Execute Multiple AJAX Requests Simultaneously in ASP.Net

Hi jochk12345,

Please refer below links :

https://forums.asp.net/t/2105316.aspx?Multiple+ajax+call+not+responding+at+same+time

https://www.codeproject.com/Articles/1181613/Waiting-For-Multiple-Ajax-Requests-jQuery

https://stackoverflow.com/questions/1060539/parallel-asynchronous-ajax-requests-using-jquery

sorry...not working with the above code

Hi jochk12345,

Please refer below sample. Set async is true then simultaneously call ajax multiple.

HTML

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script type="text/javascript">
    function Show() {
        $.ajax({
            type: "POST",
            url: "CS.aspx/GetUserName",
            data: '{name: "' + $("#<%=txtUserName.ClientID%>")[0].value + '" }',
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            traditional: true,
            async: true,
            success: function OnSuccess(response) {
                alert(response.d);
            },
            failure: function (response) {
                alert(response.d);
            }
        });

        $.ajax({
            type: "POST",
            url: "CS.aspx/GetPassword",
            data: '{password: "' + $("#<%=txtPassword.ClientID%>")[0].value + '" }',
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            traditional: true,
            async: true,
            success: function OnSuccess(response) {
                alert(response.d);
            },
            failure: function (response) {
                alert(response.d);
            }
        });

        $.ajax({
            type: "POST",
            url: "CS.aspx/GetAddress",
            data: '{location: "' + $("#<%=txtLocation.ClientID%>")[0].value + '" }',
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            traditional: true,
            async: true,
            success: function OnSuccess(response) {
                alert(response.d);
            },
            failure: function (response) {
                alert(response.d);
            }
        });
    }  
</script>
<div>
    Your Name :
    <asp:TextBox ID="txtUserName" runat="server"></asp:TextBox>
    Password :
    <asp:TextBox ID="txtPassword" runat="server" TextMode="Password"></asp:TextBox>
    Location :
    <asp:TextBox ID="txtLocation" runat="server"></asp:TextBox>
    <input id="btnGetTime" type="button" value="Show Details" onclick="Show()" />
</div>

Code

C#

[System.Web.Services.WebMethod]
public static string GetUserName(string name)
{
    return "Hello name is : " + name;
}

[System.Web.Services.WebMethod]
public static string GetPassword(string password)
{
    return "Hello password is :" + password;
}
[System.Web.Services.WebMethod]
public static string GetAddress(string location)
{
    return "Hello location is :" + location;
}

VB.Net

<System.Web.Services.WebMethod()>
Public Shared Function GetUserName(ByVal name As String) As String
    Return "Hello name is : " & name
End Function

<System.Web.Services.WebMethod()>
Public Shared Function GetPassword(ByVal password As String) As String
    Return "Hello password is :" & password
End Function

<System.Web.Services.WebMethod()>
Public Shared Function GetAddress(ByVal location As String) As String
    Return "Hello location is :" & location
End Function

Screenshot