DataTableReader.Read Method

Definition

Namespace:

System.Data

Assemblies:

netstandard.dll, System.Data.Common.dll

Source:

DataTableReader.cs

Advances the DataTableReader to the next record.

C#

public override bool Read();

Returns

Boolean

true if there was another row to read; otherwise false.

Exceptions

InvalidOperationException

An attempt was made to read or access a column in a closed DataTableReader .

Examples

The PrintColumns procedure loops through all the rows in the DataTableReader, displaying the contents of each column in the Console window.

C#

private static void PrintColumns(DataTableReader reader)
{
    // Loop through all the rows in the DataTableReader
    while (reader.Read())
    {
        for (int i = 0; i < reader.FieldCount; i++)
        {
            Console.Write("{0} ", reader[i]);
        }
        Console.WriteLine();
    }
}

Remarks

The default position of the DataTableReader is before the first record. Therefore, you must call Read to start accessing any data.

Applies to