c# How do i display this array in a messagebox (co

问题:

Can anyone help me use a message box to display the random number and the square in two columns with a label for each?

    const int NUM_ROWS = 10;
    const int NUM_COLS = 2;

        int[,] randint = new int [NUM_ROWS,NUM_COLS];
        Random randNum = new Random();

        for (int row = 0; row < randint.GetLength(0); row++)
        {
            randint[row,0] = randNum.Next(1,100);
            randint[row,1] = randint[row,0]*randint[row,0];

        Console.Write(string.Format("{0,5:d} {1,5:d}\n", randint[row,0], randint[row,1]));

回答1:

I have achieved it by adding reference of System.Windows.Forms to my console application and got the result you desired. Here is my code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace ConsoleApplication6
{
    class Program
    {
        static void Main(string[] args)
        {
            const int NUM_ROWS = 10;
            const int NUM_COLS = 2;

            int[,] randint = new int[NUM_ROWS, NUM_COLS];
            Random randNum = new Random();

            for (int row = 0; row < randint.GetLength(0); row++)
            {
                randint[row, 0] = randNum.Next(1, 100);
                randint[row, 1] = randint[row, 0] * randint[row, 0];

                Console.Write(string.Format("{0,5:d} {1,5:d}\n", randint[row, 0], randint[row, 1]));

                MessageBox.Show(string.Format("{0,5:d} {1,5:d}\n", randint[row, 0], randint[row, 1]));
                Console.ReadKey();
            }
        }
    }
}  

My output:
Also though this is not asked but just in case to add reference to System.Windows.Form look right click on the references in your solution explorer and select .Net tab and then press ok after selecting the desired dll. Cheers!

回答2:

Start you project in :

Windows Forms Application -> C#

You can use MessageBox to help you solve your display content.

回答3:

You can do it like this.

MessageBox.Show(string.Format("{0,5:d} {1,5:d}\n", randint[row, 0], randint[row, 1]), "Message Box",
                                     MessageBoxButtons.YesNo,
                                     MessageBoxIcon.Question);

If you place this line inside the for loop a message box will be displayed for every iteration. If you click Yes each time, a new message box with the old and new values will be displayed.

If you want to display the entire array then it will be something like this.

string data = "";

for (int row = 0; row < randint.GetLength(0); row++)
{
     randint[row, 0] = randNum.Next(1, 100);
     randint[row, 1] = randint[row, 0] * randint[row, 0];
     data += string.Format("{0,5:d} {1,5:d}\n", randint[row, 0], randint[row, 1]);
}

MessageBox.Show(data, "Data", MessageBoxButtons.YesNo, MessageBoxIcon.Question);