I have two text box parameter i made them Null by default. And i have one Boolean parameter. I want to make Boolean parameter disabled if the other two text box parameter are not Null.I tried this expression but don't know syntax is correct or not
=iff(Parameters!CvrgEffDt.Value = "" Or Parameters!CvrgExpDt.Value = "").disabled
Try this :
=IIF(Parameters!CvrgEffDt.Value <> NOTHING AND Parameters!CvrgExpDt.Value <> NOTHING,False,True)
It should be your default value expression of the boolean parameter
Related
ssrs filter tablix expression that will use parameter value to filter tablix
Id like to filter my tablix based on one parameter with 3 possible values to select from.
Person
Dog
Both
Then filter the tablix by field: Person, Dog, Both...
---update
Tablix Filter by parameter values. Goal include ALL
1 Parameter has 3 options (not multi select). PERSON, DOG, ALL.
I have a field built called FILTER that places "ALL" in the cells.
Otherwise its between the field CLIENT_TYPE "PERSON" or "DOG"
expression:
Fields!CLIENT_TYPE.Value
Value
Parameters!CLIENT_TYPE.Value
This works for "PERSON" and "DOG" only. Dopes Not work for "ALL"
What would be the Expression and Value to filter the tablix according to parameter...
could I trick the "ALL' into excluding nothing?
expression
IFF(Parameters!CLIENT_TYPE.Value = Fields!CLIENT_TYPE.Value or Parameters!CLIENT_TYPE.Value = Fields!FILTER.Value
, "include"
, "Exclude")
Value
=Parameters!CLIENT_TYPE.Value
RESOLUTION:
expression
=(Fields!CLIENT_TYPE.Value = Parameters!CLIENT_TYPE.Value)
OR
(Parameters!CLIENT_TYPE.Value = Fields!FILTER.Value)
value
=true
you will click on your tablix properties -> visibility and then pop and expression like so
iif(parameters_p1.value = 'Person',True,False). Keep in mind that if you have a select all option i.e. param can accept multiple values This solution WILL NOT WORK. It will only accept 1 value at a time and render result for that.
You'll want to compare your field with the parameter.
For a filter expression, you'd have something like
=IIF(Fields!YOUR_FIELD.Value = Parameters!YOUR_PARAMETER.Value OR Parameters!YOUR_PARAMETER.Value = "Both", 1, 0)
The set the type to integer and the value to 1. This will assign the value of 1 to records that your field matches the parameter or the parameter is both. This assumes that there are no other options however.
You could also map the parameter to your query and filter the query instead of using a filter on the dataset or tablix.
WHERE (YOUR_FIELD = #YOUR_PARAMETER or #YOUR_PARAMETER = 'Both')
1 Parameter (3 options): Person, Dog, All... created a field in sproc: FILTER which holds "ALL" for every cell.
expression
=(Fields!CLIENT_TYPE.Value = Parameters!CLIENT_TYPE.Value)
OR
(Parameters!CLIENT_TYPE.Value = Fields!FILTER.Value)
value
=true
I have an optional string parameter #PString and an optional integer parameter #PInt and have the it set up to allow nulls. Can someone help me with the syntax in the "where" clause to consider that parameter if populated else do not consider it. Thanks.
wouldn't it simply be
where
(isnull(#Pstring,'')='' or #Pstring = sometable.somecharcolumn)
and
(isnull(#Pint,0)=0 or #Pint = sometable.someintcolumn)
you could also do this
where
(#Pstring is null or #Pstring = sometable.somecharcolumn)
and
(#Pint is null or #Pint = sometable.someintcolumn)
In my Access query, I have the query using a VBA function to figure the value that goes in the query field.
In the form, if the stringval textbox has a value, then I want to compute it, but if not, it should remain empty (null).
Function GetValue(stringval, numval)
Dim result
stringval= stringval & ""
result= IIf(stringval<> "", numval* 1.5, Null)
GetValue = Int(result)
End Function
Now, I have a form that uses this query, and on the form is a textbox that displays the query value. I want the value to be formatted with commas in the numbers for easy reading. Everything I've tried so far does not show any commas.
I've tried:
used Standard for the Format > Formatfor the textbox (in properties)
putting #,###.### in the textbox Format value
putting #,##0.0## in the textbox Format value
changing Data > Text Format but it only gives me Plain Text and Rich Text - no option for numbers.
returning a double from the function
Note: if I don't use a custom VBA function, and write the formula directly into the query, then it does display commas. But when I move the formula into the function then the commas are lost.
What do I do?
[update]
I tried Gustav's solutions and since they didn't work for me, I added those as items to my "what I've tried" list above.
Also, if I look at the query in datasheet view, the number values sort alphabetically instead of by the size of the value. When I used the forumulae directly in the query instead of using functions, it sorted by the value of the number. I hope this is a clue.
Numbers carries no format. A format is applied when displayed only.
But be sure to return a Double if not Null:
Function GetValue(stringval, numval)
Dim result
If stringval & "" <> "" Then
result = Int(CDbl(numval) * 1.5)
Else
result = Null
End If
GetValue = result
End Function
Then apply your Format to the textbox
#,##0.0##
Or force a formatted string to be returned:
If stringval & "" <> "" Then
result = Format(Int(CDbl(numval) * 1.5), "#,##0.0##")
Else
result = Null
End If
and skip formatting of the textbox.
The solution is this: the function has to be declared as a double.
That allows the query's datasheet view to know it is displaying numbers - and so you can set the field's format to Standard for the comma to display. This also allows the form to know it has a number and it will display the comma there, too. I knew it had to do with double, but didn't realize before that the function needed to be declared as such.
Function GetValue(stringval, numval) as double '<----THIS!!!!
Dim result
If stringval & "" <> "" Then
result = numval * 1.5
Else
result = 0 `<--can't return null here; use nz function in control source for textbox
End If
GetValue = int(result) 'to remove decimals
End Function
The problem I was having was in some of my functions I need to return double or null, because I wanted textboxes to remain blank if they contained no data. Now, at least I know how to make the numbers generated by functions to display commas.
And here is how to deal with the fact that you can't return null as the value of a double. The function is originally from here.
Put this function in a module so it is public, and then in the control source for the textbox, instead of just putting the field value, put Zn(fieldvalue). This works like a charm (although using functions in the control source seems to have a delay on the form display). This way you can keep the underlying value as a double and still get commas to display in both the form and the query whilst keeping the field blank if necessary.
Public Function Zn(pvar)
' Return null if input is zero or ""
If IsNull(pvar) Then
Zn = Null
ElseIf IsNumeric(pvar) Then
If pvar = 0 Then
Zn = Null
Else
Zn = pvar
End If
Else
If Len(pvar) = 0 Then
Zn = Null
Else
Zn = pvar
End If
End If
End Function
I am trying to code an if statement where if a certain combobox is null, then it runs a certain part of code if it has data in it then it runs another. I wrote up this:
Private Sub ProjectAddSetDateAutoBtn_Click()
If ProjectAddAllDueDateAutoCmBx = Null Then
'Code1
Msgbox("ComboBox Is Null")
Else
'Code2
Msgbox("ComboBox Has Data")
End If
End Sub
I leave the combobox with no data, and then it doesn't run the code in the first part of the if or the code in the 2nd part of it either! If I enter data into the box, it runs the 2nd part of the if statement perfectly. There are no errors, I am quite stumped on this. Do ComboBoxes have their own "Null"? Is there a problem with this if statement?
Nothing is ever equal to Null, not even another Null.
Use IsNull() to check whether the combo box is Null.
'If ProjectAddAllDueDateAutoCmBx = Null Then
If IsNull(ProjectAddAllDueDateAutoCmBx) = True Then
I would suggest
If IsNull(ProjectAddAllDueDateAutoCmBx.Value) Then
It correctly checks for Null (IsNull instead of = Null), and it explicitly checks the value of the combo box.
(In most cases -- depending on the context -- just using the name of the control yields the value, but it doesn't hurt to be explicit.)
You cannot use a = Null comparison to get the results you want because Null propagates. To see this in action, try:
? Null = Null
in the Immediate Window and you'll see that Null is returned. Use the IsNull function, which will return true or false as you would expect.
Private Sub ProjectAddSetDateAutoBtn_Click()
If IsNull(ProjectAddAllDueDateAutoCmBx) Then
'Code1
Msgbox("ComboBox Is Null")
Else
'Code2
Msgbox("ComboBox Has Data")
End If
End Sub
While the accepted answer is totally correct, I use a different approach:
If HasValue(ProjectAddAllDueDateAutoCmBx) Then
where the HasValue function is:
Public Function HasValue(v As Variant) As Boolean
If Trim(v & "") <> "" Then
HasValue = True
Else
HasValue = False
End If
End Function
This has the advantage of treating NULL and "" (or any pure whitespace) values the same, which is many times what you want with MSAccess controls. For example entering a value in a null-valued textbox and removing it again with backspace will result in a ""-value, not NULL. From a user-perspective this is mostly meant to be the same.
[The (v & "")-part is just a trick to force conversion to a string.]
the equivalent of null in VB is Nothing so your check wants to be:
If ProjectAddAllDueDateAutoCmBx Is Nothing Then
....
it hope helps.
I am checking that a user makes a selection from a listbox. It appears that if no selection is made, the value passed to the server handler is "null" NOT null. Is this working as intended?
This code correctly tests for no selection in selectList listBox.
Logger.log("e.parameter.selectList"+e.parameter.selectList)
if (e.parameter.selectList === "null") {
error = true;
errortext = "no valid region selected";
Logger.log('error')
}
I expected
if (!e.parameter.selectList )... to work
Yes, this is known.
All the values in the handler are returned as string (except the dateBox value, I am not sure though). E.g checkbox value is returned "true"/"false" not true/false (a boolean value). You will have to parse these strings first to get the values in the desired form.
I usually use Utilities.jsonParse(stringValue)