C#

public interface IDataSource
{		
/// <summary>		
/// Get something from somewhere.		
/// </summary>		
/// <param name="param1">A param.</param>		
/// <returns>Returns a positive value representing some value from an unknown place otherwise returns 0.</returns>		
    int GetSomething (int param1);
}
 
class DataBase : IDataSource
{
/// <summary>		
/// Get something from the database.		
/// </summary>		
/// <param name="param1">A param.</param>		
/// <returns>Returns a positive value representing some value from the database otherwise returns 0.</returns>    
    int GetSomething (int param1) ...
}
 
class WebService : IDataSource
{
/// <summary>		
/// Get something from the WebService.		
/// </summary>		
/// <param name="param1">A param.</param>		
/// <returns>Returns a positive value representing some value from the WebService otherwise returns 0.</returns>    
    int GetSomething (int param1) ...
}

kenwen wrote:

Can anyone help in as simple terms as possible please?

if(currentFd.Name.ToUpper().Equals("SHAPE") || currentFd.Name.ToUpper().Equals("FID") || currentFd.Name.ToUpper().Equals("OID"))
{
//do whatever
}

Alaric_ wrote:

== and != can't be applied to strings in that way

str = "some literal string value";

if(str == "some literal string value"){}    // is improper
if(str.Equals("some literal string value")){} //is proper

if(str == "some literal string value"){}    // is readable
if(str.Equals("some literal string value")){} //is silly