I'm trying to use the row visibility function in Report Builder 3.0 by using the expression below:
=IIF(IsNothing(Lookup(Fields!Activity.Value,Fields!Activity.Value,Fields!Pred_Activity.Value,"ds_Pred"),True,False)
When I run the report, I get an error message Too many arguments to Public Function isNothing.
Is it possible to use the IsNothing function along with the Lookup function?
Your parenthesis don't line up there for starters, if I'm reading your code correctly, what it should say is: =IIF(IsNothing(Lookup(Fields!Activity.Value,Fields!Activity.Value,Fields!Pred_Activity.Value,"ds_Pred")),True,False)
I just figured it out. The formula was missing the last parenthesis. It should have been:
=IIF(IsNothing(Lookup(Fields!Activity.Value,Fields!Activity.Value,Fields!Pred_Activity.Value,"ds_Pred")),True,False)
Related
I can't understand the structure of the written code
(CountRows("client_code").Equals(Parameters!client_code.Count)
can anyone explain this please?
And where can I find a reference for all the functions that I can use to write Expression in SSRS??
In SSRS we use "=" operator for comparison rather than equals.
Expression mentioned by you below
(CountRows("client_code").Equals(Parameters!client_code.Count)
Rather it should be like
=IIF(CountRows("client_code")=Parameters!client_code.Count,true,false)
What your mentioned code does: It Returns a count of rows within the specified scope, Scope can be Group as well. and it compared with your Report Parameter count.
Here you will find complete list of functions and expression for SSRS.
I am trying to make a query. I don't type anything. I use only every formula by clicking in built-in function of access, but I get this popup error
The function iif requires the condition, iftrue, and iffalse to be separated with a comma, not a colon. Makr it look like this:
Iif(condition, ifTrue, ifFalse)
I am trying to write an expression in SSRS which counts only specific data using IIF. I found the following solution:
=Sum(IIF(Fields!Program.Value = "FC", Fields!QuantityToShip.Value, 0))
The code above works but only when there is ONE dataset, while I have several.
Here is the code I wrote:
=Count(IIF(Fields!Mgroup.Value,"DataSet1"=303,1,0))
I get the aggregation error:
Textbox refers directly to the field ‘Mgroup’ without specifying a dataset aggregate
I added a sum:
=Count(IIF(Sum(Fields!Mgroup.Value,"DataSet1")=303,1,0))
Still getting the same error.
Why is that?
What can I put instead of Sum? All I need is to count how many groups named 303 I have.
The expression you used has some sintax errors. The Count function only aggregate from the scoped Dataset.
Try this:
=LookupSet(303,Fields!Mgroup.Value,Fields!Mgroup.Value,"DataSet1").Length
Let me know if this helps you.
I am facing very simple issue but not getting solution over it.
I have textbox in my ssrs report, I am passing value "1;prashant" or null to it. Now, if I pass value "1;prashant" to textbox then textbox should show only "prashant" and If I am passing nothing then it should be blank.
I have tried following IIF condition:
=IIF(IsNothing(FieldS!WIAPPORVER.Value),"",Split(Fields!WIAPPORVER.Value,"#")(1).ToString())
But, I above code is giving an error ["#error" shows in textbox] if I am passing blank value.
Please let me know, where I am wrong in this.
Thanks
There are probably better ways of doing this, but this is what my head came up with at the time:
=IIF(
IsNothing(Fields!WIAPPROVER.Value)
,""
,Right(Fields!WIAPPROVER.Value,Len(Fields!WIAPPROVER.Value) -InStr(Fields!WIAPPROVER.Value,";"))
)
I believe SSRS is trying to compute everything in the report at runtime, so in your case it is still trying to fetch index 1 from an array even though there is nothing in it and it crashes.
Edit: Changed parameters to Fields. I created a parameter to remake the issue at my side.
Just get the split out of the iif. Then in your iif, if field is nothing create a string that when split will return ""
=Split(IIF(IsNothing(FieldS!WIAPPORVER.Value),"#", Fields!WIAPPORVER.Value),"#")(1)
You are relying on the IIf expression short circuiting, but SSRS IIf expressions do not short circuit - the expression will try and work out Split(Fields!WIAPPORVER.Value,"#")(1).ToString() for all rows and fail when this value doesn't exist.
You can get this going by using text expressions, which don't get this error.
With test data:
And a simple table:
I have added columns with both your existing expression and a new expression:
=Right(Fields!WIAPPORVER.Value, Len(Fields!WIAPPORVER.Value) - InStr(Fields!WIAPPORVER.Value, "#"))
This new expression works for NULL values, empty strings and strings with no delimiter present:
I need to write an SSRS expression to check and replace NULL field value with another field value. Can this be done?
=iif(isNothing(Fields!FV1.Value), Fields!FV2.Value, Fields!FV1.Value)
If you have to do it a bunch of times, you can also make a reusable function to avoid a lot of typing. Here's a solution modeled off of SQL's ISNULL function:
Right click on the Report Document and go to Report Properties.
Navigate to the Code tab and add the following function:
Public Function IsNull(input As Object, defaultValue As Object) As Object
Return IIf(input Is Nothing, defaultValue, input)
End Function
Note - Even though the custom code is expecting valid VB.NET code, you have to use the IIF Ternary operator.
Then you can use it in an expression like this:
=Code.IsNull(Fields!MyField.Value,0)