How to print all columns in a datareader

Question

Using c# how do I print all columns in a datareader.

Answer 1

This method will return an enumerable list of column names when passed a datareader:

static List<string> GetDataReaderColumnNames(IDataReader rdr)
{
    var columnNames = new List<string>();
    for (int i = 0; i < rdr.FieldCount; i++)
        columnNames.Add(rdr.GetName(i));
    return columnNames;
}

Answer 2

To add some value to the answers, I included a possible extension method to return the column names for a given DataReader.

public static IEnumerable<string> GetColumnNames(this IDataReader reader)
{
    for(int i=0; i<reader.FieldCount; i++)
        yield return reader.GetName(i);
}

Answer 3

for (int j = 0; j < x.VisibleFieldCount; j++)
            Console.WriteLine(x.GetName(j));