Remove a bunch of unnecessary (and *theoretically* dangerous, in a very...

Remove a bunch of unnecessary (and *theoretically* dangerous, in a very unlikely scenario involving custom cultures installed on a box) C# 7 string $"...{...}..." usages

Dapper/DefaultTypeMap.cs

@@ -165,7 +165,7 @@ public SqlMapper.IMemberMap GetMember(string columnName)
                 return new SimpleMemberMap(columnName, property);
 
             // roslyn automatically implemented properties, in particular for get-only properties: <{Name}>k__BackingField;
-            var backingFieldName = $"<{columnName}>k__BackingField";
+            var backingFieldName = "<" + columnName + ">k__BackingField";
 
             // preference order is:
             // exact match over underscre match, exact case over wrong case, backing fields over regular fields, match-inc-underscores over match-exc-underscores
@@ -177,7 +177,7 @@ public SqlMapper.IMemberMap GetMember(string columnName)
             if (field == null && MatchNamesWithUnderscores)
             {
                 var effectiveColumnName = columnName.Replace("_", "");
-                backingFieldName = $"<{effectiveColumnName}>k__BackingField";
+                backingFieldName = "<" +effectiveColumnName + ">k__BackingField";
 
                 field = _fields.FirstOrDefault(p => string.Equals(p.Name, effectiveColumnName, StringComparison.Ordinal))
                     ?? _fields.FirstOrDefault(p => string.Equals(p.Name, backingFieldName, StringComparison.Ordinal))

Dapper/DynamicParameters.cs

@@ -403,7 +403,7 @@ public DynamicParameters Output<T>(T target, Expression<Func<T, object>> express
             if (setter != null) goto MAKECALLBACK;
 
             // Come on let's build a method, let's build it, let's build it now!
-            var dm = new DynamicMethod($"ExpressionParam{Guid.NewGuid()}", null, new[] { typeof(object), GetType() }, true);
+            var dm = new DynamicMethod("ExpressionParam" + Guid.NewGuid().ToString(), null, new[] { typeof(object), GetType() }, true);
             var il = dm.GetILGenerator();
 
             il.Emit(OpCodes.Ldarg_0); // [object]

Dapper/SqlMapper.cs

@@ -2024,12 +2024,12 @@ private static bool TryStringSplit(ref IEnumerable list, int splitAt, string nam
                 else
                 {
                     varName = variableName;
-                    return $"(select val from {variableName}_TSS)";
+                    return "(select val from " + variableName + "_TSS)";
                 }
             }, RegexOptions.IgnoreCase | RegexOptions.Multiline | RegexOptions.CultureInvariant);
             if (varName == null) return false; // couldn't resolve the var!
 
-            command.CommandText = $"declare {varName}_TSS table(val {colType});insert {varName}_TSS (val) select value from string_split({varName},',');" + sql;
+            command.CommandText = "declare " + varName + "_TSS table(val " + colType + ");insert " + varName + "_TSS (val) select value from string_split(" + varName + ",',');" + sql;
             var concatenatedParam = command.CreateParameter();
             concatenatedParam.ParameterName = namePrefix;
             concatenatedParam.DbType = DbType.AnsiString;
@@ -2237,7 +2237,7 @@ internal static IList<LiteralToken> GetLiteralTokens(string sql)
             {
                 filterParams = !smellsLikeOleDb.IsMatch(identity.sql);
             }
-            var dm = new DynamicMethod($"ParamInfo{Guid.NewGuid()}", null, new[] { typeof(IDbCommand), typeof(object) }, type, true);
+            var dm = new DynamicMethod("ParamInfo" + Guid.NewGuid().ToString(), null, new[] { typeof(IDbCommand), typeof(object) }, type, true);
 
             var il = dm.GetILGenerator();
 
@@ -2897,7 +2897,7 @@ static LocalBuilder GetTempLocal(ILGenerator il, ref Dictionary<Type, LocalBuild
         )
         {
             var returnType = type.IsValueType() ? typeof(object) : type;
-            var dm = new DynamicMethod($"Deserialize{Guid.NewGuid()}", returnType, new[] { typeof(IDataReader) }, type, true);
+            var dm = new DynamicMethod("Deserialize" + Guid.NewGuid().ToString(), returnType, new[] { typeof(IDataReader) }, type, true);
             var il = dm.GetILGenerator();
             il.DeclareLocal(typeof(int));
             il.DeclareLocal(type);
@@ -2971,7 +2971,7 @@ static LocalBuilder GetTempLocal(ILGenerator il, ref Dictionary<Type, LocalBuild
                     var ctor = typeMap.FindConstructor(names, types);
                     if (ctor == null)
                     {
-                        string proposedTypes = $"({string.Join(", ", types.Select((t, i) => t.FullName + " " + names[i]).ToArray())})";
+                        string proposedTypes = "(" + string.Join(", ", types.Select((t, i) => t.FullName + " " + names[i]).ToArray()) + ")";
                         throw new InvalidOperationException($"A parameterless default constructor or one matching signature {proposedTypes} is required for {type.FullName} materialization");
                     }