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ITextControl Interface

Defines the interface a control implements to get or set its text content.

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

public interface ITextControl

The ITextControl type exposes the following members.

  NameDescription
Public propertyTextGets or sets the text content of a control.
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The ITextControl interface defines the Text property a control implements to allow the getting or setting of its text content. The Text property can be set programmatically or through user input.

Caution noteCaution

A control implementing this interface can be used to display user input. Before displaying user input, the input must be checked for malicious client script, such as executable script or SQL statements. ASP.NET provides an input request validation feature to block script and HTML in user input. Validation server controls are also provided to assess user input. For more information, see Validation Server Control Syntax.

The following code example shows a custom control that implements the [T:System.Web.UI.]ITextControl interface. A default value is assigned to the Text property if null is passed to the property.


public class CustomTextControl : Control, ITextControl
{
    private string _text;

	public CustomTextControl()
	{
	}

    public string Text
    {
        get
        {
            return _text;
        }
        set
        {
            if (value != null)
            {
                _text = value;
            }
            else
            {
                _text = "No Value.";
            }
        }
    }

    // Provide the remaining code to implement a text control.
}

.NET Framework

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

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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