public async Task <(bool success, string error)> Add(DbModel.User user, CancellationToken cancellationToken = default(CancellationToken))
{
context.Users.Add(user);
try
{
var result = await context.SaveChangesAsync(cancellationToken);
}
catch (DbUpdateException)
{
return(false, "用户名已经存在");
}
return(true, null);
}
public async Task <(bool success, string error)> Update(DbModel.User user, CancellationToken cancellationToken)
{
context.Users.Update(user);
try
{
await context.SaveChangesAsync(cancellationToken);
}
catch (DbUpdateConcurrencyException)
{
return(false, "用户数据已更改");
}
catch (DbUpdateException)
{
return(false, "用户名冲突");
}
return(true, null);
}
public static async Task <bool> CreateNewUser(DbModel.User user)
{
//return await Login.CreateUser(user);
return(false);
}
public async Task Delete(DbModel.User user, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
context.Users.Remove(user);
await context.SaveChangesAsync(cancellationToken);
}
