Setting validation for combo box error - vba

Question

#
updated codes
Function condition(ByRef objCmb As ComboBox)
If objCmb.Value ="" And objCmb.Value = "g" Then
Call MsgBox("gg", vbOKOnly, "error")
End If
End Function
Private Sub ComboBox1_Exit(ByVal Cancel As MSForms.ReturnBoolean)
condition (ComboBox1)
End Sub
'other codes for reference:
Private Sub CommandButton1_Click()
Dim lastrow As Integer
lastrow = Cells(Rows.Count, "A").End(xlUp).Row
For i = 1 To 3
For j = 1 To 5
With Me.Controls("ComboBox" & (i - 1) * 5 + j)
If .Text <> "" Then
Cells(lastrow + i, j) = .Text
Else
Exit Sub
End If
End With
Next j
Next i
End Sub
I have 50 combo and text boxes in VBA user panel. As it is too troublesome to set constraints in every combo or text box, I want a function to apply to every combo and text box.
For the codes above , it shows up cant find objecterror
How to solve ?
Btw , how to set the function statement for textbox ?
is it Function condition2(ByRef objCmb As textbox)...

Answer 1

You are receiving an error because ComboBox is not ByRef objCmb As ComboBox. Don't use parenthesis when calling a sub. Don't use parenthesis when calling function if you are not using the functions return value. If a function does not return a value it should be a sub.
Sub condition(ByRef objCmb As MSForms.ComboBox)
If objCmb.Value <> "" And objCmb.Value = "g" Then
MsgBox "gg", vbOKOnly, "error"
objCmb.Value = ""
End If
End Sub
Private Sub ComboBox1_Exit(ByVal Cancel As MSForms.ReturnBoolean)
condition ComboBox1
End Sub
I wrote a function to help you generate the Exit event code for all your text and combo boxes.
Sub AddCodeToCipBoard(frm As UserForm)
Const BaseCode = " Private Sub #Ctrl_Exit(ByVal Cancel As MSForms.ReturnBoolean)" & vbCrLf & _
" condition ComboBox1" & vbCrLf & _
" End Sub" & vbCrLf & vbCrLf
Dim s As String
Dim ctrl
Dim clip As DataObject
Set clip = New DataObject
For Each ctrl In frm.Controls
If TypeName(ctrl) = "ComboBox" Or TypeName(ctrl) = "TextBox" Then
s = s & Replace(BaseCode, "#Ctrl", ctrl.Name)
End If
Next
clip.SetText s
clip.PutInClipboard
End Sub
Put this code in a module and call it like this:
AddCodeToCipBoard Userform1
Now all the Exit event code will be copied into the Windows Clipboard. Go into your Userforms code module and paste the new code.
Example Output:
Private Sub TextBox1_Exit(ByVal Cancel As MSForms.ReturnBoolean)
condition ComboBox1
End Sub
Private Sub TextBox2_Exit(ByVal Cancel As MSForms.ReturnBoolean)
condition ComboBox1
End Sub
Private Sub TextBox3_Exit(ByVal Cancel As MSForms.ReturnBoolean)
condition ComboBox1
End Sub
Private Sub ComboBox1_Exit(ByVal Cancel As MSForms.ReturnBoolean)
condition ComboBox1
End Sub
Private Sub TextBox4_Exit(ByVal Cancel As MSForms.ReturnBoolean)
condition ComboBox1
End Sub