我有一个类，我正在实现属性更改事件，但由于某种原因，我的列表视图将不会更新数据，除非我关闭该应用程序并重新启动它。
public BindingList<SalesOrders> GetSalesOrders()
{
BindingList<SalesOrders> _salesOrdersList = new BindingList<SalesOrders>();
try
{
string sageDsn = ConfigurationManager.AppSettings["SageDSN"];
string sageUsername = ConfigurationManager.AppSettings["SageUsername"];
string sagePassword = ConfigurationManager.AppSettings["SagePassword"];
//using (var connection = new OdbcConnection("DSN=SageLine50v24;Uid=Manager;Pwd=;"))
using (var connection = new OdbcConnection(String.Format("DSN={0};Uid={1};Pwd={2};", sageDsn, sageUsername, sagePassword)))
{
connection.Open();
//string sql = string.Format(getInvoiceSql, customerCode, DateTime.Today.AddMonths(-1).ToString("yyyy-MM-dd"));
string fromD = dtpFrom.Value.ToString("yyyy-MM-dd");
string toD = dtpTo.Value.ToString("yyyy-MM-dd");
String SQL = string.Format("SELECT 'ORDER_NUMBER', 'ORDER_OR_QUOTE', 'ANALYSIS_1','ACCOUNT_REF','ORDER_DATE','NAME', 'COURIER_NUMBER','COURIER_NAME','CUST_TEL_NUMBER' ,'DESPATCH_DATE','ACCOUNT_REF', 'DEL_NAME', 'DEL_ADDRESS_1', 'DEL_ADDRESS_2', 'DEL_ADDRESS_3', 'DEL_ADDRESS_4', 'DEL_ADDRESS_5', 'INVOICE_NUMBER','INVOICE_NUMBER_NUMERIC', 'CONTACT_NAME','CONSIGNMENT', 'NOTES_1', 'ITEMS_NET' ,'ITEMS_GROSS','QUOTE_STATUS' FROM SALES_ORDER WHERE ORDER_DATE >='{0}' and ORDER_DATE <='{1}'", fromD, toD);
using (var command = new OdbcCommand(SQL, connection))
{
backgroundWorker1.ReportProgress(15);
using (var reader = command.ExecuteReader())
{
while (reader.Read())
{
backgroundWorker1.ReportProgress(35);
counter++;
var salesOrders = new SalesOrders();
if ((reader["ORDER_NUMBER"] != ""))
{
string orderNumber = Convert.ToString(reader["ORDER_NUMBER"]);
salesOrders.ACCOUNT_REF = Convert.ToString(reader["ACCOUNT_REF"]);
salesOrders.RecordIdentifier = "SHN";
salesOrders.ShipmmentId = Convert.ToString(reader["ORDER_NUMBER"]);
salesOrders.OrderDate = Convert.ToDateTime(reader["ORDER_DATE"]);
salesOrders.OrderNumber = Convert.ToString(reader["ORDER_NUMBER"]);
salesOrders.Company = "hackett";
salesOrders.Carrier = Convert.ToString(reader["COURIER_NUMBER"]);
salesOrders.CarrierService = Convert.ToString(reader["COURIER_NAME"]);
salesOrders.CustomerName = Convert.ToString(reader["NAME"]);
salesOrders.ShipToAddress1 = Convert.ToString(reader["DEL_ADDRESS_1"]);
salesOrders.ShipToAddress2 = Convert.ToString(reader["DEL_ADDRESS_2"]);
salesOrders.ShipToAddress3 = Convert.ToString(reader["DEL_ADDRESS_3"]);
salesOrders.ShipToAddress4 = Convert.ToString(reader["DEL_ADDRESS_4"]);
salesOrders.ShipToAddress5 = Convert.ToString(reader["DEL_ADDRESS_5"]);
salesOrders.ShiptoAttention = Convert.ToString(reader["DEL_NAME"]);
salesOrders.ShiptoPhoneNo = Convert.ToString(reader["CUST_TEL_NUMBER"]);
salesOrders.Country = Convert.ToString(reader["ANALYSIS_1"]);
salesOrders.ShiptoEmail = "";
salesOrders.MakeAddressDefault = "Y";
salesOrders.ExporteDateTime = GetExportedDate(orderNumber);
bool isProcessed = hasbeenProcessed(orderNumber);
if (isProcessed == true)
salesOrders.Exported = true;
_salesOrdersList.Add(salesOrders);
}
backgroundWorker1.ReportProgress(80);
}
}
}
}
backgroundWorker1.ReportProgress(100);
}
catch (Exception ex)
{
}
return _salesOrdersList;
}
}
backgroundWorker1.ReportProgress(100);
}
catch (Exception ex)
{
}
return _salesOrdersList;
}
在后台工作人员中，我在此处创建列表
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
var listOrders = new List<SalesOrders>();
listOrders = GetSalesOrders().OrderByDescending(o => o.OrderDate).ToList();
var listBindingOrders = new BindingList<SalesOrders>(listOrders);
SalesOrders = listBindingOrders;
}
这是我绑定上面的构造函数。
public BindingList<SalesOrders> SalesOrders = new BindingList<BusinessObjects.SalesOrders>();
这是我要在正在更改的导出标志上使用通知更改属性的类，但只有在关闭应用程序时才会更新。
public class SalesOrders : INotifyPropertyChanged
{
public bool selected { get; set; }
public string ORDER_OR_QUOTE { get; set; }
public string OrderNumber { get; set; }
public string ACCOUNT_REF { get; set; }
public string RecordIdentifier { get; set; }
public DateTime OrderDate { get; set; }
public string ShipmmentId { get; set; }
public string Company { get; set; }
public string Carrier { get; set; }
public string CarrierService { get; set; }
public string Customer { get; set; }
public string CustomerName { get; set; }
public string ShiptoName { get; set; }
public string ShipToAddress1 { get; set; }
public string ShipToAddress2 { get; set; }
public string ShipToAddress3 { get; set; }
public string ShipToAddress4 { get; set; }
public string ShipToAddress5 { get; set;
}
public string ShiptoAttention { get; set; }
public string ShiptoPhoneNo { get; set; }
public string ShiptoEmail { get; set; }
public string County { get; set; }
public string MakeAddressDefault { get; set; }
public string Address
{
get
{
var sb = new StringBuilder();
sb.Append(ShipToAddress1);
sb.Append(ShipToAddress2);
sb.Append(ShipToAddress3);
return sb.ToString();
}
}
private bool ExportedValue = false;
public bool Exported
{
get { return this.ExportedValue; }
set
{
if (value != this.ExportedValue)
{
this.ExportedValue = value;
NotifyPropertyChanged();
}
}
}
public event PropertyChangedEventHandler PropertyChanged;
// This method is called by the Set accessor of each property.
// The CallerMemberName attribute that is applied to the optional propertyName
// parameter causes the property name of the caller to be substituted as an argument.
private void NotifyPropertyChanged([CallerMemberName] String propertyName = "")
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
// The cons
public DateTime ExporteDateTime { get; set; }
public String Country { get; set; }
}
我认为在这里展示我的绑定事件很重要。
// <summary>
/// Bind the list view to the sales order collection
/// </summary>
/// <param name="_salesOrders"></param>
private void BindListView(BindingList<SalesOrders> _salesOrders)
{
invoiceListView.Items.Clear();
foreach (SalesOrders _pur in _salesOrders)
{
invoiceListView.Items.Add(CreateListViewItem(_pur));
}
foreach (ListViewItem lvw in invoiceListView.Items)
{
Boolean hasExported = Convert.ToBoolean(lvw.SubItems[8].Text);
if (hasExported == true)
{
lvw.BackColor = Color.Wheat;
}
}
}
我希望有人能帮我解决这个问题，但是在其他一切正常工作的那一刻，我却发疯了。
答案 0 :(得分：0)
您是否已确保使用ListView1.ItemsSource = bindingList来与ListView关联的BindingList，然后坚持修改实际的BindingList而不是ListView？ （例如，不使用listView1.Items.Add，而只是将其添加到listViews绑定集合中）
答案 1 :(得分：-1)
您是否尝试过每次都使用.refresh（）方法