GridView：用於更新第二列的NumericUpDown列

Question

使用gridview我有一列具有綁定到基礎對象列表的NumericUpDown控件。問題是我可以綁定到UpUp控件的valuechanged事件，但是當我更新百分比時，它不會在屏幕上更新（GridView）。如果在member.refreshCandidatesGrid我打電話grid.Rebind（）它會導致一個混亂（屏幕鎖定）。如果我在側面添加一個按鈕，然後在設置所有值後單擊該按鈕，並使用rebind everythgin正常工作，可以調用member.refreshCandidatesGrid。

我很想有1 2的方法是可行的：

1. 推微調（數字沿着上下），並有火（中微調每個時鐘週期）的事件，我可以用它來更新百分率值

2. 有一個事件火，當我離開這個微調場，不幸的是，引發LostFocus看起來是可能是有意義的唯一事件，似乎微調的起訴期間火...

關於方法的思考，代碼結構（即使不相關）都很感激 - 先謝謝您。

的XAML看起來somesthing這樣的：

<telerik:RadGridView x:Name="candidateGrid" DataContext="{Binding}"> 
      <telerik:RadGridView.Columns> 
       <telerik:GridViewDataColumn Header="Score" IsFilterable="False" 
         DataMemberBinding="{Binding score, Mode=TwoWay}" Width="80" > 
        <telerik:GridViewDataColumn.CellTemplate> 
         <DataTemplate> 
          <TextBlock Text="{Binding score}" HorizontalAlignment="Right"/> 
         </DataTemplate> 
        </telerik:GridViewDataColumn.CellTemplate> 
        <telerik:GridViewDataColumn.CellEditTemplate> 
         <DataTemplate> 
          <telerik:RadNumericUpDown Loaded="Editor_Loaded" Maximum="10000" UpdateValueEvent="PropertyChanged" IsInteger="True" Minimum="0" ValueChanged="score_ValueChanged" 
            Value="{Binding score, Mode=TwoWay, UpdateSourceTrigger=Explicit}" Width="60" O /> 
         </DataTemplate> 
        </telerik:GridViewDataColumn.CellEditTemplate> 
       </telerik:GridViewDataColumn> 
       <telerik:GridViewDataColumn Header="Percent" IsReadOnly="True" IsFilterable="False" Width="70"> 
        <telerik:GridViewDataColumn.CellTemplate> 
         <DataTemplate> 
          <TextBlock Text="{Binding percent}" HorizontalAlignment="Right"/> 
         </DataTemplate> 
        </telerik:GridViewDataColumn.CellTemplate> 
       </telerik:GridViewDataColumn> 

，並綁定到一個F＃類如下所示：

namespace BV 

open System 
open System.Text.RegularExpressions 
open System.Windows ; 
open System.Windows.Controls; 
open System.Windows.Controls.Primitives ; 
open System.Windows.Media ; 
open Telerik.Windows.Controls; 

open Globals 
open RpcBV 

type Page() as this =  
    inherit UriUserControl("/BV;component/page.xaml", "page") 

    // instance data 
    let mutable brokers = RpcBV.getCandidates() 

    // bound controls for add candidate 
    let FE : FrameworkElement = (this.Content :?> FrameworkElement) 
    let candidateGrid : RadGridView = FE ? candidateGrid 

    do 
     firm.ItemsSource <- RpcBV.getFirms() 
     email.Background <- SolidColorBrush(Colors.Red) 
     addBtn.IsEnabled <- false 
     this.refreshCandidatesGrid() ; 

    member this.refreshCandidatesGrid() = 
     candidateGrid.ItemsSource <- brokers ; 
     () 



    member this.calculatePercentages() = 
     let totalScore = List.fold (fun acc (candidate: ScorableCandidate) -> acc + candidate.score) 0 brokers 

     let scoreEm (candidate: ScorableCandidate) = 
      candidate.percent <- (float candidate.score)/float totalScore * 100. 

     List.iter scoreEm <| brokers 

    member this.addCadidate_Click (sender : obj) (args : RoutedEventArgs) = 
     this.addCandidateFromForm() 
     this.resetAddCandidateForm() 
     this.refreshCandidatesGrid() 

    member this.score_LostFocus (sender : obj) (args : RoutedEventArgs) = 
     () 

    member this.score_ValueChanged (o : obj) (arg : RadRangeBaseValueChangedEventArgs) = 
     this.calculatePercentages() 

    member this.Editor_Loaded (sender:obj) (args: RoutedEventArgs) = 
     let ctrl = sender :?> Control; 
     ctrl.Focus() |> ignore ; 
     () 

Answer 1

如果你想成爲在UI立即反映屬性更改，然後您的控件綁定的類型可能應該實現INotifyPropertyChanged接口（或使用其他機制，如公開DependencyProperties）。您對ScorableCandidate的定義是什麼樣的？