开始学习编码。
让控制台写一个10乘10的数字网格随机增加值。 试图在表单中做同样的事情(DataGridView)。 它运行正常,但在完成计算之前没有窗口(我必须设置限制 - 而不是无限循环)。
我来到这里阅读有关刷新和doevent的信息 - 但它们会大大减慢一切。但至少我可以看到计算结果正在发生。
我试图绕过背景工作者而我恐怕不能。如果我在循环中进行计算 - 如何将这些计算与屏幕更新分开。
编辑:跟随Nico的帮助(谢谢!!)并得到了这个。好多了,但仍然有大量的滞后。但是一个数量很少的火箭。 有什么帮助可以加快速度吗?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 stackoverflowTest
{
public partial class Form1 : Form
{
Random rnd = new Random((Int32)DateTime.Now.Ticks);
private static int numSides = 8;
int numDice=2;
private int numRolls = 100000000;
private int max = 1;
private int min = 0;
private int diff = 0;
private double pdiff = 0d;
int[] array = new int[numSides *numSides];
public Form1()
{
InitializeComponent();
}
private void Form1Load(object sender, EventArgs e)
{
SetupDataForm1();
SetupDataForm2();
var bw = new BackgroundWorker();
bw.DoWork += BwDoWork;
bw.RunWorkerAsync(); //Start the worker
}
private void BwDoWork(object sender, DoWorkEventArgs e)
{
for (int rolls = 1; rolls < numRolls+1; rolls++)
{
// Roll two dice and increase that slot in the table
int y = Dice.Roll(numSides, rnd);
int x = Dice.Roll(numSides, rnd);
int k = Convert.ToInt32(dataGridView1.Rows[x].Cells[y].Value);
dataGridView1.Rows[x].Cells[y].Value = k + 1;
//Enter table into an array to work out max/min etc later
for (int i = 0; i < (numSides * numSides); i++)
{
int row = i / numSides;
int col = i % numSides;
array[i] = Convert.ToInt32(dataGridView1.Rows[row].Cells[col].Value);
}
max = array.Max();
min = array.Min();
diff = max - min;
if (max > 0) pdiff = (((double)diff / (max)) * 100);
dataGridView2.Rows[0].Cells[0].Value = rolls;
dataGridView2.Rows[1].Cells[0].Value = max;
dataGridView2.Rows[2].Cells[0].Value = min;
dataGridView2.Rows[3].Cells[0].Value = diff;
dataGridView2.Rows[4].Cells[0].Value = pdiff.ToString("0.000");
dataGridView2.Rows[5].Cells[0].Value = (array.Average()).ToString("0");
dataGridView2.Rows[6].Cells[0].Value = ((array.Average()/rolls)*100).ToString(("0.0000000"));
}
}
private void SetupDataForm1()
{
dataGridView1.Font = new Font("Microsoft Sans Serif", 6F);
dataGridView1.RowTemplate.Height = 11;
//Add Columns
for (int i = 0; i < numSides; i++)
{
dataGridView1.Columns.Add(i.ToString(), (i+1).ToString());
dataGridView1.Columns[i].Width = 35;
}
// Add Rows
for (int i = 0; i < numSides; i++)
{
dataGridView1.Rows.Add();
if (i % 2 != 0)
{
dataGridView1.Rows[i].DefaultCellStyle.BackColor = Color.LightGray;
}
dataGridView1.Rows[i].HeaderCell.Value = ((i+1)*10).ToString();
}
}
private void SetupDataForm2()
{
dataGridView2.Font = new Font("Microsoft Sans Serif", 8F);
dataGridView2.RowTemplate.Height = 16;
//Add Columns
for (int i = 0; i < 1; i++)
{
dataGridView2.Columns.Add(i.ToString(), "");
dataGridView2.Columns[i].Width = 65;
}
// Add Rows
for (int i = 0; i < numSides; i++)
{
dataGridView2.Rows.Add();
if (i % 2 != 0)
{
dataGridView2.Rows[i].DefaultCellStyle.BackColor = Color.LightGray;
}
}
dataGridView2.Rows[0].HeaderCell.Value = "Rolls";
dataGridView2.Rows[1].HeaderCell.Value = "Max";
dataGridView2.Rows[2].HeaderCell.Value = "Min";
dataGridView2.Rows[3].HeaderCell.Value = "Diff";
dataGridView2.Rows[4].HeaderCell.Value = "%";
dataGridView2.Rows[5].HeaderCell.Value = "Avg";
dataGridView2.Rows[6].HeaderCell.Value = "Av%";
}
public class Dice
{
public static int Roll(int numberOfSides, Random rnd)
{
return rnd.Next(0, numberOfSides);
}
}
}
}
答案 0 :(得分:0)
如果没有窗口,则在窗体的构造函数中执行计算。要在开始计算之前使表单可见,请将代码放在表单的Load事件中。因此,双击窗体属性窗口中的事件,将创建一个方法。将您的代码放入此方法中。
如果要使用后台工作程序,则过程类似。但是,您需要创建Backgroundworker
。例如。在代码中:
private void Form1_Load(object sender, EventArgs e)
{
var bw = new BackgroundWorker();
bw.DoWork +=
如果您开始输入,Visual Studio建议为该事件创建一个方法。按两次Tab键生成它,你基本上会得到以下代码:
private void Form1_Load(object sender, EventArgs e)
{
var bw = new BackgroundWorker();
bw.DoWork += bw_DoWork;
bw.RunWorkerAsync(); //Start the worker
}
void bw_DoWork(object sender, DoWorkEventArgs e)
{
throw new NotImplementedException(); //remove this
}
将您的计算代码放在bw_DoWork方法中,它将在后台执行,而不会影响用户界面。