Add IQueryable.ToArray

Src/Asp.Net/SqlServerTest/Demos/1_Query.cs

@@ -326,6 +326,7 @@ namespace OrmTest.Demo
             var getAll2 = db.Queryable<Student>().Select(it=>it.Name.Substring(0,4)).ToList();
             var getAll22 = db.Queryable<Student>().ToDataTable();
             var getAll222 = db.Queryable<Student>().ToJson();
+            var getAll22222 = db.Queryable<Student>().ToArray();
             var getAll2222 = db.Queryable<Student>().OrderBy(it=>it.Name.Length).ToJson();
             var getAll3 = db.Queryable<Student>().OrderBy(it => new { it.Id, it.Name }).GroupBy(it => new { it.Id, it.Name }).Select<object>("id").ToList();
             var getRandomList = db.Queryable<Student>().OrderBy(it => SqlFunc.GetRandom()).ToList();

Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs

@@ -652,6 +652,14 @@ namespace SqlSugar
         {
             return _Avg<TResult>(expression);
         }
+        public virtual T[] ToArray() {
+
+            var result = this.ToList();
+            if (result.HasValue())
+                return result.ToArray();
+            else
+                return null;
+        }
         public virtual string ToJson()
         {
             if (IsCache)

Src/Asp.Net/SqlSugar/Interface/IQueryable.cs

@@ -119,6 +119,7 @@ namespace SqlSugar
         Task<TResult> AvgAsync<TResult>(Expression<Func<T, TResult>> expression);
 
         List<T> ToList();
+        T[] ToArray();
         Task<List<T>> ToListAsync();
 
         string ToJson();