Question

经过多次尝试，我无法将我的集合（CollectionViewSource）从我的View传递给我的转换器。（VisibilityColumn）

Xaml（WPF）：这里我的集合安排在源数据网格中。很遗憾，我无法恢复此源，以便在我的转换器中使用。问题可以找到标记。

let redis = require('redis'),
    BitSet = require('./bitset');

let client = redis.createClient();

// create some data
let bs = new BitSet;    
bs.set(0, 1);
bs.set(31, 1);

// calculate how many bytes we'll need
var numBytes = Math.ceil(bs.msb()/8);
// construct a buffer with that much space
var buffer = new Buffer(numBytes);

// for each byte    
for (var i = 0; i < numBytes; i++) {
    var byte = 0;

    // iterate over each bit
    for (var j = 0; j < 8; j++) {
        // slide previous bits to the left
        byte <<= 1;
        // and set the rightmost bit
        byte |= bs.get(i*8+j);
    }

    // put this byte in the buffer
    buffer[i] = byte;
}

// now we have a complete buffer to use as our value in Redis    
client.set('bitset', buffer, function (err, result) {
    client.getbit('bitset', 31, function (err, result) {
        console.log('Bit 31 = ' + result);
        client.del('bitset', function () {
            client.quit();
        });
    });
});

转换器：CollectionViewSource（CurrentCollection）必须与我的视图链接。

  <D:DataGridRecherche/>
    <D:DataGridTemplate  x:Name="Datagrid" Grid.Column="0"  Grid.Row="1" Grid.RowSpan="2"  ItemsSource="{Binding DataProduits,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}">
        <DataGrid.Resources>
            <CollectionViewSource x:Key="Currentcollection" Source="{Binding Path=ColumnName}" />
        </DataGrid.Resources>
        <DataGrid.Columns>
            <DataGridTextColumn Header="ID" Binding="{Binding Path=Prod_Id}"/>
            <DataGridTextColumn Header="Désignation" Binding="{Binding Path=Prod_Des}"/>
            <DataGridTextColumn Header="Statut regie" Binding="{Binding Path=Prod_Idsteap}"/>
            <DataGridTextColumn Header="Ste. d'appartenance">
                <DataGridTextColumn.Visibility>
                    <Binding Path="Prod_Cloture" Converter="{StaticResource VisibilityColumn}" ConverterParameter="Prod_Cloture"  Mode="TwoWay" >
                        <Binding> <!-- the problem seems to be here -->
                            <Converters:VisibilityColumn CurrentCollection="{StaticResource Currentcollection}"/>
                        </Binding> 
                    </Binding>
                    </DataGridTextColumn.Visibility>
            </DataGridTextColumn>
        </DataGrid.Columns>
    </D:DataGridTemplate>

Answer 1

感谢您的回答，但转换器并不总是启动。我认为还是正确应用了你的代码。

  <DataGridTextColumn Header="Ste. d'appartenance" Binding="{Binding Path=Prod_Cloture}">
                <DataGridTextColumn.Visibility>
                 <Binding Path="Prod_Cloture" ConverterParameter="Prod_Cloture" Mode="TwoWay" UpdateSourceTrigger="PropertyChanged">
                    <Binding.Converter>
                        <Converters:VisibilityColumn CurrentCollection="{StaticResource Currentcollection}"/>
                    </Binding.Converter>
                 </Binding>
                </DataGridTextColumn.Visibility>
            </DataGridTextColumn>

将集合从View（WPF）传递到我的转换器

1 个答案: