Fix error when create database and query

.gitignore

@@ -328,3 +328,4 @@ ASALocalRun/
 
 # MFractors (Xamarin productivity tool) working folder 
 .mfractor/
+.vscode

src/CouchDB.Driver/CouchClient.cs

@@ -66,7 +66,7 @@ public CouchClient(string connectionString, Action<CouchSettings> couchSettingsF
         #region CRUD
 
         /// <summary>
-        /// Returns an instance of the CouchDB database with the given name. 
+        /// Returns an instance of the CouchDB database with the given name.
         /// If EnsureDatabaseExists is configured, it creates the database if it doesn't exists.
         /// </summary>
         /// <typeparam name="TSource">The type of database documents.</typeparam>
@@ -107,7 +107,12 @@ public async Task<CouchDatabase<TSource>> CreateDatabaseAsync<TSource>(string da
                 throw new ArgumentNullException(nameof(database));
             }
 
-            if (!_systemDatabases.Contains(database) && !new Regex(@"^[a-z][a-z0-9_$()+/-]*$").IsMatch(database))
+            //if (!_systemDatabases.Contains(database) && !new Regex(@"^[a-z][a-z0-9_$()+/-]*$").IsMatch(database))
+            //{
+            //    throw new ArgumentException($"Name {database} contains invalid characters. Please visit: https://docs.couchdb.org/en/stable/api/database/common.html#put--db", nameof(database));
+            //}
+
+            if (_systemDatabases.Contains(database))
             {
                 throw new ArgumentException($"Name {database} contains invalid characters. Please visit: https://docs.couchdb.org/en/stable/api/database/common.html#put--db", nameof(database));
             }
@@ -158,7 +163,8 @@ public async Task DeleteDatabaseAsync<TSource>(string database) where TSource :
                 .SendRequestAsync()
                 .ConfigureAwait(false);
 
-            if (!result.Ok) {
+            if (!result.Ok)
+            {
                 throw new CouchException("Something went wrong during the delete.", "S");
             }
         }
@@ -168,7 +174,7 @@ public async Task DeleteDatabaseAsync<TSource>(string database) where TSource :
         #region CRUD reflection
 
         /// <summary>
-        /// Returns an instance of the CouchDB database of the given type. 
+        /// Returns an instance of the CouchDB database of the given type.
         /// If EnsureDatabaseExists is configured, it creates the database if it doesn't exists.
         /// </summary>
         /// <typeparam name="TSource">The type of database documents.</typeparam>
@@ -179,7 +185,7 @@ public CouchDatabase<TSource> GetDatabase<TSource>() where TSource : CouchDocume
         }
 
         /// <summary>
-        /// Creates a new database of the given type in the server. 
+        /// Creates a new database of the given type in the server.
         /// The name must begin with a lowercase letter and can contains only lowercase characters, digits or _, $, (, ), +, - and /.s
         /// </summary>
         /// <typeparam name="TSource">The type of database documents.</typeparam>
@@ -235,7 +241,7 @@ public CouchDatabase<TUser> GetUsersDatabase<TUser>() where TUser : CouchUser
         #region Utils
 
         /// <summary>
-        /// Determines whether the server is up, running, and ready to respond to requests. 
+        /// Determines whether the server is up, running, and ready to respond to requests.
         /// </summary>
         /// <returns>true is the server is not in maintenance_mode; otherwise, false.</returns>
         public async Task<bool> IsUpAsync()
@@ -249,7 +255,7 @@ public async Task<bool> IsUpAsync()
                     .ConfigureAwait(false);
                 return result.Status == "ok";
             }
-            catch(CouchNotFoundException)
+            catch (CouchNotFoundException)
             {
                 return false;
             }
@@ -305,7 +311,7 @@ protected virtual void Dispose(bool disposing)
         {
             if (_settings.AuthenticationType == AuthenticationType.Cookie && _settings.LogOutOnDispose)
             {
-                AsyncContext.Run(() => LogoutAsync().ConfigureAwait(false));
+                _ = AsyncContext.Run(() => LogoutAsync().ConfigureAwait(false));
             }
             _flurlClient.Dispose();
         }

src/CouchDB.Driver/CouchDatabase.cs

@@ -274,7 +274,7 @@ private async Task<List<TSource>> SendQueryAsync(Func<IFlurlRequest, Task<HttpRe
 
             return findResult.Docs.ToList();
         }
-        
+
         /// Finds all documents with given IDs.
         /// </summary>
         /// <param name="docIds">The collection of documents IDs.</param>

src/CouchDB.Driver/CouchQueryProvider.cs

@@ -85,7 +85,7 @@ public object GetCouchList<T>(string body)
         {
             FindResult<T> result = _flurlClient
                 .Request(_connectionString)
-                .AppendPathSegments(_db, "_find")
+                .AppendPathSegments(Uri.EscapeDataString(_db), "_find")
                 .WithHeader("Content-Type", "application/json")
                 .PostStringAsync(body).ReceiveJson<FindResult<T>>()
                 .SendRequest();
@@ -142,7 +142,7 @@ private object InvokeUnsupportedMethodCallExpression(object result, MethodCallEx
             MethodInfo queryableMethodInfo = methodCallExpression.Method;
             Expression[] queryableMethodArguments = methodCallExpression.Arguments.ToArray();
 
-            // Since Max and Min are not map 1 to 1 from Queryable to Enumerable 
+            // Since Max and Min are not map 1 to 1 from Queryable to Enumerable
             // they need to be handled differently
             MethodInfo FindEnumerableMethod()
             {

src/CouchDB.Driver/QueryTranslator.cs

@@ -6,7 +6,7 @@
 
 #pragma warning disable IDE0058 // Expression value is never used
 namespace CouchDB.Driver
-{    
+{
     internal partial class QueryTranslator : ExpressionVisitor
     {
         private readonly CouchSettings _settings;
@@ -22,7 +22,7 @@ internal string Translate(Expression expression)
             _sb = new StringBuilder();
             _sb.Append("{");
             Visit(expression);
-            
+
             // If no Where() calls
             if (!_isSelectorSet)
             {