我是一个MVVM的新手。我在我的项目中使用WPF和MVVM。所以在开始编写应用程序之前,我正在测试一些东西。
我的页面(EmpDetailsWindow.xaml)像这样
<Grid>
<DataGrid Name="dgEmployee" Grid.Row="0" AutoGenerateColumns="True" ItemsSource="{Binding EmployeeDataTable}" CanUserAddRows="True" CanUserDeleteRows="True" IsReadOnly="False" />
<Button x:Name="btnSubmit" Content="Submit" Command="{Binding SubmitCommand}" CommandParameter="sample param" HorizontalAlignment="Left" Margin="212,215,0,0" VerticalAlignment="Top" Width="75"/>
</Grid>
我的模型(EmpDetailsWindowViewModel)如下:
public class EmpDetailsWindowViewModel : INotifyPropertyChanged
{
public ICommand SubmitCommand { get; set; }
public EmpDetailsWindowViewModel()
{
EmployeeDataTable = DataTableCreator.EmployeeDataTable();
GenderDataTable = DataTableCreator.GenderDataTable();
SubmitCommand = new SubmitCommand();
}
DataTable _employeeDataTable;
public DataTable EmployeeDataTable
{
get { return _employeeDataTable;}
set
{
_employeeDataTable = value;
RaisePropertyChanged("EmployeeDataTable");
}
}
DataTable _genderDataTable;
public DataTable GenderDataTable
{
get { return _genderDataTable; }
set
{
_genderDataTable = value;
RaisePropertyChanged("GenderDataTable");
}
}
public event PropertyChangedEventHandler PropertyChanged;
public void RaisePropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
}
datagrid已成功地绑定到datatable。现在我有一个名为“Gender”的列在datagrid中。这应该是一个下拉框,下拉框的项目源来自视图模型的GenderDataTable。我该如何实现这个功能?