How to check jquery ajax data exists or not in ASP.NET

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Hello,
how to check data is exists or not in jquery ajax with asp.net..

$(document).ready(function () {
$("#txtFname").keyup(function () {
var findName = $("#txtFname").val()
// var len = 0;
len = findName.length;
if (findName != "") {

// alert(findName);
$.ajax
({
method: "GET",
url: "../Jquery_Examples /save_Employee_Jquery.aspx?findName=" + findName,
success: function (data) {
$("#bindData").html(data);

}
});
}
});

// bindData is HTML Div..

// my C# code.

in pageload method i get query string values..
string findName = Request.QueryString["findName"].ToString();
if (findName != null)
{
findData(findName);
}

// FinData method

private void findData(string findName)
{

try
{
conn = new SqlConnection(getConnection);

conn.Open();

string query = "select * from EmployeeData WHERE Fname LIKE @findName + '%'";
cmd = new SqlCommand(query, conn);
cmd.Parameters.AddWithValue("@findName", findName);
SqlDataReader reader = cmd.ExecuteReader();

DataTable dt = new DataTable();
dt.Load(reader);
if (dt.Rows.Count > 0)
{
GrdEmployee.DataSource = dt;
GrdEmployee.DataBind();

GrdEmployee.Visible = true;
}
}

What I have tried:

how to check Data is Exist or not Jquery AJAX in asp.net . then show message if data is found show found data and data not show not data

Posted 29-Dec-18 0:25am

RahurkarP

Updated 1-Jan-19 5:28am

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Prasad Nikumbh · Answer 1 · 2019-01-01T05:29:00

Hi,
you can check by below code in jquery.

$.ajax
({
method: "GET",
url: "../Jquery_Examples /save_Employee_Jquery.aspx?findName=" + findName,
success: function (data) {
$("#bindData").html(data);
if(<data && data!=null)
{
   alert('show found data');
}
else
{
 alert('data not show not data');
 }
}
});
}
});