/// <summary>
/// Returns null when value is null or an empty string.
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static string E(string value)
{
return(NullIf.Empty(value));
}
/// <summary>
/// Returns null when value is null or System.DBNull.Value.
/// </summary>
/// <param name="dbValue"></param>
/// <returns></returns>
public static object D(object dbValue)
{
return(NullIf.DBNull(dbValue));
}
/// <summary>
/// Returns null when value is null, empty string or
/// System.DBNull.Value.
/// If the value is not null nelse System.DBNull.Value nelse string an exception
/// of invalid cast is throwed.
/// </summary>
/// <param name="dbValue"></param>
/// <returns></returns>
public static string DE(object dbValue)
{
return(NullIf.DBNullOrEmpty(dbValue));
}
/// <summary>
/// Returns null when value is null, empty string, white space string or
/// System.DBNull.Value.
/// If the value is not null nelse System.DBNull.Value nelse string an exception
/// of invalid cast is throwed.
/// </summary>
/// <param name="dbValue"></param>
/// <returns></returns>
public static string DW(object dbValue)
{
return(NullIf.DBNullOrWhite(dbValue));
}
/// <summary>
/// Returns null when value is null, empty string or white space string
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static string W(string value)
{
return(NullIf.White(value));
}
