遍历stackPanel.children [英] Loop through stackPanel.children genericaly

问题描述

在代码中，我正在动态添加要循环浏览的控件（例如TextBox，ComboBox，Label等），并从用户输入数据的每个适用控件（例如非Labels）中获取值。

In code I am dynamically adding controls (e.g. TextBox, ComboBox, Label, etc) that I would like to now loop through and get the values from each applicable (e.g. not Labels) control that a user inputted data for.

        foreach (Control control in EditForm.Children)
        {
            values = new List<string>();
            fieldName = control.Name;

            if (control is ComboBox)
            {
                ComboBox cmb = control as ComboBox;

                string value = cmb.SelectedValue.ToString();
            }
         }

问题是我在运行时出错

无法将类型为 System.Windows.Controls.TextBlock的对象转换为类型为 System.Windows.Controls的
。

Unable to cast object of type 'System.Windows.Controls.TextBlock' to type 'System.Windows.Controls.Control'.

是否应该使用更通用的类代替 Control？我该如何遍历每个控件并访问所需的值（包括控件的名称）

Is there a more generic class I should be using instead of 'Control'? How can I loop through each control and have access to the needed values (includes the control's Name)

推荐答案

UIElement最多可能是一个安全的选择。

"UIElement" is most likely a safe choice.

如果您只对特定类型的元素感兴趣，还可以考虑使用Linq按类类型过滤元素（别忘了包括使用System.Linq指令）：

If you're only interested elements of a specific type, you can also consider using Linq to filter out elements by class type (don't forget to include a "using System.Linq" directive):

foreach (ComboBox combo in EditForm.Children.OfType<ComboBox>())
{
   //...
}

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