Runtime Error 424 Object Required in Vb6 - vb6

I am new to Vb,
i am getting error in my source code,
here is my code snippet,
Dim a,b as integer
a=val (txtf.Text)
b=val (txts.Text)
if(a>b)then
txtr=a
else
txtr=b
end if
end sub
ERROR: Runtime Error 424 Object Required:
any help will be appriciated.

It is safer to type
Dim a as Integer
Dim b as integer
or
Dim a as integer,b as integer
This might be the case of the error

You haven't defined textr . Do that and your prob will be solved.

You did not specify txtr as txtr.txt instead it read txtr as an object...

Error that I found You should separate a,b; instead write is as:
Dim a as integer,b as integer or
Dim a as integer
Dim b as integer

Related

why when pass arguments on a sub vb6 i retrieve error?

i wrote this code:
Sub Insert_Pic_From_File2(PicPath As String, ByVal row As Integer, ByVal col As Integer)
Dim Pic As Picture, Sh As Shape, Rng As Range
Set Rng = Range.Cells(row, col)
Set Rng = Rng.MergeArea
With Rng
Set Sh = ActiveSheet.Shapes.AddPicture(Filename:=PicPath, linkToFile:=msoFalse, SaveWithDocument:=msoTrue, Left:=.Left, Top:=.Top, Width:=.Width, Height:=.Height)
Sh.LockAspectRatio = msoFalse
End With
Set Sh = Nothing
Set Rng = Nothing
End Sub
and I call it from this line:
Insert_Pic_From_File2 ("D:\Area Open\ok.png", y, col_result)
both y and col_result are integer.
When I press enter the program give this error (in italian)
errore di compilazione:
Previsto: =
i think in english:
compilation error:
needed: =
Why this?
if i delete the arguments y and col_result seems no problem, but without arguments.
Thanks so much.
Don't use brackets round the parameters! They're only used if you use the redundant 'Call' statement or for Functions where a value is returned.
Insert_Pic_From_File2 "D:\Area Open\ok.png", y, col_result
should be fine

Error 91 while declaring connection string vb6 ADODC

What I am doing wrong?
Public Function getRecords(query As String) As Adodc
With Adodc1
.RecordSource = query
.Refresh
End With
getRecords = Adodc1
End Function
Getting an error in line getRecords = Adodc1 where it shows nothing or Error 91.
The Code is written in a form consisting Adodc1 Control for ADODC object.
Got Solution by Rob :
set getRecords = Adodc1

How to remove Error: Value of Type "UniSimdesign.realvariable" cannot be converted to "Double"

Dim usdInFlow2 As UniSimDesign.ProcessStream
Dim InF1 As Double
Dim InF2 As Double
Dim OutF As Double
InF1 = 1.1
InF2 = usdInFlow2.MolarFlow
In above code, the last statement gives error that :
Value of Type "UniSimdesign.realvariable" cannot be converted to "Double".
Can some one answer how to get rid of this error?
Note that UniSimdesign is referenced type library and this code was working fine in VB 2006.
MolarFlow is an Object type that cannot be cast to a Double. Try Using
InF2 = usdInFlow2.MolarFlowValue.
which I believe is defined as a Double.

Advise on this . My code has some blocker.i am getting the error 'object required'

I am using the functions below.In the first one i have parsed the node of xml and its value using MSXML. similar func fr other xml.i want to use two nodevalues and highlight it.i tried something.but i am getting error in the line highlighted(**) as 'Object Required'.your quick reply will help me more.
Public Sub DisplayNode1(ByRef Nodes1 As MSXML2.IXMLDOMNodeList, _
ByVal Indent1 As Integer)
some lines
RichTextBox2.Text = Space$(Indent) & xNode1.ParentNode.nodeName & _
":" & xNode1.NodeValue
difference
some lines
Public Sub difference()
Dim a As IXMLDOMText
Dim b As IXMLDOMText
a.NodeValue = xNode.innertext 'i get erroe in line
b.NodeValue = xNode1.innertext
If StrComp(a, b) > 0 Then
a = vbRed
b = vbRed
End If
please help me soon.
There is a lot that is potentially wrong with this.
xnode isn't declared anywhere in your code sample
Neither a, b, or xnode are explicitly set anywhere in your code sample
Unless xnode is a form/module/global level variable then it will be out of scope in the Difference procedure
It's not shown but I'm guessing that you don't have Option Explicit set in your code or by default
You'll need to address these points first before you can get anywhere with this code.

VB6 Can IsNumeric be wrong?

Is it possible to test a string with IsNumeric() and for it to return true, but when you cast that same string to an integer using CInt() and assign it to a variable of type integer that it will give a type mismatch error?
I ask because I was getting a type mismatch error, so I used IsNumeric() to check the string was numeric before trying to cast it, but I still get the error.
I am tearing my hair out with this.
Here is the code in question.
iGlobalMaxAlternatives = CInt(strMaxAlternatives) is where the error is occuring.
Dim strMaxAlternatives As String
Dim iGlobalMaxAlternatives As Integer
iGlobalMaxAlternatives = 0
bSurchargeIncInFare = True
strMaxAlternatives = ReadStringKeyFromRegistry("Software\TL\Connection Strings\" & sConn & "\HH", "MaxAlt")
If IsNumeric(strMaxAlternatives) And strMaxAlternatives <> "" Then
iGlobalMaxAlternatives = CInt(strMaxAlternatives)
End If
You may have an overflow due the maximum integer size; the currency type actually does very well for large numbers (but beware of any regional issues). See edits below for Int64 discussion.
According to MSDN documentation on IsNumeric:
IsNumeric returns True if the data
type of Expression is Boolean, Byte,
Decimal, Double, Integer, Long,
SByte, Short, Single, UInteger,
ULong, or UShort, or an Object that
contains one of those numeric types.
It also returns True if Expression is
a Char or String that can be
successfully converted to a number.
IsNumeric returns False if Expression
is of data type Date or of data type
Object and it does not contain a
numeric type. IsNumeric returns False
if Expression is a Char or String
that cannot be converted to a number.
Since you are getting a Type Mismatch, perhaps a Double is interfering with the conversion. The IsNumeric does not guarantee it is an Integer, just that it matches one of the numeric possibilities. If the number is a double, perhaps regional settings (comma versus period and so on) are causing the exception.
You might try converting it to a double and then to an integer.
' Using a couple of steps
Dim iValue As Integer
Dim dValue As Double
dValue = CDbl(SourceValue)
iValue = CInt(iValue)
' Or in one step (might make debugging harder)
iValue = CInt(CDbl(SourceValue))
EDIT: After your clarification, it appears you are getting an overflow conversion. First try using a Long and CLng() instead of CInt(). There is still a chance the entry is Int64 though, which is more difficult using VB6.
I have used the following code for the LARGE_INTEGER and Integer8 types (both Int64), but it may not work for your situation:
testValue = CCur((inputValue.HighPart * 2 ^ 32) + _
inputValue.LowPart) / CCur(-864000000000)
This example was from an LDAP password expiration example, but like I said it may or may not work in your scenario. If you don't have the LARGE_INTEGER type, it looks like:
Private Type LARGE_INTEGER
LowPart As Long
HighPart As Long
End Type
Search for LARGE_INTEGER and VB6 for more information.
EDIT: For debugging, it may be useful to temporarily avoid error handling and then turn it back on after passing the troubling lines:
If IsNumeric(strMaxAlternatives) And strMaxAlternatives <> "" Then
On Error Resume Next
iGlobalMaxAlternatives = CInt(strMaxAlternatives)
If Err.Number <> 0 Then
Debug.Print "Conversion Error: " & strMaxAlternatives & _
" - " & Err.Description
EndIf
On Error Goto YourPreviousErrorHandler
End If
Yes, "3.41" would be numeric but not an integer.
VB6 doesn't provide good methods to guarantee CInt won't fail. I've found the simplest way is to just use error-handling.
function TryParse(byval text as string, byref value as integer) as boolean
on error resume next
value = CInt(text)
TryParse = (err.number = 0)
endfunction
Of course your error-handling preferences may vary.
Yes. Try this:
If IsNumeric("65537") Then
Dim i As Integer
i = CInt("65537") 'throws an error on this line!
End If
This one's an overflow, but I think it illustrates the unreliability of IsNumeric() in general (especially for ints - for doubles it's much more reliable).
According to the VB6 documentation, "IsNumeric returns True if the data type of Expression is Boolean, Byte, Decimal, Double, Integer, Long, SByte, Short, Single, UInteger, ULong, or UShort, or an Object that contains one of those numeric types. It also returns True if Expression is a Char or String that can be successfully converted to a number."
Many of those cannot be converted to an Integer. For example "1.5" is numeric but it's not an integer. So, you can convert it to a number, but not necessarily an integer.
The following code works without a Type Mismatch error in Visual BASIC 6
Dim I As Integer
I = CInt("3.41")
The same for this variant
Dim I As Integer
Dim TempS As String
TempS = "3.41"
I = CInt(TempS)
Posting the code in question would help answer your question. Basically there are several function in VB6 that are used to convert strings into number.
CInt and Int convert into number but handle rounding different. Direct assignment works and equivalent to using CInt. Howver I recommend continuing to use CInt to make the operation clear to you and your fellow developers in the future.
CInt works on number with commas like "3,041.41" However VB6 has problem handling region settings so if you are using notation other than standard American English you will get strange results and errors.
Your best bet is to start logging the errors with the actual values it's working with so you can figure out whats going on.
IsNumeric will return true if it can convert the string to a number. Even if there are non-numeric characters in the string. I always loop though the string one character at a time and test each character. If one character fails then I can return an error.
Just found this nugget. If you run the following, script #1 returns TRUE but script #2 & #3 will fail:
SELECT ISNUMERIC('98,0') AS isNum -- Fails
SELECT CONVERT(INT, '98,0') -- Fails
SELECT CONVERT(NUMERIC(11,4), '98,0') -- Fails
Two options...
Change
If IsNumeric(strMaxAlternatives) And strMaxAlternatives <> "" Then
iGlobalMaxAlternatives = CInt(strMaxAlternatives)
End If
To
If IsNumeric(strMaxAlternatives) And strMaxAlternatives <> "" Then
iGlobalMaxAlternatives = CDbl(strMaxAlternatives) ' Cast to double instead'
End If
Or
If IsNumeric(strMaxAlternatives) And strMaxAlternatives <> "" Then
If CDbl(strMaxAlternatives) Mod 1 = 0 Then ' Make sure there\'s no decimal points'
iGlobalMaxAlternatives = CInt(strMaxAlternatives)
End If
End If

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