Question

我找到了如何使用以下代码从列表视图中删除项目：

var video = document.getElementById("myVideo");
var prevBuffer = {
    "buffer": null,
    "time": null
};
var isBuffering = function(){

    if(video && video.buffered && video.buffered.end && video.buffered.length > 0){
        var buffer = video.buffered.end(0);
        var time   = video.currentTime;

        // Check if the video hangs because of issues with e.g. performance
        if(prevBuffer.buffer === buffer && prevBuffer.time === time && !video.paused){
            return true;
        }
        prevBuffer = {
            "buffer": buffer,
            "time": time
        };
        // Check if video buffer is less
        // than current time (tolerance 3 sec)
        if((buffer - 3) < time){
            return true;
        }
    }
    return false;

};
video.addEventListener("play", function(e){
    // Make sure this handler is only called once
    e.target.removeEventListener(e.type, arguments.callee);
    // Give browsers 3secs time to buffer
    setTimeout(function(){
        // As "progress", "stalled" or "waiting" aren't fired
        // reliable, we need to use an interval
        var interval = setInterval(function(){
            if(isBuffering()){
                clearInterval(interval);
                console.log("Buffering");
            }
        }, 500);
    }, 3000);
});

但正如您在每次输入添加到private void buttonDelete_Click(object sender, EventArgs e) { if (listViewStudents.SelectedItems != null) { foreach (ListViewItem eachItem in listViewStudents.SelectedItems) { listViewStudents.Items.Remove(eachItem); ClearandFocus(); } } }时在下面的代码中看到的那样，它也会被添加到带有ListView

的集合列表中

Repository.AddStudent(student)

我想要实现的目标如下：每次点击删除按钮时，我希望在列表视图和列表中删除所选项目。我已经完成了几次尝试，但似乎无法完成这项工作，我想知道这是否可行？

Answer 1

同步两个列表并非易事，不建议这样做。

请考虑将您的学生列表设为ObservableCollection<>，并将其设置为ItemsSource的{{1}}。集合中的更改将反映在您ListView中。

从C＃中删除ListView和List中的项目

1 个答案: