Use GetUtf8Bytes for remaining C# JSON deserialization paths

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/src/Providers/MrwSerializationTypeDefinition.cs

@@ -2458,13 +2458,13 @@ internal static ValueExpression DeserializeJsonValueCore(
                 Type t when t == typeof(BinaryData) =>
                     format is SerializationFormat.Bytes_Base64 or SerializationFormat.Bytes_Base64Url
                         ? BinaryDataSnippets.FromBytes(element.GetBytesFromBase64(format.ToFormatSpecifier()))
-                        : BinaryDataSnippets.FromString(element.GetRawText()),
+                        : element.GetUtf8Bytes(),
                 Type t when t == typeof(byte[]) =>
                     format is SerializationFormat.Bytes_Base64 or SerializationFormat.Bytes_Base64Url
                         ? element.GetBytesFromBase64(format.ToFormatSpecifier())
-                        : BinaryDataSnippets.FromString(element.GetRawText()).ToArray(),
+                        : element.GetUtf8Bytes().ToArray(),
                 Type t when t == typeof(Stream) =>
-                    BinaryDataSnippets.FromString(element.GetRawText()).ToStream(),
+                    element.GetUtf8Bytes().ToStream(),
                 Type t when t == typeof(FileBinaryContent) =>
                     New.Instance<FileBinaryContent>(New.Instance<MemoryStream>(element.GetBytesFromBase64(), Literal(false))),
                 Type t when t == typeof(JsonElement) =>

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/src/Providers/ScmMethodProviderCollection.cs

@@ -764,7 +764,7 @@ private MethodBodyStatement GetElementConversion(CSharpType elementType, ScopedA
                 return new IfElseStatement(
                     item.ValueKind().Equal(JsonValueKindSnippets.Null),
                     AddElement(dictKey, Null, value),
-                    AddElement(dictKey, BinaryDataSnippets.FromString(item.GetRawText()), value));
+                    AddElement(dictKey, item.GetUtf8Bytes(), value));
             }
             else
             {

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/MrwSerializationTypeDefinitionTests.cs

@@ -1568,8 +1568,10 @@ public void TestSerializationOfBinaryDataPropertyAvoidsCopy(bool useBase64Url, s
             Assert.AreEqual(Helpers.GetExpectedFromFile(format), methodBody);
         }
 
-        [Test]
-        public void TestDeserializationOfNonBase64ByteArrayPropertyUsesGetRawText()
+        [TestCase(typeof(BinaryData))]
+        [TestCase(typeof(byte[]))]
+        [TestCase(typeof(System.IO.Stream))]
+        public void TestDeserializationOfNonBase64PropertyUsesGetUtf8Bytes(Type propertyType)
         {
             var bytesNoEncoding = new InputPrimitiveType(InputPrimitiveTypeKind.Bytes, "bytes", "TypeSpec.bytes");
             var inputModel = InputFactory.Model("TestModel", properties:
@@ -1580,7 +1582,7 @@ public void TestDeserializationOfNonBase64ByteArrayPropertyUsesGetRawText()
                 createSerializationsCore: (inputType, typeProvider) =>
                     inputType is InputModelType modelType ? [new MrwSerializationTypeDefinition(modelType, (typeProvider as ModelProvider)!)] : [],
                 createCSharpTypeCore: (inputType) => inputType is InputPrimitiveType { Kind: InputPrimitiveTypeKind.Bytes }
-                    ? new CSharpType(typeof(byte[]))
+                    ? new CSharpType(propertyType)
                     : null!,
                 createCSharpTypeCoreFallback: (inputType) => inputType is InputPrimitiveType { Kind: InputPrimitiveTypeKind.Bytes });
 
@@ -1591,10 +1593,20 @@ public void TestDeserializationOfNonBase64ByteArrayPropertyUsesGetRawText()
             var deserializationMethod = serialization!.BuildDeserializationMethod();
             var methodBody = deserializationMethod!.BodyStatements!.ToDisplayString();
 
-            Assert.IsTrue(methodBody.Contains("GetRawText"),
-                $"byte[] property with no encoding should use GetRawText() fallback. Actual:\n{methodBody}");
-            Assert.IsTrue(methodBody.Contains("ToArray"),
-                $"byte[] property with no encoding should call ToArray(). Actual:\n{methodBody}");
+            Assert.IsTrue(methodBody.Contains("GetUtf8Bytes"),
+                $"Property with no encoding should use GetUtf8Bytes(). Actual:\n{methodBody}");
+            Assert.IsFalse(methodBody.Contains("GetRawText"),
+                $"Property with no encoding should not transcode raw JSON. Actual:\n{methodBody}");
+            if (propertyType == typeof(byte[]))
+            {
+                Assert.IsTrue(methodBody.Contains("ToArray"),
+                    $"byte[] property with no encoding should call ToArray(). Actual:\n{methodBody}");
+            }
+            else if (propertyType == typeof(System.IO.Stream))
+            {
+                Assert.IsTrue(methodBody.Contains("ToStream"),
+                    $"Stream property with no encoding should call ToStream(). Actual:\n{methodBody}");
+            }
             Assert.IsFalse(methodBody.Contains("EnumerateArray"),
                 $"byte[] property should not use array enumeration. Actual:\n{methodBody}");
         }

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/DeserializationTests/DeserializeStruct.cs

@@ -29,7 +29,7 @@ namespace Sample.Models
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.TestModel(stringProperty, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/DeserializationTests/OptionalFileBinaryContentProperty.cs

@@ -36,7 +36,7 @@ public partial class TestModel : global::System.ClientModel.Primitives.IJsonMode
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.TestModel(profileImage, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/DeserializationTests/RequiredFileBinaryContentProperty.cs

@@ -32,7 +32,7 @@ public partial class TestModel : global::System.ClientModel.Primitives.IJsonMode
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.TestModel(profileImage, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/DeserializationTests/TestDeserializationOfDurationMillisecondsIntegerWireType(Int32).cs

@@ -29,7 +29,7 @@ public partial class TestModel : global::System.ClientModel.Primitives.IJsonMode
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.TestModel(audioEndMs, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/DeserializationTests/TestDeserializationOfDurationMillisecondsIntegerWireType(Int64).cs

@@ -29,7 +29,7 @@ public partial class TestModel : global::System.ClientModel.Primitives.IJsonMode
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.TestModel(audioEndMs, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/DeserializationTests/TestDeserializationOfDurationMillisecondsIntegerWireType(Integer).cs

@@ -29,7 +29,7 @@ public partial class TestModel : global::System.ClientModel.Primitives.IJsonMode
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.TestModel(audioEndMs, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/DiscriminatorTests/TestUnknownNestedDiscriminatorCastsToInterfaceType.cs

@@ -108,7 +108,7 @@ protected override void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrit
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.UnknownTree(plantType, name, additionalBinaryDataProperties, treeType);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/DynamicModelSerializationTests/DeserializeModelPropertyType.cs

@@ -36,7 +36,7 @@ public partial class DynamicModel
                 }
                 if (prop.NameEquals("anything"u8))
                 {
-                    anything = global::System.BinaryData.FromString(prop.Value.GetRawText());
+                    anything = prop.Value.GetUtf8Bytes();
                     continue;
                 }
                 patch.Set([.. "$."u8, .. global::System.Text.Encoding.UTF8.GetBytes(prop.Name)], prop.Value.GetUtf8Bytes());

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/DynamicModelSerializationTests/DeserializeModelWithBinaryDataAdditionalPropsBackCompat.cs

@@ -30,7 +30,7 @@ public partial class DynamicModel
                     p1 = prop.Value.GetString();
                     continue;
                 }
-                additionalProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                additionalProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
             }
             return new global::Sample.Models.DynamicModel(p1, additionalProperties, patch);
         }

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/ModelCustomizationTests/CanCustomizeBaseType.cs

@@ -92,7 +92,7 @@ protected override void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrit
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.MockInputModel(prop1, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/ModelCustomizationTests/CanCustomizeEnumToFieldFrameworkType.cs

@@ -115,7 +115,7 @@ protected virtual void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrite
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.MockInputModel(prop1, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/ModelCustomizationTests/CanCustomizeEnumToFrameworkType.cs

@@ -115,7 +115,7 @@ protected virtual void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrite
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.MockInputModel(prop1, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/ModelCustomizationTests/CanCustomizeFixedEnumString.cs

@@ -112,7 +112,7 @@ protected virtual void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrite
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.MockInputModel(prop1, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/ModelCustomizationTests/CanCustomizeGuidProperty.cs

@@ -112,7 +112,7 @@ protected virtual void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrite
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.MockInputModel(prop1, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/ModelCustomizationTests/CanCustomizeNullableStringToFixedEnum.cs

@@ -112,7 +112,7 @@ protected virtual void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrite
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.MockInputModel(prop1, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/ModelCustomizationTests/CanCustomizePropertyIntoReadOnlyMemory.cs

@@ -124,7 +124,7 @@ protected virtual void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrite
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.MockInputModel(prop1, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/ModelCustomizationTests/CanCustomizeStringToFixedEnum.cs

@@ -112,7 +112,7 @@ protected virtual void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrite
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.MockInputModel(prop1, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/ModelCustomizationTests/CanCustomizeUriProperty.cs

@@ -115,7 +115,7 @@ protected virtual void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrite
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.MockInputModel(prop1, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/ModelCustomizationTests/DoesNotOverrideMethodsIfBaseTypeIsNotModel.cs

@@ -78,7 +78,7 @@ protected virtual void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrite
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.MockInputModel(prop1, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/MrwSerializationTypeDefinitionTests/GetUtf8BytesIsUsedForMrwFallback.cs

@@ -17,7 +17,7 @@
     }
     if ((options.Format != "W"))
     {
-        additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+        additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
     }
 }
 return new global::Sample.Models.MockInputModel(mockProperty, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/MrwSerializationTypeDefinitionTests/IsExactNameModelSerializationUsesExactName.cs

@@ -13,7 +13,7 @@
     }
     if ((options.Format != "W"))
     {
-        additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+        additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
     }
 }
 return new global::Sample.Models.snake_case_model(name, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/MrwSerializationTypeDefinitionTests/IsExactNamePropertySerializationUsesExactName(deserialize).cs

@@ -13,7 +13,7 @@
     }
     if ((options.Format != "W"))
     {
-        additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+        additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
     }
 }
 return new global::Sample.Models.MockInputModel(accessToken, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/SerializationCustomizationTests/CanChangeDictionaryToBinaryData.cs

@@ -117,12 +117,12 @@ protected virtual void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrite
                     {
                         continue;
                     }
-                    prop1 = global::System.BinaryData.FromString(prop.Value.GetRawText());
+                    prop1 = prop.Value.GetUtf8Bytes();
                     continue;
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.MockInputModel(prop1, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/SerializationCustomizationTests/CanChangeListOfEnumPropToListOfExtensibleEnum.cs

@@ -125,7 +125,7 @@ protected virtual void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrite
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.Model((prop1 ?? new global::Sample.ChangeTrackingList<global::Sample.Models.MyEnum>()), additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/SerializationCustomizationTests/CanChangePropertyName.cs

@@ -137,7 +137,7 @@ protected virtual void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrite
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.Model(prop2, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/SerializationCustomizationTests/CanChangePropertyNameAndRedefineOriginal.cs

@@ -137,7 +137,7 @@ protected virtual void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrite
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.MockInputModel(prop2, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/SerializationCustomizationTests/CanChangePropertySerializedName.cs

@@ -133,7 +133,7 @@ protected virtual void JsonModelWriteCore(global::System.Text.Json.Utf8JsonWrite
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.MockInputModel(name, customColor, flavor, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/SerializationCustomizationTests/CanCustomizeDeserializationMethodWithOptions.cs

@@ -35,7 +35,7 @@ public partial class MockInputModel
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.MockInputModel(prop1, prop2, additionalBinaryDataProperties);

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/test/Providers/MrwSerializationTypeDefinitions/TestData/SerializationCustomizationTests/CanCustomizeDeserializationMethodWithoutOptions.cs

@@ -35,7 +35,7 @@ public partial class MockInputModel
                 }
                 if ((options.Format != "W"))
                 {
-                    additionalBinaryDataProperties.Add(prop.Name, global::System.BinaryData.FromString(prop.Value.GetRawText()));
+                    additionalBinaryDataProperties.Add(prop.Name, prop.Value.GetUtf8Bytes());
                 }
             }
             return new global::Sample.Models.MockInputModel(prop1, prop2, additionalBinaryDataProperties);