使用json自动增量计数器（与按钮不同） [英] Autoincrement counter (like and unlike buttons) using json

问题描述

Hello dear ones,



i want to have 2 buttons in a <asp:datagrid> , say like and unlike buttons, i want to increment each click and save in database along with the user's ID. i am asked to use json jquery, further process using webservice to which i am very new.

could you please help with with complete code? i am in trouble



Here is the code, please feel free to modify the way you want:

<script type=""mce-text/javascript"">{  
        $("[id*=lnkagree]").live("click", function () {  
            var id = $(this).attr('CommandArgument');  
            var act = $(this).attr('CommandName');  
   
            if (id != '' && act != '') {  
                $.ajax({  
                    type: "POST",  
                    contentType: "application/json; charset=utf-8",  
                    url: "Default.aspx/action",  
                    data: "{'id':'" + id + "','action':'" + act + "'}",  
                    dataType: "json",  
                    success: function (data) {  
                        var obj = data.d;  
                        if (obj == 'true') {  
   
                        }  
                    },  
                    error: function (result) {  
                        pnl_login.Visible = True;  
                        txteml.Focus();  
                        alert("Error");  
                    }  
                });  
            }  
            else {  
                alert('')  
                return false;  
            }  
   
            return false;  
        });  
       
</script>  

<asp:DataGrid ID="sample" runat="server" >  
      <Columns>  
                                                            <asp:TemplateColumn>  
                                                                   
                                                                <ItemTemplate >  
                                                             
                                                                             <asp:ImageButton runat="server" ID="lnkagree"   ImageUrl="~/likesml.png" ClientIDMode="Static"  

                                                                                    CausesValidation="False" CommandName="Like" CommandArgument='<%#DataBinder.Eval(Container.DataItem, "id")%>' /><asp:Image ID="liked" runat="server" Visible="false" ImageUrl="~/liked.png" />  <asp:Label  runat="server" ID="like_no" ForeColor="Green"  Text='<%#DataBinder.Eval(Container.DataItem, "flike")%>'></asp:Label>  
                                                                                      
                                                                                       
                                                                                <asp:ImageButton runat="server" ID="lnkdisagree" ImageUrl="~/dislikesml.png" ClientIDMode="Static"  CausesValidation="False" CommandName="Dislike" CommandArgument='<%#DataBinder.Eval(Container.DataItem, "id")%>'  />  
                                                                                    <asp:Image ID="disliked" runat="server" Visible="false" ImageUrl="~/disliked.png" />  
                                                                                    <asp:Label   runat="server" ForeColor="Red" ID="dislike_no" Text='<%#DataBinder.Eval(Container.DataItem, "fdislike")%>'></asp:Label>  
                                                                                  
                                                                            </div>  
  
  
                                                                </ItemTemplate>  
                                                            </asp:TemplateColumn>  
       </Columns>  
                                                         
   </asp:DataGrid>  

<WebMethod()> _  
    Public Shared Function action(ByVal rid As String, ByVal action As String) As String  
   
//DB insertion  
   
End Function  

推荐答案

（ [id * = lnkagree]）。live（ 点击， function （）{
var id =

("[id*=lnkagree]").live("click", function () { var id =

（ this ）。attr（' CommandArgument'）;
var act =

(this).attr('CommandArgument'); var act =

（ this ）。 attr（' CommandName'）;

if （id！= ' '&& act！= ' '）{

(this).attr('CommandName'); if (id != '' && act != '') {

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