这是我的ComboBox：
<ComboBox HorizontalAlignment="Left"
Margin="125,110,0,0"
VerticalAlignment="Top"
Width="120"
DisplayMemberPath="lot_number"
ItemsSource="{Binding LotNumList}"
RenderTransformOrigin="0.583,2" Height="18" />
这是一个数据网格，我希望更新其中的值：
<DataGrid HorizontalAlignment="Left" Margin="228,177,0,0" VerticalAlignment="Top"
Height="292" Width="617" ItemsSource="{Binding ComponentsList}"
AutoGenerateColumns="False">
<DataGrid.Columns>
<DataGridTextColumn Header="Component" Binding="{Binding component}" CanUserResize="False"/>
<DataGridTextColumn Header="Control" Binding="{Binding aControl}" CanUserResize="False"/>
<DataGridTextColumn Header="Reference" Binding="{Binding cal_ref}" CanUserResize="False" />
<DataGridTextColumn Header="Family" Binding="{Binding family}" CanUserResize="False"/>
<DataGridTextColumn Header="Id" Binding="{Binding componentId }" CanUserResize="False"/>
</DataGrid.Columns>
以下是我如何从数据库中获取数据来填充ComboBox：
//Grabs the lot_number column from db that is distinct
var lotNum = db.LotInformation.GroupBy(i => i.lot_number)
.Select(group => group.FirstOrDefault());
//Loops through the lot numbers column in db and converts to list
foreach (var item in lotNum)
{
Console.WriteLine(item.lot_number);
}
LotNumList = lotNum.ToList();
现在我想知道如何连接我的ComboBox，以便当我在ComboBox中选择一个值时...基于ComboBox中的选择值更新DataGrid。
我尝试了以下内容：
private void UpdateExistLotList(string LotNumber)
{
using (var db = new DDataContext())
{
//Grabs the lot_number column from db that is distinct
var ExistLot = db.LotInformation.First(l => l.lot_number.Equals(LotNumber));
}
}
我可以帮忙翻译，以下是需要翻译的内容：
我在我的批号列表属性中调用方法，但它没有被调用或者只是无法正常工作。我不确定我做错了什么。有任何想法吗？
编辑：
属性：
public List<Components> ComponentsList
{
get
{
return components;
}
set
{
components = value;
RaisePropertyChanged("ComponentsList");
}
}
public string LotNumber
{
get
{
return lotNumber;
}
set
{
lotNumber = value;
RaisePropertyChanged("LotNumber");
}
}
public List<LotInformation> LotNumList
{
get
{
return lotNumList;
}
set
{
lotNumList = value;
RaisePropertyChanged("LotNumList");
UpdateExistLotList(LotNumber);
}
}
这里是声明LotNumber的地方（我从内存中反序列化的值，并将其赋值给LotNumber）：
public void DeSerializationXML(string filePath)
{
XmlRootAttribute xRoot = new XmlRootAttribute();
xRoot.ElementName = "lot_information";
xRoot.IsNullable = false;
// Create an instance of lotinformation class.
var lot = new LotInformation();
// Create an instance of stream writer.
TextReader txtReader = new StreamReader(filePath);
// Create and instance of XmlSerializer class.
XmlSerializer xmlSerializer = new XmlSerializer(typeof(LotInformation), xRoot);
// DeSerialize from the StreamReader
lot = (LotInformation)xmlSerializer.Deserialize(txtReader);
// Close the stream reader
txtReader.Close();
//Storing deserialized strings to db
using (var db = new DMIDataContext())
{
LotInformation newLot = new LotInformation();
if (newLot != null)
{
newLot.Id = lot.Id;
newLot.lot_number = lot.lot_number;
newLot.exp_date = lot.exp_date;
LotNumber = newLot.lot_number;
ExpirationDate = newLot.exp_date.ToString();
//Grabs the lot_number column from db that is distinct
var lotNum = db.LotInformation.GroupBy(i => i.lot_number).Select(group => group.FirstOrDefault());
//Loops through the lot numbers column in db and converts to list
foreach (var item in lotNum)
{
Console.WriteLine(item.lot_number);
}
LotNumList = lotNum.ToList();
foreach (Components comp in lot.Components)
{
newLot.Components.Add(comp);
}
ComponentsList = newLot.Components;
foreach (Families fam in lot.Families)
{
newLot.Families.Add(fam);
}
FamiliesList = newLot.Families;
try
{
db.LotInformation.Add(newLot);
db.SaveChanges();
Console.WriteLine("successfully");
}
catch
{
//TODO: Add a Dialog Here
}
}
}