Problem in calling web services using javascript

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When i am trying to call my web service method ie:

C#

public Sample () {

[WebMethod]
public string CheckUserNameAvailability(string userName)
    {
        SqlConnection cn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["Connect"].ConnectionString);
        SqlDataAdapter dap = new SqlDataAdapter("select Email_Id from User_Registration where Email_Id='" + userName + "'", cn);
        DataSet ds = new DataSet();
        dap.Fill(ds);
        if (ds.Tables[0].Rows.Count != 0)
        {
            return "Name Already Exist";
        }
        else
        {
            return "Available";
        }
}
}

then I am trying to make reference of this method using scripts manager ie.

ASP.NET

<asp:ScriptManager ID="ScriptManager1" runat="server">
                    <services>
                    <asp:ServiceReference Path="~/Sample.asmx" />
                    </services>

but when i calling we method in javascript function then it can't be accessible there even i am using <%@import Namespace="System.Web.Services"%> on the top of aspx page

error:-Error updating JScript Intellisense

please give me the solution how cal i access my class easily in my .aspx page

Posted 3-May-12 0:27am

Vivek_Sharma

Updated 3-May-12 2:23am

Herman<T>.Instance

v3

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Comments

Sandeep Mewara 3-May-12 7:15am

Where is your JS call? How did you made that?

Vivek_Sharma 4-May-12 1:27am

still i am facing problem with this web method in accessing it in javascript function

[WebMethod]
public static void ChangePass(string UserName,string AltEmail,string OldPass,string NewPass,string ComfPass)
{
SqlConnection con = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["Connect"].ConnectionString);
SqlDataAdapter sp = new SqlDataAdapter("select Password from User_Registration where Password='" + OldPass + "'", con);
DataSet ds = new DataSet();
sp.Fill(ds);
if (ds.Tables[0].Rows.Count != 0)
{
SqlDataAdapter dap = new SqlDataAdapter("update User_Registration set Password='" + ComfPass + "' where Email_Id='" + UserName + "'", con);
DataSet ds1 = new DataSet();
dap.Fill(ds1);
MailMessage mail = new MailMessage("tech@xyz.com", AltEmail);
mail.Body = "Email:-" + mail.From + "<br/>" + "New Password:-" + ComfPass;
mail.IsBodyHtml = true;
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.gmail.com";
smtp.EnableSsl = true;
NetworkCredential NetCre = new NetworkCredential();
NetCre.UserName = "tech@xyz.com";
NetCre.Password = "abc@123";
smtp.UseDefaultCredentials = true;
smtp.Credentials = NetCre;
smtp.Port = 587;
smtp.Send(mail);

}
}

Sandeep Mewara 4-May-12 2:36am

Dude, where in Javascript you made a call to your webservice? Syntax? Line of action?

1 solution

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**tanweer** · Answer 1 · 2012-05-03T02:38:00

Hi,
Use ajax call to hit the Webservice. you need to make your WebMethod static now

ajax call works like this:

JavaScript

function CheckUserNameAvailability(username) {
          try {
              $.ajax({
                  type: "POST",
                  url: "YourForm.aspx/CheckUserNameAvailability",
                  data: "{'userName':'" + username + "'}",
                  contentType: "application/json; charset=utf-8",
                  dataType: "json",
                  success: function (msg) {
                      if (msg.d == "Available") {
                          alert('Available..........');
                      }
                  },
                  error: function () {
                      alert('Error occured!');
                  }
              });
          } catch (e) {
              alert(e);
          }
      }

Here replace your page name with YourForm.aspx in the url.
send value to parameter username when you call the Method in javascript as