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Convert String value to Float

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Lukas
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Lukas asked on 27 Mar 2019, 03:03 PM

Hello,

in my project i need to sum values from DB column which contains string values too (column Value (type String)). I have information about type of Value (column Type).

Please is possible to write expression for conversion Value from type String to type Float and then SUM all this numeric values?

 

Simplified model:

ID    Value    Type

================

1      5,21      number

2      text 1    string

3      4,56      number

4      text 2    string

 

And i need summary: 5,21 + 4,56 = 9,77

Thanks for any idea.

Lukas

 

Telerik Report Designer v11.2.17.1025

 

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Neli
Telerik team
answered on 29 Mar 2019, 02:47 PM
Hi Lukas,

The total can be calculated through the Aggregate function Sum. However, for each value, you need to check the type and if it is a number to convert it to double. The expression might look like: 

="Total: " + Sum(CDbl(IIF(Fields.Type = 'number',Fields.Value, 0)))

The attached report demonstrates the solution. Keep in mind that a CSV data source is used where the double values are separated by a dot (instead 5,21, 5.21 is used).

Regards,
Neli
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