how to save image base64 format in web api

Asim Jena

8y11.2kLearn iOS Programming

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

11 Replies

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Ravindra Singh8y ago
[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; }
}
}
0
Jenith Thakkar8y ago
Okay then replace this
public string ctg_img { get; set; }
to this
public byte[] ctg_img { get; set; }

and try again
-1
Asim Jena8y ago
public string CreateUpdateCategory(CategoryMaster Obj)
{
string Message = null;
errorMessage = CategoryBalObj.CreateUpdateCategory(Obj);
return Message;
}
0
Asim Jena8y ago
no i donot get string value
0
Jenith Thakkar8y ago
Have you got base64 string value in ctg_img field if yes then store directly that value in database using nvarchar
0
rajendra singh8y ago
Could you send code of below function

CategoryAppServiceObj.CreateUpdateCategory(request);
0
Asim Jena8y ago
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; }
}
0
Jenith Thakkar8y ago
Okay show me your CategoryMaster Model Properties and CreateUpdateCategory This Method
0
Asim Jena8y ago
[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
0
Jenith Thakkar8y ago
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();
}
0
rajendra singh8y ago
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.
0