不得不說DataTemplate是WPF中的一項(xiàng)重要技術(shù)組成，可以方便讓我們實(shí)現(xiàn)各種各樣的UI樣式，大大豐富了應(yīng)用程序的界面設(shè)計(jì)。通常我們都會在XAML文件中定義出具體的DataTemplate, 我舉一個ListView的例子：

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Foreground="White" ItemsSource="{Binding}" Style="{DynamicResource
SuperListViewStyle}" ItemContainerStyleSelector="{StaticResource
listViewItemStyleSelector}" x:Name="lvExecutionTable" >
                        
                            
                                
                                    
                                        
                                            
IsChecked="{Binding Path=IsSelected}"/>
                                        
                                    
                                    
Tag="IsSelected"/>
                                
                                
                                    
                                        
                                            
Foreground="{Binding Path=IsComfirmed, Converter={StaticResource
IsComfirmedToColorConverter}}"/>
                                        
                                    
                                    
Tag="IsComfirmed"/>
                                
                                
                                    
Tag="MarketIndicator"/>
                                
                                
                                    
                                        
                                            
                                        
                                    
                                    
Tag="TradeType"/>
                                
                            
                        
                    

例子中對每個Column定義了簡單的DataTemplate。我遇到的問題是如果這個List View需要動態(tài)編輯列，或者新加入一些列，就是如何用代碼來實(shí)現(xiàn)對控件的DataTemplate的操作。經(jīng)過查閱MSDN的相關(guān)文檔，最好找到了解決的辦法，如下：

GridViewColumn column = new GridViewColumn();
            GridViewColumnHeader h = new GridViewColumnHeader();
            h.Content = "??????";
            h.Tag = "*******";
            column.Header = h;
            DataTemplate dt = new DataTemplate();
            FrameworkElementFactory fef = new FrameworkElementFactory(typeof

(CheckBox));
            Binding binding = new Binding();
            binding.Path = new PropertyPath("MarketIndicator");
            fef.SetBinding(CheckBox.ContentProperty, binding);
            fef.SetValue(CheckBox.ForegroundProperty, Brushes.White);
            dt.VisualTree = fef;
            column.CellTemplate = dt;
            (this.lvExecutionTable.View as GridView).Columns.Add(column);

DataTemplate對象的VisualTree屬性的類型是FrameworkElementFactory，用來存放具體的Control。FrameworkElementFactory fef = new FrameworkElementFactory(typeof(CheckBox))語句定義了DataTemplate的頂層元素是一個CheckBox控件，使用fef.SetValue方法可以設(shè)置頂層元素的屬性，如綁定等等。如果你需要定義的DataTemplate不止一個層次，那么你就要花點(diǎn)時間去設(shè)置頂層元素的Content屬性。

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