如何在窗口关闭时将CancelEventArgs发送到viewmodel？我尝试了以下方法，但CloseWindow命令方法始终接收CancelEventArgs参数为null。如何以棱镜方式获取CancelEventArgs viewmodel？
<!-- View-->
<interactivity:Interaction.Triggers>
<interactivity:EventTrigger EventName="Closing">
<interactivity:InvokeCommandAction Command="{Binding CloseWindowCommand}" />
</interactivity:EventTrigger>
</interactivity:Interaction.Triggers>
视图模型
CloseWindowCommand = DelegateCommand<CancelEventArgs>.FromAsyncHandler(CloseWindow);
public async Task CloseWindow(CancelEventArgs args)
{
//Do Stuff
}
答案 0 :(得分：1)
你应该使用Prism自己的<?php
$subtil=$_GET['subtil1'];
$til=$_GET['til1'];
$files = glob("images/image/$til/$subtil/*.*");
$count=count($files);
for ($i=0; $i<$count; $i++)
{
echo "<div class='pitem entry item-w1 item-h1' style='padding: 15px;'>";
$image = $files[$i];
echo "<img src='".$image."' class='img-responsive' style='padding:20px;border:1px solid black;'>"."";
echo "<br>";
echo"<span style='float: center;padding-top: 10px;'><button type='submit' onclick='myFunction()' name='submit' value='Send' class='btn btn-primary'>Delete</button></span>";
$detatil="delete.php?image=$image&til=$til&subtil=$subtil";
//echo $detatil;
echo "</div>";
?>
<script>
function myFunction() {
var r=confirm("Do you want to leave page!");
if (r)
{
//write redirection code
window.location = "<?php echo$detatil?>";
}
else
{
//do nothing
} //document.getElementById("demo").innerHTML = txt;
}
</script>
<?php
}//for loop end
?>
类：
InvokeCommandAction属于Blend SDK的xmlns:prism="http://prismlibrary.com/"
...
<interactivity:Interaction.Triggers>
<interactivity:EventTrigger EventName="Closing">
<prism:InvokeCommandAction Command="{Binding CloseWindowCommand}" />
</interactivity:EventTrigger>
</interactivity:Interaction.Triggers>
类不支持将InvokeCommandAction作为命令参数传递。