How to save file using SaveAs dialog box from temp folder to other location in web page from Windows application

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C#

.NET

MVC

.NET4.5

Hi,
I have integrated windows application as setup file(.msi) in web application. I can access it.
Now my problem is that onclick of save button in web page i can call SaveAs dialog from windows but the file is not storing in the local machine.
My code
This code Form.cs in windows application

 <public void="" mode="hold" />       {
           string newFilePath = string.Empty;
           saveFileDialog1 = new SaveFileDialog();
           saveFileDialog1.FileName ="filename1";
           saveFileDialog1.Filter = " ";
           if (saveFileDialog1.ShowDialog() == DialogResult.OK)
           {
             //here i will have new path
           }
           string oldFilePath = userControl1.IFilePath;
           if (System.IO.File.Exists(oldFilePath))
           {
              //old path

           }

       }


userControl in Windows application
  void SaveFile()
        {
            Form a = new Form();
            a.savebtn();
        }

I called the above method in Web application. The SaveAs dialog opens onclick of save button in web page but it does not saves the file.
Thanks in advance!