问题
I'm using Report Viewer Control (rdlc) to generate reports. One of my columns have the value
=AVG(Fields!Reading.Value, "CellReading_Reading")
I'm getting the value with 10 or more decimal places. But i want to round it off to 3 decimal places. What is the expression for doing this?
Thank you. NLV
回答1:
FormatNumber(AVG(Fields!Reading.Value, "CellReading_Reading"),3)
回答2:
- Right-click the textbox
- Click the number
- Select number from the category
- Set
Decimal Placesto 0
回答3:
cdonner's answer was great and I incorporated it myself. If you have a slightly more complicated case as I did and you want to concatenate more than 1 field from more than 1 dataset you can do it like this...
=FormatNumber(Sum(Fields!Actual_Measurement.Value, "Measured_Result"), 1) & " (" & FormatNumber(First(Fields!Allowed_Min.Value, "Measured_Result_Details"), 1) & " - " & FormatNumber(First(Fields!Allowed_Max.Value, "Measured_Result_Details"), 1) & ")"
An example of what is displayed here would be ...
15.3 (12 - 16)
... If Actual_Measurement = 15.3, Allowed_Min = 12 and Allowed_Max = 16
In this case 1 entry in the "Measured_Result_Details" table relates to 1 or many entries in the "Measured_Result" table. Right clicking on the box and selecting "Expression", then looking in "Datasets" my two "Items" are "Measured_Result_Details" and "Measured_Result". This may be useful to anyone who has more than 1 dataset with fields from each dataset to be displayed in 1 Text Box!
回答4:
If you want without rounding off use Math.Truncate:
=Math.Truncate(1000*(AVG(Fields!Reading.Value, "CellReading_Reading")))/1000
Reference this and this post .
Hope helps.
回答5:
The simplest approach should be to just enter N3 in the format property of the textbox.
N stands for the number and C stands for the currency
Examples:
N0 format 123456.12 as 123,456
C2 format 1234.562 as $1,234.56
and so on ...
来源：https://stackoverflow.com/questions/2212512/report-viewer-setting-the-decimal-places-for-a-textbox-value