ControlValuePropertyAttribute.DefaultValue Property

 

Gets the default value for the default property of a control.

Namespace:   System.Web.UI
Assembly:  System.Web (in System.Web.dll)

public object DefaultValue { get; }

Property Value

Type: System.Object

The default value for the default property of a control.

When the property specified by the Name property is not set, use the DefaultValue property to determine the default value for the property.

The following code example demonstrates how to set the DefaultValue property by applying a ControlValuePropertyAttribute attribute 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
Available since 2.0
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