如何在asp.net中的代码中启用禁用按钮

I have disabled a button in javascript. On page load I need to enable it again.

我在javascript中禁用了一个按钮。在页面加载时,我需要再次启用它。

This is my code in script.

这是我的脚本代码。

$(document).ready(
function () {
    document.getElementById("<%=btnsubmit.ClientID%>").disabled = true;
});

In code behind,I am enabling it

在代码背后,我正在启用它

protected void Page_Load(object sender, EventArgs e)
{  
     btnsubmit.Enabled = true;
}

but its not enabled.

但它没有启用。

Can anyone please help?

有人可以帮忙吗?

5 个解决方案

#1

The server side event Page_Load always run first..So you are enabling the button first and then disabling it in the clientside $(document).ready..

服务器端事件Page_Load总是首先运行。因此,您首先启用该按钮,然后在客户端$(文档).ready中禁用它。

I don't know what is your goal.But you can solve the problem by..

我不知道你的目标是什么。但是你可以通过......解决问题。

protected void Page_Load(object sender, EventArgs e)
{  
     btnsubmit.Enabled = false;
}

Javascript..

$(document).ready(

    function () {
        document.getElementById("<%=btnsubmit.ClientID%>").disabled = false;
    });

Refer this link for extra reading...

请参阅此链接以获取额外阅读......

#2

Try with btnsubmit.disabled = false;

尝试使用btnsubmit.disabled = false;

protected void Page_Load(object sender, EventArgs e)
{  
    btnsubmit.disabled = false;
}

#3

Page load runs when the page is rendered on the server - First.
After the page gets rendered on the server it gets to the client and then the js starts running. Your page load assignment gets overridden on the clients end.

页面加载在服务器上呈现页面时运行 - 首先。页面在服务器上呈现后,它会到达客户端,然后js开始运行。您的页面加载分配在客户端被覆盖。

You can do both on the server(enable\disable).

您可以在服务器上执行这两项操作(启用\禁用)。

delete this:

$(document).ready(
function () {
    document.getElementById("<%=btnsubmit.ClientID%>").disabled = true;
});

And use this:

并使用这个:

protected void Page_Load(object sender, EventArgs e)
{  
     if(blah blah blah)
        btnsubmit.Enabled = true;
     else
        btnsubmit.Enabled = false;
}

#4

try this out , using jQuery

尝试使用jQuery

$(document).ready(function(){
    $('#buttonID/.buttonClass').removeAttr('disabled');
});

and through javascript use

并通过javascript使用

document.getElementById("buttonid").setAttribute("disabled", false);

#5

You can use asp button in front end. And choose enable false to disabled it.

你可以在前端使用asp按钮。并选择启用false以禁用它。

<asp:Button id="btnName"  runat="server" Text="Add"  Enabled="false"/>

Then you can enable it in server side.

然后您可以在服务器端启用它。

 btnName.Enabled = true;

#1