c#如何处理多动态创建按钮的事件

时间:2010-09-05 09:48:43

标签: c# winforms events button handler

我创建了一个WinForm并添加了动态按钮,我如何处理它的事件

public static void Notify()
{

    var line = 3;

    Form fm = new Form();
    fm.Text = "Hello!";
    fm.ShowInTaskbar = false;
    fm.ShowIcon = false;
    fm.MinimizeBox = false;
    fm.MaximizeBox = false;
    fm.FormBorderStyle = FormBorderStyle.FixedToolWindow;
    fm.TopMost = true;
    fm.ClientSize = new Size(150, 75 * line/2);
    Rectangle workingArea = Screen.PrimaryScreen.WorkingArea;
    int left = workingArea.Width - fm.Width-5;
    int top = workingArea.Height - fm.Height-4;
    fm.Location = new Point(left, top);
    fm.StartPosition = FormStartPosition.Manual;

    var buttomArray = new Button[line];

    for (int i = 0; i < line; i++)
    {
        buttomArray[i] = new Button();
        buttomArray[i].Text = "Button " + (i + 1);
        buttomArray[i].Location = new Point(10,30*(i+1) - 16);
        buttomArray[i].Size = new Size(130,25);
        fm.Controls.AddRange(new Control[] { buttomArray[i] });
    }

    fm.Show();
}

当我点击不同的按钮时,我希望能够做一些不同的事情(也许我可以使用“名称”作为标识符?)

欢呼声

2 个答案:

答案 0 :(得分:4)

只需指定Click处理程序:

for (int i = 0; i < 10; i++)
{
    var btn = new Button();
    btn.Text = "Button " + i;
    btn.Location = new Point(10, 30 * (i + 1) - 16);
    btn.Click += (sender, args) =>
    {
        // sender is the instance of the button that was clicked
        MessageBox.Show(((Button)sender).Text + " was clicked");
    };
    Controls.Add(btn);
}

答案 1 :(得分:3)

订阅Button.Click事件。当您处于创建循环中时,将要在单击处理程序中使用的数据附加到Tag属性。

for (int i = 0; i < line; i++) 
    { 
        buttomArray[i] = new Button(); 
        buttomArray[i].Tag=i;
    .....

在点击处理程序中,发件人将是Button(您可以投射到它),标签将包含您的值。

Button btn=(Button)sender;
int value=(int)btn.Tag;

Tag-property接受任何类型。因此,您可以附加任何值。