TextBox.CharacterCasing 屬性

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

取得或設定 TextBox 控制項是否在輸入字元時修改字元的大小寫。

public:
 property System::Windows::Forms::CharacterCasing CharacterCasing { System::Windows::Forms::CharacterCasing get(); void set(System::Windows::Forms::CharacterCasing value); };

public System.Windows.Forms.CharacterCasing CharacterCasing { get; set; }

member this.CharacterCasing : System.Windows.Forms.CharacterCasing with get, set

Public Property CharacterCasing As CharacterCasing

屬性值

CharacterCasing

其中一個 CharacterCasing 列舉值，指定 TextBox 控制項是否修改字元的大小寫。 預設為 CharacterCasing.Normal。

例外狀況

InvalidEnumArgumentException

不在列舉型別 (Enumeration) 有效值範圍內的值會指派給這個屬性。

範例

下列程式碼範例會 TextBox 建立用來接受密碼的 控制項。 這個範例會 CharacterCasing 使用 屬性，將所有輸入為小寫的字元變更，而 MaxLength 屬性則會將密碼長度限制為八個字元。 這個範例也會使用 TextAlign 屬性將 控制項中的密碼置中 TextBox 。

public:
   void CreateMyPasswordTextBox()
   {
      // Create an instance of the TextBox control.
      TextBox^ textBox1 = gcnew TextBox;
      // Set the maximum length of text in the control to eight.
      textBox1->MaxLength = 8;
      // Assign the asterisk to be the password character.
      textBox1->PasswordChar = '*';
      // Change all text entered to be lowercase.
      textBox1->CharacterCasing = CharacterCasing::Lower;
      // Align the text in the center of the TextBox control.
      textBox1->TextAlign = HorizontalAlignment::Center;
   }

public void CreateMyPasswordTextBox()
 {
    // Create an instance of the TextBox control.
    TextBox textBox1 = new TextBox();
    // Set the maximum length of text in the control to eight.
    textBox1.MaxLength = 8;
    // Assign the asterisk to be the password character.
    textBox1.PasswordChar = '*';
    // Change all text entered to be lowercase.
    textBox1.CharacterCasing = CharacterCasing.Lower;
    // Align the text in the center of the TextBox control.
    textBox1.TextAlign = HorizontalAlignment.Center;
 }

Public Sub CreateMyPasswordTextBox()
    ' Create an instance of the TextBox control.
    Dim textBox1 As New TextBox()
    ' Set the maximum length of text in the control to eight.
    textBox1.MaxLength = 8
    ' Assign the asterisk to be the password character.
    textBox1.PasswordChar = "*"c
    ' Change all text entered to be lowercase.
    textBox1.CharacterCasing = CharacterCasing.Lower
    ' Align the text in the center of the TextBox control.
    textBox1.TextAlign = HorizontalAlignment.Center
End Sub

備註

您可以使用 CharacterCasing 屬性來變更應用程式所需的字元大小寫。 例如，您可以將用於密碼輸入之控制項中 TextBox 輸入的所有字元大小寫變更為大寫或小寫，以強制執行密碼的原則。

另請參閱

• CharacterCasing