Periodically Invoking Asp.Net Web Service

This is a quick post on a method that explains how to invoke Asp.Net Web Service(s) periodically. It is inevitable, that once in a while there will be a requirement where you will be pushing / pulling data via Asp.Net Web Services periodically. As much this is a common requirement, however there are several ways in which it can be engineered.

JQuery Call, JavaScript Timer based call, Asp ScriptManager control to invoke web service are some of the ways to name a few.

In the code below, I have used a Asp:Timer object to fire a desired web service periodically (every 1 minute or 60 seconds or 60,000 milliseconds). I don’t claim this is innovative way of doing this. Needless to say, this could be just one of the ways in which such a requirement can be achieved.

Declare your Asp:Timer control; requires a ScriptManager Control to work

<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:Timer ID="WebSvcPeriodInvoke" runat="server" Interval="60000"></asp:Timer>

Declare the native Tick() method for Asp.Timer; code-behind

Protected Sub WebSvcPeriodInvoke_Tick(sender As Object, e As System.EventArgs) Handles WebSvcPeriodInvoke.Tick

' Invoke WebService Programmatically

Dim WebSvcObj As NameOfWebService = New NameOfWebService
Dim _MethodCall As int = WebSvcObj.NameOfYourMethod(Arg1, Arg2)

' Do Something with _MethodCall Variable

End Sub

Using the method above, your .aspx page is now using a Asp:Timer control to invoke an Asp.Net Web Service periodically after every 1 minute. This is super handy, you can easily pass in parameters if required to Web Service and play with the result or be imaginative where required.


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