C#

<interactivity:Interaction.Behaviors>
    <local:SfDataPagerBehavior_OnDemand />
    <local:SfDataPagerBehavior_File />
</interactivity:Interaction.Behaviors>

public class SfDataPagerBehavior_File : Behavior<EquipmentIdentitySetting>, IRecipient<FileFilterText>, IRecipient<UpdateDatagrid_Pdf>
{
    public SfDataPagerBehavior_File()
        {
            WeakReferenceMessenger.Default.Register<FileFilterText>(this);
            WeakReferenceMessenger.Default.Register<UpdateDatagrid_Pdf>(this);
        }
    protected override void OnAttached()
    {
        base.OnAttached();
        .
        .
        AssociatedObject.dataPager_file.OnDemandLoading += OnOnDemandLoading;
        //Some codes
        .
        .
    }
    protected override void OnDetaching()
    {
        base.OnDetaching();
        AssociatedObject.dataPager_file.OnDemandLoading -= OnOnDemandLoading;
    }
    public async void Receive(FileFilterText message)
    {
        //Some codes
    }
    public async void Receive(UpdateDatagrid_Pdf message)
    {
        //Some codes
    }
}

public class Equipment
    {
        [Key]
        public int EquipmentId { get; set; }
        [Required]
        public string EquipmentCode { get; set; }
        [Required]
        public string EquipmentTitle { get; set; }

        //Navigation Property
        [Required]
        public int CostCenterId { get; set; }
        public CostCenter CostCenter { get; set; }
        public int? InfoId { get; set; }
        [ForeignKey("InfoId")]
        public EqInfo? EqInfo { get; set; }
        public Catalogue? Catalogue { get; set; }
    }

public class EqInfo
    {
        [Key]
        public int InfoId { get; set; }
        [Required]
        public string InfoFileName { get; set; }

        //Navigation property
        public virtual List<Equipment> Equipments { get; set; }
    }

foreach (var row in AssociatedObject.dataGrid.SelectedItems)
                    {
                        var _sqliteContext = new SQLiteContext();
                        var selectedRecord = _sqliteContext.Equipments.Include(x => x.EqInfo).FirstOrDefault(x => x.EquipmentId == (int)reflector2.GetValue(row, "EquipmentId"));
                        selectedRecord.EqInfo = null;
                        list2.Add(selectedRecord);
                        _sqliteContext.Dispose();
                    }

using System.ComponentModel;

namespace TestApp
{
    // ExampleControlDesigner is an example control designer that 
    // demonstrates basic functions of a ControlDesigner. 
    public class ExampleControlDesigner : System.Windows.Forms.Design.ControlDesigner
    {
        // This Boolean state reflects whether the mouse is over the control.
        private bool mouseover = false;
        // This color is a private field for the OutlineColor property.
        private Color lineColor = Color.White;

        // This color is used to outline the control when the mouse is 
        // over the control.
        public Color OutlineColor
        {
            get
            {
                return lineColor;
            }
            set
            {
                lineColor = value;
            }
        }

        public ExampleControlDesigner()
        {
        }

        // Sets a value and refreshes the control's display when the 
        // mouse position enters the area of the control.
        protected override void OnMouseEnter()
        {
            this.mouseover = true;
            this.Control.Refresh();
        }

        // Sets a value and refreshes the control's display when the 
        // mouse position enters the area of the control.        
        protected override void OnMouseLeave()
        {
            this.mouseover = false;
            this.Control.Refresh();
        }

        // Draws an outline around the control when the mouse is 
        // over the control.    
        protected override void OnPaintAdornments(System.Windows.Forms.PaintEventArgs pe)
        {
            if (this.mouseover)
            {
                pe.Graphics.DrawRectangle(
                    new Pen(new SolidBrush(this.lineColor), 6),
                    0,
                    0,
                    this.Control.Size.Width,
                    this.Control.Size.Height);
            }
        }

        // Adds a property to this designer's control at design time 
        // that indicates the outline color to use. 
        // The DesignOnlyAttribute ensures that the OutlineColor
        // property is not serialized by the designer.
        protected override void PreFilterProperties(System.Collections.IDictionary properties)
        {
            PropertyDescriptor pd = TypeDescriptor.CreateProperty(
                typeof(ExampleControlDesigner),
                "OutlineColor",
                typeof(System.Drawing.Color),
                new Attribute[] { new DesignOnlyAttribute(true) });

            properties.Add("OutlineColor", pd);
        }
    }

    // This example control demonstrates the ExampleControlDesigner.
    [DesignerAttribute(typeof(ExampleControlDesigner))]
    public partial class UserControl1 : UserControl
    {
        public UserControl1()
        {
            InitializeComponent();
        }
    }
}

how to save Image or Bitmap to svg file

thanks