How to solve "System.NotSupportedException: 'LINQ to Entities does not recognize the method 'Double ToDouble(System.Decimal)' method, and this method cannot be translated into a store expression.'" error in .Net?
This error occurs when you are trying to use the
ToDouble() method on a
Decimal type within a LINQ to Entities query.
ToDouble() is not a supported method in LINQ to Entities, which means it cannot be translated into a SQL query that can be executed on the database server.
To resolve this error, you can try using the
Convert.ToDouble() method instead. The
Convert class provides a range of conversion methods that can be used within LINQ to Entities queries, and are supported by LINQ to Entities.
Here's an example of how to use
Convert.ToDouble() to convert a
Decimal to a
double within a LINQ to Entities query:
csharpvar query = from item in myDbContext.MyTable where Convert.ToDouble(item.DecimalValue) > 10.0 select item;
In this example, we are using
Convert.ToDouble() to convert
item.DecimalValue to a
double so that it can be compared against
10.0. This conversion is supported by LINQ to Entities, and can be translated into a SQL query.
Convert.ToDouble() can be used to convert other types as well, including
long. Make sure to use the appropriate conversion method based on the types you are working with.
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