Add a ParameterCollection constructor overload

Author: cedx

src/Sql/Parameter.cs

@@ -64,31 +64,31 @@ public static implicit operator Parameter((string Name, object? Value) parameter
 	/// </summary>
 	/// <param name="parameter">The tuple providing the parameter properties.</param>
 	/// <returns>The parameter corresponding to the specified tuple.</returns>
-	public static implicit operator Parameter((string Name, object? Value, DbType? DbType) parameter) =>
+	public static implicit operator Parameter((string Name, object? Value, DbType DbType) parameter) =>
 		new(parameter.Name, parameter.Value) { DbType = parameter.DbType };
 
 	/// <summary>
 	/// Creates a new parameter from the specified tuple.
 	/// </summary>
 	/// <param name="parameter">The tuple providing the parameter properties.</param>
 	/// <returns>The parameter corresponding to the specified tuple.</returns>
-	public static implicit operator Parameter((string Name, object? Value, DbType? DbType, int? Size) parameter) =>
+	public static implicit operator Parameter((string Name, object? Value, DbType DbType, int Size) parameter) =>
 		new(parameter.Name, parameter.Value) { DbType = parameter.DbType, Size = parameter.Size };
 
 	/// <summary>
 	/// Creates a new parameter from the specified tuple.
 	/// </summary>
 	/// <param name="parameter">The tuple providing the parameter properties.</param>
 	/// <returns>The parameter corresponding to the specified tuple.</returns>
-	public static implicit operator Parameter((string Name, ParameterDirection Direction, DbType? DbType) parameter) =>
+	public static implicit operator Parameter((string Name, ParameterDirection Direction, DbType DbType) parameter) =>
 		new(parameter.Name) { DbType = parameter.DbType, Direction = parameter.Direction };
 
 	/// <summary>
 	/// Creates a new parameter from the specified tuple.
 	/// </summary>
 	/// <param name="parameter">The tuple providing the parameter properties.</param>
 	/// <returns>The parameter corresponding to the specified tuple.</returns>
-	public static implicit operator Parameter((string Name, ParameterDirection Direction, DbType? DbType, int? Size) parameter) =>
+	public static implicit operator Parameter((string Name, ParameterDirection Direction, DbType DbType, int Size) parameter) =>
 		new(parameter.Name) { DbType = parameter.DbType, Direction = parameter.Direction, Size = parameter.Size };
 
 	/// <summary>

src/Sql/ParameterCollection.cs

@@ -35,6 +35,16 @@ public ParameterCollection(Parameter parameter): this([parameter]) {}
 	public ParameterCollection(string name, object? value = null, DbType? dbType = null, int? size = null):
 		this(new Parameter(name, value) { DbType = dbType, Size = size }) {}
 
+	/// <summary>
+	/// Creates a new parameter list that contains the specified parameter.
+	/// </summary>
+	/// <param name="name">The parameter name.</param>
+	/// <param name="direction">The parameter direction.</param>
+	/// <param name="dbType">The parameter database type.</param>
+	/// <param name="size">The parameter maximum size, in bytes.</param>
+	public ParameterCollection(string name, ParameterDirection direction, DbType dbType, int? size = null):
+		this(new Parameter(name) { DbType = dbType, Direction = direction, Size = size }) {}
+
 	/// <summary>
 	/// Gets the parameter with the specified name.
 	/// </summary>