将数据表绑定到listview wpf mvvm

Question

我已经尝试了几乎所有在stackoverflow上提供的soulutions,似乎无法让它工作.我是wpf和mvvm的新手,并试图将数据表绑定到listview,下面是我的代码.

//code for viewmodel
public DataTable RetrieveDetails
        {

            get
            {
                DataTable users = new DataTable();
                string dataBaseName = "name.db3";
                using (SQLiteConnection connection = new SQLiteConnection("Data Source=" + dataBaseName + "; Version=3;"))
                {                    
                    var details = "SELECT * FROM users";                    
                    connection.Open();
                    SQLiteCommand cmd = new SQLiteCommand(details, connection);
                    cmd.ExecuteNonQuery();
                    SQLiteDataAdapter adapter = new SQLiteDataAdapter(details, connection);
                    adapter.SelectCommand.CommandTimeout = 120;
                    DataSet ds = new DataSet();
                    adapter.Fill(ds);
                    return ds.Tables[0];

                }
            }

        }

下面是我如何将数据表绑定到列表视图

<ListView x:Name="FormOneView" ItemsSource="{Binding Path=RetrieveDetails}">
                            <ListView.View>
                            <GridView>
                                <GridViewColumn DisplayMemberBinding="{Binding FirstName}" Header="First Name" />
                            </GridView>
                            </ListView.View>
                        </ListView>

我知道这应该是简单的,但我很难显示数据.

Answer 1

试试这种方法:

<ListView x:Name="FormOneView" ItemsSource="{Binding}" DataContext="{Binding Path=allData}" HorizontalAlignment="Left" Height="100" Margin="243,289,0,0" VerticalAlignment="Top" Width="191">
    <ListView.View>
        <GridView>
            <GridViewColumn Header="Time" Width="50" DisplayMemberBinding="{Binding Path=Tid}"/>
            <GridViewColumn Header="Acceleration" Width="70" DisplayMemberBinding="{Binding Path=Acceleration}"/>
        </GridView>
    </ListView.View>
</ListView>

在这个XAML中,我给你一个带有两列的数据表的例子.我使用DisplayMemberBinding将ListView列绑定到我的sql表列标题.

您的backgournd代码实际上很好,但您需要使用propertyChangedEventHandler绑定ListView的DataContext.以下是如何进行此类绑定的示例:

在方法中添加以下两行:

adapter.Fill(ds, "users");
allData = ds.Tables["users"].DefaultView; 

然后在您的类中添加以下方法.您的类应该继承INotifyPeropertyChanged(yourClassName:INotifyPeropertyChanged),否则它将无效.

private DataView _allData;
public DataView allData
{
    get { return _allData; }
    set
    {
        if (value != _allData)
        {
            _allData = value;
            OnPropertyChanged("allData");
        }
    }
}

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

结果: