how to save image base64 format in web api

Question

android code sending base64 as encode format then how to save image in web api

Ravindra Singh · Answer

[HttpPost] public HttpResponseMessage SubmitHomework(HomeWorkDTO submithomeworkdto) { try { ParentQueryResponse objresponse = new ParentQueryResponse(); SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["SiteSqlServer"].ConnectionString); SqlCommand cmd = new SqlCommand("APIServices_SubmitFile", con) { CommandType = CommandType.StoredProcedure }; if (con.State == ConnectionState.Closed) { con.Open(); if (submithomeworkdto.FileName != "" && submithomeworkdto.filebyte!="") { byte[] imageBytes = Convert.FromBase64String(submithomeworkdto.filebyte); string FileName = submithomeworkdto.FileName; String path = HttpContext.Current.Server.MapPath("~/DesktopModules/fileupload/UploadDocuments"); //Path string imgPath = Path.Combine(path, FileName); File.WriteAllBytes(imgPath, imageBytes); //Check if directory exist if (!System.IO.Directory.Exists(path)) { System.IO.Directory.CreateDirectory(path); //Create directory if it doesn't exist } } cmd.Parameters.AddWithValue("@FileName", submithomeworkdto.FileName);//added on july 2018 ravindra SqlDataAdapter adapter = new SqlDataAdapter(cmd); int roweffected = cmd.ExecuteNonQuery(); con.Close(); if (roweffected > 0) { objresponse.status = "true"; objresponse.message = "success"; objresponse.data = "File Upload successfully."; } else { objresponse.status = "false"; objresponse.message = "failure"; objresponse.data = "File Upload successfully."; } } return Request.CreateResponse(HttpStatusCode.OK, objresponse, Configuration.Formatters.JsonFormatter); } } catch (Exception exc) { Logger.Error(exc); ParentQueryResponse objresponse = new ParentQueryResponse(); objresponse.status = "false"; objresponse.message = exc.Message; objresponse.data = "Home work submission failed."; return Request.CreateResponse(HttpStatusCode.OK, objresponse, Configuration.Formatters.JsonFormatter); } public class HomeWorkDTO { public string FileName { get; set; } public string filebyte { get; set; } } public class ParentQueryResponse { public string status { get; set; } public string message { get; set; } public string data { get; set; } } }

Asim Jena · Answer

public string CreateUpdateCategory(CategoryMaster Obj) { string Message = null; errorMessage = CategoryBalObj.CreateUpdateCategory(Obj); return Message; }

Asim Jena · Answer

no i donot get string value

Jenith Thakkar · Answer

Have you got base64 string value in ctg_img field if yes then store directly that value in database using nvarchar

rajendra singh · Answer

Could you send code of below function CategoryAppServiceObj.CreateUpdateCategory(request);

Asim Jena · Answer

public class CategoryMaster { public CategoryMaster() { } public string mode { get; set; } public int ctg_code { get; set; } public string ctg_name { get; set; } public string ctg_img { get; set; } }

Jenith Thakkar · Answer

Okay show me your CategoryMaster Model Properties and CreateUpdateCategory This Method

Asim Jena · Answer

[Route("CreateUpdateCategory")] [HttpPost] public HttpResponseMessage CreateUpdateCategory(CategoryMaster request) { if (ModelState.IsValid) { CategoryAppServiceObj.CreateUpdateCategory(request); return new HttpResponseMessage(HttpStatusCode.OK); } else { return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState); } } my code like this how to solve

Jenith Thakkar · Answer

you can store that image in folder like below [HttpPost] public IActionResult Post(string base64image)//or (Ima a) ,it works too { var bytes = Convert.FromBase64String(base64image);// a.base64image //or full path to file in temp location //var filePath = Path.GetTempFileName(); // full path to file in current project location string filedir = Path.Combine(Directory.GetCurrentDirectory(), "NewFolder"); Debug.WriteLine(filedir); Debug.WriteLine(Directory.Exists(filedir)); if (!Directory.Exists(filedir)) { //check if the folder exists; Directory.CreateDirectory(filedir); } string file = Path.Combine(filedir, "a.jpg"); Debug.WriteLine(file); //Debug.WriteLine(File.Exists(file)); if (bytes.Length > 0) { using (var stream = new FileStream(file, FileMode.Create)) { stream.Write(bytes, 0, bytes.Length); stream.Flush(); } } return Ok(); }

rajendra singh · Answer

Hi, You can use below function to convert base64 string to image file private void SaveByteArrayAsImage( string fullOutputPath, string base64String) { byte [] bytes = Convert.FromBase64String(base64String); Image image; using (MemoryStream ms = new MemoryStream(bytes)) { image = Image.FromStream(ms); } image.Save(fullOutputPath, System.Drawing.Imaging.ImageFormat.Png); } Hope this will help, please let me know if there is any problem you face.

Jenith Thakkar · Answer

Okay then replace this public string ctg_img { get; set; } to this public byte[] ctg_img { get; set; } and try again