diff --git a/.vs/SqlSugar/v14/.suo b/.vs/SqlSugar/v14/.suo
index 79c08f819..3c2f0f99c 100644
Binary files a/.vs/SqlSugar/v14/.suo and b/.vs/SqlSugar/v14/.suo differ
diff --git a/OrmTest/Program.cs b/OrmTest/Program.cs
index 66fbcfebd..8d077e4a2 100644
--- a/OrmTest/Program.cs
+++ b/OrmTest/Program.cs
@@ -16,10 +16,11 @@ namespace OrmTest
     {
         static void Main(string[] args)
         {
-            Expression<Func<Student, bool>> exp = it => it.Name!="a";
+            string id = "1";
+            Expression<Func<Student, bool>> exp = it => it.Name!=id;
             ExpressionContext expContext = new ExpressionContext(exp, ResolveExpressType.Single);
            // var x = expContext.GetFiledName();
-            var xx = expContext.ToString();
+            var xx = expContext.ToSqlString();
 
 
             var b = DateTime.Now;
diff --git a/OrmTest/bin/Debug/OrmTest.exe b/OrmTest/bin/Debug/OrmTest.exe
index eecd622d5..cf072f763 100644
Binary files a/OrmTest/bin/Debug/OrmTest.exe and b/OrmTest/bin/Debug/OrmTest.exe differ
diff --git a/OrmTest/bin/Debug/OrmTest.pdb b/OrmTest/bin/Debug/OrmTest.pdb
index 08e3ca7f3..94672ade8 100644
Binary files a/OrmTest/bin/Debug/OrmTest.pdb and b/OrmTest/bin/Debug/OrmTest.pdb differ
diff --git a/OrmTest/bin/Debug/SqlSugar.dll b/OrmTest/bin/Debug/SqlSugar.dll
index e792a371e..35a390a73 100644
Binary files a/OrmTest/bin/Debug/SqlSugar.dll and b/OrmTest/bin/Debug/SqlSugar.dll differ
diff --git a/OrmTest/bin/Debug/SqlSugar.pdb b/OrmTest/bin/Debug/SqlSugar.pdb
index 0ed66cf06..ded381246 100644
Binary files a/OrmTest/bin/Debug/SqlSugar.pdb and b/OrmTest/bin/Debug/SqlSugar.pdb differ
diff --git a/OrmTest/obj/Debug/OrmTest.csprojResolveAssemblyReference.cache b/OrmTest/obj/Debug/OrmTest.csprojResolveAssemblyReference.cache
index 1c365fc61..652efce71 100644
Binary files a/OrmTest/obj/Debug/OrmTest.csprojResolveAssemblyReference.cache and b/OrmTest/obj/Debug/OrmTest.csprojResolveAssemblyReference.cache differ
diff --git a/OrmTest/obj/Debug/OrmTest.exe b/OrmTest/obj/Debug/OrmTest.exe
index eecd622d5..cf072f763 100644
Binary files a/OrmTest/obj/Debug/OrmTest.exe and b/OrmTest/obj/Debug/OrmTest.exe differ
diff --git a/OrmTest/obj/Debug/OrmTest.pdb b/OrmTest/obj/Debug/OrmTest.pdb
index 08e3ca7f3..94672ade8 100644
Binary files a/OrmTest/obj/Debug/OrmTest.pdb and b/OrmTest/obj/Debug/OrmTest.pdb differ
diff --git a/SqlSugar/ExpressionsToSql/ExpressionContext.cs b/SqlSugar/ExpressionsToSql/ExpressionContext.cs
index 4e0763cc6..5d34cf765 100644
--- a/SqlSugar/ExpressionsToSql/ExpressionContext.cs
+++ b/SqlSugar/ExpressionsToSql/ExpressionContext.cs
@@ -11,6 +11,7 @@ namespace SqlSugar
     {
         public ResolveExpressType Type { get; set; }
         public Expression Expression { get; set; }
+        public StringBuilder SqlWhere { get; set; }
         public virtual string SqlParameterKeyWord
         {
             get
@@ -30,12 +31,12 @@ namespace SqlSugar
             this.Expression = expression;
         }
 
-        public override string ToString()
+        public string ToSqlString()
         {
             BaseResolve resolve = new BaseResolve(new ExpressionParameter() { Expression = this.Expression, Context = this });
             resolve.Start();
-            if (resolve.SqlWhere == null) return string.Empty;
-            return resolve.SqlWhere.ToString();
+            if (this.SqlWhere == null) return string.Empty;
+            return this.SqlWhere.ToString();
         }
 
         public List<SugarParameter> Parameters
diff --git a/SqlSugar/ExpressionsToSql/ResolveItems/BaseResolve.cs b/SqlSugar/ExpressionsToSql/ResolveItems/BaseResolve.cs
index 98e75000b..4c6549b17 100644
--- a/SqlSugar/ExpressionsToSql/ResolveItems/BaseResolve.cs
+++ b/SqlSugar/ExpressionsToSql/ResolveItems/BaseResolve.cs
@@ -10,7 +10,6 @@ namespace SqlSugar
         protected Expression Expression { get; set; }
         protected Expression BaseExpression { get; set; }
         public ExpressionContext Context { get; set; }
-        public StringBuilder SqlWhere { get; set; }
         public bool? IsLeft { get; set; }
         public int ContentIndex { get { return this.Context.Index; } }
         public int Index { get; set; }
diff --git a/SqlSugar/ExpressionsToSql/ResolveItems/BinaryExpressionResolve.cs b/SqlSugar/ExpressionsToSql/ResolveItems/BinaryExpressionResolve.cs
index 6018e4013..cba5c58d3 100644
--- a/SqlSugar/ExpressionsToSql/ResolveItems/BinaryExpressionResolve.cs
+++ b/SqlSugar/ExpressionsToSql/ResolveItems/BinaryExpressionResolve.cs
@@ -28,21 +28,21 @@ namespace SqlSugar
             string leftString = GetLeftString(parameter);
             string rightString = GetRightString(parameter);
             string binarySql =string.Format(ExpressionConst.BinaryFormatString,leftString,operatorValue,rightString);
-            string sqlWhereString = base.SqlWhere.ObjToString();
-            if (base.SqlWhere == null) {
-                base.SqlWhere = new StringBuilder();
+            string sqlWhereString = base.Context.SqlWhere.ObjToString();
+            if (base.Context.SqlWhere == null) {
+                base.Context.SqlWhere = new StringBuilder();
             }
             if (sqlWhereString.Contains(ExpressionConst.Format0))
             {
-                base.SqlWhere.Replace(ExpressionConst.Format0, sqlWhereString);
+                base.Context.SqlWhere.Replace(ExpressionConst.Format0, binarySql);
             }
             else
             {
-                base.SqlWhere.Append(binarySql);
+                base.Context.SqlWhere.Append(binarySql);
             }
             if (sqlWhereString.Contains(ExpressionConst.Format1))
             {
-                base.SqlWhere.Replace(ExpressionConst.Format1, ExpressionConst.Format0);
+                base.Context.SqlWhere.Replace(ExpressionConst.Format1, ExpressionConst.Format0);
             }
         }
 
diff --git a/SqlSugar/ExpressionsToSql/ResolveItems/ConstantExpressionResolve.cs b/SqlSugar/ExpressionsToSql/ResolveItems/ConstantExpressionResolve.cs
index 11d68a679..306cf6701 100644
--- a/SqlSugar/ExpressionsToSql/ResolveItems/ConstantExpressionResolve.cs
+++ b/SqlSugar/ExpressionsToSql/ResolveItems/ConstantExpressionResolve.cs
@@ -23,10 +23,10 @@ namespace SqlSugar
                     ExpressionType = expression.GetType()
                 }));
             }
-            if (isLeft == null && base.SqlWhere == null)
+            if (isLeft == null && base.Context.SqlWhere == null)
             {
-                base.SqlWhere = new StringBuilder();
-                base.SqlWhere.Append(value);
+                base.Context.SqlWhere = new StringBuilder();
+                base.Context.SqlWhere.Append(value);
             }
         }
 
diff --git a/SqlSugar/ExpressionsToSql/ResolveItems/LambdaExpressionResolve.cs b/SqlSugar/ExpressionsToSql/ResolveItems/LambdaExpressionResolve.cs
index b0e4436e2..0e6a7d4c3 100644
--- a/SqlSugar/ExpressionsToSql/ResolveItems/LambdaExpressionResolve.cs
+++ b/SqlSugar/ExpressionsToSql/ResolveItems/LambdaExpressionResolve.cs
@@ -14,7 +14,7 @@ namespace SqlSugar
             if (expression.NodeType == ExpressionType.MemberAccess)
             {
                 string appendString = "(" +((MemberExpression)expression).Member.Name + "=1)";
-                base.SqlWhere.Append(appendString);
+                base.Context.SqlWhere.Append(appendString);
             }
             else
             {
diff --git a/SqlSugar/ExpressionsToSql/ResolveItems/MemberExpressionResolve.cs b/SqlSugar/ExpressionsToSql/ResolveItems/MemberExpressionResolve.cs
index f4e0c095d..70ea27a9a 100644
--- a/SqlSugar/ExpressionsToSql/ResolveItems/MemberExpressionResolve.cs
+++ b/SqlSugar/ExpressionsToSql/ResolveItems/MemberExpressionResolve.cs
@@ -21,10 +21,10 @@ namespace SqlSugar
                     Value = fieldName,
                     ExpressionType = expression.GetType()
                 }));
-            if (isLeft == null && base.SqlWhere == null)
+            if (isLeft == null && base.Context.SqlWhere == null)
             {
-                base.SqlWhere = new StringBuilder();
-                base.SqlWhere.Append(fieldName);
+                base.Context.SqlWhere = new StringBuilder();
+                base.Context.SqlWhere.Append(fieldName);
             }
         }
     }
diff --git a/SqlSugar/bin/Debug/SqlSugar.dll b/SqlSugar/bin/Debug/SqlSugar.dll
index e792a371e..35a390a73 100644
Binary files a/SqlSugar/bin/Debug/SqlSugar.dll and b/SqlSugar/bin/Debug/SqlSugar.dll differ
diff --git a/SqlSugar/bin/Debug/SqlSugar.pdb b/SqlSugar/bin/Debug/SqlSugar.pdb
index 0ed66cf06..ded381246 100644
Binary files a/SqlSugar/bin/Debug/SqlSugar.pdb and b/SqlSugar/bin/Debug/SqlSugar.pdb differ
diff --git a/SqlSugar/obj/Debug/SqlSugar.csproj.FileListAbsolute.txt b/SqlSugar/obj/Debug/SqlSugar.csproj.FileListAbsolute.txt
index 9a47395a4..c7414cb31 100644
--- a/SqlSugar/obj/Debug/SqlSugar.csproj.FileListAbsolute.txt
+++ b/SqlSugar/obj/Debug/SqlSugar.csproj.FileListAbsolute.txt
@@ -3,4 +3,3 @@ F:\MyOpenSource\SqlSugar4.XNew\SqlSugar\SqlSugar\bin\Debug\SqlSugar.pdb
 F:\MyOpenSource\SqlSugar4.XNew\SqlSugar\SqlSugar\bin\Debug\Newtonsoft.Json.dll
 F:\MyOpenSource\SqlSugar4.XNew\SqlSugar\SqlSugar\obj\Debug\SqlSugar.dll
 F:\MyOpenSource\SqlSugar4.XNew\SqlSugar\SqlSugar\obj\Debug\SqlSugar.pdb
-F:\MyOpenSource\SqlSugar4.XNew\SqlSugar\SqlSugar\obj\Debug\SqlSugar.csprojResolveAssemblyReference.cache
diff --git a/SqlSugar/obj/Debug/SqlSugar.csprojResolveAssemblyReference.cache b/SqlSugar/obj/Debug/SqlSugar.csprojResolveAssemblyReference.cache
deleted file mode 100644
index cf78a08b2..000000000
Binary files a/SqlSugar/obj/Debug/SqlSugar.csprojResolveAssemblyReference.cache and /dev/null differ
diff --git a/SqlSugar/obj/Debug/SqlSugar.dll b/SqlSugar/obj/Debug/SqlSugar.dll
index e792a371e..35a390a73 100644
Binary files a/SqlSugar/obj/Debug/SqlSugar.dll and b/SqlSugar/obj/Debug/SqlSugar.dll differ
diff --git a/SqlSugar/obj/Debug/SqlSugar.pdb b/SqlSugar/obj/Debug/SqlSugar.pdb
index 0ed66cf06..ded381246 100644
Binary files a/SqlSugar/obj/Debug/SqlSugar.pdb and b/SqlSugar/obj/Debug/SqlSugar.pdb differ