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Связывание данных с viewmodel для просмотра

2013-09-20 2 views
1

Я новичок в wpf mvvm.I мне нужно привязать данные обратно к свойству view из viewmodel. В модели я объявил все свойства, а в viewmodel я объявил свойства с использованием getter и setter..when пытается связать значения, он не обновляет значения view.bt, которые привязаны к свойствам. Элементы управления находятся внутри сетки. Контроль не привязан внутри сетки. мне нужно привязать данные к элементам управления, когда я нажимаю на строку datagrid..am, получая значения bt, она не привязана к элементам управления .pls мне сразу помогает .... pls..pls .. это моя модель.Связывание данных с viewmodel для просмотра

public string FirstName{get;set;}   
     public string LastName { get; set; } 
     public DateTime Dob { get; set; } 
     public int Age { get; set; } 
     public string Street1 { get; set; } 
     public string Street2 { get; set; } 
     public string City { get; set; } 
     public string State { get; set; } 
     public string ZipCode { get; set; } 
     public string PhoneNumber { get; set; } 
     public string MobileNumber { get; set; } 
     public string Email { get; set; } 
     public string Web { get; set;

}

Это моя точка зрения модели,

public string Emp_ID; 
     public string emp_ID 
     { 
      get 
      { 
       return emp_ID; 
      } 
      set 
      { 
       emp_ID = value; 
       OnPropertyChanged("Emp_ID"); 
      } 
     } 
     public string FirstName 
     { 
      get 
      { 
       return employee.FirstName; 
      } 
      set 
      { 
       employee.FirstName = value; 
       OnPropertyChanged("FirstName"); 
       this.DetailView = new HomeViewModel(value); 
      } 
     } 

     public string LastName 
     { 
      get 
      { 
       return employee.LastName; 
      } 
      set 
      { 
       employee.LastName = value; 
       OnPropertyChanged("LastName"); 
      } 
     } 
     public DateTime Dob 
     { 
      get 
      { 
       return employee.Dob; 
      } 
      set 
      { 
       employee.Dob = value; 
       OnPropertyChanged("Dob"); 
       OnPropertyChanged("Age"); 
      } 
     } 
     public int Age 
     { 
      get 
      { 
       //Birthdate = Convert.ToDateTime(Dob); 
       return employee.Age = DateTime.Today.Year - Dob.Year; 
      } 
      set 
      { 
       employee.Age = value; 
       OnPropertyChanged("Age"); 
      } 

     } 
     public string Street1 
     { 
      get 
      { 
       return employee.Street1; 
      } 
      set 
      { 
       employee.Street1 = value; 
       OnPropertyChanged("Street1"); 
      } 
     } 
     public string Street2 
     { 
      get 
      { 
       return employee.Street2; 
      } 
      set 
      { 
       employee.Street2 = value; 
       OnPropertyChanged("Street2"); 
      } 
     } 
     public string City 
     { 
      get 
      { 
       return employee.City; 
      } 
      set 
      { 
       employee.City = value; 
       OnPropertyChanged("City"); 
      } 
     } 
     public string State 
     { 
      get 
      { 
       return employee.State; 
      } 
      set 
      { 
       employee.State = value; 
       OnPropertyChanged("State"); 
      } 
     } 
     public string ZipCode 
     { 
      get 
      { 
       return employee.ZipCode; 
      } 
      set 
      { 
       employee.ZipCode = value; 
       OnPropertyChanged("ZipCode"); 
      } 
     } 
     public string PhoneNumber 
     { 
      get 
      { 
       return employee.PhoneNumber; 
      } 
      set 
      { 
       employee.PhoneNumber = value; 
       OnPropertyChanged("PhoneNumber"); 
      } 
     } 
     public string MobileNumber 
     { 
      get 
      { 
       return employee.MobileNumber; 
      } 
      set 
      { 
       employee.MobileNumber = value; 
       OnPropertyChanged("MobileNumber"); 
      } 
     } 
     public string Email 
     { 
      get 
      { 
       return employee.Email; 
      } 
      set 
      { 
       employee.Email = value; 
       OnPropertyChanged("Email"); 
      } 
     } 
     public string Web 
     { 
      get 
      { 
       return employee.Web; 
      } 
      set 
      { 
       employee.Web = value; 
       OnPropertyChanged("Web"); 
      } 
     }

Это мой связывающий код в ViewModel

public ICommand SelectEmployeeCommand 
     { 
      get 
      { 
       return selectEmployeeCommand; 
      } 
      set 
      { 
       selectEmployeeCommand = value; 
      } 
     } 
private void selectEmployeeDetails() 
     { 
      EmployeeViewModel employeeView = new EmployeeViewModel(); 
      try 
      { 
       sqlConnection = new SqlConnection(Connection.connectionstring); 
       sqlConnection.Open(); 
       selectCommand = new SqlCommand(AppConstants.StoredProcedures.GetDataProcedure, sqlConnection); 
       selectCommand.CommandType = CommandType.StoredProcedure; 
       selectCommand.Parameters.Add(AppConstants.Parameters.Emp_ID, SqlDbType.Int).Value = SelectedEmployee.Row.ItemArray[0]; 


       sqlAdapter = new SqlDataAdapter(selectCommand); 
       sqlDataSet = new DataSet(); 
       sqlAdapter.Fill(sqlDataSet); 
       employeeView.FirstName = sqlDataSet.Tables[0].Rows[0][1].ToString(); 
       employeeView.LastName = sqlDataSet.Tables[0].Rows[0][2].ToString(); 
       employeeView.Dob = Convert.ToDateTime(sqlDataSet.Tables[0].Rows[0][3].ToString()); 
       employeeView.Age = Convert.ToInt32(sqlDataSet.Tables[0].Rows[0][4].ToString()); 
       employeeView.Street1 = sqlDataSet.Tables[0].Rows[0][5].ToString(); 
       employeeView.Street2 = sqlDataSet.Tables[0].Rows[0][6].ToString(); 
       employeeView.City = sqlDataSet.Tables[0].Rows[0][7].ToString(); 
       employeeView.State = sqlDataSet.Tables[0].Rows[0][8].ToString(); 
       employeeView.ZipCode = sqlDataSet.Tables[0].Rows[0][9].ToString(); 
       employeeView.PhoneNumber = sqlDataSet.Tables[0].Rows[0][10].ToString(); 
       employeeView.MobileNumber = sqlDataSet.Tables[0].Rows[0][11].ToString(); 
       employeeView.Email = sqlDataSet.Tables[0].Rows[0][12].ToString(); 
       employeeView.Web = sqlDataSet.Tables[0].Rows[0][13].ToString(); 
      } 
      catch (Exception ex) 
      { 
       throw ex; 
      } 
}

это моя полная XAML для зрения

<Window x:Class="EmployeeRegistration.Home" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     xmlns:cmd="clr-namespace:GalaSoft.MvvmLight.Command;assembly=GalaSoft.MvvmLight.Extras.WPF4" 
     xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity" 
     xmlns:View="clr-namespace:EmployeeRegistration" 
     Title="Home" Height="595" Width="1096"> 
    <Window.DataContext> 
     <View:EmployeeViewModel></View:EmployeeViewModel> 
    </Window.DataContext> 
    <i:Interaction.Triggers> 
     <i:EventTrigger EventName="Loaded"> 
      <cmd:EventToCommand Command="{Binding GetEmployeeCommand}" /> 
     </i:EventTrigger> 
    </i:Interaction.Triggers> 
    <Window.Resources> 
     <Style TargetType="Control" x:Key="myErrorTemplate"> 
      <Setter Property="Validation.ErrorTemplate"> 
       <Setter.Value> 
        <ControlTemplate> 
         <Border BorderBrush="Red" BorderThickness="1" CornerRadius="2.75" Grid.Column="0"> 
          <AdornedElementPlaceholder Name="MyControl" Grid.Column="0"/> 
         </Border> 
        </ControlTemplate> 
       </Setter.Value> 
      </Setter> 
      <Style.Triggers> 
       <Trigger Property="Validation.HasError" Value="true"> 
        <Setter Property="ToolTip" 
       Value="{Binding RelativeSource={x:Static RelativeSource.Self}, 
       Path=(Validation.Errors)[0].ErrorContent}"/> 
       </Trigger> 
      </Style.Triggers> 
     </Style> 
     <Style TargetType="TextBox" BasedOn="{StaticResource myErrorTemplate}" /> 
    </Window.Resources> 
    <Grid Height="984" Width="1073"> 
     <Grid.RowDefinitions> 
      <RowDefinition Height="65"></RowDefinition> 
      <RowDefinition Height="36"></RowDefinition> 
      <RowDefinition Height="35" /> 
      <RowDefinition Height="44"></RowDefinition> 
      <RowDefinition Height="45" /> 
      <RowDefinition Height="49" /> 
      <RowDefinition Height="56" /> 
      <RowDefinition Height="43" /> 
      <RowDefinition Height="40" /> 
      <RowDefinition Height="37"></RowDefinition> 
      <RowDefinition Height="39*" /> 
      <RowDefinition Height="42*" /> 
      <RowDefinition Height="453*" /> 
     </Grid.RowDefinitions> 
     <Grid.ColumnDefinitions> 
      <ColumnDefinition Width="538"></ColumnDefinition> 
      <ColumnDefinition Width="121" /> 
      <ColumnDefinition Width="149" /> 
      <ColumnDefinition Width="110" /> 
      <ColumnDefinition Width="182" /> 
     </Grid.ColumnDefinitions> 

     <Label Name="lblEmployeeDetails" Content="EMPLOYEE DETAILS" FontFamily="Calibri" FontSize="26" HorizontalAlignment="Center" Margin="117,12,125,6" Width="296"></Label> 

     <Label Name="lblHeading" Grid.Column="1" Content="UPDATE EMPLOYEE DETAILS" FontFamily="Calibri" FontSize="26" VerticalAlignment="Center" HorizontalAlignment="Center" Height="44" Width="486" Margin="49,10,27,10" Grid.ColumnSpan="4"> 
     </Label> 

     <TextBlock Margin="0,-2,53,21" HorizontalAlignment="Right" Width="148" Grid.Column="3" Grid.ColumnSpan="2"> 
      <Button Name="btnNewEmployee" Command="{Binding NewEmployeeCommand}" Content="New Employee Registration" FontFamily="Calibri" Background="#FF2693A7" Foreground="White" /> 
     </TextBlock> 
     <Label Name="lblEnterName" Grid.Row="1" Content="Enter Employee Name:" FontFamily="Calibri" FontSize="16" Margin="0,8,12,21" Grid.RowSpan="2"></Label> 
     <TextBox Name="txtSearch" Text="{Binding Path=FirstName,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" Grid.Row="1" Margin="174,18,0,31" HorizontalAlignment="Left" Width="186" Grid.RowSpan="2"></TextBox> 
     <Button Name="btnSearch" Command="{Binding SearchEmployeeCommand}" Grid.Row="1" Content="Search" Margin="0,18,61,31" HorizontalAlignment="Right" Width="103" Foreground="White" Background="Black" Grid.RowSpan="2"></Button> 

     <DataGrid Grid.Row="3" x:Name="grdEmployee" SelectedItem="{Binding SelectedEmployee, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" ItemsSource="{Binding EmployeeDatatable, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, NotifyOnSourceUpdated=True}" AutoGenerateColumns="False" IsReadOnly="True" FontFamily="Calibri" HorizontalAlignment="Center" Margin="5,5,39,0" Width="494" CanUserAddRows="False" Background="#FF20E0BB" AlternatingRowBackground="#FF7CB4AB" Height="405" VerticalAlignment="Top" Grid.RowSpan="10"> 
      <DataGrid.Columns> 
       <DataGridTextColumn Binding="{Binding Emp_id}" Header="Employee ID"></DataGridTextColumn> 
       <DataGridTextColumn Binding="{Binding FirstName}" Header="FirstName"></DataGridTextColumn> 
       <DataGridTextColumn Binding="{Binding LastName}" Header="LastName"></DataGridTextColumn> 
       <DataGridTextColumn Binding="{Binding Age}" Header="Age"></DataGridTextColumn> 
       <DataGridTextColumn Binding="{Binding ZipCode}" Header="ZipCode"></DataGridTextColumn> 
       <DataGridTextColumn Binding="{Binding PhoneNumber}" Header="PhoneNumber"></DataGridTextColumn> 
       <DataGridTextColumn Binding="{Binding MobileNumber}" Header="MobileNumber"></DataGridTextColumn> 
       <DataGridTemplateColumn> 
        <DataGridTemplateColumn.CellTemplate> 
         <DataTemplate> 
          <Button Content="Edit" Command="{Binding DataContext.SelectEmployeeCommand, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}}" CommandParameter="{Binding SelectedEmployee}" ></Button> 
         </DataTemplate> 
        </DataGridTemplateColumn.CellTemplate> 
       </DataGridTemplateColumn> 
      </DataGrid.Columns> 
     </DataGrid> 

     <Label Content="*" Grid.Row="1" Height="30" HorizontalAlignment="Left" Margin="152,10,0,0" Name="lblReqField" VerticalAlignment="Top" Width="16" Foreground="Red" Grid.RowSpan="2" /> 
     <Label Name="lblPersonalInfo" Content="PERSONAL INFO" FontFamily="Calibri" FontSize="20" Foreground="#FF1C48D8" Grid.Column="1" Grid.Row="1" Height="36" HorizontalAlignment="Left" VerticalAlignment="Top" Grid.ColumnSpan="2" Width="270" /> 
     <Label Grid.Column="1" Grid.Row="2" Height="35" HorizontalAlignment="Left" Name="lblFirstName" Content="FirstName" FontFamily="Calibri" FontSize="16" VerticalAlignment="Top" Width="80" /> 
     <TextBox Grid.Column="2" Grid.Row="2" Height="25" HorizontalAlignment="Left" Name="txtFirstName" Text="{Binding employee.FirstName, RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type Window}},Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" BorderBrush="#FF179EB7" VerticalAlignment="Top" Width="130" Margin="9,4,0,0" /> 


     <Label Height="35" HorizontalAlignment="Left" Margin="0,9,0,0" Name="lblLastName" Content="LastName" FontFamily="Calibri" FontSize="16" VerticalAlignment="Top" Width="80" Grid.Column="1" Grid.Row="3" /> 
     <TextBox BorderBrush="#FF179EB7" Height="25" HorizontalAlignment="Left" Name="txtLastName" Text="{Binding Path=DataContext.LastName, RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type Grid}},Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" VerticalAlignment="Top" Width="130" Grid.Column="2" Grid.Row="3" Margin="8,9,0,0" /> 

     <Label Height="35" HorizontalAlignment="Left" Margin="0,10,0,0" Name="lblDob" Content="DOB" FontFamily="Calibri" FontSize="16" VerticalAlignment="Top" Width="56" Grid.Column="1" Grid.Row="4" /> 
     <DatePicker Grid.Column="2" Grid.Row="4" Name="dtpDob" Text="{Binding DataContext.Dob, RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type Grid}},Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" Height="25" HorizontalAlignment="Left" Margin="9,10,0,0" VerticalAlignment="Top" Width="129" /> 

     <Label Height="28" HorizontalAlignment="Left" Name="lblAge" Content="Age" FontFamily="Calibri" FontSize="16" VerticalAlignment="Top" Width="56" Grid.Column="1" Grid.Row="5" Margin="0,6,0,0" /> 
     <TextBox Height="25" HorizontalAlignment="Left" Name="txtAge" BorderBrush="#FF179EB7" IsReadOnly="True" Text="{Binding DataContext.Age, RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type Grid}},Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" VerticalAlignment="Top" Width="129" Grid.Column="2" Grid.Row="5" Margin="9,6,0,0" /> 


     <Label Height="35" HorizontalAlignment="Left" Margin="0,6,0,0" Name="lblAddressInfo" Content="ADDRESS INFO" FontFamily="Calibri" FontSize="20" VerticalAlignment="Top" Width="270" Grid.Column="1" Grid.Row="6" Grid.ColumnSpan="2" /> 


     <Label Height="35" HorizontalAlignment="Left" Name="lblStreet1" Content="Street1" FontFamily="Calibri" FontSize="16" VerticalAlignment="Top" Width="56" Grid.Column="1" Grid.Row="7" /> 
     <TextBox Name="txtStreet1" BorderBrush="#FF179EB7" Text="{Binding DataContext.Street1, RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type Grid}},Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" Height="25" HorizontalAlignment="Left" VerticalAlignment="Top" Width="129" Grid.Column="2" Grid.Row="7" Margin="9,8,0,0" /> 

     <Label Height="35" HorizontalAlignment="Left" Name="lblStreet2" Content="Street2" FontFamily="Calibri" FontSize="16" VerticalAlignment="Top" Width="56" Grid.Column="1" Grid.Row="8" /> 
     <TextBox Name="txtStreet2" BorderBrush="#FF179EB7" Text="{Binding Path=Street2, RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type Grid}},Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" Height="25" HorizontalAlignment="Left" Margin="9,6,0,0" VerticalAlignment="Top" Width="130" Grid.Column="2" Grid.Row="8" /> 

     <Label Height="35" HorizontalAlignment="Left" Name="lblCity" Content="City" FontFamily="Calibri" FontSize="16" Margin="0,1,0,0" VerticalAlignment="Top" Width="56" Grid.Column="1" Grid.Row="9" /> 
     <ComboBox Text="{Binding DataContext.City, RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type Grid}},Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" Name="cmbCity" Width="129" Height="25" BorderBrush="#FF179EB7" Grid.Column="2" Grid.Row="9" HorizontalAlignment="Left" Margin="9,5,0,0" VerticalAlignment="Top"> 
      <ComboBoxItem Content="Kasargod"></ComboBoxItem> 
      <ComboBoxItem Content="Kannur"></ComboBoxItem> 
      <ComboBoxItem Content="Thrissur"></ComboBoxItem> 
      <ComboBoxItem Content="Ernakulam"></ComboBoxItem> 
      <ComboBoxItem Content="Palakkad"></ComboBoxItem> 
      <ComboBoxItem Content="Alappuzha"></ComboBoxItem> 
      <ComboBoxItem Content="Chennai"></ComboBoxItem> 
      <ComboBoxItem Content="WhiteField"></ComboBoxItem> 
      <ComboBoxItem Content="Bangalore"></ComboBoxItem> 
     </ComboBox> 

     <Label Height="35" HorizontalAlignment="Left" Name="lblState" Content="State" FontFamily="Calibri" FontSize="16" Margin="0,4,0,0" VerticalAlignment="Top" Width="56" Grid.Column="1" Grid.Row="10" /> 
     <ComboBox Height="25" HorizontalAlignment="Left" Margin="9,6,0,0" VerticalAlignment="Top" Width="129" Grid.Column="2" Grid.Row="10" Text="{Binding Path=State, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" Name="cmbState" BorderBrush="#FF179EB7"> 
      <ComboBoxItem Content="Kerala"></ComboBoxItem> 
      <ComboBoxItem Content="Karnataka"></ComboBoxItem> 
      <ComboBoxItem Content="TamilNadu"></ComboBoxItem> 
      <ComboBoxItem Content="AndhraPradesh"></ComboBoxItem> 
      <ComboBoxItem Content="Rajastan"></ComboBoxItem> 
     </ComboBox> 


     <Label Height="35" HorizontalAlignment="Left" Name="lblZipcode" Content="ZipCode" FontFamily="Calibri" FontSize="16" VerticalAlignment="Top" Width="65" Grid.Column="1" Grid.Row="11" Margin="3,5,0,0" /> 
     <TextBox Name="txtZipcode" BorderBrush="#FF179EB7" Text="{Binding Path=ZipCode,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" Height="25" HorizontalAlignment="Left" VerticalAlignment="Top" Width="130" Grid.Column="2" Grid.Row="11" Margin="9,0,0,0" /> 

     <Label Height="35" HorizontalAlignment="Left" Name="lblContactInfo" Content="CONTACT INFO" FontFamily="Calibri" FontSize="20" VerticalAlignment="Top" Width="165" Grid.Column="3" Grid.Row="6" Grid.ColumnSpan="2" Margin="0,6,0,0" /> 


     <Label Height="35" HorizontalAlignment="Left" Name="lblPhoneNumber" Content="PhoneNumber" FontFamily="Calibri" FontSize="16" VerticalAlignment="Top" Width="110" Grid.Column="3" Grid.Row="7" /> 
     <TextBox Height="25" Name="txtPhoneNo" BorderBrush="#FF179EB7" Text="{Binding Path=PhoneNumber,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" HorizontalAlignment="Left" Margin="1,0,0,0" VerticalAlignment="Top" Width="129" Grid.Column="4" Grid.Row="7" /> 



     <Label Height="35" HorizontalAlignment="Left" Name="lblMobileNumber" Content="MobileNumber" FontFamily="Calibri" FontSize="16" VerticalAlignment="Top" Width="109" Grid.Column="3" Grid.Row="8" Margin="1,2,0,0" Grid.RowSpan="2" /> 
     <TextBox Name="txtMobileNo" BorderBrush="#FF179EB7" Text="{Binding Path=MobileNumber,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" Height="25" HorizontalAlignment="Left" Margin="1,4,0,0" VerticalAlignment="Top" Width="129" Grid.Column="4" Grid.Row="8" /> 

     <Label Height="35" HorizontalAlignment="Left" Name="lblEmail" Content="Email" FontFamily="Calibri" FontSize="16" VerticalAlignment="Top" Width="56" Grid.Column="3" Grid.Row="9" Margin="0,1,0,0" /> 
     <TextBox Name="txtEmail" BorderBrush="#FF179EB7" Text="{Binding Path=Email,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" Height="25" HorizontalAlignment="Left" Margin="0,5,0,0" VerticalAlignment="Top" Width="129" Grid.Column="4" Grid.Row="9" /> 

     <Label Height="35" HorizontalAlignment="Left" Name="lblWeb" Content="Web" FontFamily="Calibri" FontSize="16" VerticalAlignment="Top" Width="56" Grid.Column="3" Grid.Row="10" Margin="1,4,0,0" />  
     <TextBox Name="txtWeb" BorderBrush="#FF179EB7" Text="{Binding Path=Web,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" Height="25" HorizontalAlignment="Left" Margin="1,4,0,0" VerticalAlignment="Top" Width="129" Grid.Column="4" Grid.Row="10" /> 
    </Grid> 


</Window>

источник

2013-09-20 user2786086

+0

если вы не получаете возможные неточности, попробуйте посмотреть в окне вывода для некоторых обязательных ошибок. Что у вас там? –

+0

Что такое метод 'selectEmployeeDetails' ?. Вы заполняете все данные в локальной переменной. Вы должны хранить данные 'employee'. –

+0

также проверьте свойство Viewmodel emp_ID, вы также имеете общедоступную переменную Emp_ID, и ваш OnPropertyChanged вызывается для Emp_ID, но эта переменная никогда не заполняется. – roqz

ответ

1

Я не понимаю, к чему именно вы пытаетесь привязаться, но, без сомнения, я также не вижу реализации INotfyPropertyChanged interface на вашем классе. Вы должны осуществить это в ваших ViewModel как так:

public class SomeClass : INotifyPropertyChanged 
{ 
    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)); 
    } 

    private int percent = 0; 
    public int Percent 
    { 
     get { return percent; } 
     set 
     { 
      if (value != percent) 
      { 
       percent = value; 
       NotifyPropertyChanged(); 
      } 
     } 
    } 
}

Связывание здесь будет затем прямо вперед

... 
<ProgressBar Value="{Binding Percent}" /> 
...

Я надеюсь, что это помогает.

Обратите внимание, что вам нужна .NET-Framework 4.5, указанная выше, для использования CallerMemberName.

источник

2013-09-20 08:40:06 MoonKnight

+0

код показывает вызовы OnPropertyChanged, поэтому предположительно есть событие PropertyChanged, которое просто не было показано. – grantnz

0

Проблема в том, что у вас есть 2 объекта EmployeeViewModel. Он создается в XAML и назначается DataContext, а тот, который создается при вызове selectEmployeeDetails().

Непонятно, почему вы создаете еще один объект EmployeeViewModel в selectEmployeeDetails(), который предположительно является функцией-членом EmployeeViewModel.

Должны ли вы просто установить текущие объекты в этой функции?

источник

2013-09-20 09:13:10 grantnz

+0

спасибо .. сейчас itz рабочий ... большое спасибо – user2786086

+0

Не забудьте принять ответы на вопросы, на которые были ответили! Дополнительную информацию см. На странице http://stackoverflow.com/help/someone-answers. – grantnz

0

Кстати,

public string Emp_ID; 
public string emp_ID 
    { 
     get 
     { 
      return emp_ID; 
     } 
     set 
     { 
      emp_ID = value; 
      OnPropertyChanged("Emp_ID"); 
     } 
    }

это вызовет рекурсивный вызов и настройки, изменять emp_id в emp_id

источник

2013-09-20 11:05:13 Maximus

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