我想点击一个正方形,然后一个"X"应该出现里面,但我不知道在里面放什么Form1_MouseDown,Form1_Paint和Form1_MouseUp事件.我怎样才能实现这个C#？
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace VTest
{
public partial class Form1 : Form
{
Rectangle rect; // single rect
int sqsize, n;
int margin;
public Form1()
{
n = 3;
margin = 25;
sqsize = 50;
rect = new Rectangle(10, 10, 150, 150);
InitializeComponent();
}
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
// what goes here?
}
private void Form1_Paint(object sender, …这是我使用的代码的简化版本.我需要使用LINQ重写它.
class Program
{
// Here is the ugly stuff
static void DoStuff(int[] uidArray)
{
int chunkCount = (int)Math.Ceiling(uidArray.Length / 10d);
for (int i = 0; i < chunkCount; i++)
{
// calculating the remaining uids.
// this is super ugly imho, but I couldnt come up with anything better...
int remaining = (i == chunkCount - 1) ? uidArray.Length - i * 10 : 10;
int[] currentChunks = uidArray.Skip(i * 10).Take(remaining).ToArray();
string[] data = GetDataForUids(currentChunks);
foreach (string item in …我运行以下程序时收到NullReferenceException.我认为问题来自于我正在创建一个Line包含Point类的事实.
using System;
class Driver
{
static void Main()
{
Point pOne = new Point();
Point pTwo = new Point(2, 1);
Console.Write("Point pOne: ");
PrintPoint(pOne);
Console.Write("Point pthree: ");
PrintPoint(pTwo);
Line lOne = new Line(pOne, pTwo);
Console.WriteLine("Line lOne: ");
PrintLine(lOne);
//Rectangle rOne = new Rectangle();
Rectangle rOne = new Rectangle(lOne);
Console.WriteLine("Rectangle rOne: ");
PrintRectangle(rOne);
Console.ReadLine();
}
// The PrintPoint method
// purpose: display the coordinates of a Point
// Parameters: a Point object
// returns: none
static …我有一个文件存储一类学生的考试成绩.我正在尝试编写一个程序,该程序可以成功打开文件,读取考试分数,找到平均分数,最高分数和最低分数,并打印出来.平均分数应在小数点后打印2位数.
这是我到目前为止:
static void Main()
{
string myData = "";
int temp = 0;
int max = 0;
int min = 0;
double average = 0;
StreamReader fileReader = new StreamReader("data.txt");
do
{
myData = fileReader.ReadLine();
if (myData != null)
{
max = int.Parse(myData);
temp = int.Parse(myData);
if (temp > max)
temp = max;
}
} while (myData != null);
fileReader.Close();
Console.ReadLine();
}//End Main()
我不知道如何继续.如何读取新行并将其分配给temp？我不认为我做得对.
Aries March 21 to April 20.
Taurus April 21 to May 20.
Gemini May 21 to June 21.
我需要通过将用户的出生月份和日期作为输入来打印用户的占星符号.我如何获得日期范围？
EX:3月21日至4月20日
我必须从Clarion数据库创建一个MySQL数据库.这些表是.tps文件.
我不知道该怎么做,现在我只找到了与.dat文件一起使用的应用程序.
我正在创建一个简短的C#控制台程序,它将使用0-10的随机数询问10个附加问题.然后它告诉用户他们有多少正确或不正确的答案.我试图找到一种方法来验证我的用户输入是一个数字而不是一个字母.我发布了目前为止创建的代码,但可以使用一些帮助.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
int i = 0;
int input;
int correct = 0;
int incorrect = 0;
int questions = 10;
int[] solutions = new int[21];
int[] answers = new int[21];
int[] number1 = new int[21];
int[] number2 = new int[21];
Random number = new Random();
Console.WriteLine(" This is a test of your basic addition skills. ");
Console.WriteLine(" Please answer the random addition …我正在用C#编写一个生命游戏程序.我正在使用2D数组结构.似乎当我显示Random方法时,邻居或某事的算法是错误的.当它经历了几代人时,随机细胞就会变得"活着".有帮助吗？
public struct cellDetail
{
public int curGenStatus;
public int nextGenStatus;
public int age;
}
public class Class1
{
static cellDetail[,] Generations(cellDetail[,] cells)
{
int neighbours = 0;
for (int i = 0; i < 40; i++)
for (int j = 0; j < 60; j++)
cells[i, j].nextGenStatus = 0;
for (int row = 0; row < 39; row++)
for (int col = 0; col < 59; col++)
{
neighbours = 0;
if (row > 0 && col > 0) …