Convert Image Into Binary File And Save To Text File

Step 1. Import these two namespaces in your application. If you don't have an application, create a new Web application using Visual Studio and C#.

using System.IO;

using System.Net;

Step 2. Add a Upload File control and a button to the default WebForm.

Step 3. Write this code on the button click event handler. This code converts the selected image into a byte array and saves that into a text file.

protected void Button1_Click(object sender, EventArgs e)
{
string str = FileUpload1.FileName.ToString();
FileUpload1.PostedFile.SaveAs(Server.MapPath("~/Images/" + str.ToString()));
byte[] imgbyte =File.ReadAllBytes(Server.MapPath("~/Images/" + str.ToString()));
File.WriteAllBytes(Server.MapPath("~/Images/image1.txt"), imgbyte);
}

For more details, download the zip code.

Thanks