C# Discussion Boards - CodeProject

TWatson4724-Aug-06 9:47

24-Aug-06 9:47

I am trying to right an if statement for a project that pulls data from a table.
like for instancte I have
int Mem = 0;
if (Mem ==1)//for true
{
lbMember.text = applicant.getfname() +" "+ applicant.getlname();
lbAdd.Text = address.getAddress();
}
else
lbMember.text = "not selected";
}
when I use int Mem = 0; I will get the else statement
when I use int Mem = 1; then I get the if selection
how do I get it to make the selection of choice from where the data is put in.

Thanks in advance

Re: if statements

Ennis Ray Lynch, Jr.24-Aug-06 9:52

Ennis Ray Lynch, Jr.

24-Aug-06 9:52

Please rephrase as I can't understand what it is you want. I would be glad to help, otherwise.

TWatson47 wrote:
when I use int Mem = 0; I will get the else statement
when I use int Mem = 1; then I get the if selection
how do I get it to make the selection of choice from where the data is put in.

On two occasions I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question. - Charles Babbage

Re: if statements

TWatson4724-Aug-06 10:31

TWatson47

24-Aug-06 10:31

when I set the values to 0 or 1, it is like I am forcing the statement to be true or false. Like if there is no joint member, I would like it to be false and use the else statement. If there is a joint member I would like it to be true and use the if statement. How should write the code to allow the selection to come from when they input the criteria.

Thanks so much for your help and speedy response

Re: if statements

Ennis Ray Lynch, Jr.24-Aug-06 10:38

Ennis Ray Lynch, Jr.

24-Aug-06 10:38

I still have no idea what you are asking.

Re: if statements

TWatson4724-Aug-06 11:22

TWatson47

24-Aug-06 11:22

ok, I will try to explain a little better. I have created some forms that say for instance a new member comes into a bank and want a loan. When the Agent puts there info into a build it is then saved to a server(database). The Idea is to have there info pull up with the selected loan form that they are wanting. Say for instance a auto loan. I have been able to pull the form with there info on it fine. However, I wanted to add some logic in place that looks to see if there is a joint member. If there is then hit all the tables requesting the joint information and load to the form. My problem is that when I set the variable, say for instance Jmem = 0, even if there is a joint member it comes up as false, and gives the else statement. My question is what do I need to add to the previous if statement that will except the joint member as true. The same if for beneficiary also.

I hope this helps in understanding
Thanks

Re: if statements

Ennis Ray Lynch, Jr.24-Aug-06 11:27

Ennis Ray Lynch, Jr.

24-Aug-06 11:27

If that is the case consider using booleans. Also from what I can gather it entirely possible that your value is not being set correctly if the if statement is not evaluating. Try setting a break on the if and checking the value of the variables. There are a lot of particular scenarios that can be causing your problem but the code

int mem = 0;
..some code that may reset me
if(mem == 1){
...
}
else{
...
}

is valid.

Re: if statements

TWatson4724-Aug-06 11:53

TWatson47

24-Aug-06 11:53

Thanks for you help. That is excactly how I had it coded, I just wasn't sure why I was having the problems. I even tried using

bool mem = false;
if(mem)
{...
}
else
{...
}
and it did the same thing.

Re: if statements

Ennis Ray Lynch, Jr.24-Aug-06 12:32

Ennis Ray Lynch, Jr.

24-Aug-06 12:32

Is your project building? If you have an incorrect version the debugger will still step but perform strange actions. Very confusing but it happens.

Re: if statements

Sean Michael Murphy24-Aug-06 11:07

Sean Michael Murphy

24-Aug-06 11:07

TWatson47 wrote:
int Mem = 0;
if (Mem ==1)//for true

Not trying to second guess your logic, but why wouldn't you want to use a bool type variable to do this?

bool mem = false;
   
// Some code that modifies the state of "mem"
   
if (mem) { 
   lbMember.text = applicant.getfname() +" "+ applicant.getlname();
   lbAdd.Text = address.getAddress();
} else {
   // mem == false
   lbMember.text = "not selected";
}

Why co-opt an int? That's a retro, "C"-type thing to do...
Just wondering.

Sean

Re: if statements

TWatson4724-Aug-06 11:47

TWatson47

24-Aug-06 11:47

I am new to C# I use to write in C++. Your idea looked good, however, I am still having the same problem. I am still get a false reaction even though it is true. I am getting a read out of "not selected" when it should be the members info.

Any suggestions, it looked like you where on the right path.

Thanks for the help

Re: if statements

eggsovereasy24-Aug-06 11:13

eggsovereasy

24-Aug-06 11:13

Are you saying you want to base your if/else on user input?

If so you can add a radio button with yes and no and do something like this

<br />
if (rbMember.SelectedItem.Text == Yes)<br />
{<br />
   // blah blah<br />
}<br />
else<br />
{<br />
   // blah blah<br />
}<br />
<br />

Re: if statements

Christian Graus24-Aug-06 12:07

Christian Graus

24-Aug-06 12:07

TWatson47 wrote:
how do I get it to make the selection of choice from where the data is put in.

I'm not sure what you mean ? If you mean the UI provides the case, use a checkbox.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: if statements

Guffa24-Aug-06 12:17

Guffa

24-Aug-06 12:17

The code that you are showing is perfectly valid, and will never have the problems that you are talking about.

Therefore:

:: Your code is different in some way from the code that you have shown.

:: Either the variable doesn't contain what you think it does, or you are doing the comparison wrong.

---
b { font-weight: normal; }

Re: if statements

KevinMac24-Aug-06 13:47

KevinMac

24-Aug-06 13:47

Your question interests me. What value are you storing in the database to indicate it is a joint or individual loan?

Re: if statements

Tyrus18224-Aug-06 18:16

Tyrus182

24-Aug-06 18:16

okay what it sounds like is that you are trying to get data from a database and use that value to do a specific action you obviosly need someway of obtaining that data from the database i don't know how you have this information stored but if its in some sort of class then you would do something like

<br />
if(Loan.JointAccount == "MyWife")<br />
{<br />
   do logic here<br />
}<br />
else<br />
{<br />
   do non joint logic here<br />
}<br />

Re: if statements

Coding C#24-Aug-06 20:38

Coding C#

24-Aug-06 20:38

Hi,

i think i got ur question.

wat about adding a checkbox to your form.
when it is selected you can set the value to true and take steps accordingly.
and if its not selected ie. false and you can perform the steps for false value.

hope this works.

Nitin...

AsyncSocket question

Tom Wright24-Aug-06 8:41

Tom Wright

24-Aug-06 8:41

so If I'm doing a BeginReceive on my client socket....can I just to a regular send for sending data or do I need to do a BeginSend to make my client socket app truly async?

Also if I want to fire an event when data comes in ...and I want to pass the incoming data with my event....do I want to do that after I call my EndReceive?

Thanks

Tom Wright
tawright915@gmail.com

Re: AsyncSocket question

vineas24-Aug-06 9:00

vineas

24-Aug-06 9:00

For firing the event when data comes in, you'll have to do that after you call EndReceive, or you won't know how much data you received (and possibly your buffer will not have the data - can't remember off-hand).

I've always used regular sends for sending data, and BeginReceive/EndReceive on the receiving end. I don't know if this really makes async, but I never quite understood the reasons for the overhead involved with BeginSend/EndSend - regular Send has always worked just fine for me.

-----
In the land of the blind, the one eyed man is king.

Re: AsyncSocket question

Tom Wright24-Aug-06 9:07

Tom Wright

24-Aug-06 9:07

Do I need to block on my send when sending?

Tom Wright
tawright915@gmail.com

Re: AsyncSocket question

Nader Elshehabi24-Aug-06 11:14

Nader Elshehabi

24-Aug-06 11:14

Hello

Tom Wright wrote:
I need to do a BeginSend to make my client socket app truly async?

Sending and receiving are two different operations. If you send using Send() method and recieve using BeginReceive() method, then your sending will be blocking, or sync opertation while recieving is not!!

For me, I prefer using multithreading. This is what really happens in the background. The Begin methods actually make a thread for you to do the job. Well, I like to have a control over my threads, even if I have ot write few more lines!!

So, my advice, Make a thread for each socket to handle sending/receiving data. A better more advanced approach -needs more care though- is to make two threads for each socket. One to send and the other to receive.

Regards Rose | [Rose]

Re: AsyncSocket question

Tom Wright25-Aug-06 6:45

Tom Wright

25-Aug-06 6:45

The problem is (I have this now) that when doing seperate threads for send and receive, I cannot seem to get the correct status of the socket back. So if the connection drops....ungracefully. My app never knows and keeps trying to send. So one way to get around this is to use the BeginSend and BeginReceive.

Do you have any other suggestions? Thank

Tom Wright
tawright915@gmail.com

Re: AsyncSocket question

Nader Elshehabi25-Aug-06 7:47

Nader Elshehabi

25-Aug-06 7:47

Hello

Sure!! There are plenty. You may check the status of the connection using the Connected property, or even set a timeout of the send operation using the SendTimeOut property to a reasonable value.

Regards Rose | [Rose]

Re: AsyncSocket question

Tom Wright25-Aug-06 8:15

Tom Wright

25-Aug-06 8:15

been there done that....If I send data...it sends it,not sure to where and the connected property only return the status of the connection from the last io on the port.
I've tried poll and ...one other method that escapes me.

Thanks

Tom Wright
tawright915@gmail.com

Re: AsyncSocket question

Nader Elshehabi25-Aug-06 9:20

Nader Elshehabi

25-Aug-06 9:20

Hello

Quoted from MSDN:

If you need to determine the current state of the connection, make a nonblocking, zero-byte Send call. If the call returns successfully or throws a WAEWOULDBLOCK error code (10035), then the socket is still connected; otherwise, the socket is no longer connected.

Try to use this non-blocking BeginSend() call just to check the current status.

I hope this helps. Smile | :)

Regards

how to "catch a delegate"

ezazazel24-Aug-06 8:07

ezazazel

24-Aug-06 8:07

Greetings again!

I have a question concearning delegates:

How to use a delegate which is passed by another class.
Here the exemple code, which shoould explain my question:

<br />
delegate void dSendParameters(string para);<br />

and in the Method

<br />
dSendParameters dSend = delegate(string para) { /*Call a Method;*/};<br />
Classes.OtherClass otherclass = new Classes.OtherClass(dSend);<br />

and her the code in the other class, which should "catch" the delegate

<br />
public class OtherClass<br />
{<br />
  public OtherClass(Delegate dSend)<br />
  {<br />
  }<br />
<br />
  private void buttonClickme_Click(object sender, EventArgs e)<br />
  {<br />
   // HERE I WANT TO CALL THE DELEGATE dSend!!!<br />
   // HOWTO DO THAT??<br />
  }<br />
}<br />

With Parameters it´s easy, just pass a ref and create a Parameter which get´s the value of the ref Parameter. But how to make a delegate available this way??

I need this, because I need to make referenced Assemblies able to call Methods of the
executing Assembly.

Thanks in advance,
ezazazel

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.