Why do I need both, getter and setter accessor methods

[rbjorkquist]

This is my first attempt at writing/using web services, so any and all
comments will be greatly appreciated. With that said, I am also by no
means saying this is the correct either.

I have noticed that when returning a new TPastePart, created and
filled by the web service, that if the "PastePartI D" and "PastePart"
properties do not have "set" accessor methods, their respective data
is not returned, even though the object has contains that
information. So my solution, not one I like mind you, is to put in a
blank "set" method for each.

I have to main questions. First, why does this happen; and secondly,
what's the most appropriate way of doing this?
Thanks in advance,

Randel
//
*************** *************** *************** *************** **********
public class TPastePart{
//--------------------------------------------------------------------
private int FPastePartID;
private string FPastePart;
private string FPastePartNumbe r;
private string FPastePartDescr iption;

//--------------------------------------------------------------------
public TPastePart(){
FPastePartID = 0;

FPastePart = "";
FPastePartNumbe r = "";
FPastePartDescr iption = "";
}

//--------------------------------------------------------------------
public TPastePart(int PastePartID, string PastePartNumber ,
string PastePartDescri ption, string PastePart){

FPastePartID = PastePartID;

FPastePart = PastePart;
FPastePartNumbe r = PastePartNumber ;
FPastePartDescr iption = PastePartDescri ption;
}

//--------------------------------------------------------------------
public int PastePartID{
get{return(FPas tePartID);}
set{}
}

//--------------------------------------------------------------------
public string PastePart{
get{return(FPas tePart);}
set{}
}

//--------------------------------------------------------------------
public string PastePartNumber {
get{return(FPas tePartNumber);}

set{
FPastePartNumbe r = value;
FPastePart = FPastePartNumbe r + " " + FPastePartDescr iption;
}
}

//--------------------------------------------------------------------
public string PastePartDescri ption{
get{return(FPas tePartDescripti on);}

set{
FPastePartDescr iption = value;
FPastePart = FPastePartNumbe r + " " + FPastePartDescr iption;
}
}
}

//
*************** *************** *************** *************** **********
//***** WEB SERVICE
*************** *************** *************** *******
//
*************** *************** *************** *************** **********
//----------------------------------------------------------------------
[WebMethod(Descr iption="Retriev e the information for the given paste
part ID.")]
public TPastePart PastePart_Get(i nt PastePartID){
TPastePart PastePart = null;
ConnectionStrin gSettings Cs =
ConfigurationMa nager.Connectio nStrings["ECS"];

SqlConnection SqlCon = new SqlConnection() ;
SqlCommand SqlCmd = new SqlCommand();
SqlDataReader SqlReader = null;

try{
SqlCmd.CommandT ext = "ccisp_PastePar t_Get";
SqlCmd.CommandT ype = CommandType.Sto redProcedure;
SqlCmd.Connecti on = SqlCon;
SqlCmd.Paramete rs.Add(new SqlParameter("@ RETURN_VALUE",
SqlDbType.Int,
4,

ParameterDirect ion.ReturnValue ,
true,
((System.Byte)( 10)),
((System.Byte)( 0)),
"",
DataRowVersion. Current,
null));

SqlCmd.Paramete rs.Add(new SqlParameter("@ PastePartID",
SqlDbType.Int,
4,
ParameterDirect ion.Input,
false,
((System.Byte)( 10)),
((System.Byte)( 0)),
"",
DataRowVersion. Current,
PastePartID));

SqlCon.Connecti onString = (string)Cs.Conn ectionString;
SqlCon.Open();
SqlReader = SqlCmd.ExecuteR eader();

if(SqlReader.Ha sRows){
SqlReader.Read( );

PastePart = new TPastePart(SqlR eader.GetInt32( 0), //
PastePartID
SqlReader.GetSt ring(1), //
PastePartNumber
SqlReader.GetSt ring(2), //
PastePartDescri ption
SqlReader.GetSt ring(3)); //PastePart
}//END IF-STATEMENT "if(SqlReader.H asRows)"
}//END TRY-BLOCK
catch(Exception E){
HandleWebExcept ion(E);
}//END CATCH-BLOCK
finally{
SqlCon.Close();
}//END FINALLY-BLOCK

return(PastePar t);
}

//
*************** *************** *************** *************** **********
//***** WEB SERVICE RESULTS
*************** *************** **************
//
*************** *************** *************** *************** **********

//WITH "set" ACCESSOR
METHOD********* *************** *************** *****
<TPastePart>
<PastePartID> 1</PastePartID>
<PastePart>46-141 7% Platinum Paste</PastePart>
<PastePartNumbe r>46-141</PastePartNumber >
<PastePartDescr iption>7% Platinum Paste</PastePartDescri ption>
<PasteViscosity ID>1</PasteViscosityI D>
</TPastePart>
//
*************** *************** *************** *************** **********

//WITH OUT "set" ACCESSOR METHOD
*************** *************** *********
<TPastePart>
<PastePartNumbe r>46-141</PastePartNumber >
<PastePartDescr iption>7% Platinum Paste</PastePartDescri ption>
<PasteViscosity ID>1</PasteViscosityI D>
</TPastePart>
//
*************** *************** *************** *************** **********

[rbjorkquist]

On Oct 17, 12:50 pm, rbjorkquist <rbjorkqu...@co ilcraft.comwrot e:

This is my first attempt at writing/using web services, so any and all
comments will be greatly appreciated. With that said, I am also by no
means saying this is the correct either.

I have noticed that when returning a new TPastePart, created and
filled by the web service, that if the "PastePartI D" and "PastePart"
properties do not have "set" accessor methods, their respective data
is not returned, even though the object has contains that
information. So my solution, not one I like mind you, is to put in a
blank "set" method for each.

I have to main questions. First, why does this happen; and secondly,
what's the most appropriate way of doing this?

Thanks in advance,

Randel

//
*************** *************** *************** *************** **********
public class TPastePart{
//--------------------------------------------------------------------
private int FPastePartID;
private string FPastePart;
private string FPastePartNumbe r;
private string FPastePartDescr iption;

//--------------------------------------------------------------------
public TPastePart(){
FPastePartID = 0;

FPastePart = "";
FPastePartNumbe r = "";
FPastePartDescr iption = "";
}

//--------------------------------------------------------------------
public TPastePart(int PastePartID, string PastePartNumber ,
string PastePartDescri ption, string PastePart){

FPastePartID = PastePartID;

FPastePart = PastePart;
FPastePartNumbe r = PastePartNumber ;
FPastePartDescr iption = PastePartDescri ption;
}

//--------------------------------------------------------------------
public int PastePartID{
get{return(FPas tePartID);}
set{}
}

//--------------------------------------------------------------------
public string PastePart{
get{return(FPas tePart);}
set{}
}

//--------------------------------------------------------------------
public string PastePartNumber {
get{return(FPas tePartNumber);}

set{
FPastePartNumbe r = value;
FPastePart = FPastePartNumbe r + " " + FPastePartDescr iption;
}
}

//--------------------------------------------------------------------
public string PastePartDescri ption{
get{return(FPas tePartDescripti on);}

set{
FPastePartDescr iption = value;
FPastePart = FPastePartNumbe r + " " + FPastePartDescr iption;
}
}

}

//
*************** *************** *************** *************** **********
//***** WEB SERVICE
*************** *************** *************** *******
//
*************** *************** *************** *************** **********
//----------------------------------------------------------------------
[WebMethod(Descr iption="Retriev e the information for the given paste
part ID.")]
public TPastePart PastePart_Get(i nt PastePartID){
TPastePart PastePart = null;
ConnectionStrin gSettings Cs =
ConfigurationMa nager.Connectio nStrings["ECS"];

SqlConnection SqlCon = new SqlConnection() ;
SqlCommand SqlCmd = new SqlCommand();
SqlDataReader SqlReader = null;

try{
SqlCmd.CommandT ext = "ccisp_PastePar t_Get";
SqlCmd.CommandT ype = CommandType.Sto redProcedure;
SqlCmd.Connecti on = SqlCon;
SqlCmd.Paramete rs.Add(new SqlParameter("@ RETURN_VALUE",
SqlDbType.Int,
4,

ParameterDirect ion.ReturnValue ,
true,
((System.Byte)( 10)),
((System.Byte)( 0)),
"",
DataRowVersion. Current,
null));

SqlCmd.Paramete rs.Add(new SqlParameter("@ PastePartID",
SqlDbType.Int,
4,
ParameterDirect ion.Input,
false,
((System.Byte)( 10)),
((System.Byte)( 0)),
"",
DataRowVersion. Current,
PastePartID));

SqlCon.Connecti onString = (string)Cs.Conn ectionString;
SqlCon.Open();
SqlReader = SqlCmd.ExecuteR eader();

if(SqlReader.Ha sRows){
SqlReader.Read( );

PastePart = new TPastePart(SqlR eader.GetInt32( 0), //
PastePartID
SqlReader.GetSt ring(1), //
PastePartNumber
SqlReader.GetSt ring(2), //
PastePartDescri ption
SqlReader.GetSt ring(3)); //PastePart
}//END IF-STATEMENT "if(SqlReader.H asRows)"
}//END TRY-BLOCK
catch(Exception E){
HandleWebExcept ion(E);
}//END CATCH-BLOCK
finally{
SqlCon.Close();
}//END FINALLY-BLOCK

return(PastePar t);

}

//
*************** *************** *************** *************** **********
//***** WEB SERVICE RESULTS
*************** *************** **************
//
*************** *************** *************** *************** **********

//WITH "set" ACCESSOR
METHOD********* *************** *************** *****
<TPastePart>
<PastePartID> 1</PastePartID>
<PastePart>46-141 7% Platinum Paste</PastePart>
<PastePartNumbe r>46-141</PastePartNumber >
<PastePartDescr iption>7% Platinum Paste</PastePartDescri ption>
<PasteViscosity ID>1</PasteViscosityI D>
</TPastePart>
//
*************** *************** *************** *************** **********

//WITH OUT "set" ACCESSOR METHOD
*************** *************** *********
<TPastePart>
<PastePartNumbe r>46-141</PastePartNumber >
<PastePartDescr iption>7% Platinum Paste</PastePartDescri ption>
<PasteViscosity ID>1</PasteViscosityI D>
</TPastePart>
//
*************** *************** *************** *************** **********

All,

Sorry for the double-post; it was unintentional.

[Andrew Faust]

Because the web service has to serialize your object to send it across the
wire. XML Serialization (not sure about binary) works by reading all the
public properties of your object and storing them in a simple XML format.
Then when the object reaches the other end, it needs to recreate the object
by passing these values back in to a newly created object by using the Set
method. Basically XML Serialization doesn't have access to private member
variables, it only knows about the public methods.

--
Andrew Faust
andrew[at]andrewfaust.com
http://www.andrewfaust.com
"rbjorkquis t" <rb*********@co ilcraft.comwrot e in message
news:11******** **************@ v23g2000prn.goo glegroups.com.. .

This is my first attempt at writing/using web services, so any and all
comments will be greatly appreciated. With that said, I am also by no
means saying this is the correct either.

I have noticed that when returning a new TPastePart, created and
filled by the web service, that if the "PastePartI D" and "PastePart"
properties do not have "set" accessor methods, their respective data
is not returned, even though the object has contains that
information. So my solution, not one I like mind you, is to put in a
blank "set" method for each.

I have to main questions. First, why does this happen; and secondly,
what's the most appropriate way of doing this?
Thanks in advance,

Randel
//
*************** *************** *************** *************** **********
public class TPastePart{
//--------------------------------------------------------------------
private int FPastePartID;
private string FPastePart;
private string FPastePartNumbe r;
private string FPastePartDescr iption;

//--------------------------------------------------------------------
public TPastePart(){
FPastePartID = 0;

FPastePart = "";
FPastePartNumbe r = "";
FPastePartDescr iption = "";
}

//--------------------------------------------------------------------
public TPastePart(int PastePartID, string PastePartNumber ,
string PastePartDescri ption, string PastePart){

FPastePartID = PastePartID;

FPastePart = PastePart;
FPastePartNumbe r = PastePartNumber ;
FPastePartDescr iption = PastePartDescri ption;
}

//--------------------------------------------------------------------
public int PastePartID{
get{return(FPas tePartID);}
set{}
}

//--------------------------------------------------------------------
public string PastePart{
get{return(FPas tePart);}
set{}
}

//--------------------------------------------------------------------
public string PastePartNumber {
get{return(FPas tePartNumber);}

set{
FPastePartNumbe r = value;
FPastePart = FPastePartNumbe r + " " + FPastePartDescr iption;
}
}

//--------------------------------------------------------------------
public string PastePartDescri ption{
get{return(FPas tePartDescripti on);}

set{
FPastePartDescr iption = value;
FPastePart = FPastePartNumbe r + " " + FPastePartDescr iption;
}
}
}

//
*************** *************** *************** *************** **********
//***** WEB SERVICE
*************** *************** *************** *******
//
*************** *************** *************** *************** **********
//----------------------------------------------------------------------
[WebMethod(Descr iption="Retriev e the information for the given paste
part ID.")]
public TPastePart PastePart_Get(i nt PastePartID){
TPastePart PastePart = null;
ConnectionStrin gSettings Cs =
ConfigurationMa nager.Connectio nStrings["ECS"];

SqlConnection SqlCon = new SqlConnection() ;
SqlCommand SqlCmd = new SqlCommand();
SqlDataReader SqlReader = null;

try{
SqlCmd.CommandT ext = "ccisp_PastePar t_Get";
SqlCmd.CommandT ype = CommandType.Sto redProcedure;
SqlCmd.Connecti on = SqlCon;
SqlCmd.Paramete rs.Add(new SqlParameter("@ RETURN_VALUE",
SqlDbType.Int,
4,

ParameterDirect ion.ReturnValue ,
true,
((System.Byte)( 10)),
((System.Byte)( 0)),
"",
DataRowVersion. Current,
null));

SqlCmd.Paramete rs.Add(new SqlParameter("@ PastePartID",
SqlDbType.Int,
4,
ParameterDirect ion.Input,
false,
((System.Byte)( 10)),
((System.Byte)( 0)),
"",
DataRowVersion. Current,
PastePartID));

SqlCon.Connecti onString = (string)Cs.Conn ectionString;
SqlCon.Open();
SqlReader = SqlCmd.ExecuteR eader();

if(SqlReader.Ha sRows){
SqlReader.Read( );

PastePart = new TPastePart(SqlR eader.GetInt32( 0), //
PastePartID
SqlReader.GetSt ring(1), //
PastePartNumber
SqlReader.GetSt ring(2), //
PastePartDescri ption
SqlReader.GetSt ring(3)); //PastePart
}//END IF-STATEMENT "if(SqlReader.H asRows)"
}//END TRY-BLOCK
catch(Exception E){
HandleWebExcept ion(E);
}//END CATCH-BLOCK
finally{
SqlCon.Close();
}//END FINALLY-BLOCK

return(PastePar t);
}

//
*************** *************** *************** *************** **********
//***** WEB SERVICE RESULTS
*************** *************** **************
//
*************** *************** *************** *************** **********

//WITH "set" ACCESSOR
METHOD********* *************** *************** *****
<TPastePart>
<PastePartID> 1</PastePartID>
<PastePart>46-141 7% Platinum Paste</PastePart>
<PastePartNumbe r>46-141</PastePartNumber >
<PastePartDescr iption>7% Platinum Paste</PastePartDescri ption>
<PasteViscosity ID>1</PasteViscosityI D>
</TPastePart>
//
*************** *************** *************** *************** **********

//WITH OUT "set" ACCESSOR METHOD
*************** *************** *********
<TPastePart>
<PastePartNumbe r>46-141</PastePartNumber >
<PastePartDescr iption>7% Platinum Paste</PastePartDescri ption>
<PasteViscosity ID>1</PasteViscosityI D>
</TPastePart>
//
*************** *************** *************** *************** **********