TextBoxBase.TextLength Propiedad

Definición

Obtiene la longitud del texto en el control.Gets the length of text in the control.

public:
 virtual property int TextLength { int get(); };
[System.ComponentModel.Browsable(false)]
public virtual int TextLength { get; }
member this.TextLength : int
Public Overridable ReadOnly Property TextLength As Integer

Valor de propiedad

Número de caracteres contenidos en el texto del control.The number of characters contained in the text of the control.

Atributos

Ejemplos

En el ejemplo de código siguiente se muestra cómo AppendText usar el método TextLength y la propiedad para copiar texto TextBox de uno a otro.The following code example demonstrates how to use the AppendText method and the TextLength property to copy text from one TextBox to another. Este ejemplo requiere que se TextBox hayan agregado dos textBox1 controles textBox2denominados, y, a un formulario y textBox1 que tenga texto asignado a Text su propiedad.This example requires that two TextBox controls named, textBox1 and textBox2, have been added to a form and that textBox1 has text assigned to its Text property.

void AppendTextBox1Text()
{
   // Determine if text is selected in textBox1.
   if ( textBox1->SelectionLength == 0 )

   // No selection made, return.
   return;

   // Determine if the text being appended to textBox2 exceeds the MaxLength property.
   if ( (textBox1->SelectedText->Length + textBox2->TextLength) > textBox2->MaxLength )
         MessageBox::Show( "The text to paste in is larger than the maximum number of characters allowed" ); // Append the text from textBox1 into textBox2.
   else
         textBox2->AppendText( textBox1->SelectedText );
}
private void AppendTextBox1Text()
{
   // Determine if text is selected in textBox1.
   if(textBox1.SelectionLength == 0)
      // No selection made, return.
      return;
   
   // Determine if the text being appended to textBox2 exceeds the MaxLength property.
   if((textBox1.SelectedText.Length + textBox2.TextLength) > textBox2.MaxLength)
      MessageBox.Show("The text to paste in is larger than the maximum number of characters allowed");
   else
      // Append the text from textBox1 into textBox2.
      textBox2.AppendText(textBox1.SelectedText);
}
Private Sub AppendTextBox1Text()
   ' Determine if text is selected in textBox1.
   If textBox1.SelectionLength = 0 Then
      ' No selection made, return.
      Return
   End If
   ' Determine if the text being appended to textBox2 exceeds the MaxLength property.
   If textBox1.SelectedText.Length + textBox2.TextLength > textBox2.MaxLength Then
      MessageBox.Show("The text to paste in is larger than the maximum number of characters allowed")
      ' Append the text from textBox1 into textBox2.
   Else
      textBox2.AppendText(textBox1.SelectedText)
   End If
End Sub

Comentarios

Puede usar esta propiedad para determinar el número de caracteres de una cadena para tareas como la búsqueda de cadenas específicas de texto dentro del texto del control, donde se necesita conocer el número total de caracteres.You can use this property to determine the number of characters in a string for tasks such as searching for specific strings of text within the text of the control, where knowledge of the total number of characters is needed.

Se aplica a

Consulte también: