ComboBox.DataSource 屬性

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

取得或設定這個 ComboBox 的資料來源。

public:
 property System::Object ^ DataSource { System::Object ^ get(); void set(System::Object ^ value); };

public object DataSource { get; set; }

member this.DataSource : obj with get, set

Public Property DataSource As Object

屬性值

Object

實作 IList 介面的物件，或是 Array。 預設為 null。

範例

下列範例會 DataSource 使用 屬性，在 中 ComboBox 顯示工作日的陣列。

using System.Windows.Forms;

namespace ComboBox_DataSource_Sample
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            // Initialize an array with data to bind to the combo box.
            var daysOfWeek =
                new[] { "Monday", "Tuesday", "Wednesday", 
                        "Thursday", "Friday", "Saturday", 
                        "Sunday" };

            // Initialize combo box
            var comboBox = new ComboBox
                                {
                                    DataSource = daysOfWeek,
                                    Location = new System.Drawing.Point(12, 12),
                                    Name = "comboBox",
                                    Size = new System.Drawing.Size(166, 21),
                                    DropDownStyle = ComboBoxStyle.DropDownList
                                };

            // Add the combo box to the form.
            this.Controls.Add(comboBox);
        }
    }
}

Imports System.Windows.Forms

Public Class Form1
    Inherits System.Windows.Forms.Form

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) _
            Handles MyBase.Load

        Dim comboBox As New ComboBox
        Dim daysOfWeek As String() = _
            New String() {"Monday", "Tuesday", "Wednesday", _
                          "Thursday", "Friday", "Saturday", _
                          "Sunday"}

        With comboBox
            .DataSource = daysOfWeek
            .Location = New System.Drawing.Point(12, 12)
            .Name = "comboBox"
            .Size = New System.Drawing.Size(166, 21)
            .DropDownStyle = ComboBoxStyle.DropDownList
        End With

        Me.Controls.Add(comboBox)
    End Sub

End Class

備註

資料來源可以是資料庫、Web 服務，或稍後可用來產生資料繫結控制項的物件。 DataSource設定 屬性時，無法修改 items 集合。