wpf 在事件 Keydown 中获取发件人文本框名称
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Get Sender TextBox Name in Event Keydown
提问by Samarth Agarwal
I am working on an application using WPF and C#. On a window I have number of textBoxes arranged in a grid of 5 columns and rows as many as user needs. It works like this: Initially the 1st row of 5 textBoxes is visible, the user enters appropriate values and as soon as he hits ENTERin the 5th textBox of the row, a new similar row of textBoxes is generated for newer entries. This keep on happening. Each textBox has a unique name using RegisterNamemethod and loop.
我正在使用 WPF 和 C# 开发一个应用程序。在一个窗口上，我根据用户需要将多个文本框排列在 5 列和行的网格中。它是这样工作的：最初ENTER5 个文本框的第一行是可见的，用户输入适当的值，一旦他点击该行的第 5 个文本框，就会为较新的条目生成一个新的类似文本框行。这种情况一直在发生。每个文本框都有一个唯一的使用RegisterName方法和循环的名称。
Now my problem is that suppose I have already created 5 rows with around 25 textBoxes on window. I focus on one of the textBoxes of the 3rd row and type something that fires it appropriate KeyDown Event. In this keydown event, I need the Nameof all the textBox that caused this event. How can I do that?
现在我的问题是假设我已经在窗口上创建了大约 25 个文本框的 5 行。我专注于第 3 行的文本框之一，并键入一些内容来触发它适当的 KeyDown 事件。在此 keydown 事件中，我需要导致此事件的所有文本框的名称。我怎样才能做到这一点？
This, being done, will also help me to access all the other textBoxes of that row as I know the nomenclature using which they are named. Please help.
这样做后，也将帮助我访问该行的所有其他文本框，因为我知道它们被命名的命名法。请帮忙。
采纳答案by Viv
You can try something like:
您可以尝试以下操作：
Note we also set the Nameproperty along with the FrameworkContentElement.RegisterNamefunction.
请注意，我们还将该Name属性与FrameworkContentElement.RegisterName函数一起设置。
var box = new TextBox();
var itemName = "Unique Identifier"; // Change this to your unique name per box
this.RegisterName(itemName, box);
box.Name = itemName;
box.KeyDown += (sender, args) => {
var textBox = sender as TextBox;
if (textBox != null)
MessageBox.Show(textBox.Name); // Would show "Unique Identifier"
};
回答by Shafqat Masood
hi please use this event for the TextBox
嗨，请将此事件用于 TextBox
TextBox_PreviewKeyDown(object sender, KeyEventArgs e)
and get the id of the textboxes use sender parameter with combination with the Tag.
并使用 sender 参数与 Tag 组合获取文本框的 id。
i.e. TextBox textbox = (TextBox)sender;
