public class QRYExecuter: SqlDataReader
{
}
class is defined as above
while building this, i get exception below:
The type 'System.Data.SqlClient.SqlDataReader' has no constructors defined
pls, can u solve it?
asilbek 0 Newbie Poster
ddanbe 2,724 Professional Procrastinator Featured Poster
IMHO you can not derive from SqlDataReader.
The ExecuteReader method of the SqlCommand class will return a SqlDataReader.
asilbek 0 Newbie Poster
instead of SqlDataReader i put SqlCommand but i'm already getting an error:
'DBClass.QRYExecuter': cannot derive from sealed type 'System.Data.SqlClient.SqlCommand'
what's the problem
asilbek 0 Newbie Poster
IMHO you can not derive from SqlDataReader.
The ExecuteReader method of the SqlCommand class will return a SqlDataReader.
instead of SqlDataReader i put SqlCommand but i'm already getting an error:
'DBClass.QRYExecuter': cannot derive from sealed type 'System.Data.SqlClient.SqlCommand'
what's the problem
ddanbe 2,724 Professional Procrastinator Featured Poster
You cannot derive from a sealed class.
If you absolutely want to have your own QRYExecuter class, you cannot build a "is a" relationship, but you can make a "has a" relationship. Make a field of type SqlCommand in your QRYExecuter class and access it through properties.
asilbek 0 Newbie Poster
You cannot derive from a sealed class.
If you absolutely want to have your own QRYExecuter class, you cannot build a "is a" relationship, but you can make a "has a" relationship. Make a field of type SqlCommand in your QRYExecuter class and access it through properties.
thanx so much, i did this class as u offered. by using sqlcommand properties in a QRYExecuter class
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