not like Excel. Watch out for null values! 1 + Null = Null. In fact, Null + anything equals Null in Access.
I've tested your scenario in Access. Here's what is happening:
If the textbox 1 and textbox2 are unbound, then the formula in textbox3 appends the two values together like text ("1" + "2" = "12")
if you adjust the formula to force a value to a number (i.e. Val([textbox1] & ""), then you get 1 if you enter "1" and you get 0 if the box is empty. The result is 1+0=1 and 1+2=3.
If the textbox 1 and textbox2 are unbound, then the formula in textbox3 appends the two values together like text ("1" + "2" = "12")
if you adjust the formula to force a value to a number (i.e. Val([textbox1] & ""), then you get 1 if you enter "1" and you get 0 if the box is empty. The result is 1+0=1 and 1+2=3.
The code that I posted above will work if you Call MySub. The 'Call' isn't actually necessary)]. If you want something dynamic then delete that sub and add this code. The calculation will happen when you leave either Textbox1 or 2.
Private Sub TextBox1_Exit(ByVal Cancel As MSForms.ReturnBoolean)
Me.TextBox3.Value = Val(Me.TextBox1) + Val(Me.TextBox2)
End Sub
Private Sub TextBox2_Exit(ByVal Cancel As MSForms.ReturnBoolean)
Me.TextBox3.Value = Val(Me.TextBox1) + Val(Me.TextBox2)
End Sub
To handle ALL cases, you can use the formula:
Textbox3 = Val([textbox1] & "") + Val([textbox2] & "")
Just put:
= Val([textbox1] & "") + Val([textbox2] & "")
in Textbox3's ControlSource property. You can't do that, however, if you want Textbox3 to be bound to a field in the recordsource table/query. You'll have to do the subroutine using:
Me.Textbox3 = Val(Me.textbox1 & "") + Val(Me.textbox2 & "")
Textbox3 = Val([textbox1] & "") + Val([textbox2] & "")
Just put:
= Val([textbox1] & "") + Val([textbox2] & "")
in Textbox3's ControlSource property. You can't do that, however, if you want Textbox3 to be bound to a field in the recordsource table/query. You'll have to do the subroutine using:
Me.Textbox3 = Val(Me.textbox1 & "") + Val(Me.textbox2 & "")
By the way, for you folks that don't know.... The Val() function throws an error/fails if you use it on a control and the control is empty (Null). You can append an empty string to the control inside the Val() function i.e. Val(Me.Textbox1 & "") where Val("") = 0, or use the NZ() function to replace Null with a default value. In the case of numbers:
NZ(Me.Textbox1,0)
NZ(Me.Textbox1,0)
You’re welcome and I’m glad I was able to help.
If you expand the “Full Biography” section of my profile you’ll find links to some articles I’ve written that may interest you.
Marty - Microsoft MVP 2009 to 2017
Experts Exchange Most Valuable Expert (MVE) 2015, 2017
Experts Exchange Top Expert Visual Basic Classic 2012 to 2017
Experts Exchange Top Expert VBA (current)
If you expand the “Full Biography” section of my profile you’ll find links to some articles I’ve written that may interest you.
Marty - Microsoft MVP 2009 to 2017
Experts Exchange Most Valuable Expert (MVE) 2015, 2017
Experts Exchange Top Expert Visual Basic Classic 2012 to 2017
Experts Exchange Top Expert VBA (current)
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