public static T GetValueOrDefault <T>(this DataRow dataRow, string name)
{
Assert.IsNotNull(dataRow, nameof(dataRow));
var value = dataRow[name];
return(ValueReader.GetValueOrDefault <T>(value));
}
public static T GetValueOrDefault <T>(this DataRow dataRow, int columnIndex)
{
Assert.IsNotNull(dataRow, nameof(dataRow));
var value = dataRow[columnIndex];
return(ValueReader.GetValueOrDefault <T>(value));
}
public static T GetValue <T>(this DataRow dataRow, string name, T outputNullValue)
{
Assert.IsNotNull(dataRow, nameof(dataRow));
var valueObject = dataRow[name];
return(ValueReader.GetValue(valueObject, outputNullValue));
}
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="command"></param>
/// <returns></returns>
public static T ExecuteScalarValueOrDefault <T>(this IDbCommand command)
{
Assert.IsNotNull(command);
var scalar = command.ExecuteScalar();
return(ValueReader.GetValueOrDefault <T>(scalar));
}
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="parameter"></param>
/// <returns></returns>
public static T GetValueOrDefault <T>(this IDataParameter parameter)
{
return(ValueReader.GetValueOrDefault <T>(parameter.Value));
}
public static T GetValueOrDefault <T>(this IDataParameter parameter) => ValueReader.GetValueOrDefault <T>(parameter.Value);