Programmatically assign a UserControl to a DataTemplate

Luca Iovene 0 Reputation points
2024-09-19T11:04:16.69+00:00

I'm trying to create a datagrid only by using c# without xaml because at compile time i don't know anything about the data that i will receive.

So i need to use the only DataGridTemplateColumn but to archieve this i need to assign a value to the dataTemplate property.

Somewhere i read about the possibility to use a generic usercontrol as dataTemplate but without success.

So how can i archieve this without using xaml defined datatemplate?

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.NET
Microsoft Technologies based on the .NET software framework.
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  1. Jiale Xue - MSFT 44,921 Reputation points Microsoft Vendor
    2024-09-19T14:36:51.17+00:00

    Hi @Luca Iovene , Welcome to Microsoft Q&A,

    Dynamically create the DataTemplate of DataGridTemplateColumn in C#, without relying on XAML, and use FrameworkElementFactory to build the template content. You can dynamically generate a DataTemplate for DataGridTemplateColumn and define different UI elements for each cell.

    using System.Collections.Generic;
    using System.Windows;
    using System.Windows.Controls;
    using System.Windows.Data;
    
    namespace _xxx
    {
        /// <summary>
        /// Interaction logic for MainWindow.xaml
        /// </summary>
        public partial class MainWindow : Window
        {
            public MainWindow()
            {
                InitializeComponent();
                DynamicDataGrid dynamicDataGrid = new DynamicDataGrid();
                DataGrid dataGrid = dynamicDataGrid.CreateDataGrid();
                MainGrid.Children.Add(dataGrid);
                List<MyData> data = new List<MyData>
                {
                    new MyData { Value = "Item 1" },
                    new MyData { Value = "Item 2" },
                    new MyData { Value = "Item 3" }
                };
                dataGrid.ItemsSource = data;
            }
            public class MyData
            {
                public string Value { get; set; }
            }
    
    ///Programmatically assign a UserControl to a DataTemplate
            public class DynamicDataGrid
            {
                public DataGrid CreateDataGrid()
                {
                    DataGrid dataGrid = new DataGrid();
                    DataGridTemplateColumn templateColumn = new DataGridTemplateColumn();
                    templateColumn.Header = "Dynamic Column";
                    DataTemplate cellTemplate = new DataTemplate();
                    FrameworkElementFactory textBlockFactory = new FrameworkElementFactory(typeof(TextBlock));
                    Binding binding = new Binding("Value");
                    textBlockFactory.SetBinding(TextBlock.TextProperty, binding);
                    cellTemplate.VisualTree = textBlockFactory;
                    templateColumn.CellTemplate = cellTemplate;
                    dataGrid.Columns.Add(templateColumn);
                    return dataGrid;
                }
            }
        }
    }
    
    

    Best Regards,

    Jiale


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