diff --git a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider02-05.cs b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider02-05.cs
index da2b13369..91ce88de5 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider02-05.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider02-05.cs
@@ -305,6 +305,13 @@ namespace SqlSugar
             }
             return _Select<TResult>(expression);
         }
+        public virtual ISugarQueryable<TResult> SelectIF<TResult>(bool condition, Expression<Func<T,T2, TResult>> trueSelectExpression, Expression<Func<T,T2, TResult>> falseSelectExpression)
+        {
+            if (condition)
+                return Select(trueSelectExpression);
+            else
+                return Select(falseSelectExpression);
+        }
         public ISugarQueryable<TResult> Select<TResult>(Expression<Func<T,T2, TResult>> expression, bool isAutoFill)
         {
             var clone = this.Select(expression).Clone();
diff --git a/Src/Asp.Net/SqlSugar/Interface/IQueryable.cs b/Src/Asp.Net/SqlSugar/Interface/IQueryable.cs
index e34b41b0a..ed7da86b7 100644
--- a/Src/Asp.Net/SqlSugar/Interface/IQueryable.cs
+++ b/Src/Asp.Net/SqlSugar/Interface/IQueryable.cs
@@ -386,6 +386,8 @@ namespace SqlSugar
         #region Select
         ISugarQueryable<TResult> Select<TResult>(Expression<Func<T, T2, TResult>> expression);
         ISugarQueryable<TResult> Select<TResult>(Expression<Func<T,T2, TResult>> expression, bool isAutoFill);
+        ISugarQueryable<TResult> SelectIF<TResult>(bool condition, Expression<Func<T, T2, TResult>> trueSelectExpression, Expression<Func<T,T2, TResult>> falseSelectExpression);
+
         #endregion
 
         #region OrderBy