For an explanation of why the Windows Message loop won t work for real-time display, and what a game loop is, see: http://www.mvps.org/directx/articles/writing_the_game_loop.htm

计算机游戏不可能出现任何可预见的拖延,因此,大多数计算机游戏都试图优化性能,以便在60赫兹圣杯或以上的圣杯上达到基准。 (只有24hz才会预测,你是否认为它们是“拖延的”?)

www.un.org/Depts/DGACM/index_spanish.htm 用实时显示书写申请是非曲线,我高度建议考虑以下列任何方式损害Windows提供的内容:

• Create a timer that queues up screen updates at an acceptable rate (10 or more times per second). The user will not perceive the event as delayed, because a user cannot perceive delays that occur at a small fraction of a second.
• Raise an event when the underlying data changes and let Windows to decide when to update the display (this will virtually always be acceptable).
• If possible, come up with an alternate display that is not grid-based. Perhaps a scrolling console, or some other interface that displays the relevant information without overwriting old information. This may not be applicable, but coming up with another interface idea is often a good approach when the interface you want won t work.

If you really, really still want a very high-performance user interface, and write a game loop, you can do so in C# and paint a grid on your own to a DirectX surface. Once you get the hang of DirectX, drawing a grid is fairly easy, it s just a bunch of lines. With this approach you will avoid dealing with the Windows message loop, and potentially approach real-time performance.

Here s a great tutorial on how to use DirectX and how to render on a Windows form:

http://www.godpatterns.com/2005/02/using-directx-and-c-sharp-to-create.html

你在评论中说,你的繁重处理常常是报告进展情况,你可以不提任何报告(因为报告是需要显示的真实数据)。

你们应该做的是执行(双重)缓冲,向缓冲工作报告进展,并且每次与全球倡议同步进行缓冲。

Pseudocode如下:

DataGrid Grid; // This displays the data
List<object> DataBuffer; // Frequent updates are performed on this list

void BackgroundThreadLoop()
{
   while(true) // This loop iterates 7000 times in 20 seconds
   {
       var result = DoSomeHeavyCalculations();

       // Depending on the nature of the result, you can either just add it to list
       // or perhaps modify existing entries in the list in some way.
       DataBuffer.Add(result); // The simple case
       PerformSomeUpdating(DataBuffer, result); // The complicated case
   }
}

Timer RefreshTimer;
override void OnLoad()
{
    RefreshTimer = new Timer();
    RefreshTimer.Interval = 500; // easy to experiment with this
    RefreshTimer.Tick += (s, ea) => DrawBuffer(DataBuffer);
}

void DrawBuffer(List<object> DataBuffer)
{
    // This should copy DataBuffer and put it in the grid as fast as possible.

    // How to do this really depends on how the list changes and what it contains.
    // If it s just a list of strings:
    Grid.DataSource = DataBuffer.ToList(); // Shallow copy is OK with strings

    // If it s a list of some objects that have meaningful Clone method:
    Grid.DataSource = DataBuffer.Select(o => o.Clone).ToList();

    // If the number of elements is like constant and only some values change,
    // you could use some Dictionary instead of List and just copy values.
}

如果你提供更准确的信息,我或许能够进一步帮助。

UPDATE

有了新细节,我建议把个人带至物体changes。 代表某些物体结构变化的最一般方式是功能(或许是无参数的<代码> 行动)。 在接受修改的同时,你还修建了更新功能,直接修改了有观点的数据,并将这些数据储存在缓冲区:

List<Action> UpdateBuffer;
void OnUpdateReceived(MyType objToModify, object newValue)
{
    // The point is to make the lambda (below) as efficient as you can; 
    // finding the object and preparing the update should be done here, so that
    // no time is wasted during redraw in the main thread.

    UpdateBuffer.Add(() => objToModify.ApplyNewValueInSomeWay(newValue));


    // some other method should be constructed to add data to the view, but you get the point
}

现在,(名称不再充分,但无一例外)方法容易:

void DrawBuffer()
{
    List<Action> bufferCopy;
    lock(UpdateBuffer) // the other thread should also lock the buffer for adding
    {
        bufferCopy = UpdateBuffer.ToList();
        UpdateBuffer.Clear();
    }
    view.SuspendLayout();
    foreach(Action a in bufferCopy)
        a();
    view.ResumeLayout();
}

显然,我没有尝试这一准确的解决办法,但它使你有能力控制重排频率和重整批集,而不是单一更新。

我刚刚做了抽样申请,将通过背景工作者填写内部名单,数据将在数据GridView中显示。 如果符合你的要求,你可以改变发现的字句速度:

最为令人感兴趣的部分应当是守则本身的形式:

public partial class FormMain : Form
{
    private List<Person> _Persons;
    private Random _Random;
    private int _TimeoutBetweenInserts;

    public FormMain()
    {
        InitializeComponent();

        // Initialize our private fields
        _Random = new Random();
        _Persons = new List<Person>();
        _TimeoutBetweenInserts = (int)numericUpDownTimeoutBetweenInserts.Value;

        // Attach the list to the binding source and get informed on list changes.
        personBindingSource.DataSource = _Persons;
        personBindingSource.ListChanged += (sender, e) => labelDataGridViewCount.Text = _Persons.Count.ToString();
    }

    private void OnBackgroundWorkerDoWork(object sender, DoWorkEventArgs e)
    {
        var spinner = new SpinWait();
        var worker = (BackgroundWorker)sender;

        // Should we abort our adding?
        while (!worker.CancellationPending)
        {
            // Create a new entry ...
            var person = new Person();

            person.Index = _Persons.Count;
            person.Born = new DateTime(_Random.Next(1950, 2012), _Random.Next(1, 13), _Random.Next(1, 28));
            person.FirstName = "Hello";
            person.LastName = "World";

            // ... and add it to the list
            _Persons.Add(person);

            // Do a little waiting ... (to avoid blowing out the list)
            for (int i = 0; i < _TimeoutBetweenInserts; i++)
            {
                spinner.SpinOnce();
            }

            spinner.Reset();
        }

    }

    private void OnBackgroundWorkerRunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
    {
        // Stop the gui updater, cause the background worker also stopped.
        timerGuiUpdater.Stop();
    }

    private void OnCheckBoxToggleWorkerCheckedChanged(object sender, EventArgs e)
    {
        // Update the "button" according to the state
        checkBoxToggleWorker.Text = checkBoxToggleWorker.Checked ? "&Pause" : "&Start";

        if (checkBoxToggleWorker.Checked)
        {
            if (!backgroundWorker.IsBusy)
            {
                // Start the gui updater and the background worker
                timerGuiUpdater.Start();
                backgroundWorker.RunWorkerAsync();
            }
        }
        else
        {
            // Stop the background worker
            backgroundWorker.CancelAsync();
        }
    }

    private void OnNumericUpDownTimeoutBetweenInsertsValueChanged(object sender, EventArgs e)
    {
        // Update the internal value, to let it propagate into the background worker
        _TimeoutBetweenInserts = (int)numericUpDownTimeoutBetweenInserts.Value;
    }

    private void OnTimerGuiUpdaterTick(object sender, EventArgs e)
    {
        // Tell the BindingSource it should inform its clients (the DataGridView)
        // to update itself
        personBindingSource.ResetBindings(false);
    }
}

让你在形式上进入所有这些领域,这里是设计者。

partial class FormMain
{
    /// <summary>
    /// Required designer variable.
    /// </summary>
    private System.ComponentModel.IContainer components = null;

    /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
    protected override void Dispose(bool disposing)
    {
        if (disposing && (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }

    #region Windows Form Designer generated code

    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
        this.components = new System.ComponentModel.Container();
        this.dataGridView = new System.Windows.Forms.DataGridView();
        this.Index = new System.Windows.Forms.DataGridViewTextBoxColumn();
        this.lastNameDataGridViewTextBoxColumn = new System.Windows.Forms.DataGridViewTextBoxColumn();
        this.firstNameDataGridViewTextBoxColumn = new System.Windows.Forms.DataGridViewTextBoxColumn();
        this.bornDataGridViewTextBoxColumn = new System.Windows.Forms.DataGridViewTextBoxColumn();
        this.ageDataGridViewTextBoxColumn = new System.Windows.Forms.DataGridViewTextBoxColumn();
        this.personBindingSource = new System.Windows.Forms.BindingSource(this.components);
        this.backgroundWorker = new System.ComponentModel.BackgroundWorker();
        this.labelDataGridViewCountText = new System.Windows.Forms.Label();
        this.labelDataGridViewCount = new System.Windows.Forms.Label();
        this.labelSpinsBetweenInsertsText = new System.Windows.Forms.Label();
        this.numericUpDownTimeoutBetweenInserts = new System.Windows.Forms.NumericUpDown();
        this.checkBoxToggleWorker = new System.Windows.Forms.CheckBox();
        this.timerGuiUpdater = new System.Windows.Forms.Timer(this.components);
        ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
        ((System.ComponentModel.ISupportInitialize)(this.personBindingSource)).BeginInit();
        ((System.ComponentModel.ISupportInitialize)(this.numericUpDownTimeoutBetweenInserts)).BeginInit();
        this.SuspendLayout();
        // 
        // dataGridView
        // 
        this.dataGridView.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
        | System.Windows.Forms.AnchorStyles.Left) 
        | System.Windows.Forms.AnchorStyles.Right)));
        this.dataGridView.AutoGenerateColumns = false;
        this.dataGridView.AutoSizeColumnsMode = System.Windows.Forms.DataGridViewAutoSizeColumnsMode.Fill;
        this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
        this.dataGridView.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
        this.Index,
        this.lastNameDataGridViewTextBoxColumn,
        this.firstNameDataGridViewTextBoxColumn,
        this.bornDataGridViewTextBoxColumn,
        this.ageDataGridViewTextBoxColumn});
        this.dataGridView.DataSource = this.personBindingSource;
        this.dataGridView.Location = new System.Drawing.Point(12, 12);
        this.dataGridView.Name = "dataGridView";
        this.dataGridView.Size = new System.Drawing.Size(560, 212);
        this.dataGridView.TabIndex = 0;
        // 
        // Index
        // 
        this.Index.AutoSizeMode = System.Windows.Forms.DataGridViewAutoSizeColumnMode.DisplayedCells;
        this.Index.DataPropertyName = "Index";
        this.Index.HeaderText = "Index";
        this.Index.Name = "Index";
        this.Index.Width = 58;
        // 
        // lastNameDataGridViewTextBoxColumn
        // 
        this.lastNameDataGridViewTextBoxColumn.DataPropertyName = "LastName";
        this.lastNameDataGridViewTextBoxColumn.HeaderText = "LastName";
        this.lastNameDataGridViewTextBoxColumn.Name = "lastNameDataGridViewTextBoxColumn";
        // 
        // firstNameDataGridViewTextBoxColumn
        // 
        this.firstNameDataGridViewTextBoxColumn.DataPropertyName = "FirstName";
        this.firstNameDataGridViewTextBoxColumn.HeaderText = "FirstName";
        this.firstNameDataGridViewTextBoxColumn.Name = "firstNameDataGridViewTextBoxColumn";
        // 
        // bornDataGridViewTextBoxColumn
        // 
        this.bornDataGridViewTextBoxColumn.AutoSizeMode = System.Windows.Forms.DataGridViewAutoSizeColumnMode.DisplayedCells;
        this.bornDataGridViewTextBoxColumn.DataPropertyName = "Born";
        this.bornDataGridViewTextBoxColumn.HeaderText = "Born";
        this.bornDataGridViewTextBoxColumn.Name = "bornDataGridViewTextBoxColumn";
        this.bornDataGridViewTextBoxColumn.Width = 54;
        // 
        // ageDataGridViewTextBoxColumn
        // 
        this.ageDataGridViewTextBoxColumn.AutoSizeMode = System.Windows.Forms.DataGridViewAutoSizeColumnMode.DisplayedCells;
        this.ageDataGridViewTextBoxColumn.DataPropertyName = "Age";
        this.ageDataGridViewTextBoxColumn.HeaderText = "Age";
        this.ageDataGridViewTextBoxColumn.Name = "ageDataGridViewTextBoxColumn";
        this.ageDataGridViewTextBoxColumn.ReadOnly = true;
        this.ageDataGridViewTextBoxColumn.Width = 51;
        // 
        // personBindingSource
        // 
        this.personBindingSource.DataSource = typeof(WindowsFormsApplication.Person);
        // 
        // backgroundWorker
        // 
        this.backgroundWorker.WorkerSupportsCancellation = true;
        this.backgroundWorker.DoWork += new System.ComponentModel.DoWorkEventHandler(this.OnBackgroundWorkerDoWork);
        this.backgroundWorker.RunWorkerCompleted += new System.ComponentModel.RunWorkerCompletedEventHandler(this.OnBackgroundWorkerRunWorkerCompleted);
        // 
        // labelDataGridViewCountText
        // 
        this.labelDataGridViewCountText.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
        this.labelDataGridViewCountText.Location = new System.Drawing.Point(12, 230);
        this.labelDataGridViewCountText.Name = "labelDataGridViewCountText";
        this.labelDataGridViewCountText.Size = new System.Drawing.Size(50, 23);
        this.labelDataGridViewCountText.TabIndex = 1;
        this.labelDataGridViewCountText.Text = "Count:";
        this.labelDataGridViewCountText.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
        // 
        // labelDataGridViewCount
        // 
        this.labelDataGridViewCount.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
        this.labelDataGridViewCount.Location = new System.Drawing.Point(68, 230);
        this.labelDataGridViewCount.Name = "labelDataGridViewCount";
        this.labelDataGridViewCount.Size = new System.Drawing.Size(82, 23);
        this.labelDataGridViewCount.TabIndex = 2;
        this.labelDataGridViewCount.Text = "0";
        this.labelDataGridViewCount.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
        // 
        // labelSpinsBetweenInsertsText
        // 
        this.labelSpinsBetweenInsertsText.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
        this.labelSpinsBetweenInsertsText.Location = new System.Drawing.Point(265, 230);
        this.labelSpinsBetweenInsertsText.Name = "labelSpinsBetweenInsertsText";
        this.labelSpinsBetweenInsertsText.Size = new System.Drawing.Size(155, 23);
        this.labelSpinsBetweenInsertsText.TabIndex = 3;
        this.labelSpinsBetweenInsertsText.Text = "Spins between inserts:";
        this.labelSpinsBetweenInsertsText.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
        // 
        // numericUpDownTimeoutBetweenInserts
        // 
        this.numericUpDownTimeoutBetweenInserts.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
        this.numericUpDownTimeoutBetweenInserts.Increment = new decimal(new int[] {
        10,
        0,
        0,
        0});
        this.numericUpDownTimeoutBetweenInserts.Location = new System.Drawing.Point(426, 233);
        this.numericUpDownTimeoutBetweenInserts.Maximum = new decimal(new int[] {
        500,
        0,
        0,
        0});
        this.numericUpDownTimeoutBetweenInserts.Minimum = new decimal(new int[] {
        10,
        0,
        0,
        0});
        this.numericUpDownTimeoutBetweenInserts.Name = "numericUpDownTimeoutBetweenInserts";
        this.numericUpDownTimeoutBetweenInserts.Size = new System.Drawing.Size(65, 20);
        this.numericUpDownTimeoutBetweenInserts.TabIndex = 4;
        this.numericUpDownTimeoutBetweenInserts.ThousandsSeparator = true;
        this.numericUpDownTimeoutBetweenInserts.Value = new decimal(new int[] {
        500,
        0,
        0,
        0});
        this.numericUpDownTimeoutBetweenInserts.ValueChanged += new System.EventHandler(this.OnNumericUpDownTimeoutBetweenInsertsValueChanged);
        // 
        // checkBoxToggleWorker
        // 
        this.checkBoxToggleWorker.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
        this.checkBoxToggleWorker.Appearance = System.Windows.Forms.Appearance.Button;
        this.checkBoxToggleWorker.Location = new System.Drawing.Point(497, 230);
        this.checkBoxToggleWorker.Name = "checkBoxToggleWorker";
        this.checkBoxToggleWorker.Size = new System.Drawing.Size(75, 23);
        this.checkBoxToggleWorker.TabIndex = 6;
        this.checkBoxToggleWorker.Text = "&Start";
        this.checkBoxToggleWorker.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
        this.checkBoxToggleWorker.UseVisualStyleBackColor = true;
        this.checkBoxToggleWorker.CheckedChanged += new System.EventHandler(this.OnCheckBoxToggleWorkerCheckedChanged);
        // 
        // timerGuiUpdater
        // 
        this.timerGuiUpdater.Tick += new System.EventHandler(this.OnTimerGuiUpdaterTick);
        // 
        // FormMain
        // 
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(584, 262);
        this.Controls.Add(this.checkBoxToggleWorker);
        this.Controls.Add(this.numericUpDownTimeoutBetweenInserts);
        this.Controls.Add(this.labelSpinsBetweenInsertsText);
        this.Controls.Add(this.labelDataGridViewCount);
        this.Controls.Add(this.labelDataGridViewCountText);
        this.Controls.Add(this.dataGridView);
        this.MinimumSize = new System.Drawing.Size(600, 300);
        this.Name = "FormMain";
        this.Text = "DataGridView Performance Tester";
        ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
        ((System.ComponentModel.ISupportInitialize)(this.personBindingSource)).EndInit();
        ((System.ComponentModel.ISupportInitialize)(this.numericUpDownTimeoutBetweenInserts)).EndInit();
        this.ResumeLayout(false);

    }

    #endregion

    private System.Windows.Forms.DataGridView dataGridView;
    private System.ComponentModel.BackgroundWorker backgroundWorker;
    private System.Windows.Forms.BindingSource personBindingSource;
    private System.Windows.Forms.Label labelDataGridViewCountText;
    private System.Windows.Forms.Label labelDataGridViewCount;
    private System.Windows.Forms.Label labelSpinsBetweenInsertsText;
    private System.Windows.Forms.NumericUpDown numericUpDownTimeoutBetweenInserts;
    private System.Windows.Forms.CheckBox checkBoxToggleWorker;
    private System.Windows.Forms.Timer timerGuiUpdater;
    private System.Windows.Forms.DataGridViewTextBoxColumn Index;
    private System.Windows.Forms.DataGridViewTextBoxColumn lastNameDataGridViewTextBoxColumn;
    private System.Windows.Forms.DataGridViewTextBoxColumn firstNameDataGridViewTextBoxColumn;
    private System.Windows.Forms.DataGridViewTextBoxColumn bornDataGridViewTextBoxColumn;
    private System.Windows.Forms.DataGridViewTextBoxColumn ageDataGridViewTextBoxColumn;
}

最后但并非最不重要的是,我用于有效载荷的几类人员:

public class Person
{
    public int Age
    {
        get
        {
            // ToDo: better algorithm to determine real age is left as an exercise to the reader. ;-)
            var age = (int)((DateTime.Now - Born).TotalDays / 365);
            return Math.Max(0, age);
        }
    }

    public DateTime Born { get; set; }

    public string FirstName { get; set; }

    public int Index { get; set; }

    public string LastName { get; set; }
}

您是否利用了一名背景工作者? 规定在多工作活动中要求冻结的法规:

 private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
 {
     YourFreezingCodeHere
 }

开始背景 工人

backgroundWorker1.RunWorkerAsync();

您可以使用BackgroundWorker 。 在<代码>DoWork方法中,你可以更新数据网。

同时,应当使用虚拟控制(特别是数据网)。 使用虚拟电网基本上意味着在飞机上安装可见的电池。 因此,你只需要更新目前显示的数据。 由于每个囚室都可见一斑,届时将进入数据模型,以获得循环值。 见,该链接作为实施虚拟电网的起点。

By combining these two approaches you should be able to minimise the amount of updates to the grid.

re: The problem is that the UI hangs when such an update happens because it has to happen on the main thread. Is there a known solution for this problem?

页: 1

一般而言,如果在申请没有冻结的情况下不断更新《国际不动产合同》,你如何设计在温Forms的高绩效企业申请?