add tostring() methods and fix some typo

src/IO.Milvus/ApiSchema/ShowCollectionsRequest.cs

@@ -5,22 +5,6 @@
 
 namespace IO.Milvus.ApiSchema;
 
-/// <summary>
-/// Show type
-/// </summary>
-public enum ShowType
-{
-    /// <summary>
-    /// Will return all collections
-    /// </summary>
-    All = 0,
-
-    /// <summary>
-    /// Will return loaded collections with their inMemory_percentages
-    /// </summary>
-    InMemory = 1,
-}
-
 /// <summary>
 /// ShowCollections
 /// </summary>

src/IO.Milvus/Client/IMilvusClient.cs

@@ -355,7 +355,7 @@ Task<MilvusMutationResult> InsertAsync(
     /// Delete rows of data entities from a collection by given expression.
     /// </summary>
     /// <param name="collectionName">Collection name.</param>
-    /// <param name="expr">Expression.</param>
+    /// <param name="expr">A predicate expression outputs a boolean value. <see href="https://milvus.io/docs/boolean.md"/></param>
     /// <param name="partitionName">Partition name.</param>
     /// <param name="cancellationToken">Cancellation token.</param>
     /// <returns></returns>
@@ -384,12 +384,16 @@ Task<MilvusSearchResult> SearchAsync(
     /// <param name="leftVectors">Vectors on the left side of the operator</param>
     /// <param name="rightVectors">Vectors on the right side of the operator</param>
     /// <param name="milvusMetricType"><see cref="MilvusMetricType"/>
-    /// For floating-point vectors:
+    /// <para>
+    /// <term>For floating-point vectors:</term> 
+    /// </para>
     /// <list type="bullet">
     /// <item>L2 (Euclidean distance)</item>
     /// <item>IP (Inner product)</item>
     /// </list>
-    /// For binary vectors:
+    /// <para>
+    /// <term>For binary vectors:</term> 
+    /// </para>
     /// <list type="bullet">
     /// <item>JACCARD (Jaccard distance)</item>
     /// <item>TANIMOTO (Tanimoto distance)</item>
@@ -406,7 +410,7 @@ Task<MilvusCalDistanceResult> CalDistanceAsync(
         CancellationToken cancellationToken = default);
 
     /// <summary>
-    /// Flush a collection's data to disk. Milvus's data will be auto flushed.
+    /// Flush a collection's data to disk. Milvus data will be auto flushed.
     /// Flush is only required when you want to get up to date entities numbers in statistics due to some internal mechanism.
     /// It will be removed in the future.
     /// </summary>

src/IO.Milvus/Client/REST/MilvusRestClient.Partition.cs

@@ -113,7 +113,7 @@ public async Task LoadPartitionsAsync(
         int replicaNumber = 1,
         CancellationToken cancellationToken = default)
     {
-        this._log.LogDebug("Create partition {0}", collectionName);
+        this._log.LogDebug("Load partition {0}", collectionName);
 
         using HttpRequestMessage request = LoadPartitionsRequest
             .Create(collectionName)
@@ -129,7 +129,7 @@ public async Task LoadPartitionsAsync(
         }
         catch (HttpRequestException e)
         {
-            this._log.LogError(e, "Create partition failed: {0}, {1}", e.Message, responseContent);
+            this._log.LogError(e, "Load partition failed: {0}, {1}", e.Message, responseContent);
             throw;
         }
 

src/IO.Milvus/CollectionSchema.cs

@@ -37,4 +37,13 @@ public sealed class CollectionSchema
     /// </summary>
     [JsonPropertyName("name")]
     public string Name { get; set; }
-}
+
+    /// <summary>
+    /// Return string value of <see cref="CollectionSchema"/>
+    /// </summary>
+    /// <returns></returns>
+    public override string ToString()
+    {
+        return $"CollectionSchema: {{{nameof(AutoId)}: {AutoId}, {nameof(Description)}, {Description}, {nameof(Fields)}: {Fields?.Count}}}";
+    }
+}

src/IO.Milvus/Field.cs

@@ -5,6 +5,7 @@
 using System.Linq;
 using System.Text.Json.Serialization;
 using IO.Milvus.Diagnostics;
+using System.Collections.Specialized;
 
 namespace IO.Milvus;
 
@@ -500,6 +501,15 @@ public override Grpc.FieldData ToGrpcFieldData()
         return fieldData;
     }
 
+    /// <summary>
+    /// Return string value of <see cref="Field{TData}"/>
+    /// </summary>
+    /// <returns></returns>
+    public override string ToString()
+    {
+        return $"Field: {{{nameof(FieldName)}: {FieldName}, {nameof(DataType)}: {DataType}, {nameof(Data)}: {Data?.Count}, {nameof(RowCount)}: {RowCount}}}";
+    }
+
     internal void Check()
     {
         Verify.ArgNotNullOrEmpty(FieldName, $"FieldName cannot be null or empty");

src/IO.Milvus/FieldType.cs

@@ -1,5 +1,4 @@
-using IO.Milvus.Grpc;
-using System;
+using System;
 using System.Collections.Generic;
 using System.Text.Json.Serialization;
 

src/IO.Milvus/FloatVectorField.cs

@@ -1,5 +1,4 @@
-using IO.Milvus.Grpc;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Linq;
 
 namespace IO.Milvus;
@@ -31,7 +30,7 @@ public FloatVectorField(
     /// </summary>
     /// <returns>Field data</returns>
     /// <exception cref="Diagnostics.MilvusException"></exception>
-    public override FieldData ToGrpcFieldData()
+    public override Grpc.FieldData ToGrpcFieldData()
     {
         var floatArray = new Grpc.FloatArray();
 

src/IO.Milvus/MilvusClientExtensions.cs

@@ -13,7 +13,7 @@ namespace IO.Milvus;
 public static class MilvusClientExtensions
 {
     /// <summary>
-    /// Use showCollection() to check loading percentages of the collection.
+    /// Use <see cref="IMilvusClient.ShowCollectionsAsync(IList{string}, ShowType, CancellationToken)"/> to check loading percentages of the collection.
     /// </summary>
     /// <remarks>
     /// If the inMemory percentage is 100, that means the collection has finished loading.

src/IO.Milvus/MilvusCollection.cs

@@ -38,4 +38,12 @@ internal MilvusCollection(
     /// Load percentage on query node when type is InMemory.
     /// </summary>
     public long InMemoryPercentage { get; }
+
+    /// <summary>
+    /// Return string value of <see cref="MilvusCollection"/>.
+    /// </summary>
+    public override string ToString()
+    {
+        return $"MilvusCollection: {{{nameof(CollectionName)}: {CollectionName}, {nameof(CollectionId)}: {CollectionId}, {nameof(CreatedUtcTime)}:{CreatedUtcTime}, {nameof(InMemoryPercentage)}: {InMemoryPercentage}}}";
+    }
 }

src/IO.Milvus/MilvusDslType.cs

@@ -11,7 +11,10 @@ public enum MilvusDslType
     Dsl = 0,
 
     /// <summary>
-    /// 
+    /// A predicate expression outputs a boolean value.
     /// </summary>
+    /// <remarks>
+    /// <see href="https://milvus.io/docs/boolean.md"/>
+    /// </remarks>
     BoolExprV1 = 1,
 }

src/IO.Milvus/MilvusIndex.cs

@@ -45,4 +45,13 @@ public MilvusIndex(
     /// Contains index_type, metric_type, params.
     /// </summary>
     public IDictionary<string, string> Params { get; }
+
+    /// <summary>
+    /// Get string data of <see cref="MilvusIndex"/>
+    /// </summary>
+    /// <returns></returns>
+    public override string ToString()
+    {
+        return $"MilvusIndex: {{{nameof(FieldName)}: {FieldName}, {nameof(IndexName)}: {IndexName}, {nameof(IndexId)}: {IndexId}}}";
+    }
 }

src/IO.Milvus/MilvusPartition.cs

@@ -26,17 +26,17 @@ public MilvusPartition(
     {
         PartitionId = partitionId;
         PartitionName = partitionName;
-        CreatedUtcTimestamp = createdUtcTimestamp;
+        CreatedUtcTime = createdUtcTimestamp;
         InMemoryPercentage = inMemoryPercentage;
     }
 
     /// <summary>
-    /// Partition id
+    /// Partition id.
     /// </summary>
     public long PartitionId { get; }
 
     /// <summary>
-    /// Partition name
+    /// Partition name.
     /// </summary>
     public string PartitionName { get; }
 
@@ -46,10 +46,18 @@ public MilvusPartition(
     public long InMemoryPercentage { get; }
 
     /// <summary>
-    /// Create utc time
+    /// Create utc time.
     /// </summary>
     /// <remarks>
-    /// If you want to get a local time, you can use <see cref="DateTime.ToLocalTime"/>
+    /// If you want to get a local time, you can use <see cref="DateTime.ToLocalTime"/>.
     /// </remarks>
-    public DateTime CreatedUtcTimestamp { get; }
+    public DateTime CreatedUtcTime { get; }
+
+    /// <summary>
+    /// Return string value of <see cref="MilvusPartition"/>.
+    /// </summary>
+    public override string ToString()
+    {
+        return $"MilvusPartition: {{{nameof(PartitionName)}: {PartitionName}, {nameof(PartitionId)}: {PartitionId}, {nameof(CreatedUtcTime)}:{CreatedUtcTime}, {nameof(InMemoryPercentage)}: {InMemoryPercentage}}}";
+    }
 }

src/IO.Milvus/MilvusPersistentSegmentInfo.cs

@@ -38,6 +38,14 @@ public MilvusPersistentSegmentInfo(){}
     /// </summary>
     public MilvusSegmentState State { get; }
 
+    /// <summary>
+    /// Returns a string that represents the current object.
+    /// </summary>
+    public override string ToString()
+    {
+        return $"MilvusPersistentSegmentInfo {{{nameof(State)}: {State}, {nameof(SegmentId)}: {SegmentId}, {nameof(CollectionId)}: {CollectionId}, {nameof(PartitionId)}: {PartitionId}, {nameof(NumRows)}: {NumRows}}}";
+    }
+
     internal static IEnumerable<MilvusPersistentSegmentInfo> From(
         IEnumerable<PersistentSegmentInfo> infos)
     {

src/IO.Milvus/MilvusSearchResult.cs

@@ -1,8 +1,6 @@
 using IO.Milvus.ApiSchema;
 using IO.Milvus.Grpc;
-using System.Collections.Generic;
 using System.Linq;
-using System.Text.Json.Serialization;
 
 namespace IO.Milvus;
 
@@ -51,47 +49,4 @@ private MilvusSearchResult(string collectionName, MilvusSearchResultData results
         this.CollectionName = collectionName;
         this.Results = results;
     }
-}
-
-/// <summary>
-/// Milvus search result data
-/// </summary>
-public class MilvusSearchResultData
-{
-    /// <summary>
-    /// Fields data
-    /// </summary>
-    [JsonPropertyName("fields_data")]
-    [JsonConverter(typeof(MilvusFieldConverter))]
-    public IList<Field> FieldsData { get; set; }
-
-    /// <summary>
-    /// Ids
-    /// </summary>
-    [JsonPropertyName("ids")]
-    public MilvusIds Ids { get; set; }
-
-    /// <summary>
-    /// Number of queries
-    /// </summary>
-    [JsonPropertyName("num_queries")]
-    public long NumQueries { get; set; }
-
-    /// <summary>
-    /// Scores
-    /// </summary>
-    [JsonPropertyName("scores")]
-    public IList<float> Scores { get; set; }
-
-    /// <summary>
-    /// TopK
-    /// </summary>
-    [JsonPropertyName("top_k")]
-    public long TopK { get; set; }
-
-    /// <summary>
-    /// TopKs
-    /// </summary>
-    [JsonPropertyName("topks")]
-    public IList<long> TopKs { get; set; }
 }

src/IO.Milvus/MilvusSearchResultData.cs

@@ -0,0 +1,47 @@
+using System.Collections.Generic;
+using System.Text.Json.Serialization;
+
+namespace IO.Milvus;
+
+/// <summary>
+/// Milvus search result data
+/// </summary>
+public class MilvusSearchResultData
+{
+    /// <summary>
+    /// Fields data
+    /// </summary>
+    [JsonPropertyName("fields_data")]
+    [JsonConverter(typeof(MilvusFieldConverter))]
+    public IList<Field> FieldsData { get; set; }
+
+    /// <summary>
+    /// Ids
+    /// </summary>
+    [JsonPropertyName("ids")]
+    public MilvusIds Ids { get; set; }
+
+    /// <summary>
+    /// Number of queries
+    /// </summary>
+    [JsonPropertyName("num_queries")]
+    public long NumQueries { get; set; }
+
+    /// <summary>
+    /// Scores
+    /// </summary>
+    [JsonPropertyName("scores")]
+    public IList<float> Scores { get; set; }
+
+    /// <summary>
+    /// TopK
+    /// </summary>
+    [JsonPropertyName("top_k")]
+    public long TopK { get; set; }
+
+    /// <summary>
+    /// TopKs
+    /// </summary>
+    [JsonPropertyName("topks")]
+    public IList<long> TopKs { get; set; }
+}

src/IO.Milvus/ShowType.cs

@@ -0,0 +1,17 @@
+namespace IO.Milvus;
+
+/// <summary>
+/// Show type
+/// </summary>
+public enum ShowType
+{
+    /// <summary>
+    /// Will return all collections
+    /// </summary>
+    All = 0,
+
+    /// <summary>
+    /// Will return loaded collections with their inMemory_percentages
+    /// </summary>
+    InMemory = 1,
+}

src/IO.MilvusTests/Client/MilvusClientTests.cs

@@ -3,12 +3,6 @@
 using IO.Milvus.Client;
 using IO.Milvus.Diagnostics;
 using IO.MilvusTests.Utils;
-using System;
-using System.Collections.Concurrent;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using Xunit;
 
 namespace IO.MilvusTests.Client;
@@ -17,7 +11,7 @@ public partial class MilvusClientTests
 {
     [Theory]
     [ClassData(typeof(TestClients))]
-    public async Task WithMilvusTest(IMilvusClient milvusClient)
+    public async Task SampleTest(IMilvusClient milvusClient)
     {
         string collectionName = milvusClient.GetType().Name;