如何从 JavaScript 代码调用 StorageProcedure
本文关键字:调用 StorageProcedure 代码 JavaScript | 更新日期: 2023-09-27 18:35:10
>我有电子邮件字段和标签
<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>
以及其他一些领域。
我希望当用户移动到下一个字段时onfocusout="emailVerification()"
调用方法。在这种方法中,我想检查电子邮件是否存在于数据库中。为此,我编写了存储过程。
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
JavaScript 函数是
// code for email verification
$(function () {
function emailVerification() {
// What code to call stored procedure that return integer
}
});
请帮忙。
你可以为数据库调用方法制作 Web 服务,也可以在页面上将其设为 webmethod
如果您使用的是 .Net Framwork 4 或更高版本,则可以指定 ClientIDMode="Static",以使控件在客户端上具有与您指定的相同的 ID
<asp:TextBox runat="server" ID="txtUserEmail" ClientIDMode="Static" onfocusout="emailVerification()" CssClass="forTextbox ui-corner-all" PlaceHolder="Enter your email"></asp:TextBox>
这里 WebMethod 调用示例
// 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! "); }
});
}
});
代码隐藏文件
[System.Web.Services.WebMethod]
public static int VerifyEmail(string email)
{
//Your verification code
return 1;
}