Question

I have number in database, for example 733.25 which is stored as varchar in mssql.

the datareader will read it as string object “733.25”

How can i convert it to long (int64) ?

Int64.Parse returns error

(long)Convert.ToDecimal returns “73325”

Thank you

Answer 1

1. In .NET make sure to use InvariantCulture.

   decimal d = Convert.ToDecimal("733.25", CultureInfo.InvariantCulture);
   

   More Information: MSDN: Using the InvariantCulture Property

2. In T-SQL you can cast that in your query.

   SELECT cast('733.25' as float)
   

   More Information: MSDN: CAST and CONVERT (Transact-SQL)

Both will result in 733.25.

hope this helps