DataTemplate中的事件处理程序 [英] Event handler in DataTemplate
问题描述
任何建议?
我已经通过使用通常的事件处理程序解决了我的问题,树,找到相应的按钮并调用它的命令。
如果有人有同样的问题,请发表评论,并提供更多的实现细节。
UPD / p>
这是我的解决方案:
我在视觉树中搜索一个按钮,而不是执行与按钮相关的命令。
View.xaml:
< ComboBox KeyDown =ComboBox_KeyDown />
< Button Command ={Binding AddResourceCommand}/>
View.xaml.cs:
private void ComboBox_KeyDown(object sender,KeyEventArgs e)
{
if(e.Key == Key.Enter)
{
var parent = VisualTreeHelper.GetParent((DependencyObject)sender);
int childrenCount = VisualTreeHelper.GetChildrenCount(parent);
for(int i = 0; i< childrenCount; i ++)
{
var child = VisualTreeHelper.GetChild(parent,i)as Button;
if(null!= child)
{
child.Command.Execute(null);
}
}
}
}
I have WPF ComboBox inside a data template (a lot of comboboxes in listbox) and I want to handle enter button. It would be easy if it was e.g. a button - I would use Command + Relative binding path etc. Unfortunately, I have no idea how handle key press with a Command or how to set event handler from template. Any suggestions?
I've solved my problem by using a usual event handler where I walk through the visual tree, find corresponding button and call it's command. If anybody else has the same problem, please post a comment and I'll provide more details of realization.
UPD
Here is my solution:
I search the visual tree for a button and than execute command associated with button.
View.xaml:
<ComboBox KeyDown="ComboBox_KeyDown"/>
<Button Command="{Binding AddResourceCommand}"/>
View.xaml.cs:
private void ComboBox_KeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.Enter)
{
var parent = VisualTreeHelper.GetParent((DependencyObject)sender);
int childrenCount = VisualTreeHelper.GetChildrenCount(parent);
for (int i = 0; i < childrenCount; i++)
{
var child = VisualTreeHelper.GetChild(parent, i) as Button;
if (null != child)
{
child.Command.Execute(null);
}
}
}
}
这篇关于DataTemplate中的事件处理程序的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!