Extension methods around DataRecord (DbNull and column name support)

IDataRecord Interface

namespace : System.Data

Provides access to the column values within each row for a DataReader, and is implemented by .NET Framework data providers that access relational databases.

2 observations :

• methods take colum index as parameter. (GetInt32(Int32), GetInt64(Int32), ...)
• we must check if the specified field is set to null before retrieve value (dataRecord.IsDBNull(colIndex) ou dataRecord[columnName] == DBNull.Value)

Needs

• methods that provide access to the column value by name (GetInt32(String), GetInt64(String), ...)
• Nullable type to handle DbNull

DataRecordExtensions