Question

我的viewModel中有DataTable属性：

public class MainViewModel()
{
    public MainViewModel() 
    {  PopulateDataTable(); }

    private DataTable employeeDataTable;
    public DataTable EmployeeDataTable
    {
        get { return employeeDataTable; }
        set
        {
            employeeDataTable = value;
            OnPropertyChanged("EmployeeDataTable");
        }
    }

    private void PopulateDataTable()
    {            
        var _ds = new DataSet("Test");
        employeeDataTable = new DataTable();
        employeeDataTable = _ds.Tables.Add("DT");
        for (int i = 0; i < 20; i++)
        {
            employeeDataTable.Columns.Add(i.ToString());
        }
        for (int i = 0; i < 20; i++)
        {
            var theRow = employeeDataTable.NewRow();
            for (int j = 0; j < 20; j++)
            {
                if (j % 2 == 0)
                {                        
                    theRow[j] = 1;
                }
                else
                    theRow[j] = false;
            }
            employeeDataTable.Rows.Add(theRow);
        }
    }
}

我在XAML中创建了DataTemplates：

<Window.Resources>
    <DataTemplate x:Key="IntTemplate">
        <StackPanel>
           <Label Content="Integer"/>
           <TextBlock Text="{Binding Path=WhatShouldIWriteHere?}"/>
        </StackPanel>
    </DataTemplate>
    <DataTemplate x:Key="BooleanTemplate">
        <StackPanel>
           <Label Content="Boolean"/>
           <CheckBox IsEnabled="{Binding Path=WhatShouldIWriteHere?}"/>
        </StackPanel>
    </DataTemplate>
</Window.Resources>

Window的代码隐藏使用必要的DataTemplate：

    private void DataGrid_AutoGeneratingColumn(object sender, DataGridAutoGeneratingColumnEventArgs e)
    {
        DataTemplate dt = null;            

        switch (e.PropertyType.ToString())
        {
            case "System.Int32":
                dt = (DataTemplate)Resources["IntegerTemplate"];
                break;
            case "System.Boolean":
                dt = (DataTemplate)Resources["BooleanTemplate"];
                break;
        }
        if (dt != null)
        {
            DataGridTemplateColumn c = new DataGridTemplateColumn()
            {
                CellTemplate = dt,
                Header = e.Column.Header,
                HeaderTemplate = e.Column.HeaderTemplate,
                HeaderStringFormat = e.Column.HeaderStringFormat,
                SortMemberPath = e.PropertyName 
            };
            e.Column = c;
        }
    }

我的问题是我应该在DataTemplates的控件（TextBlock和CheckBox）的绑定中写什么？

    <DataTemplate x:Key="IntTemplate">
        <StackPanel>
           <Label Content="Integer"/>
           <TextBlock Text="{Binding Path=WhatShouldIWriteHere?}"/>
        </StackPanel>
    </DataTemplate>
    <DataTemplate x:Key="BooleanTemplate">
        <StackPanel>
           <Label Content="Boolean"/>
           <CheckBox IsEnabled="{Binding Path=WhatShouldIWriteHere?}"/>
        </StackPanel>
    </DataTemplate>

Answer 1

.NET 4.X和仅限上限的解决方案

查看DLR DynamicObject data type，您可以定义从动态继承的自有类型并绑定到该类型的属性，然后覆盖TryGetMembers解析请求的数据

您的类型应该使用（通过聚合）该DataTable实例

如何在不知道属性名称的情况下在DataTemplate中设置绑定？ DataGrid，DataTable

1 个答案: