Font.Size Font.Size Font.Size Font.Size Property

定義

取得這個 Font 的 Em 大小,此大小是以 Unit 屬性指定的單位來測量的。Gets the em-size of this Font measured in the units specified by the Unit property.

public:
 property float Size { float get(); };
public float Size { get; }
member this.Size : single
Public ReadOnly Property Size As Single

屬性值

這個 Font 的 Em 大小。The em-size of this Font.

範例

下列程式碼範例示範Font如何使用此函式Size和、 SizeInPointsUnit屬性。The following code example demonstrates how to use the Font constructor and the Size, SizeInPoints, and Unit properties. 這個範例是設計來搭配 Windows Form 使用, 其中包含ComboBoxComboBox1為的, 其已填入「大」和「較小」的字串。This example is designed to be used with a Windows Form that contains a ComboBox named ComboBox1 that is populated with the strings "Bigger" and "Smaller". 將下列程式碼貼入表單, 並將ComboBox1_SelectedIndexChanged方法與ComboBox控制項SelectedIndexChanged的事件產生關聯。Paste the following code into the form and associate the ComboBox1_SelectedIndexChanged method with the SelectedIndexChanged event of the ComboBox control.

private:
    void ComboBox1_SelectedIndexChanged(System::Object^ sender,
        System::EventArgs^ e)
    {

        // Cast the sender object back to a ComboBox.
        ComboBox^ ComboBox1 = (ComboBox^) sender;

        // Retrieve the selected item.
        String^ selectedString = (String^) ComboBox1->SelectedItem;

        // Convert it to lowercase.
        selectedString = selectedString->ToLower();

        // Declare the current size.
        float currentSize;

        // If Bigger is selected, get the current size from the 
        // Size property and increase it. Reset the font to the
        //  new size, using the current unit.
        if (selectedString == "bigger")
        {
            currentSize = Label1->Font->Size;
            currentSize += 2.0F;
            Label1->Font =gcnew System::Drawing::Font(Label1->Font->Name, 
                currentSize, Label1->Font->Style, Label1->Font->Unit);

        }
        // If Smaller is selected, get the current size, in
        // points, and decrease it by 2.  Reset the font with
        // the new size in points.
        if (selectedString == "smaller")
        {
            currentSize = Label1->Font->Size;
            currentSize -= 2.0F;
            Label1->Font = gcnew System::Drawing::Font(Label1->Font->Name, 
                currentSize, Label1->Font->Style);

        }
    }
private void ComboBox1_SelectedIndexChanged(System.Object sender, 
    System.EventArgs e)
{

    // Cast the sender object back to a ComboBox.
    ComboBox ComboBox1 = (ComboBox) sender;

    // Retrieve the selected item.
    string selectedString = (string) ComboBox1.SelectedItem;

    // Convert it to lowercase.
    selectedString = selectedString.ToLower();

    // Declare the current size.
    float currentSize;

    // Switch on the selected item. 
    switch(selectedString)
    {

            // If Bigger is selected, get the current size from the 
            // Size property and increase it. Reset the font to the
            //  new size, using the current unit.
        case "bigger":
            currentSize = Label1.Font.Size;
            currentSize += 2.0F;
            Label1.Font = new Font(Label1.Font.Name, currentSize, 
                Label1.Font.Style, Label1.Font.Unit);

            // If Smaller is selected, get the current size, in points,
            // and decrease it by 1.  Reset the font with the new size
            // in points.
            break;
        case "smaller":
            currentSize = Label1.Font.SizeInPoints;
            currentSize -= 1;
            Label1.Font = new Font(Label1.Font.Name, currentSize, 
                Label1.Font.Style);
            break;
    }
}
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged

    ' Cast the sender object back to a ComboBox.
    Dim ComboBox1 As ComboBox = CType(sender, ComboBox)

    ' Retrieve the selected item.
    Dim selectedString As String = CType(ComboBox1.SelectedItem, String)

    ' Convert it to lowercase.
    selectedString = selectedString.ToLower()

    ' Declare the current size.
    Dim currentSize As Single

    ' Switch on the selected item. 
    Select Case selectedString

        ' If Bigger is selected, get the current size from the 
        ' Size property and increase it. Reset the font to the
        '  new size, using the current unit.
    Case "bigger"
            currentSize = Label1.Font.Size
            currentSize += 2.0F
            Label1.Font = New Font(Label1.Font.Name, currentSize, _
                Label1.Font.Style, Label1.Font.Unit)

            ' If Smaller is selected, get the current size, in points,
            ' and decrease it by 1.  Reset the font with the new size
            ' in points.
        Case "smaller"
            currentSize = Label1.Font.SizeInPoints
            currentSize -= 1
            Label1.Font = New Font(Label1.Font.Name, currentSize, _
                Label1.Font.Style)
    End Select
End Sub

適用於