动态地将列添加到WPF DataGrid中 - 类似于行的DataTemplates [英] Adding Columns Dynamically into WPF DataGrid - similar to DataTemplates for Rows

问题描述

我想动态地将列添加到WPF DataGrid中。

我想决定如何定义列，而不是定义列。要动态添加到视图中的许多列。

我不想使用以下代码，因为它允许后端代码访问UI。 

  DataGridTextColumn c1 = new DataGridTextColumn（）;

dataGrid.Columns.Add（c1）;

相反，像数据绑定，这将允许我根据我在View Model中给出的计数创建列。

有什么办法吗？

请帮助我，

谢谢，

Sasikala

解决方案

嗨SasiMuthuSella，

如果你想使用MVVM模式，我们可以使用ObservableCollection< dynamic>实现它。这里有一个供你参考的样本。

#XAML

< Window x：Class =" ColeWPFSample.DataGridSample。窗口1" 
 xmlns =" http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
 xmlns：x =" http://schemas.microsoft.com/winfx/2006/xaml" 
 xmlns：d =" http://schemas.microsoft.com/expression/blend/2008" 
 xmlns：mc =" http://schemas.openxmlformats.org/markup-compatibility/2006" 
 xmlns：local =" clr-namespace：ColeWPFSample.DataGridSample" 
 mc：Ignorable =" d" 
 Title =" Window1"高度= QUOT; 450"宽度= QUOT; 800"> 
< Grid> 
< DataGrid x：Name =" grid1" ItemsSource =" {Binding Vehicles}"> 
< / Grid> 
< / Window> 
 

#Code Behind

 public partial class Window1：Window 
 {
 public Window1（）
 {
 InitializeComponent（）; 
 this.DataContext = new Window1ViewModel（）; 
} 
} 

#ViewModel

 public class Window1ViewModel 
 { 
 public ObservableCollection< dynamic>车辆{获得;组; 
 
 public Window1ViewModel（）
 {
 using（var db = new ColeContext（））
 {
 var vehs = db.Vehicles.Select（ t => new {TitleID = t.Id，TitleMake = t.Make，TitleReg = t.RegNumber，TitleTest =" test"}）。ToList（）; 
 
 Vehicles = new ObservableCollection< dynamic>（vehs）; 
} 
} 
 
} 

祝你好运，

张龙

Hi,

I want to add columns dynamically into WPF DataGrid.

Instead of defining columns, I want to decide how many columns to add into view dynamically.

I don't want to use the below code, as it allows backend code to access UI. 

 DataGridTextColumn c1 = new DataGridTextColumn();

dataGrid.Columns.Add(c1);

Instead, something like databinding which will allow me to create columns based on count that I am giving in View Model.

Is there any way?

Please help me,

Thank you,

Sasikala

解决方案

Hi SasiMuthuSella,

If you want to use MVVM pattern, we could use ObservableCollection<dynamic> to achieve it. here is a sample for your reference.

#XAML

<Window x:Class="ColeWPFSample.DataGridSample.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:ColeWPFSample.DataGridSample"
        mc:Ignorable="d"
        Title="Window1" Height="450" Width="800">
    <Grid>
        <DataGrid x:Name="grid1" ItemsSource="{Binding Vehicles}"/>
    </Grid>
</Window>

#Code Behind

public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
            this.DataContext = new Window1ViewModel();
        }
    }

#ViewModel

public class Window1ViewModel 
    {
        public ObservableCollection<dynamic> Vehicles { get; set; }

        public Window1ViewModel()
        {
            using (var db = new ColeContext())
            {
                var vehs = db.Vehicles.Select(t=> new { TitleID = t.Id, TitleMake = t.Make, TitleReg = t.RegNumber, TitleTest ="test"}).ToList();

                Vehicles = new ObservableCollection<dynamic>(vehs);
            }
        }

    }

Best regards,

Zhanglong

这篇关于动态地将列添加到WPF DataGrid中 - 类似于行的DataTemplates的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！