ITextControl ITextControl ITextControl ITextControl Interface


定義控制項要實作的介面,以取得或設定其文字內容。Defines the interface a control implements to get or set its text content.

public interface class ITextControl
public interface ITextControl
type ITextControl = interface
Public Interface ITextControl


下列程式碼範例顯示的自訂控制項會ITextControl執行介面。The following code example shows a custom control that implements the ITextControl interface. Text 如果null傳遞至屬性, 則會將預設值指派給屬性。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
            return _text;
            if (value != null)
                _text = value;
                _text = "No Value.";

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

Public Class CustomTextControl
    Inherits System.Web.UI.Control
    Implements System.Web.UI.ITextControl

    Private _text As String

    Public Property Text() As String Implements System.Web.UI.ITextControl.Text
            Return _text
        End Get
        Set(ByVal value As String)
            If (value <> Nothing) Then
                _text = value
                _text = "No Value."
            End If
        End Set
    End Property

    ' Provide the remaining code to implement a text control.
End Class


介面會定義控制項Text所實行的屬性, 以允許其文字內容的取得或設定。 ITextControlThe ITextControl interface defines the Text property a control implements to allow the getting or setting of its text content. Text屬性可以用程式設計方式或透過使用者輸入來設定。The Text property can be set programmatically or through user input.


執行此介面的控制項可以用來顯示使用者輸入。A control implementing this interface can be used to display user input. 在顯示使用者輸入之前, 必須檢查輸入是否有惡意用戶端腳本, 例如可執行檔腳本或 SQL 語句。Before displaying user input, the input must be checked for malicious client script, such as executable script or SQL statements. ASP.NET 提供輸入要求驗證功能, 以封鎖使用者輸入中的腳本和 HTML。ASP.NET provides an input request validation feature to block script and HTML in user input. 也會提供驗證服務器控制項來評估使用者輸入。Validation server controls are also provided to assess user input. 如需詳細資訊, 請參閱驗證服務器控制項語法For more information, see Validation Server Control Syntax.


Text Text Text Text

取得或設定控制項的文字內容。Gets or sets the text content of a control.