C# 按名称查找 WPF 控件
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Find WPF control by Name
提问by user3357963
I'm after some help finding the best way to refer to controls that have been programmtically built in C#
我正在寻求一些帮助，以找到引用在 C# 中以编程方式构建的控件的最佳方法
If I pre include a label in XAML and name it marketInfothen in code I can set the Tagproperty with something like
如果我在 XAML 中预先包含一个标签并命名它marketInfo然后在代码中我可以Tag用类似的东西设置属性
marketInfo.Tag = timeNow;
However, I'm building controls and assigning each a name using something similar to
但是，我正在构建控件并使用类似于
System.Windows.Controls.Label lbl = new System.Windows.Controls.Label();
lbl.Content = market.name + " - " + DateTime.Now.ToLocalTime().ToLongTimeString();
lbl.HorizontalContentAlignment = System.Windows.HorizontalAlignment.Left;
lbl.Height = 40;
lbl.Name = @"_" + "marketInfo" + countMarket;
How do I refer to these controls from another method? I've read a few posts which suggest using the visualtreehelperbut this appears to require looping controls to find a particular control. Is there a way to access a control by name to avoid looping?
我如何从另一种方法中引用这些控件？我已经阅读了一些建议使用 的帖子，visualtreehelper但这似乎需要循环控件才能找到特定控件。有没有办法按名称访问控件以避免循环？
eg something similar to
例如类似的东西
//pseudo code
SomeControl("_marketInfo5").Tag = timeNow;
Thank you
谢谢
采纳答案by Kevin Gosse
There's at least two ways to do that:
至少有两种方法可以做到这一点：
Use the
FindNamemethod of the parent container to find the control (but it'll internally involve looping, like the visualtreehelper)Create a dictionary to store a reference for each control you create
var controls = new Dictionary<string, FrameworkElement>(); controls.Add("_marketInfo5", lbl);Then you can do:
controls["_marketInfo5"].Tag = timeNow;
使用
FindName父容器的方法来查找控件（但它内部会涉及循环，如visualtreehelper）创建一个字典来存储您创建的每个控件的引用
var controls = new Dictionary<string, FrameworkElement>(); controls.Add("_marketInfo5", lbl);然后你可以这样做：
controls["_marketInfo5"].Tag = timeNow;
回答by mehdi
You can use XamlQuery for finding your controls at run-time.XamlQuery In CodePlex
您可以使用 XamlQuery 在运行时查找控件。CodePlex 中的 XamlQuery
XamlQuery.Search(RegisterGrid, "Label[Name=_marketInfo5]").SetValue(Control.TagProperty, timeNow);
