Add property FbCommand.NamedParameters (FirebirdSQL#1161) (FirebirdSQL#1168)

Co-authored-by: Daniel Trubač <trubacd@elektlabs.cz>

Author: dant02

src/FirebirdSql.Data.FirebirdClient.Tests/FbCommandTests.cs

@@ -187,6 +187,22 @@ public async Task NamedParametersReuseTest()
 }
 }
 
+[Test]
+public async Task NamedParametersPublicAccessor()
+{
+await using (var command = new FbCommand("select * from test where int_field >= @x1 and int_field <= @x2", Connection))
+{
+Assert.IsNotNull(command.NamedParameters, "Unexpected null reference.");
+Assert.IsTrue(command.NamedParameters.Count == 0, "Expected count 0 of named parameters before command prepare.");
+
+await command.PrepareAsync();
+
+Assert.IsTrue(command.NamedParameters.Count == 2, "Expected count 2 of named parameters after command prepare.");
+Assert.AreEqual(command.NamedParameters[0], "@x1");
+Assert.AreEqual(command.NamedParameters[1], "@x2");
+}
+}
+
 [Test]
 public async Task ExecuteStoredProcTest()
 {

src/FirebirdSql.Data.FirebirdClient/FirebirdClient/FbBatchCommand.cs

@@ -192,6 +192,16 @@ public int BatchBufferSize
 }
 }
 
+/// <summary>
+/// Gets collection of parameters parsed from the query text during command prepare.
+/// </summary>
+[Browsable(false)]
+[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
+public IReadOnlyList<string> NamedParameters
+{
+get { return _namedParameters; }
+}
+
 #endregion
 
 #region Internal Properties

src/FirebirdSql.Data.FirebirdClient/FirebirdClient/FbCommand.cs

@@ -198,6 +198,16 @@ public int FetchSize
 }
 }
 
+/// <summary>
+/// Gets collection of parameters parsed from the query text during command prepare.
+/// </summary>
+[Browsable(false)]
+[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
+public IReadOnlyList<string> NamedParameters
+{
+get { return _namedParameters; }
+}
+
 #endregion
 
 #region Protected DbCommand Properties