Call Webservice from JS, sending some data [Answered]RSS

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  imendimu

  Member

  1 Points

  3 Posts

  Call Webservice from JS, sending some data

  Feb 13, 2018 11:29 PM|imendimu|LINK

  hi,

  I have a webservice created with asp, which is:

  Imports System
  Imports System.IO
  Imports System.Text
  Imports System.Web
  Imports System.Web.Services
  Imports System.Web.Services.Protocols
  
  <System.Web.Script.Services.ScriptService()>
  <WebService(Namespace:="http://tempuri.org/")>
  <WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)>
  <Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()>
  Public Class WBS_Actions
      Inherits System.Web.Services.WebService
  
      <WebMethod()>
      Public Sub TrackAction(byval sText as string)
          Dim path As String = "c:\MyTest.txt"
          Using fs As FileStream = File.Create(path)
              Dim info As Byte() = New UTF8Encoding(True).GetBytes(sText)
              ' Add some information to the file.
              fs.Write(info, 0, info.Length)
          End Using
      End Sub
  
  End Class

  On anoter website, I have a JS that calls this webservice like this:

  function ActionDone() {
      var xhr = new XMLHttpRequest();
      xhr.open('POST', 'http://localhost:57358/WBS_Actions.asmx/TrackAction', true);
      xhr.setRequestHeader('Content-type', 'text/plain');
      xhr.send("test");    
  }

  Now, the issue is that the file is not created with that code. Instead, if I changed the webservice to the code below, the file is created, but I am missing the option to send data from JS to the webservice.

  Public Sub TrackAction()
          Dim path As String = "c:\MyTest.txt"
          Using fs As FileStream = File.Create(path)
              Dim info As Byte() = New UTF8Encoding(True).GetBytes("This is my text")
              ' Add some information to the file.
              fs.Write(info, 0, info.Length)
          End Using
  End Sub

  Any help would be much appreciated, thanks!

  imendimu

• • Reply
  Edward Z

  Contributor

  3290 Points

  1595 Posts

  Re: Call Webservice from JS, sending some data

  Feb 15, 2018 08:33 AM|Edward Z|LINK

  Hi imendimu,

  For your original method with parameter, I suggest you try code below:

     $(document).ready(function () {
          var xhr = new XMLHttpRequest();
          xhr.open('POST', 'http://localhost:61275/WBS_Actions.asmx/HelloWorld', true);
          xhr.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
          xhr.onreadystatechange = function () {
              if (xhr.readyState == 4) {
                  console.log(xhr.responseText);
              }
          }
          xhr.send("sText=" + 'test');
  
      })

  Best Regards,

  Edward

  MSDN Community Support
  Please remember to click "Mark as Answer" the responses that resolved your issue.
  If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com.
• • Reply
  imendimu

  Member

  1 Points

  3 Posts

  Re: Call Webservice from JS, sending some data

  Feb 15, 2018 01:27 PM|imendimu|LINK

  Hi,

  Adding your suggested code to the function called in the onClick of the control, nothing happens.

  function ActionDone() {
  	alert("test_0");
      $(document).ready(function () {
          alert("test_1");
          var xhr = new XMLHttpRequest();
          xhr.open('POST', 'http://localhost:57358/WBS_Actions.asmx/TrackAction', true);
          xhr.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
          alert("test_2");
          xhr.onreadystatechange = function () {
              if (xhr.readyState == 4) {
                  alert("test_3");
                  console.log(xhr.responseText);
              }
          }
          xhr.send("sText=" + 'test');
  
      })
  }

  Only the first alert("test_0"); is shown.

  Just to remind that these are two different solutions, and I test them running both of them at the same time, obviously.

  Thanks

• • Reply
  Edward Z

  Contributor

  3290 Points

  1595 Posts

  Re: Call Webservice from JS, sending some data

  Feb 19, 2018 01:23 PM|Edward Z|LINK

  Hi,

  I suggest you make a test with code below:

  function ActionDone() {
  	alert("test_0");
      
          alert("test_1");
          var xhr = new XMLHttpRequest();
          xhr.open('POST', 'http://localhost:57358/WBS_Actions.asmx/TrackAction', true);
          xhr.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
          alert("test_2");
          xhr.onreadystatechange = function () {
              if (xhr.readyState == 4) {
                  alert("test_3");
                  console.log(xhr.responseText);
              }
          }
          xhr.send("sText=" + 'test');
  }

  Best Regards,

  Edward

  MSDN Community Support
  Please remember to click "Mark as Answer" the responses that resolved your issue.
  If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com.
• • Reply
  imendimu

  Member

  1 Points

  3 Posts

  Re: Call Webservice from JS, sending some data

  Feb 19, 2018 03:10 PM|imendimu|LINK

  That works! Many thanks!