I am attempting to invoke this specific C# method:
[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public static string getJSONdata()
{
string jsonString = "";
using (SqlConnection con = new SqlConnection(connectionString))
{
con.Open();
using (SqlCommand cmd = new SqlCommand("SELECT TOP 10 * FROM DRAW ORDER BY DrawID DESC;", con))
{
using (SqlDataReader reader = cmd.ExecuteReader())
{
List<Dot> _Dot = new List<Dot>();
while (reader.Read())
{
Dot dot = new Dot();
dot.x = (int.Parse(reader["xCoord"].ToString()));
dot.y = (int.Parse(reader["yCoord"].ToString()));
if (reader["DrawID"] != DBNull.Value)
dot.i = (int.Parse(reader["DrawID"].ToString()));
_Dot.Add(dot);
}
JavaScriptSerializer jss = new JavaScriptSerializer();
jsonString = jss.Serialize(_Dot);
}
}
}
System.Diagnostics.Debug.WriteLine(" JSON: " + jsonString);
return jsonString;
}
Below is the JavaScript code I am using:
$.ajax({
url: 'Default.aspx/getJSONdata',
data: '{ }',
contentType: 'application/json; charset=utf-8',
dataType: 'json',
success: function (response) {
alert(response.d);
},
error: function (xhr, ajaxOptions, thrownError) {
alert(xhr.status);
alert(thrownError);
}
});
In my initial attempt, I encountered an ajax error. The reason for this remains unclear to me. Furthermore, I am uncertain whether I am returning the desired JSON content in the proper format. Your assistance would be greatly appreciated.
Update: It has been confirmed that the JSON string is being returned accurately.
Please note that the connectionString utilized in another function is operational, ruling out any issues with it.