DataGrid复选框无法选中

Question

我遇到了datagrid和DataGridCheckBoxClumn的问题。首先对数据网格项目的所有IM创造结构的：

public struct taxRateFromDatabase 
{ 
    public int rate { get; set; } 
    public string mark { get; set; } 
    public CheckBox c { get; set; } 
} 

而在这之后在我的课添加列，绑定等：

StackPanel tSp = new StackPanel(); 
    DataGrid taxRateDataGrid = new DataGrid(); 
    DataGridTextColumn col0 = new DataGridTextColumn(); 
    DataGridTextColumn col1 = new DataGridTextColumn(); 
    DataGridCheckBoxColumn col2 = new DataGridCheckBoxColumn(); 
    Binding b = new Binding("checkBox"); 
    b.Mode = BindingMode.TwoWay; 

    b.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged; 

    taxRateDataGrid.Columns.Add(col0); 
    taxRateDataGrid.Columns.Add(col1); 
    taxRateDataGrid.Columns.Add(col2); 

    col0.Binding = new Binding("rate"); 
    col1.Binding = new Binding("mark"); 
    col2.Binding = b; 

    CheckBox c = new CheckBox(); 
    c.Content = "a"; 


    col0.Header = "Stawka"; 
    col1.Header = "Oznaczenie"; 
    col2.Header = "Status"; 



    taxRateDataGrid.Items.Add(new taxRateFromDatabase { rate = 0, mark = "E", c = c }); 
    taxRateDataGrid.Items.Add(new taxRateFromDatabase { rate = 1, mark = "G", c = c }); 

问题是，我真的不能检查/取消选中复选框，我刚才添加。 我也尝试过没有复选框的结构定义（只是空的datagridcheckboxcolumn），但也没有工作。我在类中创建它将返回datagrid，所以我不能真正访问xaml。

任何sugestions可以理解的;）

Answer 1

我建议你使用类而不是结构（看看here），为了得到工作的结合实现INotifyPropertyChanged接口。

喜欢的东西

public class TaxRateFromDatabase : INotifyPropertyChanged 
     { 
      private int _rate; 
      public int Rate 
      { 
       get { return _rate; } 
       set { _rate = value; OnPropertyChanged("Rate"); } 
      } 

      private string _mark; 
      public string Mark 
      { 
       get { return _mark; } 
       set { _mark = value; OnPropertyChanged("Mark"); } 
      } 

      private bool _isChecked; 
      public bool IsChecked 
      { 
       get { return _isChecked; } 
       set { _isChecked = value; OnPropertyChanged("IsChecked"); } 
      } 





      public event PropertyChangedEventHandler PropertyChanged; 
      private void OnPropertyChanged(string propertyName) 
      { 
       if (PropertyChanged != null) 
        PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); 
      } 

     } 

和例如

DataGrid taxRateDataGrid = new DataGrid(); 
     DataGridTextColumn col0 = new DataGridTextColumn(); 
     DataGridTextColumn col1 = new DataGridTextColumn(); 
     DataGridCheckBoxColumn col2 = new DataGridCheckBoxColumn(); 


     taxRateDataGrid.Columns.Add(col0); 
     taxRateDataGrid.Columns.Add(col1); 
     taxRateDataGrid.Columns.Add(col2); 

     col0.Binding = new Binding("Rate"); 
     col1.Binding = new Binding("Mark"); 
     col2.Binding = new Binding("IsChecked"); 

     col0.Header = "Stawka"; 
     col1.Header = "Oznaczenie"; 
     col2.Header = "Status"; 


     List<TaxRateFromDatabase> list = new List<TaxRateFromDatabase>(); 


     list.Add(new TaxRateFromDatabase { Rate = 1, Mark = "E", IsChecked = true }); 
     list.Add(new TaxRateFromDatabase { Rate = 23, Mark = "F", IsChecked = false }); 

     taxRateDataGrid.ItemsSource = list;