Question

我正试图通过onclientclick事件将javascript变量值传递给隐藏的feild，后面是代码。我有按钮，同时具有客户端和服务器端onclick事件

<asp:Button ID="btnSave" runat="server" Text="Save"  class="buttonstyle" 
                onclick="btnSave_Click" OnClientClick="otherdata()" />

我想从OnClientClick事件获取代码隐藏中的javascript值，然后想要从Onclick事件中将该值插入数据库表

  function otherdata() {

                var hv = $('input[id$=hdnOthers]').val();
                    var $arrT = $('#<%=gv_Others.ClientID %>').find('input:text[id$="txtEmp"]');
                    var count = [];
                    for (var i = 0; i < 10; i++) {
                        var $txt = $arrT[i];
                        count[i] = $($txt).val();

                    }
                    hv = count;
                    alert(hv);

            }

我在警报中获取值并将值分配给隐藏字段，但问题是我没有从隐藏字段中获取隐藏字段中的值...虽然我已经将值从javascript传递给隐藏字段所以为什么我我没有从代码背后获得这个价值..

protected void Insert_OtherServices()
    {
        dsJobCardTableAdapters.Select_OtherServiceTableAdapter dsother = new dsJobCardTableAdapters.Select_OtherServiceTableAdapter();

  string hdn = hdnOthers.Value;


        dsother.Insert_OtherService(hdn);

    }

Answer 1

您没有将值分配给隐藏字段。像这样调整你的javascript：

function otherdata() {
   var hvField = $('input[id$=hdnOthers]');
   var $arrT = $('#<%=gv_Others.ClientID %>').find('input:text[id$="txtEmp"]');
   var count = [];
   for (var i = 0; i < 10; i++) {
        var $txt = $arrT[i];
        count[i] = $($txt).val();
   }
   // do notice you have an array that you assign
   // but you don't say the value of count is wrong for you
   // so I only fix the bug that you don't assign the value
   // to the hidden field
   hvField.val(count); // set the field to the value of Count
   alert(count);
}

请参阅jquery doc for val()

Answer 2

为此你必须使用Jquery AJAX方法。

喜欢这个

function otherdata() {
   var hv = $('input[id$=hdnOthers]').val();
   var $arrT = $('#<%=gv_Others.ClientID %>').find('input:text[id$="txtEmp"]');
   var count = [];
   for (var i = 0; i < 10; i++) {
       var $txt = $arrT[i];
       count[i] = $($txt).val();
   }

   $.ajax({
            type: "POST",
            url: "YourASPXPage.aspx/Insert_OtherServices",
            data: {countVal : count},
            contentType: "application/json; charset=utf-8",
            dataType: "json",
        }).done(function(response) {
                //alert(response.d);
            alert("Data saved succesfully");
       });
   //alert(hv);
}

现在代码隐藏文件中的方法看起来像这样，我的意思是将其转换为页面方法，用＆＃34; WebMethod＆＃34;属性......

[WebMethod()]
public static string Insert_OtherServices(string countVal)
{
        dsJobCardTableAdapters.Select_OtherServiceTableAdapter dsother = new dsJobCardTableAdapters.Select_OtherServiceTableAdapter();

        string val = dsother.Insert_OtherService(countVal);
        return val;
}

将JavaScript变量值获取到Asp.net的Code Behind

2 个答案: