public string DeleteProduct(int id)
{
string result = "";
Products product = new Products();
using (NORTHWNDEntities context = new NORTHWNDEntities())
{
try
{
product = context.Products.FirstOrDefault(p => p.ProductID == id);
context.Products.Remove(product);
context.SaveChanges();
result = "The record has deleted succesfully.";
}
catch (Exception ex)
{
result = "An error occurred during this operation.";
}
}
return result;
}
public string InsertProduct(Products product)
{
string result = "";
using (NORTHWNDEntities ent = new NORTHWNDEntities())
{
try
{
ent.Products.Add(product);
ent.SaveChanges();
result = "The product has added successfully";
}
catch (Exception)
{
result = "An error occurred during this operation.";
}
}
return result;
}
public string UpdateProduct(Products product, int id)
{
string result = "";
using (NORTHWNDEntities context = new NORTHWNDEntities())
{
Products currentproduct = new Products();
try
{
currentproduct = context.Products.FirstOrDefault(p => p.ProductID == id);
currentproduct.ProductName = product.ProductName;
currentproduct.CategoryID = product.CategoryID;
currentproduct.SupplierID = product.SupplierID;
currentproduct.QuantityPerUnit = product.QuantityPerUnit;
currentproduct.UnitPrice = product.UnitPrice;
currentproduct.UnitsInStock = product.UnitsInStock;
currentproduct.UnitsOnOrder = product.UnitsOnOrder;
currentproduct.ReorderLevel = product.ReorderLevel;
currentproduct.Discontinued = product.Discontinued;
context.SaveChanges();
result = "The record has updated succesfully.";
}
catch (Exception ex)
{
result = "An error occurred during this operation.";
}
}
return result;
}