Request.Form in WebMethod Error: an object reference is required for non-static field, method

sir if write the code it is more helpful for me

Hi kobinath,

You can't use a non-static property in a static context. If your method is static it means it shouldn't depend on the instance being called (here you are using Request which is a property of this page).

The correct way is to send your data as parameters to the function.

Check this example. Now please take its reference and correct your code.

HTML

<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript">
    function addProject() {
        var id = 1;
        $.ajax({
            type: 'POST',
            url: 'Insert.aspx/doSomething',
            dataType: 'JSON',
            data: "{ id: '" + id + "', fname: '" + $('#fname').val() + "', age: '" + $('#age').val() + "' }",
            contentType: "application/json; charset=utf-8",
            success: function (data) {
                alert("success");
            },
            error: function (xhr, status, error) {
                alert(xhr.responseText);
            }
        });
    }
</script>
<asp:TextBox runat="server" ID="fname" name="fname" />
<asp:TextBox runat="server" ID="age" name="age" />
<asp:Button Text="Save" runat="server" OnClientClick="addProject(); return false;" />

C#

[WebMethod]
public static string doSomething(int id, string fname, int age)
{
    string sql = "insert into record values('" + fname + "','" + age + "')";
    SqlCommand cmd = new SqlCommand(sql, con);
    con.Open();
    cmd.ExecuteNonQuery();
    con.Close();
    return "Sucess";
}