How to pass argument to the RaiseCallbackEvent? [Resolved]

Posted by Laghaterohan under Regular Expressions on 4/21/2011 | Points: 10 | Views : 6903 | Status : [Member] | Replies : 2

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Hello,

I have a textbox where in the roll number is entered ;on blur of which i want this textbox value to be pass to server side...how to achieve this? Please help....

public void RaiseCallbackEvent(string eventArgument) //Here , when my blur event fires this method is called and eventArgument is 'undefined' because of which my callback fails.....please help...how to pass value here????
{

}

Best Regards,
Rohan Laghate

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Posted by: Laghaterohan on: 4/21/2011 [Member] Starter | Points: 25

0	Thank You!!!! Best Regards, Rohan Laghate Laghaterohan, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Ndebata on: 4/21/2011 [Member] Starter | Points: 25

0	In the ASPX Page <script type="text/javascript" language="javascript"> function ReceiveServerData(arg, context) { document.getElementById('<%=yourtextbox.ClientID %>').value = arg; } function ProcessCallBackError(arg, context) { } function OnTextblur() { CallTheServer(document.getElementById('<%=yourtextbox.ClientID %>').value); } </script> In you code behind page private string MyArgument; protected override void OnLoad(EventArgs e) { base.OnLoad(e); ClientScriptManager cs = Page.ClientScript; String cbReference = cs.GetCallbackEventReference("'" + Page.UniqueID + "'", "arg", "ReceiveServerData", "", "ProcessCallBackError", false); String callbackScript = "function CallTheServer(arg, context) {" + cbReference + "; }"; cs.RegisterClientScriptBlock(this.GetType(), "CallTheServer", callbackScript, true); } public void RaiseCallbackEvent(String eventArgument) { try { MyArgument = !String.IsNullOrEmpty(eventArgument) ? eventArgument.Trim() : string.Empty; //Process the eventArgument } catch {} } public string GetCallbackResult() { return MyArgument; } Thanks, Debata Laghaterohan, if this helps please login to Mark As Answer. \| Alert Moderator

In the ASPX Page

<script type="text/javascript" language="javascript">

        function ReceiveServerData(arg, context) {

            document.getElementById('<%=yourtextbox.ClientID %>').value = arg;

        }

        function ProcessCallBackError(arg, context) { }

		function OnTextblur() {

            CallTheServer(document.getElementById('<%=yourtextbox.ClientID %>').value);

        }

</script>

In you code behind page


	private string MyArgument;

	protected override void OnLoad(EventArgs e)

    {

        base.OnLoad(e);



        ClientScriptManager cs = Page.ClientScript;



        String cbReference = cs.GetCallbackEventReference("'" + Page.UniqueID + "'", "arg", "ReceiveServerData", "", "ProcessCallBackError", false);

        String callbackScript = "function CallTheServer(arg, context) {" + cbReference + "; }";

        cs.RegisterClientScriptBlock(this.GetType(), "CallTheServer", callbackScript, true);

	}

	

	public void RaiseCallbackEvent(String eventArgument)

    {

        try

        {

            MyArgument = !String.IsNullOrEmpty(eventArgument) ? eventArgument.Trim() : string.Empty;

            //Process the eventArgument

        }

        catch {}

    }

	public string GetCallbackResult()

    {

        return MyArgument;

    }

Thanks,
Debata

Laghaterohan, if this helps please login to Mark As Answer. | Alert Moderator

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