How to display a set of indexes to screen in array

Question

I'm using a List of BaseItem and I wanna show each time I press some button to show a different index range in array.

Here is an example I tried to add different items that aren't stackable.

Public class BaseItem
{
    public string name {get;set;}
    public string descrip {get;set;}
    public bool isStackable {get;set;}
    public int stackSize {get;set;}
    public int maxStackSize {get;set;}
    public Texture2D texure{get;set}
}

I used this part of code that I found on this site by searching.

Vector2 Pos;
int ItemsPerPage = 6;
int Columns = 1;
int Rows = 255;
int CurrentPage = 1;
int MaxPages;
BaseItem[,] items = new Baseitem[Columns,Rows];

public void Draw(SpriteBatch spriteBatch)
{

       for(int X = 0; i < Columns; X ++)
       {
          for(int X = 0; i < Columns; X ++)
          {
              int DrawX = Pos.X +(X * (slothSize +2);
              int DrawY = Pos.Y +(Y * (slothSize +2);
              spriteBatch.Draw(items[X,Y].texure, new Rectangle(DrawX, DrawY, 32,32), Color.Whie);
          }

       }

}

My problem, how do I show 6 items per page, so the extra items will be moved to next page,

so if I have 30 items I wound need to have 5 pages that all have 6 items.

My main question is how to set and move pages 1 by 1 and show on each page x amount of items using var itemsPerPage.

So basically moving extra items on extra pages and adding number var maxpages based on itemes.length / ItemsPerPage = maxPages

What I have tried using 1D array Also I can't draw more items at the time. They all drawn on same position. If I use For loop 2 times...making it X and Y pos....it wont Draw. Here is an example:

BaseItem items[,] = new BaseItem[] {} 


public void Draw(SpriteBatch spriteBatch)
{
     var result = Items.Cast<double>().Skip(ItemsPerPage * Currentpage).Take(itemsPerPage);
    foreach(item in result)
    {
        for(int X = 0; X < Columns; X++)
        {
            for(int Y = 0;Y < Rows; Y++)
             { 
                 int DrawX = pos.X + (X * (SlowtWidth +2);
                 int DrawY = pos.Y + (Y * (SlowtWidth +2);
                 if(items[X,Y] != null)
                 {
                      spriteBatch.Draw(items[X,Y], new Rectangle(DrawX,DrawY,SlotWidth, SlotHeight) new Rectangle(0,0,SlotWidth, SlotHeight),Color.White)  
                 }
             {
        {
    }
}

public void Update(GameTime gameTime)
{
    if(CurrentPage <= 0)
    {
       CurrentPage = MaxPages;
    }

    if(CurrentPage => MaxPages)
    {
       CurrentPage = 1;
    }
    if(Input.KeyPressed(Keys.A))
    { 
        CurrentPage++;
    {
    if(Input.KeyPressed(Keys.D))
    { 
        CurrentPage--;
    {
    Input.Update(gameTime)
}

Now it wont Draw items to a screen at all...if I just replace result with items(list) it will draw but not cap the list with ItemsPerPage

I can set number of "slots" by using columns and rows but how can I change page...aka skip a numbers in array and show next index...somethingh like for 1D array .skip(20).take(29) bud done in 2D array?

Answer 1

In your Draw method you've got two Rectangles: first with DrawX and DrawY set as position and second with 0,0. I think, you could use second one instead of first.