Grid view bind problem using json

Question

Hello friends i have a cod for binding grid view its working fine when i get value in alert but not appending in grid view

after appending grid view still showing empty

Tell me what i am doing wrong my code given below

 

function savekeyword() {

$.ajax({

type: "POST",

url: "add-manage-keywords.aspx/savekeyword",

data: "{'category':'" + $("#<%=catdrop.ClientID %>").val() + "','keyword':'" + $("#Text1").val() + "','status':'" + $("#sta").val() + "'}",

contentType: "application/json; charset=utf-8",

dataType: "json",

success: function (a) {

GetCustomers();

},

});

};

function GetCustomers() {

$.ajax({

type: "POST",

url: "add-manage-keywords.aspx/GetCustomers",

data: '{}',

contentType: "application/json; charset=utf-8",

dataType: "json",

success: function (result) {

debugger;

$("#gvCustomers").find("tr:gt(0)").remove();

for (var i = 0; i < result.d.length; i++) {

$("#gvCustomers").append("<tr><td>" + result.d[i].keyword + "</td><td>" + result.d[i].category + "</td><td>" + result.d[i].catid + "</td><td>" + result.d[i].status + "</td></tr>");

}

},

error: function (result) {

alert("Error");

}

});

}