TextBox.Multiline TextBox.Multiline TextBox.Multiline TextBox.Multiline Property

定义

获取或设置一个值,该值指示这是否为多行 TextBox 控件。Gets or sets a value indicating whether this is a multiline TextBox control.

public:
 virtual property bool Multiline { bool get(); void set(bool value); };
public override bool Multiline { get; set; }
member this.Multiline : bool with get, set
Public Overrides Property Multiline As Boolean

属性值

如果控件为多行 TextBox 控件,则为 true;否则为 falsetrue if the control is a multiline TextBox control; otherwise, false. 默认值为 falseThe default is false.

示例

下面的代码示例创建多行TextBox具有垂直滚动条控件。The following code example creates a multiline TextBox control with vertical scroll bars. 此示例使用AcceptsTabAcceptsReturn,和WordWrap属性,以使多行文本框控件可用于创建文本文档。This example uses the AcceptsTab, AcceptsReturn, and WordWrap properties to make the multiline text box control useful for creating text documents.

public:
   void CreateMyMultilineTextBox()
   {
      // Create an instance of a TextBox control.
      TextBox^ textBox1 = gcnew TextBox;
      
      // Set the Multiline property to true.
      textBox1->Multiline = true;
      // Add vertical scroll bars to the TextBox control.
      textBox1->ScrollBars = ScrollBars::Vertical;
      // Allow the RETURN key to be entered in the TextBox control.
      textBox1->AcceptsReturn = true;
      // Allow the TAB key to be entered in the TextBox control.
      textBox1->AcceptsTab = true;
      // Set WordWrap to true to allow text to wrap to the next line.
      textBox1->WordWrap = true;
      // Set the default text of the control.
      textBox1->Text = "Welcome!";
   }
public void CreateMyMultilineTextBox()
 {
    // Create an instance of a TextBox control.
    TextBox textBox1 = new TextBox();
       
    // Set the Multiline property to true.
    textBox1.Multiline = true;
    // Add vertical scroll bars to the TextBox control.
    textBox1.ScrollBars = ScrollBars.Vertical;
    // Allow the RETURN key to be entered in the TextBox control.
    textBox1.AcceptsReturn = true;
    // Allow the TAB key to be entered in the TextBox control.
    textBox1.AcceptsTab = true;
    // Set WordWrap to true to allow text to wrap to the next line.
    textBox1.WordWrap = true;
    // Set the default text of the control.
    textBox1.Text = "Welcome!";
 }
 
Public Sub CreateMyMultilineTextBox()
    ' Create an instance of a TextBox control.
    Dim textBox1 As New TextBox()
    
    ' Set the Multiline property to true.
    textBox1.Multiline = True
    ' Add vertical scroll bars to the TextBox control.
    textBox1.ScrollBars = ScrollBars.Vertical
    ' Allow the RETURN key to be entered in the TextBox control.
    textBox1.AcceptsReturn = True
    ' Allow the TAB key to be entered in the TextBox control.
    textBox1.AcceptsTab = True
    ' Set WordWrap to true to allow text to wrap to the next line.
    textBox1.WordWrap = True
    ' Set the default text of the control.
    textBox1.Text = "Welcome!"
End Sub

注解

AutoCompleteSource 不适用于多行TextBox控件。AutoCompleteSource does not work on multiline TextBox controls.

当更改字体时,不会不会显示已定义任何缩进。When the font is changed, any indentation that you have defined does not appear. 若要获取缩进,请设置Multilinetrue并重写而不会调用类的基类,以便不会调用 SETMARGINS WM_SETFONT。To get indentation, set Multiline to true and override WM_SETFONT without calling the base class so that SETMARGINS is not called.

适用于