C# (CSharp) System.Linq Queryable.SingleOrDefault示例

示例#1

 public virtual TSource SingleOrDefault <TSource>(IQueryable <TSource> source, Expression <Func <TSource, Boolean> > predicate)
 {
     return(Queryable.SingleOrDefault <TSource>(source, predicate));
 }

示例#2

 public virtual TSource SingleOrDefault <TSource>(IQueryable <TSource> source)
 {
     return(Queryable.SingleOrDefault <TSource>(source));
 }