/*ReadGeoData
* Takes nothing
* Returns List of all GeoData in DB
*/
public static List <GeoDataModel> ReadGeoData()
{
List <GeoDataModel> GeoDataList = new List <GeoDataModel>();
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand("SELECT * FROM dbo.GeoTable", connection))
{
connection.Open();
SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
GeoDataModel data = new GeoDataModel
{
ID = reader.GetInt32(0),
PostalCode = reader.GetInt32(1),
City = reader.GetString(2),
Population = reader.GetInt32(3),
Temperature = reader.GetDouble(4)
};
GeoDataList.Add(data);
}
}
}
return(GeoDataList);
}
/*DeleteGeoData
* Takes in GeoDataModel object to remove
* Returns 1 if successful
* Returns 0 if not
*/
public static int DeleteGeoData(GeoDataModel RemovedGeoData)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand("DELETE FROM dbo.GeoTable WHERE ID = @ID", connection))
{
cmd.Parameters.AddWithValue("@ID", RemovedGeoData.ID);
connection.Open();
return(cmd.ExecuteNonQuery());
}
}
}
/*GeoData Functions
* This is all the functions needed for the app regarding GeoData
* FULL CRUD
*/
#region CreateGeoData
/*CreateGeoData
* Takes in GeoDataModel object to add
* Returns 1 if successful
* Returns 0 if not
*/
public static int CreateGeoData(GeoDataModel NewGeoData)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand("INSERT INTO dbo.GeoTable VALUES (@PostalCode, @City, @Population, @Temperature)", connection))
{
cmd.Parameters.AddWithValue("@PostalCode", NewGeoData.PostalCode);
cmd.Parameters.AddWithValue("@City", NewGeoData.City);
cmd.Parameters.AddWithValue("@Population", NewGeoData.Population);
cmd.Parameters.AddWithValue("@Temperature", NewGeoData.Temperature);
connection.Open();
return(cmd.ExecuteNonQuery());
}
}
}
/*UpdateGeoData
* Takes in GeoDataModel object to update
* Returns 1 if successful
* Returns 0 if not
*/
public static int UpdateGeoData(GeoDataModel UpdatedGeoData)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand("UPDATE dbo.GeoTable SET PostalCode = @PostalCode, City = @City, Population = @Population, Temperature = @Temperature WHERE ID = @ID", connection))
{
cmd.Parameters.AddWithValue("@PostalCode", UpdatedGeoData.PostalCode);
cmd.Parameters.AddWithValue("@City", UpdatedGeoData.City);
cmd.Parameters.AddWithValue("@Population", UpdatedGeoData.Population);
cmd.Parameters.AddWithValue("@Temperature", UpdatedGeoData.Temperature);
cmd.Parameters.AddWithValue("@ID", UpdatedGeoData.ID);
connection.Open();
return(cmd.ExecuteNonQuery());
}
}
}
/*ReturnIDGeo
* Takes GeoDataModel object to add id to
* returns GeoDataModel object
* used to fix issue with running code having no id for current GeoDataModel item
*/
public static GeoDataModel ReturnIDGeo(GeoDataModel geoData)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand("SELECT ID FROM dbo.GeoTable WHERE PostalCode=@PostalCode AND City=@City", connection))
{
cmd.Parameters.AddWithValue("@PostalCode", geoData.PostalCode);
cmd.Parameters.AddWithValue("@City", geoData.City);
connection.Open();
SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
geoData.ID = reader.GetInt32(0);
}
}
}
return(geoData);
}
