C# DomainUpDown.SelectedIndex属性代码示例

protected DomainUpDown domainUpDown1;

private void MySub()
 {
    // Create and initialize the DomainUpDown control.
    domainUpDown1 = new System.Windows.Forms.DomainUpDown();
    
    // Add the DomainUpDown control to the form.
    Controls.Add(domainUpDown1);
 }
 
 private void button1_Click(System.Object sender, 
                           System.EventArgs e)
 {   
    // Add the text box contents and initial location in the collection
    // to the DomainUpDown control.
    domainUpDown1.Items.Add((textBox1.Text.Trim()) + " - " + myCounter);
    
    // Increment the counter variable.
    myCounter = myCounter + 1;
 
    // Clear the TextBox.
    textBox1.Text = "";
 }
 
 private void checkBox1_Click(System.Object sender, 
                             System.EventArgs e)
 {
    // If Sorted is set to true, set it to false; 
    // otherwise set it to true.
    if (domainUpDown1.Sorted)
    {
       domainUpDown1.Sorted = false;
    }
    else
    {
       domainUpDown1.Sorted = true;
    }
 }
 
 private void domainUpDown1_SelectedItemChanged(System.Object sender, 
                                               System.EventArgs e)
 {
    // Display the SelectedIndex and SelectedItem property values in a MessageBox.
    MessageBox.Show("SelectedIndex: " + domainUpDown1.SelectedIndex.ToString() 
       + "\n" + "SelectedItem: " + domainUpDown1.SelectedItem.ToString());
 }

//引入命名空间
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

    public class UpDown : System.Windows.Forms.Form
    {
      private System.Windows.Forms.Button button2;
      private System.Windows.Forms.TextBox textBox1;
      private System.Windows.Forms.Button button1;
      private System.Windows.Forms.DomainUpDown UPDOWN_DOMAIN;
      private System.Windows.Forms.Label label1;
        public UpDown()
        {
         this.button2 = new System.Windows.Forms.Button();
         this.textBox1 = new System.Windows.Forms.TextBox();
         this.button1 = new System.Windows.Forms.Button();
         this.UPDOWN_DOMAIN = new System.Windows.Forms.DomainUpDown();
         this.label1 = new System.Windows.Forms.Label();
         this.SuspendLayout();
         this.button2.Location = new System.Drawing.Point(136, 80);
         this.button2.Text = "Add Item";
         this.textBox1.Location = new System.Drawing.Point(24, 80);
         this.textBox1.Text = "";
         this.button1.Location = new System.Drawing.Point(264, 40);
         this.button1.Size = new System.Drawing.Size(64, 23);
         this.button1.Text = "Remove";
         this.UPDOWN_DOMAIN.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(255)), ((System.Byte)(192)), ((System.Byte)(192)));
         this.UPDOWN_DOMAIN.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
         this.UPDOWN_DOMAIN.ForeColor = System.Drawing.SystemColors.HotTrack;
         this.UPDOWN_DOMAIN.Location = new System.Drawing.Point(24, 40);
         this.UPDOWN_DOMAIN.Name = "UPDOWN_DOMAIN";
         this.UPDOWN_DOMAIN.Size = new System.Drawing.Size(232, 26);
         this.UPDOWN_DOMAIN.Sorted = true;
         this.UPDOWN_DOMAIN.TabIndex = 5;
         this.UPDOWN_DOMAIN.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
         this.UPDOWN_DOMAIN.UpDownAlign = System.Windows.Forms.LeftRightAlignment.Left;
         this.UPDOWN_DOMAIN.Wrap = true;
         this.label1.Location = new System.Drawing.Point(24, 16);
         this.label1.Size = new System.Drawing.Size(136, 23);
         this.label1.TabIndex = 9;
         this.label1.Text = "UpDownDomain Control";
         this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
         this.ClientSize = new System.Drawing.Size(344, 117);
         this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                      this.label1,
                                                                      this.UPDOWN_DOMAIN,
                                                                      this.button1,
                                                                      this.button2,
                                                                      this.textBox1});
         this.Name = "UpDown";
         this.Text = "UpDownDomain Control";
         this.Load += new System.EventHandler(this.UpDown_Load);
         this.ResumeLayout(false);

      }
        static void Main() 
        {
            Application.Run(new UpDown());
        }

        private void UpDown_Load(object sender, System.EventArgs e)
        {
            UPDOWN_DOMAIN.Items.Add("Visual C#");
            UPDOWN_DOMAIN.Items.Add("Visual C++");
            UPDOWN_DOMAIN.Items.Add("Visual VB");
            UPDOWN_DOMAIN.Items.Add("Managed C++");
            UPDOWN_DOMAIN.Items.Add("Crystal Reports");
            UPDOWN_DOMAIN.Items.Add("MFC");
            UPDOWN_DOMAIN.Items.Add("ATL");
            UPDOWN_DOMAIN.Items.Add("COM");
            UPDOWN_DOMAIN.Items.Add("DCOM");
            UPDOWN_DOMAIN.Items.Add("COM+");
            UPDOWN_DOMAIN.Items.Add("SETUP");
            UPDOWN_DOMAIN.Items.Add("COMMAND LINE");
            UPDOWN_DOMAIN.Items.Add("WINDOWS SERVICE");
            UPDOWN_DOMAIN.Items.Add("WINDOWS LIBRARY");
            UPDOWN_DOMAIN.Items.Add("ASP .NET WEB");
            UPDOWN_DOMAIN.Items.Add("DATABASE APPLICATION");

        }

        private void button1_Click(object sender, System.EventArgs e)
        {
            int nItemSel = UPDOWN_DOMAIN.SelectedIndex;
            if ( nItemSel >= 0 ) 
            {
                UPDOWN_DOMAIN.Items.RemoveAt(nItemSel);
                UPDOWN_DOMAIN.Update();
                UPDOWN_DOMAIN.Text = "" ; 
            }
        }

        private void button2_Click(object sender, System.EventArgs e)
        {
            if ( textBox1.Text == "" ) 
            {
                MessageBox.Show("Enter a string to add");
                return ;
            }
            UPDOWN_DOMAIN.Items.Add(textBox1.Text);
            textBox1.Text = "" ; 
        }
    }