how to handle optional parameters using DAAB ? plz guide - C# Discussion Boards

Re: how to handle optional parameters using DAAB ? plz guide

13-Feb-10 12:55

Hi,

I am using DAAB with stored procedures. I stored procedure is called from multiple functions.

Please guide how I can handle optional parameters with DAAB ? a stored procedure has 2 parameter and values are being passed by functiona1. In function2 I needed to declare 3rd parameter in same stored procedure. I set its default value (so that I may have not to pass it from function1) but even than functions1 stop working and show error message that no of parameters are not same.

I am just selecting data in stored procedure and I have not coded any set statement (like set ansi on or set norowcount) in it.

Please guide me.

thanks

Not Active13-Feb-10 14:13

Re: how to handle optional parameters using DAAB ? plz guide

13-Feb-10 14:13

If you do something like this in method1

<br />
SqlCommand.Parameters.Add( [param1] )<br />
SqlCommand.Parameters.Add( [param2] )<br />
SqlCommand.Execute...<br />

Then this in method2

<br />
SqlCommand.Parameters.Add( [param1] )<br />
SqlCommand.Parameters.Add( [param2] )<br />
SqlCommand.Parameters.Add( [param3] )<br />
SqlCommand.Execute...<br />

as long as SqlCommand is the same object in both methods, then of course calling method1 after method2 will produce this exception, because you do have too many parameters.

I know the language. I've read a book. - _Madmatt

YawerIqbal13-Feb-10 18:48

Re: how to handle optional parameters using DAAB ? plz guide

13-Feb-10 18:48

Thanks for your kind attention.

I am not using command object. Rather I am passing parameters in directly in database object. e.g.

public int UpdateInvestmentObjectivesNExperience(CorporateAccount obj)
{
int result;

object objResult = db.ExecuteNonQuery("p_corporateaccount_InvestmentObjectivesNExperience", 2, obj .Id,
obj.SpecuativeGains, obj.HedgeAgainstInvestment, obj.InvestmentObjective,
obj.UndarstandNatureOfTCD, obj.UnderstandRiskOfTCD, obj.HaveExperienceOfTCD,
obj.NoOfMonthsExp, obj.TypesOfProductsDealtIn, obj.BrokersUsed, obj.WasAdviceReq,
obj.AvgTransationSize, obj.AvgNoOfTradesPerWeek);
result = Int32.Parse(objResult.ToString());
return result;
}

If I add a new parameter in stored procedure and set its default value by null or 1, than not only I will have to supply value for it in next functions where I am using it rather I will have to supply value for it in this method as well. (for the parameter that is last in stored procedure and has default value.)

Please guide.

thanks gain

Not Active14-Feb-10 3:09

Re: how to handle optional parameters using DAAB ? plz guide

14-Feb-10 3:09

If I understand what you are trying to accomplish then try this.

public int Foo(param1, param2)
{
  return Bar(param1, param2, null);
}

public int Bar(param1, param2, param3)
{
   return db.Execut(...);
}

I know the language. I've read a book. - _Madmatt

YawerIqbal14-Feb-10 19:00

Re: how to handle optional parameters using DAAB ? plz guide [modified]

14-Feb-10 19:00

Thanks a lot for your kind attention and sharing.

I m exectly doing this now but I here is problem what I asked. On declaring a new parameter I will have to pass value for it in all above functions where even it is not being used.

I was surprised can there be some why I may have not change the code again and again.

thanks

Not Active15-Feb-10 1:27

Re: how to handle optional parameters using DAAB ? plz guide

15-Feb-10 1:27

You want to be able to write one method and never change it again even when you change the stored procedure?

public SqlCommand CreateProc(string procName, ReadOnlyCollection<DbParameter> parameters)
{
SqlCommand cmd = new SqlCommand(procName, SqlConnection);
cmd.CommandType = CommandType.StoredProcedure;

if(parameters != null)
{
    foreach(DbParameter param in parameters)
    {
        cmd.Parameters.Add(param);
    }
}

return cmd;
}

I know the language. I've read a book. - _Madmatt

modified on Monday, February 15, 2010 11:40 AM

YawerIqbal15-Feb-10 4:57

Re: how to handle optional parameters using DAAB ? plz guide

15-Feb-10 4:57

Thanks for it.

Can you please explain a little more how it will helpful ? how I can use it ?

thanks

Not Active15-Feb-10 5:44

how to make a default value in combobox where item doesn't exist in collection

15-Feb-10 5:44

I thought it was pretty self-explanatory. What don't you understand?

I know the language. I've read a book. - _Madmatt

tonyonlinux13-Feb-10 10:10

tonyonlinux

13-Feb-10 10:10

I have a combobox that I fill during the form load. That works fine. The question I have is how do I make it say "Select An Item to autofill" or whatever? I understand I could use selectedindex or something like that but the actually text i wish to display by default is not in the list.
thanks wasn't sure what to search for on this Frown | :(

Re: how to make a default value in combobox where item doesn't exist in collection

Abhinav S13-Feb-10 10:16

Abhinav S

13-Feb-10 10:16

I would just add it to the combo data list and then set it to be the selected value. Nothing fancy.
Cool | :cool:

Me, I'm dishonest. And a dishonest man you can always trust to be dishonest.
Honestly. It's the honest ones you want to watch out for...

Re: how to make a default value in combobox where item doesn't exist in collection [resolved]

tonyonlinux13-Feb-10 10:32

tonyonlinux

13-Feb-10 10:32

YEAH makes since to do it that way i guess, but the keywords are tied into each row on the database thats the only problem I have.

modified on Sunday, February 14, 2010 3:46 AM

Send Multicast cumtom packets

churchil_ucv13-Feb-10 7:30

churchil_ucv

13-Feb-10 7:30

Hi, im just trying to send OSPF packets to a multicast IP address (224.0.0.5) but, usign raw sockets, windows 7 doesnt allow this type of sockets and using sharpcap i dont find the way to do that (send packets to a multicast ip address).

Please anyone who can help me ???

Im using C#......

Destroy class

Scalee13-Feb-10 4:57

Scalee

13-Feb-10 4:57

When the connection between server and client break an event is raised,
I catch the event and null the client object but the client keeps on raising the event while it should be destroyed.

Saksida Bojan13-Feb-10 5:12

Saksida Bojan

13-Feb-10 5:12

You did not post witch event so I am only guesing.

Maybe your event has e.Handled property. If so try setting it to true.

Scalee13-Feb-10 5:34

Scalee

13-Feb-10 5:34

it's a custom event:

//client.cs

        public delegate void kill(string msg);

        public event kill Kill; 

        if (!clientSocket.Connected)
        {
             Kill("Server connection broken");
             return;
        }

//main.cs
        Client clnt = null;

        private void ms_Startclient_Click(object sender, EventArgs e)
        {
            if (ms_Startclient.Checked)
            {
                clnt = new Client();
                clnt.Kill += new Client.kill(clnt_Kill);
            }
            else
            {
                clnt = null;
            }
        }

        void clnt_Kill(string msg)
        {
            clnt = null;
            MessageBox.Show(msg);
            ms_Startclient.Checked = false;
        }

Saksida Bojan13-Feb-10 5:51

Saksida Bojan

13-Feb-10 5:51

the only thing that could affect yours is that line Kill("Server connection broken"); is being called more than once

Abhinav S13-Feb-10 7:18

Abhinav S

13-Feb-10 7:18

Why dont you just remove the delegate?

void clnt_Kill(string msg)        <br />
{           <br />
clnt.Kill -= new Client.kill(clnt_Kill);<br />
clnt = null;            <br />
MessageBox.Show(msg);            <br />
ms_Startclient.Checked = false;        <br />
}

Me, I'm dishonest. And a dishonest man you can always trust to be dishonest.
Honestly. It's the honest ones you want to watch out for...

Not Active13-Feb-10 7:31