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Metro 8 - 綁定ListView導致System.ArgumentException“值不在預期范圍內”

[英]Metro 8 - Binding ListView causes System.ArgumentException “Value does not fall within the expected range”

 原文  2012-06-22 02:12:33  5   1    c#/ wpf/ xaml/ microsoft-metro

問題描述

我不確定今天早上發生了什么，我運行了我的項目，它開始導致System.ArgumentException錯誤。 也許我昨​​晚改變了一些東西，我又睡了一半。

我試着尋找答案，這給了我一個關於在財產上有相同名字的想法？

我掃描了我的代碼，它看起來就像最后一次成功運行一樣......很奇怪..

也許你可以幫助我找出錯誤並用它來啟發我。

基本上錯誤是在此代碼中引起的 

lvSubmeters.ItemsSource = this.store

在這段代碼中 

public MainPage()
{
    this.InitializeComponent();
    this.InitializeControlEvents();
    this.InitializeControls();
}

void InitializeControls()
{
    store = new DataStore();
    store.AllItems = new System.Collections.ObjectModel.ObservableCollection<ItemFields>();
    PopulateTempData();

    lvSubmeters.ItemsSource = this.store;
}

這是我的PopulateTempData 

void PopulateTempData()
{
    txCurrentBill.Text = "5308.07";
    txKwHUsed.Text = "710";
    txTotalAdditonalCharges.Text = "249.1";
    ComputeKwhPerSubmeter(txTotalAdditonalCharges, null);

    RefreshListView(new ItemFields()
    {
        MeterID = "1234",
        Fullname = "XOP",
        LastReading = 22980,
        NewReading = 23107,
        KwhPerSubmeter = Convert.ToDouble(txKwHPerSub.Tag),
        AdditionalCharges = Convert.ToDouble(txChargeForEachSubmeters.Tag)
    });
    RefreshListView(new ItemFields()
    {
        MeterID = "2345",
        Fullname = "Bigasan",
        LastReading = 0,
        NewReading = 0,
        KwhPerSubmeter = Convert.ToDouble(txKwHPerSub.Tag),
        AdditionalCharges = Convert.ToDouble(txChargeForEachSubmeters.Tag)
    });
    RefreshListView(new ItemFields()
    {
        MeterID = "3456",
        Fullname = "Store",
        LastReading = 0,
        NewReading = 0,
        KwhPerSubmeter = Convert.ToDouble(txKwHPerSub.Tag),
        AdditionalCharges = Convert.ToDouble(txChargeForEachSubmeters.Tag)
    });
    RefreshListView(new ItemFields()
    {
        MeterID = "4567",
        Fullname = "Social & Play",
        LastReading = 7056,
        NewReading = 7511,
        KwhPerSubmeter = Convert.ToDouble(txKwHPerSub.Tag),
        AdditionalCharges = Convert.ToDouble(txChargeForEachSubmeters.Tag)
    });
    RefreshListView(new ItemFields()
    {
        MeterID = "5678",
        Fullname = "Parlor",
        LastReading = 8277,
        NewReading = 8365,
        KwhPerSubmeter = Convert.ToDouble(txKwHPerSub.Tag),
        AdditionalCharges = Convert.ToDouble(txChargeForEachSubmeters.Tag)
    });
}

這是ItemFields模型 

using System;

namespace ElectricSubmeterBillComputation.Models
{
    using System.ComponentModel;

    public class ItemFields : System.ComponentModel.INotifyPropertyChanged
    {
        string _meter_id = string.Empty;
        public string MeterID
        {
            get { return this._meter_id; }
            set
            {
                if (_meter_id != value)
                {
                    _meter_id = value;
                    NotifyPropertyChanged("MeterID");
                }
            }
        }

        string _fullname = string.Empty;
        public string Fullname
        {
            get { return this._fullname; }
            set
            {
                if (this._fullname != value)
                {
                    this._fullname = value;
                    NotifyPropertyChanged("Fullname");
                }
            }
        }

        int _lastreading = 0;
        public int LastReading
        {
            get { return this._lastreading; }
            set
            {
                if (this._lastreading != value)
                {
                    this._lastreading = value;
                    NotifyPropertyChanged("LastReading");
                }
            }
        }

        int _newreading = 0;
        public int NewReading
        {
            get { return this._newreading; }
            set
            {
                if (this._newreading != value)
                {
                    this._newreading = value;
                    NotifyPropertyChanged("NewReading");
                }
            }
        }

        int _kwhused = 0;
        public int KwHUsed
        {
            get { return this._kwhused; }
            set
            {
                if (this._kwhused != value)
                {
                    this._kwhused = value;
                    NotifyPropertyChanged("KwHUsed");
                }
            }
        }

        double _KwHPerSubmeter = 0.0;
        public double KwhPerSubmeter
        {
            get { return this._KwHPerSubmeter; }
            set
            {
                if (this._KwHPerSubmeter != value)
                {
                    this._KwHPerSubmeter = value;
                    NotifyPropertyChanged("KwhPerSubmeter");
                }
            }
        }

        double _kwhamount = 0.0;
        public double KwhUsedAmount
        {
            get { return this._kwhamount; }
            set
            {
                if (this._kwhamount != value)
                {
                    this._kwhamount = value;    
                    NotifyPropertyChanged("KwhUsedAmount");
                }
            }
        }

        double _add_charge = 0.0;
        public double AdditionalCharges
        {
            get { return this._add_charge; }
            set
            {
                if (this._add_charge != value)
                {
                    this._add_charge = value;
                    NotifyPropertyChanged("AdditionalCharges");
                }
            }
        }

        double _total_amount = 0.0;
        public double TotalAmount
        {
            get { return this._total_amount; }
            set
            {
                if (this._total_amount != value)
                {
                    this._total_amount = value;
                    NotifyPropertyChanged("TotalAmount");
                }
            }
        }

        public void Update()
        {
            KwHUsed = NewReading - LastReading;
            KwhUsedAmount = KwHUsed * KwhPerSubmeter;
            TotalAmount = KwhUsedAmount + AdditionalCharges;
        }

        #region INotifyPropertyChanged
        public event PropertyChangedEventHandler PropertyChanged;

        private void NotifyPropertyChanged(String info)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(info));
            }
        }
        #endregion
    }
}

這是DataStore模型 

using System;
using System.Collections.ObjectModel;

namespace ElectricSubmeterBillComputation.Models
{
    using System.ComponentModel;

    public class DataStore : INotifyPropertyChanged
    {
        ObservableCollection<ItemFields> _allItems;
        public ObservableCollection<ItemFields> AllItems
        {
            get { return this._allItems; }
            set
            {
                _allItems = value;
                NotifyPropertyChanged("AllItems");
            }
        }

        public void UpdateAllAmounts(double AdditionalChargersPerSubmeter)
        {
            foreach (ItemFields item in _allItems)
            {
                item.AdditionalCharges = AdditionalChargersPerSubmeter;
                item.Update();
            }
        }

        #region INotifyPropertyChanged
        public event PropertyChangedEventHandler PropertyChanged;

        private void NotifyPropertyChanged(String info)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(info));
            }
        }
        #endregion
    }
}

最后，我的列表視圖 

<ListView Grid.Row="3" x:Name="lvSubmeters" ItemTemplate="{StaticResource SubmeterItems}" VerticalAlignment="Top" HorizontalAlignment="Stretch" SelectionChanged="lvSubmeters_SelectionChanged">
    <ListView.ItemContainerStyle>
        <Style TargetType="ListViewItem">
            <Setter Property="HorizontalContentAlignment" Value="Stretch" />
        </Style>
    </ListView.ItemContainerStyle>
</ListView>

和SubmeterItems模板 

<DataTemplate x:Name="SubmeterItems">
    <Grid VerticalAlignment="Top" HorizontalAlignment="Stretch"  Margin="5,5,5,5">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="166"/>
            <ColumnDefinition Width="100*"/>
            <ColumnDefinition Width="200"/>
        </Grid.ColumnDefinitions>
        <StackPanel Grid.Column="0" VerticalAlignment="Top">
            <TextBlock HorizontalAlignment="Stretch" VerticalAlignment="Top" Text="{Binding MeterID}" FontSize="24"  FontWeight="Bold" Foreground="#FF429AA3" />
            <TextBlock HorizontalAlignment="Stretch" VerticalAlignment="Top" Text="{Binding Fullname}" FontSize="16"  />
        </StackPanel>
        <StackPanel Grid.Column="1" VerticalAlignment="Top" Height="95">
            <TextBlock HorizontalAlignment="Stretch" VerticalAlignment="Top" Text=" " FontSize="24"  FontWeight="Bold" Foreground="#FF429AA3" />
            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="100"/>
                    <ColumnDefinition Width="29*"/>
                </Grid.ColumnDefinitions>
                <StackPanel Grid.Column="0">
                    <TextBlock Grid.Column="0" VerticalAlignment="Top" Text="Last Reading:" FontSize="14" Margin="0,0,5,5"  />
                    <TextBlock Grid.Column="0" VerticalAlignment="Top" Text="New Reading:" FontSize="14" Margin="0,0,5,5"  />
                    <TextBlock Grid.Column="0" VerticalAlignment="Top" Text="KW/H Used:" FontSize="14" Margin="0,0,5,5"  />
                </StackPanel>
                <StackPanel Grid.Column="1">
                    <TextBlock Grid.Column="1" VerticalAlignment="Top" Text="{Binding LastReading}" FontSize="14" Margin="0,0,5,5" FontWeight="Bold"  />
                    <TextBlock Grid.Column="1" VerticalAlignment="Top" Text="{Binding NewReading}" FontSize="14" Margin="0,0,5,5" FontWeight="Bold"  />
                    <TextBlock Grid.Column="1" VerticalAlignment="Top" Text="{Binding KwHUsed}" FontSize="14" Margin="0,0,5,5" FontWeight="Bold"  />
                </StackPanel>
            </Grid>
        </StackPanel>

        <StackPanel Grid.Column="2" VerticalAlignment="Bottom" HorizontalAlignment="Stretch" Background="Black">
            <TextBlock HorizontalAlignment="Stretch" VerticalAlignment="Top" Text="{Binding KwhUsedAmount}" FontSize="20"  FontWeight="Bold" Foreground="Red" TextAlignment="Right" Margin="0,0,5,0" />
            <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
                <TextBlock HorizontalAlignment="Stretch" VerticalAlignment="Top" Text="+" FontSize="20" Foreground="#99FF0000" TextAlignment="Right"  Margin="0,0,5,0"/>
                <TextBlock HorizontalAlignment="Stretch" VerticalAlignment="Top" Text="{Binding AdditionalCharges}" FontSize="20" Foreground="#99FF0000" TextAlignment="Right"  Margin="0,0,5,0"/>
            </StackPanel>
            <TextBlock HorizontalAlignment="Stretch" VerticalAlignment="Top" Text="{Binding TotalAmount}" FontSize="34" FontWeight="Bold" Foreground="Green" TextAlignment="Right"  Margin="0,0,5,0" />
        </StackPanel>
    </Grid>
</DataTemplate>

最后是堆棧跟蹤 

   at Windows.UI.Xaml.Controls.ItemsControl.put_ItemsSource(Object value)
   at ElectricSubmeterBillComputation.MainPage.InitializeControls() in d:\Codes\WindowsMetro\ElectricSubmeterBillComputation\ElectricSubmeterBillComputation\MainPage.xaml.cs:line 43
   at ElectricSubmeterBillComputation.MainPage..ctor() in d:\Codes\WindowsMetro\ElectricSubmeterBillComputation\ElectricSubmeterBillComputation\MainPage.xaml.cs:line 33
   at ElectricSubmeterBillComputation.ElectricSubmeterBillComputation_XamlTypeInfo.XamlTypeInfoProvider.Activate_1_MainPage() in d:\Codes\WindowsMetro\ElectricSubmeterBillComputation\ElectricSubmeterBillComputation\obj\Debug\XamlTypeInfo.g.cs:line 121
   at ElectricSubmeterBillComputation.ElectricSubmeterBillComputation_XamlTypeInfo.XamlUserType.ActivateInstance() in d:\Codes\WindowsMetro\ElectricSubmeterBillComputation\ElectricSubmeterBillComputation\obj\Debug\XamlTypeInfo.g.cs:line 277

1 個解決方案

解決方案1
 2  2012-06-22 02:40:48

解決了.. 

lvSubmeters.ItemsSource = this.store;

它應該是 

lvSubmeters.ItemsSource = this.store.AllItems;



所以為了制作上面的第一個代碼 

lvSubmeters.DataContext = this.store;

ListView應該有 

ItemsSource="{Binding AllItems}"

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