修正sqlite大小写问题。

IoTSharp.Data.Sqlite/IoTSharpDataBuilderExtensions.cs

@@ -5,6 +5,7 @@ using IoTSharp.Data.Sqlite;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.DependencyInjection;
 using System;
+using System.Linq;
 
 namespace Microsoft.Extensions.DependencyInjection
 {
@@ -32,5 +33,17 @@ namespace Microsoft.Extensions.DependencyInjection
             builder.AddDataSource(connectionString, ReadWriteType.Read | ReadWriteType.Write, DatabaseType.SQLite);
             builder.SetDateSharding<TelemetryData>(nameof(TelemetryData.DateTime), expandBy, DateTime.Now);
         }
+
+        public static void SetCaseInsensitiveSearchesForSQLite(this ModelBuilder modelBuilder)
+        {
+            modelBuilder.UseCollation("NOCASE");
+
+            foreach (var property in modelBuilder.Model.GetEntityTypes()
+                         .SelectMany(t => t.GetProperties())
+                         .Where(p => p.ClrType == typeof(string)))
+            {
+                property.SetCollation("NOCASE");
+            }
+        }
     }
 }

IoTSharp.Data.Sqlite/SqliteModelBuilderOptions.cs

 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Infrastructure;
 using System;
+using Microsoft.Extensions.DependencyInjection;
 
 namespace IoTSharp.Data.Sqlite
 {
@@ -14,7 +15,7 @@ namespace IoTSharp.Data.Sqlite
 
         public void OnModelCreating(ModelBuilder modelBuilder)
         {
-           
+            modelBuilder.SetCaseInsensitiveSearchesForSQLite();
         }
     }
 }
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