CODEWITHSUNDEEP
c#winforms
Verlander store
Verlander store

Reputation: 87

Is it possible to add new Rectangle variable with for loop in winform c#?

Is it possible to make new rectangle variable with one for loop ? or should i declare it one by one ? I try to make snake and ladder map and it will be much easier if i can declare 100 rectangle with only one for loop.

enter image description here

I tried to make the code but it's not working.

for (int i = 0; i < 100; i++)
{
    Rectangle String.Format("Land {}", i) = new Rectangle(0, 0, 200, 100);
}

Upvotes: 0

Views: 205

Answers (1)

Thomas Weller
Thomas Weller

Reputation: 59410

You probably want an array:

var rectangles = new Rectangle[100];
for (int i = 0; i < 100; i++)
{
    rectangles[i] = new Rectangle(0, 0, 200, 100);
}

An array can hold many objects and you have only one name + a number to access it.

For a square, you can do something like

var rectangles = new Rectangle[100];
for (int i = 0; i < 10; i++)
{
    for (int j = 0; j < 10; j++)
    {
        rectangles[i*10 + j] = new Rectangle(i*100, j*100, 100, 100);
    }
}

Even cooler, there's a 2D version of an array:

var rectangles = new Rectangle[10,10];
for (int i = 0; i < 10; i++)
{
    
    for (int j = 0; j < 10; j++)
    {
        rectangles[i, j] = new Rectangle(i*100, j*100, 100, 100);
    }
}

Don't forget to add the rectangles to your Form in order to display it.

When you understood the concept of an array, you might want to have a look at Lists and then Dictionaries. They are more flexible, because they don't have a fixed size.

Upvotes: 1

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