当IList绑定到数据网格时,我遇到了一个问题。
班级结构是,
public class Customer
{
public virtual int CustomerID { get; set; }
public virtual string Name { get; set; }
public virtual string AddressLine1 { get; set; }
public virtual string AddressLine2 { get; set; }
public virtual string AddressLine3 { get; set; }
public virtual bool IsActive { get; set; }
public virtual SalesLine SalesLine { get; set; }
public virtual int Precedence { get; set; }
}
public class SalesLine
{
public virtual int SalesLineID { get; set; }
public virtual string Name { get; set; }
public virtual SalesPerson SalesPerson { get; set; }
public virtual IList<Customer> Customers { get; set; }
}
我创建了一个新的Customer类IList。
IList<Customer> customerList = new IList<Customer>();
然后填充“customerList”。 由于客户拥有SalesLine,因此“salesLines”IList将填充数据库中的所有销售线。
现在使用以下XAML,我将把customerList绑定到datagrid,
<DataGrid AutoGenerateColumns="False" Grid.Column="1" Grid.Row="1" HorizontalAlignment="Stretch"
Name="grdCustomers" VerticalAlignment="Stretch" Grid.ColumnSpan="2"
ItemsSource="{Binding CustomerList}" CanUserAddRows="True">
<DataGrid.Columns>
<DataGridTextColumn Header="Name" Binding="{Binding Name}" Width="250" />
<DataGridTextColumn Header="Address Street" Binding="{Binding AddressLine1}" Width="150" />
<DataGridTextColumn Header="Address Town" Binding="{Binding AddressLine2}" Width="150" />
<DataGridTextColumn Header="Address Area" Binding="{Binding AddressLine3}" Width="150" />
<DataGridCheckBoxColumn Header="Is Active" Binding="{Binding IsActive}" Width="75" />
<DataGridComboBoxColumn Header="Sales Line" Width="150"
SelectedItemBinding="{Binding SalesLine}"
SelectedValuePath="SalesLineID"
DisplayMemberPath="Name">
<DataGridComboBoxColumn.ElementStyle>
<Style TargetType="ComboBox">
<Setter Property="ItemsSource" Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}, Path=DataContext.SalesLineList}"/>
</Style>
</DataGridComboBoxColumn.ElementStyle>
<DataGridComboBoxColumn.EditingElementStyle>
<Style TargetType="ComboBox">
<Setter Property="ItemsSource" Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}, Path=DataContext.SalesLineList}"/>
</Style>
</DataGridComboBoxColumn.EditingElementStyle>
</DataGridComboBoxColumn>
</DataGrid.Columns>
</DataGrid>
现在它正确显示除销售线列以外的所有列。
即使我已将SalesLine绑定到列,它也不会在网格中显示当前行的销售线名称。但是,当我点击下拉框时,会填充下拉列表。
请帮我在销售线列上显示销售线名称。
答案 0 :(得分:1)
这可能是因为Customer.SalesLine
属性未指向SalesLineList
您需要覆盖ToString()
类中的SalesLine
方法,以便在ID匹配时使两个对象相同。默认情况下,只有在memoroy中引用完全相同的对象时才会认为它们相同。