像往常一样,我做了一些研究,但在网站或其他地方找不到答案。如果您能指出我现有的问题,我将不胜感激。否则,这是一个问题:
我有一个ListView
对象绑定到一个DataTable
对象。请参阅以下定义:
<ListView Name="MyList">
<ListView.View>
<GridView>
<GridViewColumn x:Name="Column1Name" DisplayMemberBinding="{Binding Path=Column1}" />
<GridViewColumn x:Name="Column2Name" DisplayMemberBinding="{Binding Path=Column2}" />
<GridViewColumn x:Name="Column3Name" DisplayMemberBinding="{Binding Path=Column3}" />
<GridViewColumn x:Name="Column4Name" DisplayMemberBinding="{Binding Path=Column4}" />
</GridView>
</ListView.View>
</ListView>
绑定代码如下:
DataTable items = new DataTable();
items = DatabaseService.GetMyItems(20, true, items);
Binding binding = new Binding();
binding.Source = items.DefaultView;
binding.Mode = BindingMode.OneWay;
MyList.SetBinding(ListView.ItemsSourceProperty, binding);
执行查询的实际代码如下:
/** Parameters: commandText = <sql>, table = items */
using (DbConnection connection = new SqlConnection(Project.Properties.Settings.Default.ConnectionString))
{
using (DbCommand command = connection.CreateCommand())
{
command.CommandText = commandText;
command.CommandType = CommandType.Text;
using (DbDataAdapter dataAdapter = new SqlDataAdapter())
{
dataAdapter.SelectCommand = command;
dataAdapter.Fill(table);
}
}
}
此代码第一次工作,但是当我GetMyItems
在数据更改后再次调用该方法时,数据不会刷新。
我究竟做错了什么?