How to call StoredProcedure from JavaScript code?

Question

I have email field and label

<asp:TableRow runat="server">
                <asp:TableCell runat="server">
                    <asp:TextBox runat="server" ID="txtUserEmail" onfocusout="emailVerification()" CssClass="forTextbox ui-corner-all" PlaceHolder="Enter your email"></asp:TextBox>
                </asp:TableCell>
                <asp:TableCell runat="server">
                    <asp:ScriptManager runat="server" ID="smForEmail"></asp:ScriptManager>
                    <asp:UpdatePanel runat="server" ID="upLblEmail">
                        <ContentTemplate>
                            <asp:Label runat="server" ID="lblEmail"></asp:Label>
                        </ContentTemplate>
                    </asp:UpdatePanel>
                </asp:TableCell>
            </asp:TableRow>

And some other fields as well.

I want when user move to next field onfocusout="emailVerification()" method is called. In this method I want to check either email is exists in database or not. For this I write stored procedure.

USE [CDistributors]
GO
/****** Object:  StoredProcedure [dbo].[sp_InsertUser]    Script Date: 2/17/2016 2:50:05 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER procedure [dbo].[sp_InsertUser]
(@Email varchar(50) = null,
@ReturnValue int = null)
As
Begin
SET NOCOUNT ON;
IF EXISTS (SELECT UserId from Users where Email = @Email)
Begin

    return 0; -- Email already registered
End 
Else
Begin
    return 1; -- Email is not registered yet
End
End

And JavaScript function is

// code for email verification
$(function () {
    function emailVerification() {
         // What code to call stored procedure that return integer
    }
});

Please help.

this is very bad idea. You should make server side POST/GET validation method and ask this method from javascript. — Sebastian 506563
– Sebastian 506563, Commented Feb 17, 2016 at 10:09

makison · Accepted Answer · 2016-02-17 10:50:32Z

1

You can make web service for database call methods it or make it as webmethod on the page

IF you are using .Net Framwork 4 or later you can specify ClientIDMode="Static" for controls to have on client the same Id as you specified

<asp:TextBox runat="server" ID="txtUserEmail"  ClientIDMode="Static" onfocusout="emailVerification()" CssClass="forTextbox ui-corner-all" PlaceHolder="Enter your email"></asp:TextBox>

Here WebMethod call example

// code for email verification
$(function () {
    function emailVerification() {
        // What code to call stored procedure that return integer
        var email = $('#txtUserEmail').val();
        jQuery.ajax({
            url: 'yourPage.aspx/VerifyEmail',
            type: "POST",
            data: "{'email' :' " + email + "'}",
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            beforeSend: function () {
                alert("Maybe you need some stuff before! ");
            },
            success: function (data) { alert(data.d); },
            failure: function (msg) { alert("Something go wrong! "); }
        });
    }
});

code behind file

[System.Web.Services.WebMethod]
public static int VerifyEmail(string email)
{
    //Your verification code 
    return 1;
}

answered Feb 17, 2016 at 10:50

makison

3932 silver badges11 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Salman Mushtaq Over a year ago

Thanks Aleksey, its solve my issue. But I make little changes instead of giving pageName.aspx I make Web services and it work fine. Else it gives some security error of password fields. Once again thanks.

Collectives™ on Stack Overflow

How to call StoredProcedure from JavaScript code?

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related