/*
public bool AddProduct(Product displayP)
{
SqlProduct p = new SqlProduct(displayP);
hasError = false;
SqlConnection con = new SqlConnection(conString);
SqlCommand cmd = new SqlCommand("AddProduct", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@ModelNumber", SqlDbType.VarChar, prodStringLen);
cmd.Parameters["@ModelNumber"].Value = p.ModelNumber;
cmd.Parameters.Add("@ModelName", SqlDbType.VarChar, prodStringLen);
cmd.Parameters["@ModelName"].Value = p.ModelName;
cmd.Parameters.Add("@UnitCost", SqlDbType.Decimal);
cmd.Parameters["@UnitCost"].Value = p.UnitCost;
cmd.Parameters.Add("@Description", SqlDbType.VarChar, 200);
cmd.Parameters["@Description"].Value = p.Description;
if (p.Description==null) cmd.Parameters["@Description"].Value = DBNull.Value;
cmd.Parameters.Add("@CategoryName", SqlDbType.VarChar, prodStringLen);
cmd.Parameters["@CategoryName"].Value = p.CategoryName;
cmd.Parameters.Add("@ProductId", SqlDbType.Int, 4);
cmd.Parameters["@ProductId"].Value = p.ProductId;
cmd.Parameters["@ProductId"].Direction = ParameterDirection.Output;
try
{
con.Open();
int rows = cmd.ExecuteNonQuery(); //create the new product in DB
p.ProductId = (int)cmd.Parameters["@ProductId"].Value; //set the returned ProductId in the SqlProduct object
displayP.ProductAdded2DB(p); //update corresponding Product ProductId using SqlProduct
}
catch (SqlException ex)
{
errorMessage = "Add SQL error, " + ex.Message;
hasError = true;
}
catch (Exception ex)
{
errorMessage = "ADD error, " + ex.Message;
hasError = true;
}
finally
{
con.Close();
}
return !hasError;
} //AddProduct()
*/
public bool AddProduct(Product displayP)
{
hasError = false;
try
{
SqlProduct p = new SqlProduct(displayP);
LinqDataContext dc = new LinqDataContext();
int? newProductId = 0;
dc.AddProduct(p.CategoryName, p.ModelNumber, p.ModelName, p.UnitCost, p.Description, ref newProductId);
p.ProductId = (int)newProductId;
displayP.ProductAdded2DB(p); //update corresponding Product ProductId using SqlProduct
}
catch (Exception ex)
{
errorMessage = "Add error, " + ex.Message;
hasError = true;
}
return !hasError;
}
//Creating a new product in the DB assigns the ProductId
//Update the ProductId from the value in the corresponding SqlProduct
public void ProductAdded2DB(SqlProduct sqlProduct)
{
this._productId = sqlProduct.ProductId;
}
/*
private string GetStringOrNull(SqlDataReader reader, string columnName)
{
return reader.IsDBNull(reader.GetOrdinal(columnName)) ? "" : (string)reader[columnName];
}
*/
/*
private const int prodStringLen = 50;
public bool UpdateProduct(Product displayP)
{
SqlProduct p = new SqlProduct( displayP);
hasError = false;
SqlConnection con = new SqlConnection(conString);
SqlCommand cmd = new SqlCommand("UpdateProduct", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@ProductId", SqlDbType.Int, 4);
cmd.Parameters["@ProductId"].Value = p.ProductId;
cmd.Parameters.Add("@ModelNumber", SqlDbType.VarChar, prodStringLen);
cmd.Parameters["@ModelNumber"].Value = p.ModelNumber;
cmd.Parameters.Add("@ModelName", SqlDbType.VarChar, prodStringLen);
cmd.Parameters["@ModelName"].Value = p.ModelName;
cmd.Parameters.Add("@UnitCost", SqlDbType.Decimal);
cmd.Parameters["@UnitCost"].Value = p.UnitCost;
cmd.Parameters.Add("@Description", SqlDbType.VarChar, 200);
cmd.Parameters["@Description"].Value = p.Description;
cmd.Parameters.Add("@CategoryName", SqlDbType.VarChar, prodStringLen);
cmd.Parameters["@CategoryName"].Value = p.CategoryName;
int rows = 0;
try
{
con.Open();
rows = cmd.ExecuteNonQuery();
}
catch (SqlException ex)
{
errorMessage = "Update SQL error, " + ex.Message;
hasError = true;
}
catch (Exception ex)
{
errorMessage = "Update error, " + ex.Message;
hasError = true;
}
finally
{
con.Close();
}
return (!hasError);
} //UpdateProduct()
*/
public bool UpdateProduct(Product displayP)
{
try
{
SqlProduct p = new SqlProduct(displayP);
LinqDataContext dc = new LinqDataContext();
dc.UpdateProduct(p.ProductId, p.CategoryName, p.ModelNumber, p.ModelName, p.UnitCost, p.Description);
}
catch (Exception ex)
{
errorMessage = "Update error, " + ex.Message;
hasError = true;
}
return (!hasError);
}
//Creating a new product in the DB assigns the ProductId
//Update the ProductId from the value in the corresponding SqlProduct
public void ProductAdded2DB(SqlProduct sqlProduct)
{
this._productId = sqlProduct.ProductId;
}