passing null for an integer argument

Hi,
    I thought of something similar, changing int to string in my function definition and checking if its null i return error message, if it is not null i change it to integer n use it.

Thanks,
Jain

Hi Kirtan,
               yeah i agree its a good way to escape overloading but it is not going to work in my case.

My origional method is
public DataSet getdataset(string userName, string passWord, int Id)
{

}

If i call getdataset(username,password) it returns an exception

cannot convert string to int32 type....

What i want is something like this inside my webmethod

           
           
            if (id is not passed)
            {
               
                      DataSet dsErr = new DataSet();
            DataTable errTable = dsErr.Tables.Add("Error");
            errTable.Columns.Add("ID", typeof(int));
            errTable.Columns.Add("Error", typeof(string));
               
             errTable.Rows.Add(1, "my personalised error message");
                errTable.AcceptChanges();
                return dsErr;
            }


thanks a lot
Manish

Friend,

I have came with new Optional Solution  if you dont want to create too much methods .

here check the below example i have made for you that method can take as much parameters as you want to pass :)

first check if user dont pass the parameter then lenght of array will be 0 so return the error :)

in this way single method can handle many number of parameters :) from 0 to N... :)



 

Hi Kirtan,
              Thanks for the suggestion, but is there any other way then overloading? Because if i have like 3 or 4 arguments for my method then i have to overload methods for all the combinations :(


Thanks,
Jain

Friend,

Here i m Giving your Problem's Solutions :)


if my answer helps you then please check "do you like this answer" check box :)

you can Define Two Methods With SameName one With parameter and One Without parameter ( Method Overloading )

but in WebService there is Some Modification you have to do to Achieve Method Overloading

I highligheted what you have to change .to achive method overloading in webservice.

so in First method Without Parameter Just return error Messsage to User and In Second method Perform the operation you want to do :)

thats it :)

namespace TestOverloadingWebService 
{ 
    [WebService(Namespace = "http://tempuri.org/", Description="  Function 
    overloading in Web Services ")] 
public class OverloadingInWebService : System.Web.Services.WebService 
{ 
    [WebMethod(MessageName = "AddInt", Description = "Add two integer 
        Value", EnableSession = true)] 
    public int Add(int a, int b) 
    { 
        return (a + b); 
    } 
    [WebMethod(MessageName = "AddFloat", Description = "Add two Float  
        Value", EnableSession = true)] 
    public float Add(float a, float b) 
    { 
        return (a + b); 
    } 
} 
}