Using asmx file for uploading image from iphone - asp.net

Question

Im struggling here for a lot,
Im trying to upload an image from iphone to (iis)server folder using webservice asmx(VB.net)
Ive searched a lot and finally used the following code
- (IBAction)btnPostImages_Clicked:(id)sender {
NSMutableURLRequest *request;
request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setHTTPMethod:#"POST"];
[request setURL:[NSURL URLWithString:#"http://192.168.0.2/digita/digitacampus.asmx/SaveImage"]];
NSString *boundary = [NSString stringWithString:#"---------------------------14737809831466499882746641449"];
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#",boundary];
[request addValue:contentType forHTTPHeaderField: #"Content-Type"];
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"%#\"; filename=\"%#\"\r\n",#"recFile",#"image.jpg"]dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:#"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:dt]];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:body];
NSURLConnection *conn=[[NSURLConnection alloc] initWithRequest:request delegate:self];
}
dt is NSData of image in jpeg representation
and the webmethod as follows
<WebMethod()> _
Public Function SaveImage(ByVal recFile As String) As String
Dim file As HttpPostedFile = HttpContext.Current.Request.Files("recFile")
Dim targetFilePath As String = HttpContext.Current.Server.MapPath("") + file.FileName
file.SaveAs(targetFilePath)
Return file.FileName.ToString()
End Function
Nothing happened
Is the above webmethod correct
I have also tried simply as below
- (IBAction)btnPostImages_Clicked:(id)sender {
NSURL *url = [NSURL URLWithString:#"http://192.168.0.2/digita/digitacampus.asmx/SaveImage"];
NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url];
[req addValue:#"text/xml; charset=utf-8" forHTTPHeaderField:#"Content-Type"];
[req addValue:#"image/jpeg" forHTTPHeaderField:#"Content-Type"];
[req setHTTPMethod:#"POST"];
[req setHTTPBody:dt];
NSURL *conn = [[NSURLConnection alloc] initWithRequest:req delegate:self];
}
I dont know what to do else
whats the mistake that I did
How can I identify the image was successfully uploaded or not

Answer 1

Is the URL correct? I think it should be something like: digitacampus.asmx?op=SaveImage and maybe digitalcampus.asmx
You have to convert the String to an filestream like this for example:
Dim fs As FileStream
fs.Write(System.Convert.FromBase64String(recFile), 0, pdfLength)