в 15:31, 26 мая 2010

2010-05-26T15:31:53Z

Admin: 1 версия

2010-05-26T12:15:59Z

1 версия

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==Call GetType and ToString on object instance==

<source lang="csharp">using System;
public class Thing
{
public int i = 2;
public int j = 3;
}

public class objectTypeApp
{
public static void Main()
{
object a;
a = 1;
Console.WriteLine(a);
Console.WriteLine(a.ToString());
Console.WriteLine(a.GetType());
Console.WriteLine();

Thing b = new Thing();
Console.WriteLine(b);
Console.WriteLine(b.ToString());
Console.WriteLine(b.GetType());
}
}</source>

==Creating an array of objects.==

<source lang="csharp">using System;
class MainClass {
private int fValue;
public MainClass() {
fValue = 0;
}
public void setValue(int value) {
fValue = value;
}
public int getValue() {
return fValue;
}
public static void Main() {
MainClass[] arr = new MainClass[10];
for (int i = 0; i < 10; ++i)
arr[i] = new MainClass();
for (int i = 0; i < 10; ++i)
arr[i].setValue(i);
for (int i = 0; i < 10; ++i)
Console.WriteLine("Object {0}. Value = {1}",
i, arr[i].getValue());
}
}</source>

==Instance Class Members==

<source lang="csharp">using System;
class MyClass
{
public int memberVariable;
}
class MainClass
{
static void Main()
{
MyClass d1 = new MyClass();
MyClass d2 = new MyClass();
d1.memberVariable = 10;
d2.memberVariable = 28;
Console.WriteLine("d1 = {0}, d2 = {1}", d1.memberVariable, d2.memberVariable);
}
}</source>
<pre class=codeResult>d1 = 10, d2 = 28</pre>

==Invoke a method in a class==

<source lang="csharp">using System;

class MyClass
{
void PrintDateAndTime()
{
DateTime dt = DateTime.Now;
Console.WriteLine("{0}", dt);
}
static void Main()
{
MyClass mc = new MyClass();
mc.PrintDateAndTime();
}
}</source>
<pre class=codeResult>25/03/2007 2:14:04 PM</pre>

==public member method==

<source lang="csharp">using System;
class MyClass
{
public int High, Low;

public int Sum()
{
return High + Low;
}
}
class MainClass {
static void Main()
{
MyClass T1 = new MyClass();
MyClass T2 = new MyClass();
T1.High = 76;
T1.Low = 57;

T2.High = 75;
T2.Low = 53;
Console.WriteLine("T1: {0}, {1}, {2}", T1.High, T1.Low, T1.Sum ());
Console.WriteLine("T2: {0}, {1}, {2}", T2.High, T2.Low, T2.Sum ());
}
}</source>
<pre class=codeResult>T1: 76, 57, 133
T2: 75, 53, 128</pre>

==Try to change static value in different instance==

<source lang="csharp">using System;
class MyClass
{
int nonStaticVariable;
static int staticVariable;
public void SetVars(int v1, int v2)
{
nonStaticVariable = v1;
staticVariable = v2;
}
public void Display()
{
Console.WriteLine("nonStaticVariable= {1}, staticVariable= {2}", nonStaticVariable, staticVariable);
}
}
class MainClass
{
static void Main()
{
MyClass d1 = new MyClass(), d2 = new MyClass();
d1.SetVars(2, 4);
d1.Display();
d2.SetVars(15, 17);
d2.Display();
}
}</source>

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Csharp/CSharp Tutorial/Class/Class Instance - История изменений

в 15:31, 26 мая 2010

Admin: 1 версия