Custom class array syntax help

[Mick]

Hello, I know C++ but am new to C# so bear with me.

I want to create an array of my own class. Something like this:
///////////////////////////////////////
class CLoginInfo
{
public string name;
public string id;
public string pw;

public CLoginInfo()//constructor
{
this.name = "";//initialize
this.id = "";
this.pw = "";
}
}
private CLoginInfo[] m_logins;

public Form1()
{
m_logins = new CLoginInfo[3];
...
m_logins[0].name = "Mick";//???? exception!!!
m_logins[0].id = "MicksID";
m_logins[0].pw = "MicksPW";
...
m_logins[1].name = "Joe";
m_logins[1].id = "JoesID";
m_logins[1].pw = "JoesPW";
...
}
///////////////////////////////////////

This compiles but I get the runtime exception error: "Object reference
not set to an instance of an object."

What is the proper syntax?

Also is there a way to dynamically change the size of the array?

Thank you for any suggestions,
Mick
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[José Joye]

By doing m_logins = new CLoginInfo[3];
You actually declare an array that refers to CLoginInfo instances. You do
not create the objects.
After your creation, if you look at the content of m_logins[0], it will be
null.

You habe to create the 3 objects and assign them to your array.

Joaé
"Mick" <no*****@nowhere.com> a écrit dans le message de
news:uN****************@TK2MSFTNGP11.phx.gbl...

Hello, I know C++ but am new to C# so bear with me.

I want to create an array of my own class. Something like this:
///////////////////////////////////////
class CLoginInfo
{
public string name;
public string id;
public string pw;

public CLoginInfo()//constructor
{
this.name = "";//initialize
this.id = "";
this.pw = "";
}
}
private CLoginInfo[] m_logins;

public Form1()
{
m_logins = new CLoginInfo[3];
...
m_logins[0].name = "Mick";//???? exception!!!
m_logins[0].id = "MicksID";
m_logins[0].pw = "MicksPW";
...
m_logins[1].name = "Joe";
m_logins[1].id = "JoesID";
m_logins[1].pw = "JoesPW";
...
}
///////////////////////////////////////

This compiles but I get the runtime exception error: "Object reference
not set to an instance of an object."

What is the proper syntax?

Also is there a way to dynamically change the size of the array?

Thank you for any suggestions,
Mick
*** Sent via Developersdex http://www.developersdex.com ***
Don't just participate in USENET...get rewarded for it!