ToolStrip.BeginDrag Olay

Tanım

Kullanıcı denetimi sürüklemeye ToolStrip başladığında gerçekleşir.

C#
public event EventHandler BeginDrag;
C#
public event EventHandler? BeginDrag;

Olay Türü

Örnekler

Aşağıdaki kod örneğinde BeginDrag ve EndDrag ile kullanımı ToolStripToolStripContainergösterilmektedir.

C#
using System;
using System.Windows.Forms;

public class Form1 : Form
{
    private ToolStripContainer toolStripContainer1;
    private ToolStrip toolStrip1;
    private RichTextBox richTextBox1;
 
    public Form1()
    {
        DragToolStrip();
    }
    [STAThread]
    static void Main()
        {
            Application.EnableVisualStyles();
            Application.Run(new Form1());
        }

        private void DragToolStrip()
        {
        // Create a ToolStripContainer.
        toolStripContainer1 = new System.Windows.Forms.ToolStripContainer();
        toolStripContainer1.Dock = System.Windows.Forms.DockStyle.Fill;
        Controls.Add(toolStripContainer1);

        // Create a ToolStrip and add items to it.
        toolStrip1 = new System.Windows.Forms.ToolStrip();
        toolStrip1.Items.Add("One");
        toolStrip1.Items.Add("Two");
        toolStrip1.Items.Add("Three");
            
        // Add the ToolStrip to the top panel of the ToolStripContainer.
        toolStripContainer1.TopToolStripPanel.Controls.Add(toolStrip1);
            
        // Create a RichTextBox and add it to the ContentPanel.
        richTextBox1 = new System.Windows.Forms.RichTextBox();
        richTextBox1.Location = new System.Drawing.Point(94, 61);
        toolStripContainer1.ContentPanel.Controls.Add(richTextBox1);

        // Attach event handlers for the BeginDrag and EndDrag events.
        toolStrip1.BeginDrag += new System.EventHandler(toolStrip1_BeginDrag);
        toolStrip1.EndDrag += new System.EventHandler(toolStrip1_EndDrag);
    }
    // Clear any text from the RichTextBox when a drag operation begins.
    private void toolStrip1_BeginDrag(object sender, EventArgs e)
    {
        richTextBox1.Text = "";
    }
    // Notify the user when the drag operation ends.
    private void toolStrip1_EndDrag(object sender, EventArgs e)
    {
        richTextBox1.Text="The drag operation is complete.";
    }
}

Açıklamalar

Olayları işleme hakkında daha fazla bilgi için bkz. Olayları İşleme ve Oluşturma.

Şunlara uygulanır

Ürün Sürümler
.NET Framework 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9, 10