private static async Task <bool> CheckUserIsMemberOfGroupAsync(
Guid groupId,
Guid userId,
IGroupMemberRepository groupMemberRepository)
{
var groupMember = await groupMemberRepository.FindAsync(gm =>
gm.GroupId == groupId &&
gm.UserId == userId);
return(groupMember != null);
}
public static async Task <bool> CheckGroupMemberExistsAsync(
Guid groupId,
Guid userId,
IGroupMemberRepository groupMemberRepository)
{
var groupMember = (await groupMemberRepository.FindAsync(gm =>
gm.GroupId == groupId &&
gm.UserId == userId)).FirstOrDefault();
return(groupMember != null);
}