DataRepeater.LayoutStyleChanged 事件

發行項
08/21/2008

更新：2007 年 11 月

發生於 LayoutStyle 屬性值變更時。

命名空間： Microsoft.VisualBasic.PowerPacks
組件： Microsoft.VisualBasic.PowerPacks.Vs (在 Microsoft.VisualBasic.PowerPacks.Vs.dll 中)

語法

Public Event LayoutStyleChanged As EventHandler

Dim instance As DataRepeater
Dim handler As EventHandler

AddHandler instance.LayoutStyleChanged, handler

public event EventHandler LayoutStyleChanged

public:
 event EventHandler^ LayoutStyleChanged {
    void add (EventHandler^ value);
    void remove (EventHandler^ value);
}

JScript 不支援事件。

備註

DataRepeater 控制項的 LayoutStyle 屬性會決定是以垂直格式還是水平格式顯示 DataRepeater 項目。當這個屬性變更時，您可以使用 LayoutStyleChanged 事件處理常式重新排列 ItemTemplate 中的子控制項，以配合新的配置。

如需如何處理事件的詳細資訊，請參閱使用事件。

範例

下列範例顯示如何在事件處理常式中回應 LayoutStyleChanged 事件。這個範例要求您的表單必須有一個名為 DataRepeater1 的 DataRepeater 控制項，而且這個控制項必須包含兩個名為 TextBox1 和 TextBox2 的 TextBox 控制項。

Private Sub DataRepeater1_LayoutStyleChanged(ByVal sender As Object, _
 ByVal e As System.EventArgs) Handles DataRepeater1.LayoutStyleChanged
    ' Call a method to re-initialize the template.
    DataRepeater1.BeginResetItemTemplate()
    If DataRepeater1.LayoutStyle = _
     PowerPacks.DataRepeaterLayoutStyles.Vertical Then
        ' Change the height of the template and rearrange the controls.
        DataRepeater1.ItemTemplate.Height = 150
        DataRepeater1.ItemTemplate.Controls(TextBox1.Name).Location = _
         New Point(20, 40)
        DataRepeater1.ItemTemplate.Controls(TextBox2.Name).Location = _
         New Point(150, 40)
    Else
        ' Change the width of the template and rearrange the controls.
        DataRepeater1.ItemTemplate.Width = 150
        DataRepeater1.ItemTemplate.Controls(TextBox1.Name).Location = _
         New Point(40, 20)
        DataRepeater1.ItemTemplate.Controls(TextBox2.Name).Location = _
         New Point(40, 150)
    End If
    ' Apply the changes to the template.
    DataRepeater1.EndResetItemTemplate()
End Sub

private void dataRepeater1_LayoutStyleChanged_1(object sender, EventArgs e)
{
    // Call a method to re-initialize the template.
    dataRepeater1.BeginResetItemTemplate();
    if (dataRepeater1.LayoutStyle == DataRepeaterLayoutStyles.Vertical)
    // Change the height of the template and rearrange the controls.
    {
        dataRepeater1.ItemTemplate.Height = 150;
        dataRepeater1.ItemTemplate.Controls["TextBox1"].Location = new Point(20, 40);
        dataRepeater1.ItemTemplate.Controls["TextBox2"].Location = new Point(150, 40);
    }
    else
    {
        // Change the width of the template and rearrange the controls.
        dataRepeater1.ItemTemplate.Width = 150;
        dataRepeater1.ItemTemplate.Controls["TextBox1"].Location = new Point(40, 20);
        dataRepeater1.ItemTemplate.Controls["TextBox2"].Location = new Point(40, 150);
    }
    // Apply the changes to the template.
    dataRepeater1.EndResetItemTemplate();
}