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我在GridControl的Devexpress的DataTemplate中有一個CheckBox。其綁定到網格的布爾字段。我在自定義列表中添加選中的項目（選定的行ID）。並在UnChecked of Checkbox從自定義列表中刪除項目。最後按鈕點擊我插入按鈕點擊記錄。爲什麼CheckEdit事件不會在WPF中的GridControl中檢查項目的第一次嘗試時觸發？
問題：當我打開表格第一次使用CheckBox選擇一個項目CheckBox Checked事件不會觸發，但屬性更改事件觸發。並在點擊INSERT按鈕時表示沒有選擇項目。但是當我選擇其他行並單擊插入它只插入第一個選定的項目，而不是先前和當前。它錯過了當前。這是爲什麼發生？任何想法？
Infill.cs
public partial class Infill:INotifyPropertyChanged
{
public int InfillID { get; set; }
//some other fields here
private bool isChecked;
public bool IsChecked { get { return isChecked; } set { SetField(ref isChecked, value, "IsChecked"); } }
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
}
protected bool SetField<T>(ref T field, T value, string propertyName)
{
if (EqualityComparer<T>.Default.Equals(field, value)) return false;
field = value;
OnPropertyChanged(propertyName);
return true;
}
}
InfillForm.xaml
<dxg:GridControl Height="500" Name="grdInfill" VerticalAlignment="Center">
<dxg:GridControl.Columns>
<dxg:GridColumn AllowEditing="True" Width="10">
<dxg:GridColumn.CellTemplate>
<DataTemplate>
<CheckBox Name="chkSelect" Visibility="Hidden" HorizontalAlignment="Center" IsChecked="{Binding Path=RowData.Row.IsChecked, Mode=TwoWay}" Checked="CheckEdit_Checked" Unchecked="CheckEdit_Unchecked"/>
</DataTemplate>
</dxg:GridColumn.CellTemplate>
</dxg:GridColumn>
<dxg:GridColumn FieldName="IsChecked" Header="Select" />
<dxg:GridControl.View>
<dxg:TableView Name="grdInfillInner" ShowTotalSummary="True" AutoWidth="True" DetailHeaderContent="True" ShowIndicator="False" ShowGroupPanel="False" CellValueChanging="grdInfillInner_CellValueChanging">
</dxg:TableView>
</dxg:GridControl.View>
</dxg:GridControl>
InfillForm.xaml.cs
private void CheckEdit_Checked(object sender, RoutedEventArgs e)
{
e.Handled = ProcessItem(true);
}
private void CheckEdit_Unchecked(object sender, RoutedEventArgs e)
{
e.Handled = ProcessItem(false);
}
private bool ProcessItem(bool IsChecked)
{
bool result = false;
Infill item = grdInfillInner.FocusedRow as Infill;
if (IsChecked)
{
if (item != null)
{
// DO STUFF HERE EXAMPLE ADD or REMOVE Item to a list, BASED on CHECKED or UNCHECKED!!!
int infillid = item.InfillID;
infillListIDs.Add(infillid);
result = true;
}
}
else
{
if (item != null)
{
if (infillListIDs.Contains(item.InfillID))
{
// if uncheked the checked item then remove from custom list
infillListIDs.Remove(item.InfillID);
}
}
}
grdInfillInner.FocusedRowHandle = -1;
return result;
}
protected void OpenWindow()
{
ReportPopup popup = new ReportPopup();
popup.Owner = this;
popup.WindowStartupLocation = WindowStartupLocation.CenterScreen;
popup.ShowDialog();
}
private void MnuBtnInsert_ItemClick(object sender, DevExpress.Xpf.Bars.ItemClickEventArgs e)
{
//Delete existing and insert new items in table on every click
BLL.DeleteAllInfillPO();
if (infillListIDs.Count > 0)
{
for (int i = 0; i < infillListIDs.Count; i++)
{
//insert selected Checked items id in database
BLL.GetInfillIDAndInsertIntoInfillPO(infillListIDs[i]);
}
BtnView.Visibility = Visibility.Visible;
BtnInsert.Visibility = Visibility.Hidden;
//show report of inserted items
OpenWindow();
}
else
{
MessageBox.Show("Please select item/s from list", "Select Option", MessageBoxButton.OK, MessageBoxImage.Exclamation);
}
}
我不是ABL e通過DataTemplate中的名稱獲取複選框，以便添加布爾字段並綁定到位於datatemplate內部的CheckBox。
幫助讚賞！
如果你不介意。請您提供一些示例代碼來解決上述問題。我是WPF的新手。或點擊按鈕單擊時訪問選中項目的方法？ –