System.InvalidCastException - SQL 到 C++ - safe_cast<float></float>

Question

I need to give my variable a value from SQL, this part of the code it's where the compiler stops, aparently it's maybe a convertion problem. In my database that column is designed as float.

float presion = safe_cast<float>(data[4]);

Here is the code, every value gets to his variable until it reaches the floats

This is my database, the value of 1.5 should go to the variable

Answer 1

I solved the issue, I'm gonna post it here anyway for other people with the same problem.

Just change, float for double:

float presion = safe_cast<float>(data[4]);

For:

float presion = safe_cast<double>(data[4]);

Answer 2

safe_cast is not a standard c++ type casting. If you change your code to:

float presion = dynamic_cast<double>(data[4]) ;

it should work.