Support Select(it=>new Tupple)

Src/Asp.NetCore2/SqlSugar/Infrastructure/ContextMethods.cs

@@ -442,6 +442,16 @@ namespace SqlSugar
             var readerValues = DataReaderToDictionary(reader, tType);
             var mappingKeys = this.QueryBuilder?.MappingKeys;
             var result = new Dictionary<string, object>();
+            if (UtilMethods.IsTuple(tType, classProperties))
+            {
+                var index = 0;
+                foreach (var item in classProperties)
+                {
+                    result.Add("Item" + (index + 1), reader.GetValue(index));
+                    index++;
+                }
+                return result;
+            }
             foreach (var item in classProperties)
             {
                 var name = item.Name;

Src/Asp.NetCore2/SqlSugar/Utilities/UtilMethods.cs

@@ -18,6 +18,15 @@ namespace SqlSugar
 {
     public class UtilMethods
     {
+        public static bool IsTuple(Type tType, List<PropertyInfo> classProperties)
+        {
+            if (classProperties?.Any() != true) 
+            {
+                return false;
+            }
+            return tType.FullName?.StartsWith("System.Tuple`") == true && classProperties.FirstOrDefault()?.Name == "Item1";
+        }
+
         internal static string GetTableByDbLink(SqlSugarProvider context,string tableName, string oldTableName, TenantAttribute attr)
         {
             QueryBuilder queryBuilder=InstanceFactory.GetQueryBuilderWithContext(context);