How to convert a TypeCode to an actual type?

Question

In the code below I get colType which is a code number for the type. But how would I convert that number into the actual type? Thx!!

for (int j = 0;         


        

Answer 1

I don't think there is any way to do this natively in the .NET Framework, as all the examples I've seen use a big switch statement to handle the conversion (for example: here).

However, if you are trying to get the type as an intermediary step towards converting an object to that type, you could always use Convert.ChangeType which accepts a TypeCode as a parameter.

double d = -1.234;
int i = (int)Convert.ChangeType(d, TypeCode.Int32);

Unfortunately, without seeing what you are trying to do I can't really say if ChangeType would be helpful or not.

EDIT:

To convert an int to a OleDbType, you can just cast it:

int i = 72; //72 is the value for OleDbType.Guid
if(Enum.IsDefined(typeof(System.Data.OleDb.OleDbType), i))
{
    System.Data.OleDb.OleDbType dbType = (System.Data.OleDb.OleDbType)i;
    Console.WriteLine(dbType);
}
else
    Console.WriteLine("{0} is not defined for System.Data.OleDb.OleDbType", i);