UpDownBase.Text Properti

Definisi

Ruang nama:

System.Windows.Forms

Rakitan:

System.Windows.Forms.dll

Mendapatkan atau mengatur teks yang ditampilkan dalam kotak putar (juga dikenal sebagai kontrol naik turun).

public:
 virtual property System::String ^ Text { System::String ^ get(); void set(System::String ^ value); };

public override string Text { get; set; }

member this.Text : string with get, set

Public Overrides Property Text As String

Nilai Properti

String

Nilai string ditampilkan dalam kotak putar.

Contoh

Contoh kode berikut menggunakan kelas NumericUpDownturunan . Kode ini mengharuskan NumericUpDown kontrol dan Button telah dibuat pada formulir dan System.Drawing namespace telah ditambahkan sebagai referensi. Click Pada peristiwa untuk tombol , ukuran titik teks dalam NumericUpDown kontrol meningkat. Ini meminta kontrol untuk menyesuaikan propertinya PreferredHeight sehingga semua teks terlihat dalam kontrol. Setelah pengguna memasukkan nilai baru dan meninggalkan NumericUpDown kontrol, teks dikonversi menjadi nilai numerik dari nilai string dan divalidasi menjadi antara Minimum nilai dan Maximum . Jika nilai tidak valid, MessageBox ditampilkan dengan kesalahan, dan Select metode akan memilih teks sehingga pengguna dapat memasukkan nilai baru.

void numericUpDown1_Leave( Object^ /*sender*/, EventArgs^ /*e*/ )
{
   /* If the entered value is greater than Minimum or Maximum,
         select the text and open a message box. */
   if ( (System::Convert::ToInt32( numericUpDown1->Text ) > numericUpDown1->Maximum) || (System::Convert::ToInt32( numericUpDown1->Text ) < numericUpDown1->Minimum) )
   {
      MessageBox::Show( "The value entered was not between the Minimum andMaximum allowable values.\nPlease re-enter." );
      numericUpDown1->Focus();
      numericUpDown1->Select(0,numericUpDown1->Text->Length);
   }
}

void button1_Click( Object^ /*sender*/, EventArgs^ /*e*/ )
{
   int varPrefHeight1;
   
   /* Capture the PreferredHeight before and after the Font
         is changed, and display the results in a message box. */
   varPrefHeight1 = numericUpDown1->PreferredHeight;
   numericUpDown1->Font = gcnew System::Drawing::Font( "Microsoft Sans Serif",12.0,System::Drawing::FontStyle::Bold );
   MessageBox::Show( String::Format( "Before Font Change: {0}\nAfter Font Change: {1}", varPrefHeight1, numericUpDown1->PreferredHeight ) );
}

private void numericUpDown1_Leave(Object sender,
                                  EventArgs e)
{
   /* If the entered value is greater than Minimum or Maximum,
      select the text and open a message box. */
   if((System.Convert.ToInt32(numericUpDown1.Text) > numericUpDown1.Maximum) ||
      (System.Convert.ToInt32(numericUpDown1.Text) < numericUpDown1.Minimum))
   {
      MessageBox.Show("The value entered was not between the Minimum and" +
         "Maximum allowable values." + "\n" + "Please re-enter.");
      numericUpDown1.Focus();
      numericUpDown1.Select(0, numericUpDown1.Text.Length);
   }
}
   
private void button1_Click(Object sender,
                           EventArgs e)
{
   int varPrefHeight1;
   
   /* Capture the PreferredHeight before and after the Font
      is changed, and display the results in a message box. */
   varPrefHeight1 = numericUpDown1.PreferredHeight;
   numericUpDown1.Font = new System.Drawing.Font("Microsoft Sans Serif",
      12F, System.Drawing.FontStyle.Bold);
   MessageBox.Show("Before Font Change: " + varPrefHeight1.ToString() +
      "\n" + "After Font Change: " + numericUpDown1.PreferredHeight.ToString());
}

Private Sub numericUpDown1_Leave(sender As Object, e As EventArgs)
    ' If the entered value is greater than Minimum or Maximum,
    ' select the text and open a message box. 
    If (System.Convert.ToInt32(numericUpDown1.Text) > numericUpDown1.Maximum) Or _
        (System.Convert.ToInt32(numericUpDown1.Text) < numericUpDown1.Minimum) Then
        MessageBox.Show("The value entered was not between the Minimum and " & _
            "Maximum allowable values." & Microsoft.VisualBasic.ControlChars.Cr & _
            "Please re-enter.")
        numericUpDown1.Focus()
        numericUpDown1.Select(0, numericUpDown1.Text.Length)
    End If
End Sub    

Private Sub button1_Click(sender As Object, e As EventArgs)
    Dim varPrefHeight1 As Integer
    
    ' Capture the PreferredHeight before and after the Font
    ' is changed, and display the results in a message box. 
    varPrefHeight1 = numericUpDown1.PreferredHeight
    numericUpDown1.Font = New System.Drawing.Font("Microsoft Sans Serif", _
        12F, System.Drawing.FontStyle.Bold)
    MessageBox.Show("Before Font Change: " & varPrefHeight1.ToString() & _
        Microsoft.VisualBasic.ControlChars.Cr & "After Font Change: " & _
        numericUpDown1.PreferredHeight.ToString())
End Sub

Keterangan

Metode UpdateEditText ini dipanggil jika Text properti diatur saat UserEdit properti diatur ke true. Metode ValidateEditText ini dipanggil jika Text properti diatur saat UserEdit properti diatur ke false.

Lihat juga

• UserEdit
• UpdateEditText()
• ValidateEditText()