How to make a two-dimensional arrangement of String in C #?

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How to make a two-dimensional arrangement of String in C #?

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#2 by (0 votes)

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I have a small problem, I hope and you can support me;

The problem is that I want to make a 2-dimensional arrangement to make a table, something like this:

                    string[][] dat = new string[][]
                {
                    new string[] {"Tienda"     ,"Existencias"},
                    new string[] {"Argentina","1"},
                    new string[] {"México","5"},
                    new string[] {"Brazil","9"},
                    new string[] {"Canada","2"}

                };

As you can see, there are 2 columns and several rows, the columns are always going to be 2 but the rows may vary.

To be moving the array indexes and and filling them with for , this is the code that I have and try but only the last element that gives true in if is saved;

Store[] tienda = p_item;
for (int c = 0; c < tienda.Length; c++)
        {
            if (tienda[c].stockOnHand > 0)
            {
                string[][] dat = new string[][]
                {
                    new string[] {tienda[c].storeName ,tienda[c].stockOnHand.ToString()}
                };

                v_dataTable = dat;
            }
            else
            {

            }
        }

Try putting a variable that was increasing, but it shows me an error: "Error 1 A constant value is expected"

string[][] dat = new string[][]
                {
                    new string[numero] {tienda[c].storeName ,tienda[c].stockOnHand.ToString()}

                };
                numero++;

Is there any way to do something like this?

String[][] dat = new String[][];
dat[c][1]={"tienda[c].storeName ,tienda[c].stockOnHand.ToString()"};

To fill the positions according to the position of the arrangement and to make the table.

Do you have any other idea of how to fill that arrangement?

string c# array bucle-for

asked by roboto10 30.10.2018 в 22:49

source

2 answers

Error showing data in a Grid layout group Format of dates

score 0 · Answer 1

At least the first dimension should indicate it, something like this

Store[] tienda = p_item;

string[][] dat = new string[tienda.Length][];

for (int c = 0; c < tienda.Length; c++)
{
    if (tienda[c].stockOnHand > 0)
    {
        dat[c] = new string[] {tienda[c].storeName ,tienda[c].stockOnHand.ToString()}
    }

}

analyze the documentation of how this type of array works

Jagged Arrays (C # Programming Guide)

But I really would not recommend using this type of array, use lists and classes, that is, define

public class Tienda
{
    public string storeName {get;set;}
    public string stockOnHand {get;set;}
}

and then you use linq

List<Tienda> dat = p_item.Where(x=>x.stockOnHand > 0)
                        .Select(new Tienda()
                        {
                            storeName = x.storeName,
                            stockOnHand = x.stockOnHand.ToString()
                        }});

So easy, you have a list that will be the rows and the entity Tienda has the two properties that will be the columns

score 0 · Answer 2

I already found how to solve it and it is that a class was used to make the table but I decided to do it directly and that's how it worked, I'll leave it as if it's useful for someone

  DataTable dt = new DataTable();
        dt.Columns.Add("Tienda", typeof(string));
        dt.Columns.Add("Existencias", typeof(string));

        for (int c = 0; c < tienda.Length; c++)
        {
            if (tienda[c].stockOnHand > 0)
            {
                dt.Rows.Add(new object[] { tienda[c].storeName, tienda[c].stockOnHand.ToString()});
            }
            else
            {

            }
        }ódigo aquí