ControlValuePropertyAttribute Class

When defining a ControlParameter object, you typically bind a control's property to a parameter by setting both the ControlID and PropertyName properties. If the PropertyName property is not set, a default property is used. The ControlValuePropertyAttribute attribute is applied to a control to specify its default property that a ControlParameter object binds to at run time.

For more information about using attributes, see Extending Metadata Using Attributes.

For a list of initial property values for an instance of the ControlValuePropertyAttribute class, see the ControlValuePropertyAttribute constructor.

The following code example demonstrates how to apply a ControlValuePropertyAttribute attribute that specifies a default property and value to a custom control.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace Samples.AspNet.CS.Controls
{
    // Set ControlValueProperty attribute to specify the default 
    // property of this control that a ControlParameter object  
    // binds to at run time.
    [DefaultProperty("Text")]
    [ControlValueProperty("Text", "Default Text")]
    public class SimpleCustomControl : WebControl
    {
        private string text;

        [Bindable(true)]
        [Category("Appearance")]
        [DefaultValue("")]
        public string Text
        {
            get
            {
                return text;
            }
            set
            {
                text = value;
            }
        }

        protected override void Render(HtmlTextWriter output)
        {
            output.Write(Text);
        }
    }
}

.NET Framework

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.

Reference