列表框单元格仅在滚动之后更新-Listboxcellsgetupdatedonlybeyondthescroll

I have a simple listview, with a grid control. I have bound an object to the grid using observablecollection. inotifyPropertyChanged is implemented on the setter.

我有一个简单的列表视图,带有网格控件。我使用observablecollection将对象绑定到网格。 inotifyPropertyChanged在setter上实现。

The grid has three columns. On a button click I load the grid with some rows of data in two columns. Then the user clicks on another button, and i add some text in the third column in the grid too. Problem is that this new text gets displayed in the grid on only those rows which are not currently on screen. If I scroll down and up, the rest get loaded too as soon as they leave the screen area beyond the scroll.

网格有三列。在按钮上单击我加载网格,在两列中包含一些数据行。然后用户点击另一个按钮,我也在网格的第三列中添加一些文本。问题是这个新文本只在那些当前不在屏幕上的行中显示在网格中。如果我向下和向上滚动,其余的一旦离开屏幕区域超出滚动就会加载。

This might be a starter question, but I have tried various permutations of my code, and have searched and read articles but none helped.

这可能是一个启动性的问题,但我尝试了各种代码的排列,并搜索和阅读文章,但没有帮助。

XAML

On button click on screen, the below gets called

在按钮上单击屏幕,将调用以下内容

private void DelFiles(ObservableCollection files)
        {

            foreach (FileItem fi in files)
            {
                try
                {
                    fi.Status = "Deleted";
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.InnerException);
                    fi.Status = "Error Deleting";
                }
            }
        }

And here is the FileItem class

这是FileItem类

class FileItem : INotifyPropertyChanged
    {

        public const string NamePropertyName = "CheckBoxState";

        private bool _checkboxstate = true;

        public string Name { get; set; }
        public string Status { get; set; }
        public bool IsSelected
        {
            get
            {
                return _checkboxstate;
            }
            set
            {
                if (_checkboxstate == value)
                {
                    return;
                }
                _checkboxstate = value;
                OnPropertyChanged(NamePropertyName);
            }


        }
        public event PropertyChangedEventHandler PropertyChanged;
        protected void OnPropertyChanged(string propertyName)
        {
            if (this.PropertyChanged != null)
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
    }

1 个解决方案

class FileItem : INotifyPropertyChanged
    {

        public const string NamePropertyName = "CheckBoxState";

        private bool _checkboxstate = true;

        public string Name { get; set; }

        string _status;     
        public string Status 
        { 
            get { return _status; } 
            set { _status = value; OnPropertyChanged("Status"); } 
        }

        public bool IsSelected
        {
            get
            {
                return _checkboxstate;
            }
            set
            {
                if (_checkboxstate == value)
                {
                    return;
                }
                _checkboxstate = value;
                OnPropertyChanged(NamePropertyName);
            }


        }
        public event PropertyChangedEventHandler PropertyChanged;
        protected void OnPropertyChanged(string propertyName)
        {
            if (this.PropertyChanged != null)
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
    }