小编use*_*666的帖子

我想关闭按钮添加到TabPages的TabControl.我尝试这个代码,它适用于从左到右TabControl:

private Point _imageLocation = new Point(13, 5);
private Point _imgHitArea = new Point(13, 2);

this.tabControl2.DrawMode = System.Windows.Forms.TabDrawMode.OwnerDrawFixed;

tabControl2.DrawItem += TabControl2_DrawItem;

private void TabControl2_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{
    try
    {
        Image img = new Bitmap(GestionP.Properties.Resources.Close);
        Rectangle r = e.Bounds;
        r = this.tabControl2.GetTabRect(e.Index);
        r.Offset(2, 2);
        Brush TitleBrush = new SolidBrush(Color.Black);
        Font f = this.Font;
        string title = this.tabControl2.TabPages[e.Index].Text;
        e.Graphics.DrawString(title, f, TitleBrush, new PointF(r.X, r.Y));

        if (tabControl2.SelectedIndex >= 1)
        {
            e.Graphics.DrawImage(img, new Point(r.X + (this.tabControl2.GetTabRect(e.Index).Width - _imageLocation.X), _imageLocation.Y)); …

如何将 RightToLeft 属性设置为 DatagridviewCell？我试图设置

Alignment 属性为“MiddleRight”，但由于我的 DatagridviewCell 值为

阿拉伯语和英语从右到左没有按照我想要的方式显示。

我想在ASP.NET C#中访问CrystalReportViewer的Print事件(当我单击CrystalReportViewer的Print按钮时),怎么样？

如何将十进制数(例如2.5)转换为年和月(2年和6个月)并将其添加到给定日期？我试过了DateTime.TryParse,但没用.

我想更改TabPage标题右侧未使用空间的颜色.

我试图覆盖OnPaintBackground窗口的方法,它正在工作,这是我使用的代码:

protected override void OnPaintBackground(PaintEventArgs e)
{
    base.OnPaintBackground(e);
    Rectangle lasttabrect = tabControl1.GetTabRect(tabControl1.TabPages.Count - 1);
    RectangleF emptyspacerect = new RectangleF(
            lasttabrect.X + lasttabrect.Width + tabControl1.Left,
            tabControl1.Top + lasttabrect.Y,
            tabControl1.Width - (lasttabrect.X + lasttabrect.Width),
            lasttabrect.Height);

    Brush b = Brushes.BlueViolet; // the color you want
    e.Graphics.FillRectangle(b, emptyspacerect);
}

但是因为我在我的TabPages中添加了一个关闭按钮并且我使用了

`tabControl1.DrawMode = TabDrawMode.OwnerDrawFixed` 

我改变了 tabControl1_DrawItem

上面的代码对我不起作用.

我创建了一个Windows Forms应用程序以ping ip地址列表，然后使用a Timer来每秒钟重复一次ping 30。这是我使用的代码：

private System.Timers.Timer timer;

    public Form1()
    {
        InitializeComponent();

        timer = new System.Timers.Timer();
        timer.Interval = 30000;
        timer.Enabled = true;
        timer.Elapsed += button1_Click;

    }

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
        pingResults.Clear();
        ipAddress.Add("10.100.1.1");
        ipAddress.Add("10.100.1.2");
        ipAddress.Add("10.100.1.3");
        ipAddress.Add("10.100.1.4");
        ipAddress.Add("10.100.1.5");
        ipAddress.Add("10.100.1.100");

        for (int i = 1; i < 7; i++)
        {
            pictureBoxList.Add((PictureBox)Controls.Find("pictureBox" + i, true)[0]);
        }

        Parallel.For(0, ipAddress.Count(), (i, loopState) =>
        {
            Ping ping = new Ping();
            PingReply pingReply = ping.Send(ipAddress[i].ToString());

            this.BeginInvoke((Action)delegate()
            {
                pictureBoxList[i].BackColor = (pingReply.Status == …