DataRepeater.LayoutStyleChanged 事件

2008-09-04

更新：2007 年 11 月

当 LayoutStyle 属性值更改时发生。

命名空间： Microsoft.VisualBasic.PowerPacks
程序集： Microsoft.VisualBasic.PowerPacks.Vs（在 Microsoft.VisualBasic.PowerPacks.Vs.dll 中）

语法

声明
Public Event LayoutStyleChanged As EventHandler
用法
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 不支持事件。

备注

DataRepeater 控件的 LayoutStyle 属性决定是按照垂直格式还是按照水平格式显示 DataRepeater 项。当此属性更改时，可以使用 LayoutStyleChanged 事件处理程序来重新排列 ItemTemplate 中的子控件以适合新的布局。

有关如何处理事件的更多信息，请参见使用事件。

示例

下面的示例演示如何在事件处理程序中响应 LayoutStyleChanged 事件。此示例要求您在窗体上有一个名为 DataRepeater1 的 DataRepeater 控件，且该控件包含两个名称分别为 TextBox1 和 TextBox2 的 TextBox 控件。

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();
}