Question

所以我有这个代码块，我有一个名为AddNewButton的按钮，它将一个StackPanel添加到一个名为MainStackPanel的已创建的StackPanel中，这个不相关但是＆＃34; GroupPanel＆＃34;具有子控件，例如＆＃34; GroupName＆＃34;，＆＃34; GroupTextBox＆＃34;和＆＃34; GroupEdit＆＃34;。

现在＆＃34; GroupEdit＆＃34;按钮有一个click事件，它运行名为＆＃34; GroupEdit_Click＆＃34;的void。在那个虚空中，我使用Button GroupEdit1 = sender as Button;现在这可以使我能够访问按钮属性并更改内容但我的问题是：如何访问其他控件，例如＆＃34; GroupPanel＆＃34;，＆＃34;组名＆＃34;和＆＃34; GroupTextBox＆＃34;。我将使用AddNewButton几次，所以当我访问单独的控件时，他们需要单独访问

我试图摆脱不必要的代码。

private void AddNewButton_Click(object sender, RoutedEventArgs e)
{
     StackPanel GroupPanel = new StackPanel();

     TextBlock GroupName = new TextBlock();
     GroupName.Text = "Group ";

     TextBox GroupTextBox = new TextBox();
     GroupTextBox.Visibility = Visibility.Collapsed;

     Button GroupEdit = new Button();
     GroupEdit.Content = "Edit Group";
     GroupEdit.Click += new RoutedEventHandler(GroupEdit_Click);

     GroupPanel.Children.Add(GroupName);
     GroupPanel.Children.Add(GroupTextBox);
     GroupPanel.Children.Add(GroupEdit);
}

private void GroupEdit_Click(object sender,RoutedEventArgs e)
{
     Button GroupEdit1 = sender as Button;
     GroupEdit1.Content = "Done";
     //Now how do i access these controls?
     GroupName.Visibility = Visibility.Collapsed;
     GroupTextBox.Visibility = Visibility.Visible;
     }
}

Answer 1

您可以维护动态添加的GroupEdit控件的私有List，并为它们分配编号标记。

private List<TextBox> dynamicGroupEdits = new List<TextBox>();

private void AddNewButton_Click(object sender, RoutedEventArgs e)
{
    ...
    dynamicGroupEdits.Add(GroupEdit);

    GroupEdit.Tag = dynamicGroupEdits.Count;
    GroupPanel.Tag = GroupEdit.Tag;
    GroupTextBox.Tag = GroupEdit.Tag;
    ...
}

private void GroupEdit_Click(object sender,RoutedEventArgs e)
{
    ...
    tag = GroupEdit1.Tag;
    // Loop through all child controls and set visibility according to tag
    for each (var c in LogicalTreeHelper.GetChildren(GroupEdit1.Parent)
    {
        if(c is TextBox && c.Tag == tag) 
            c.Visible =Visibility.Visible;
        else if(c is TextBlock && c.Tag == tag) 
            c.Visibility = Visibility.Collapsed;
     }
}

如何在运行时编辑在C＃中创建的控件？

1 个答案: