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ComboBox.DataSource Property

Gets or sets the data source for this ComboBox.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public Object DataSource { get; set; }

Property Value

Type: System.Object
An object that implements the IList interface or an Array. The default is null.

A data source can be a database, a Web service, or an object that can later be used to generate data-bound controls. When the DataSource property is set, the items collection cannot be modified.

The following example uses the DataSource property to display an array of weekdays in a ComboBox.

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);
        }
    }
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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