Sending graphics from the picurBox to the server FTP (Visual C++)

private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {

;

System::Double PI=3.1415926535;

System::Int64 Width=pictureBox1->Width/2;

 

System::Double x,y,z,v,i;

Graphics^ g=pictureBox1->CreateGraphics();

System::Drawing::Color my_color;

Random^ random_value=gcnew Random();

for(i=(-2.*PI);i<(2.*PI);i+=0.03)

{

x=Width*sin(i);

y=Width*cos(i);

v=Width*1.0;

z=(-1.0*Width*sin(i));

my_color=System::Drawing::Color::FromArgb(random_value->Next(255),random_value->Next(255),

random_value->Next(255));

Pen^ my_pen=gcnew Pen(my_color);

g->DrawLine(my_pen,int((1.0*Width)+x),int((1.0*Width)+y),int((1.0*Width)+z),int((1.0*Width)+v));

}

}

private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {

Close();

}

private: System::Void button3_Click(System::Object^  sender, System::EventArgs^  e) {

System::String^ file_Name=textBox1->Text;

System::String^ FTP_Name=textBox2->Text;

pictureBox1->Image->Save(file_Name);

Uri^ uri_adress=gcnew Uri("ftp://"+FTP_Name+"/"+Path::GetFileName(file_Name));

FtpWebRequest^ my_req=dynamic_cast<FtpWebRequest^>(WebRequest::Create(uri_adress));

my_req->Credentials=gcnew

NetworkCredential("anonymus","my_name@server.com");

my_req->Method=WebRequestMethods::Ftp::UploadFile;

FileStream^ send_file=gcnew FileStream(file_Name,FileMode::Open);

Stream^ my_stream=my_req->GetRequestStream();

System::Int64 bytes;

array<Byte> ^ table=gcnew array<Byte>(1024);

do

{

bytes=send_file->Read(table,0,1024);

my_stream->Write(table,0,bytes);

}while(bytes!=0);

my_stream->Close();

 

}

};

}