TextBoxBase.AppendText(String) メソッド

定義

テキスト ボックスの現在のテキストにテキストを追加します。Appends text to the current text of a text box.

public:
 void AppendText(System::String ^ text);
public void AppendText (string text);
member this.AppendText : string -> unit
Public Sub AppendText (text As String)

パラメーター

text
String

テキスト ボックスの現在の内容に追加するテキスト。The text to append to the current contents of the text box.

次のコード例では、メソッドとプロパティを使用して、 AppendText TextLength 1 つのから別のにテキストをコピーする方法を示し TextBox ます。The following code example demonstrates how to use the AppendText method and the TextLength property to copy text from one TextBox to another. この例 TextBox では、とという名前の2つのコントロールが textBox1 textBox2 フォームに追加され、その textBox1 プロパティにテキストが割り当てられている必要があり Text ます。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

注釈

このメソッドを使用すると、連結演算子 (+) を使用してテキストをプロパティに連結する代わりに、コントロール内の既存のテキストにテキストを追加できます TextYou can use this method to add text to the existing text in the control instead of using the concatenation operator (+) to concatenate text to the Text property.

適用対象

こちらもご覧ください