How can I delete the original image and replace it with a new one but with the same name ?

Question

using System;  
using System.Collections.Generic;  
using System.Drawing;  
using System.Drawing.Text;  
using System.Globalization;  
using System.Text;  
using System.Windows;  
using System.Windows.Media;  
using System.Windows.Media.Imaging;  
  
namespace Wpf_Download_Files  
{  
    class DrawOnImage  
    {  
        public void DrawText(String text, String path)  
        {  
            BitmapImage bi = new BitmapImage();  
            bi.BeginInit();  
            bi.UriSource = new Uri(path, UriKind.RelativeOrAbsolute);  
            bi.EndInit();  
  
            string sText = text;  
            int nTextHeight = 60;  
            DrawingVisual drawingVisual = new DrawingVisual();  
            using (DrawingContext drawingContext = drawingVisual.RenderOpen())  
            {  
                drawingContext.DrawImage(bi, new Rect(0, 0, bi.Width, bi.Height));  
  
                Rect rect = new Rect(0, bi.Height, bi.Width, nTextHeight);  
                drawingContext.DrawRectangle(System.Windows.Media.Brushes.LightGray, new System.Windows.Media.Pen(System.Windows.Media.Brushes.Red, 2), rect);  
  
                  
  
                FormattedText formattedText= new FormattedText(sText, CultureInfo.InvariantCulture,  
    FlowDirection.LeftToRight, new Typeface("Ariel"), 12, System.Windows.Media.Brushes.Red,  
    VisualTreeHelper.GetDpi(drawingVisual).PixelsPerDip);  
                  
                formattedText.TextAlignment = TextAlignment.Center;  
                double nX = bi.Width / 2;  
                double nY = bi.Height + nTextHeight / 2;  
                System.Windows.Point pt = new System.Windows.Point(nX, nY - formattedText.Height / 2);  
                drawingContext.DrawText(formattedText, pt);  
            }  
            RenderTargetBitmap bmp = new RenderTargetBitmap((int)bi.Width, (int)bi.Height + nTextHeight, 96, 96, PixelFormats.Pbgra32);  
            bmp.Render(drawingVisual);  
  
            GifBitmapEncoder gif = new GifBitmapEncoder();  
            gif.Frames.Add(BitmapFrame.Create(bmp));  
  
            System.IO.File.Delete(path);  
  
            using (System.IO.Stream stm = System.IO.File.Create(@"d:\Downloaded Images\Radar\radImage00001.gif"))  
            {  
                gif.Save(stm);  
            }  
        }  
    }  
}  

I'm getting exception that the file in path is busy when trying to delete it.

If not trying to delete it will work fine but will create new radImage00001.gif file and I want instead to replace the current image in path with the new one with the same name. not to create a new file but to replace.

Answer 1

To unlock the file,

Replace

BitmapImage bi = new BitmapImage();
bi.BeginInit();
bi.UriSource = new Uri(path, UriKind.RelativeOrAbsolute);
bi.EndInit();

by

            BitmapImage bi = new BitmapImage();
            var stream = System.IO.File.OpenRead(path);
            bi.BeginInit();
            bi.CacheOption = BitmapCacheOption.OnLoad;
            bi.StreamSource = stream;
            bi.EndInit();
            stream.Close();
            stream.Dispose();

Answer 2

Is path being used in the calling code?