public async Task <string> addCountriesAsync(utblMstCountries model)
{
try
{
if (model.CountryID == 0)
{
objDB.utblMstCountries.Add(model);
await objDB.SaveChangesAsync();
return("New Country Details Added");
}
else
{
utblMstCountries curObj = await objDB.utblMstCountries.FindAsync(model.CountryID);
curObj.CountryName = model.CountryName;
await objDB.SaveChangesAsync();
return("Country Details Updated");
}
}
catch (Exception ex)
{
return("Error: " + ex.Message);
}
}
public async Task <string> deleteCountriesAsync(long id)
{
try
{
utblMstCountries curObj = await objDB.utblMstCountries.FindAsync(id);
objDB.utblMstCountries.Remove(curObj);
await objDB.SaveChangesAsync();
return("Country Details Removed");
}
catch (SqlException ex)
{
if (ex.Errors.Count > 0) // Assume the interesting stuff is in the first error
{
switch (ex.Errors[0].Number)
{
case 547: // Foreign Key violation
return("This record has dependencies on other records, so cannot be removed.");
default:
return("Error: " + ex.Message);
}
}
return("Error while operation. Error Message: " + ex.Message);
}
catch (Exception ex)
{
return("Error: " + ex.Message);
}
}
public async Task <string> AddCountries(utblMstCountries model)
{
if (ModelState.IsValid)
{
return(await objDal.addCountriesAsync(model));
}
string messages = string.Join("; ", ModelState.Values
.SelectMany(x => x.Errors)
.Select(x => x.ErrorMessage));
return("Operation Error: " + messages);
}
