public async Task <bool> DeleteAsync(string keyValue, string connectionString = null)
{
using (SystemContext context = DataBaseConfig.CreateContext(connectionString))
{
context.Set <T>().Remove(context.Find <T>(keyValue));
return(await context.SaveChangesAsync() > 0);
}
}
public async Task <bool> DeleteAsync(IEnumerable <T> entityList, string connectionString = null)
{
using (SystemContext context = DataBaseConfig.CreateContext(connectionString))
{
context.Set <T>().RemoveRange(entityList);
return(await context.SaveChangesAsync() > 0);
}
}
public async Task <bool> UpdateAsync(T entity, string connectionString = null)
{
using (SystemContext context = DataBaseConfig.CreateContext(connectionString))
{
context.Update(entity);
return(await context.SaveChangesAsync() > 0);
}
}