使用网格视图,我有一列将 NumericUpDown 控件绑定到底层对象列表。问题是我可以绑定到 UpDown 控件上的 valuechanged 事件,但是当我更新百分比时,它不会在屏幕上更新(GridView)。如果在 member.refreshCandidatesGrid 我调用grid.Rebind()它会导致混乱(屏幕锁定)。如果我在侧面添加一个按钮并在设置所有值并使用重新绑定 allthgin 调用 member.refreshCandidatesGrid 后单击该按钮,则可以正常工作。
我希望有 2 种方法中的 1 种起作用:
推动微调器(数字向上),并让它触发一个事件(微调器中的每个刻度),我可以用它来更新百分比
当我离开那个微调器字段时发生事件,不幸的是,LostFocus 看起来是唯一可能有意义的事件,并且似乎在微调器起诉期间触发......
对方法、代码结构(即使不相关)的想法都值得赞赏 - 在此先感谢您。
XAML 看起来像这样:
<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>
它绑定到一个 f# 类,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 ;
()