我需要在文本框中的格式表格中打印出二维数组的元素，尺寸为4,5，因此有4行和5列。我知道我必须使用嵌套循环，但我是c＃的新手，我只是不知道如何构造循环。
//this is my array
int[,] productsArray = new int[4, 5];
已经分配了数组的元素。这是我正在寻找的格式。
Monday Tuesday Wednesday Thursday Friday
week 1 1 2 3 4 5
week 2 6 7 8 9 10
week 3 11 12 13 14 15
week 4 16 17 18 19 20
为了给你一些更多的上下文，这是我已经分配数组元素的代码。
String value;
int num;
for (int week = 0; week < productsArray.GetLength(0); week++)
{
for (int day = 0; day < productsArray.GetLength(1); day++)
{
value = Microsoft.VisualBasic.Interaction.InputBox("Enter value for " + day + " of week " + week, "Enter Value");
try
{
while (!(int.TryParse(value, out num)))
{
MessageBox.Show("Not a valid number, try again.");
value = Microsoft.VisualBasic.Interaction.InputBox("Enter a number", "Enter Number");
}
}
catch (Exception)
{
MessageBox.Show("Value entered is not in a valid format");
}
productsArray[week, day] += int.Parse(value);
答案 0 :(得分：0)
您可以在PadLeft的帮助下完成冻结：
public static String FormatArrayOut(int[,] productsArray) {
StringBuilder Sb = new StringBuilder();
// You'd probably load week days' names from resource
String[] weekdayNames = new String[] {"Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Satturday", "Sunday"};
int weeksLength = (productsArray.GetUpperBound(1) + 1).ToString().Length;
// Head
Sb.Append(' ', "week ".Length + weeksLength);
for (int i = 0; i <= productsArray.GetUpperBound(0); ++i) {
Sb.Append(" ");
Sb.Append(weekdayNames[i]);
}
// Body
for (int i = 0; i <= productsArray.GetUpperBound(0); ++i) {
Sb.AppendLine();
Sb.Append("week ");
Sb.Append((i + 1).ToString().PadLeft(weeksLength));
for (int j = 0; j <= productsArray.GetUpperBound(1); ++j) {
Sb.Append(' ');
Sb.Append(productsArray[i, j].ToString().PadLeft(weekdayNames[j].Length + 1));
}
}
return Sb.ToString();
}
...
int[,] productsArray = new[,] {
{1, 2, 3, 4, 5},
{6, 7, 8, 9, 10},
{11, 12, 13, 14, 15},
{16, 17, 18, 19, 20}
};
String result = FormatArrayOut(productsArray);
结果是
Monday Tuesday Wednesday Thursday Friday
week 1 1 2 3 4 5
week 2 6 7 8 9 10
week 3 11 12 13 14 15
week 4 16 17 18 19 20
答案 1 :(得分：0)
您可以按如下方式将数据添加到数组中，
for (int i = 0; i < productsArray.GetLength(0); i++)
{
for (int j = 0; j < productsArray.GetLength(1); j++)
{
Console.Write("Enter value for " + j.ToString() + " of week " + i.ToString() + " ==> ");
string value=Console.ReadLine();
int intVal=0;
if (int.TryParse(value, out intVal))
{
productsArray[i, j] = intVal;
}
else
{
j--;
}
}
如果需要将数组中的所有值打印到文本框，称为txtbx，
for (int i = 0; i < productsArray.GetLength(0); i++)
{
for (int j = 0; j < productsArray.GetLength(1); j++)
{
txtbx.Text = txtbx.Text + "\t" + productsArray[i, j].ToString();
}
txtbx.Text = txtbx.Text + "\n";
}
}
答案 2 :(得分：0)
好的，首先请注意，如果您使用空格格式化文本布局，则需要使用固定间距字体，例如Courier。
您可以使用名为“复合格式”的内容格式化文本的每一行。
基本上，您可以指定项目的格式，如下所示：{1,7}。这意味着：“获取索引1处的参数并将其右对齐格式化为7个字符的宽度”。
这是一个示例控制台应用程序，可根据您的喜好格式化文本：
using System;
using System.Text;
namespace Demo
{
internal class Program
{
private void run()
{
int[,] productsArray = new int[4, 5];
for (int i = 0, k = 1; i < 4; ++i)
for (int j = 0; j < 5; ++j, ++k)
productsArray[i, j] = k;
Console.WriteLine(format(productsArray));
}
private string format(int[,] productsArray)
{
var text = new StringBuilder();
text.Append(" Monday Tuesday Wednesday Thursday Friday\n");
for (int i = 0; i < productsArray.GetLength(0); ++i)
{
text.AppendFormat
(
"week {0} {1,7} {2,8} {3,10} {4,9} {5,7}\n",
i+1,
productsArray[i, 0],
productsArray[i, 1],
productsArray[i, 2],
productsArray[i, 3],
productsArray[i, 4]
);
}
return text.ToString();
}
private static void Main()
{
new Program().run();
}
}
}
要在您的计划中使用此功能，而不是Console.WriteLine(format(productsArray));，请执行以下操作：
yourTextBox.Text = format(productsArray);
答案 3 :(得分：0)
试试这个
string[] days = new[] { "Monday", "Tuesday", "Wednesday", "Thursday", "Friday" };
string week = "week ";
StringBuilder sb = new StringBuilder();
sb = sb.Append(' ',week.Length+2);
for(int i=0;i<days.Length;i++)
{
sb = sb.Append(days[i].ToString().PadLeft(10));
}
sb = sb.Append("\n");
for (int i = 0; i < productsArray.GetLength(0); i++)
{
sb = sb.Append("week " + (i + 1) + " ");
for (int j = 0; j < productsArray.GetLength(1); j++)
{
sb = sb.Append(productsArray[i, j].ToString().PadLeft(10));
}
sb = sb.Append("\n");
}
Console.WriteLine(sb.ToString());
答案 4 :(得分：0)
或试试这个，
string[] days = new[] { "Monday", "Tuesday", "Wednesday", "Thursday", "Friday" };
string week = "week ";
StringBuilder sb = new StringBuilder();
sb = sb.Append(' ',week.Length+2);
for(int i=0;i<days.Length;i++)
{
sb = sb.Append(days[i].ToString());
sb = sb.Append(' ',5);
}
sb = sb.Append("\n");
for (int i = 0; i < productsArray.GetLength(0); i++)
{
sb = sb.Append("week " + (i + 1) + " ");
for (int j = 0; j < productsArray.GetLength(1); j++)
{
sb = sb.Append(productsArray[i, j].ToString().PadLeft(days[j].Length));
sb = sb.Append(' ', 5);
}
sb = sb.Append("\n");
}
Console.WriteLine(sb.ToString());