Question

i m trying to bound a list of object to DataGrid but i m getting wrong value: the object class:

public class Attribute
{
    public Attribute()
    {

    }

    private string _name;

    public string name
    {
        get { return _name; }
        set { _name = value; }
    }



    private List<Value> _valueList = new List<Value>();

    public List<Value> ValueList
    {
        get { return _valueList; }
        set { _valueList = value; }
    }
}

public class Value
{

    private string _value;

    public string value
    {
        get { return _value; }
        set { _value = value; }
    }

    public override string ToString()
    {
        return _value.ToString();
    }
}

物体清单:List<Attribute> 属性/代码>



attributeDataGrid.ItemsSource = attributes;


when i bound i get a grid with name column correct
but the "ValueList" shown as "(Collection)" instead of the string...

如何约束名单?

Answer 1

Your overriden ToString method in Value is not called, because WPF displays the content of ValueList in your second column, i.e. it displays ValueList.ToString(). What do you expect to see in the second column? A comma separated list of the values in the ValueList?

Answer 2

下面是它为我工作的东西。

关于Load方法学的文字如下:

Attribute atr = new Attribute();
atr.ValueList.Add(new Value() { value = "One" });
atr.ValueList.Add(new Value() { value = "Two" });
atr.ValueList.Add(new Value() { value = "Three" });
atr.ValueList.Add(new Value() { value = "Four" });
dataGrid.DataContext = atr.ValueList;

在XAML档案中:

    <DataGrid x:Name="dataGrid" AutoGenerateColumns="False" ItemsSource="{Binding}" >
        <DataGrid.Columns>
            <DataGridTextColumn Binding="{Binding value}" />
        </DataGrid.Columns>
    </DataGrid>

希望这一法典有助于你们。

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