在纯 XAML 中创建 WPF 水印 [英] Create WPF Watermark in Pure XAML
问题描述
这是用于登录屏幕上的 TextBox 控件，其中 TextBox 包含用户名.我希望 TextBox 以下列方式执行:
This is for a TextBox control on a login screen, where the TextBox contains the username. I want the TextBox to perform in the following way:
当内容为空时，内容应设置为用户名".
When the content is empty the content should be set to "Username".
当单击 TextBox 时，我希望将内容设置为"IE;什么都没有(除非用户已经编辑了内容).
When the TextBox is clicked I want the content to be set to "" i.e; nothing (unless the content has already been edited by the user).
这是当今非常标准的功能，类似于wordpress login(在页面顶部).恐怕没有比这更好的例子了:)
This is a pretty standard feature nowadays, something like this wordpress login (at the top of page). coudn't think of a better example than this I'm afraid :)
所以，无论如何，我已经使用 ViewModel 完成了此操作，并且效果很好，但我想知道这是否可以完全从 XAML 端完成.不关心业务逻辑，所以我认为没有 VM 会更好.
So, anyway, I've already done this using a ViewModel and it works well, but I'd like to know if this can be done purely from the XAML end. No business logic is concerned so I think it would be better to do it without the VM.
推荐答案
查找以下示例可帮助您找到方法.
Find the below samples help you to find your way.
http://bendewey.wordpress.com/2008/09/27/wpf-shadowed-textbox-watermark/
http://www.c-sharpcorner.com/uploadfile/rahul4_saxena/watermark-textbox-in-wpf/
http://www.codeproject.com/Articles/26977/A-WatermarkTextBox-in-3-lines-of-XAML
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