如何禁用表单提交按钮?

内容来源于 Stack Overflow,并遵循CC BY-SA 3.0许可协议进行翻译与使用

  • 回答 (2)
  • 关注 (0)
  • 查看 (44)

当表单提交时,我想禁用一个按钮,以防止用户多次提交。

我已经尝试过用javascript onClick来禁用按钮,但是如果客户端验证失败了,则该按钮仍然是禁用的。

当表单成功提交时,如何禁用按钮,而不仅仅是当用户单击时?

这是一个ASP.NET表单,所以如果可能的话,我想很好地与ASP.NETAJAX页面生命周期挂钩。

提问于
用户回答回答于
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Threading;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {

         // Identify button as a "disabled-when-clicked" button...
         WebHelpers.DisableButtonOnClick( buttonTest, "showPleaseWait" ); 
    }

    protected void buttonTest_Click( object sender, EventArgs e )
    {
        // Emulate a server-side process to demo the disabled button during
        // postback.
        Thread.Sleep( 5000 );
    }
}



using System;
using System.Web;
using System.Web.UI.WebControls;
using System.Text;

public class WebHelpers
{
    //
    // Disable button with no secondary JavaScript function call.
    //
    public static void DisableButtonOnClick( Button ButtonControl )
    {
        DisableButtonOnClick( ButtonControl, string.Empty );    
    }

    //
    // Disable button with a JavaScript function call.
    //
    public static void DisableButtonOnClick( Button ButtonControl, string ClientFunction )
    {   
        StringBuilder sb = new StringBuilder( 128 );

        // If the page has ASP.NET validators on it, this code ensures the
        // page validates before continuing.
        sb.Append( "if ( typeof( Page_ClientValidate ) == 'function' ) { " );
        sb.Append( "if ( ! Page_ClientValidate() ) { return false; } } " );

        // Disable this button.
        sb.Append( "this.disabled = true;" ); 

        // If a secondary JavaScript function has been provided, and if it can be found,
        // call it. Note the name of the JavaScript function to call should be passed without
        // parens.
        if ( ! String.IsNullOrEmpty( ClientFunction ) ) 
        {
            sb.AppendFormat( "if ( typeof( {0} ) == 'function' ) {{ {0}() }};", ClientFunction );  
        }

        // GetPostBackEventReference() obtains a reference to a client-side script function 
        // that causes the server to post back to the page (ie this causes the server-side part 
        // of the "click" to be performed).
        sb.Append( ButtonControl.Page.ClientScript.GetPostBackEventReference( ButtonControl ) + ";" );

        // Add the JavaScript created a code to be executed when the button is clicked.
        ButtonControl.Attributes.Add( "onclick", sb.ToString() );
    }
}
用户回答回答于

我不太喜欢在代码背后编写所有的javascript,下面是我的最后一个解决方案。

按钮:

<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click" OnClientClick="doSubmit(this)" />

JavaScript:

<script type="text/javascript"><!--
function doSubmit(btnSubmit) {
    if (typeof(Page_ClientValidate) == 'function' && Page_ClientValidate() == false) { 
        return false;
    }    
    btnSubmit.disabled = 'disabled';
    btnSubmit.value = 'Processing. This may take several minutes...';
    <%= ClientScript.GetPostBackEventReference(btnSubmit, string.Empty) %>;    
}
//-->
</script>

扫码关注云+社区

领取腾讯云代金券

年度创作总结 领取年终奖励