DateTime type in Sql server

[bexoan211c]

Hi, I have a problem with DateTime type in ADO.NET & Sql Server
I have the following stored procedure and I executed it successfully in Query Analysis of Sql server. However, if i use it in ADO.NET, it didn't return me any results and it didn't throw any errors.

This is my stored procedure:
CREATE PROCEDURE dbo.GetMessages
(
@RoomName VARCHAR (100),
@TimeFrom DATETIME,
@TimeTo DATETIME
)
AS
SET NOCOUNT ON

SELECT msg.Content, msg.TimeSent
FROM Message msg INNER JOIN Room r ON msg.RoomID = r.RoomID
WHERE r.RoomName = @RoomName
AND TimeSent >= @TimeFrom AND TimeSent <= @TimeTo


And this is my method in C#:

public DataTable GetMessages(string strRoomName, DateTime dtFrom, DateTime dtTo) {
SqlConnection connection = new SqlConnection(dsn);

SqlCommand command = new SqlCommand("GetMessages", connection);
command.CommandType = CommandType.StoredProcedure;

SqlParameter paramRoomName = new SqlParameter("@RoomName", strRoomName);
command.Parameters.Add(paramRoomName);

SqlParameter paramTimeFrom = new SqlParameter("@TimeFrom", SqlDbType.DateTime);
paramTimeFrom.Value = dtFrom;
paramTimeFrom.Direction = ParameterDirection.Input;
command.Parameters.Add(paramTimeFrom);

SqlParameter paramTimeTo = new SqlParameter("@TimeTo", SqlDbType.DateTime);
paramTimeTo.Direction = ParameterDirection.Input;
paramTimeTo.Value = dtTo;
command.Parameters.Add(paramTimeTo);

SqlDataAdapter adapter = new SqlDataAdapter();
adapter.SelectCommand = command;
DataTable tblMessages = new DataTable();

adapter.Fill(tblMessages);
connection.Close();
return tblMessages;
}

I think there is a difference between DateTime type of C# and Sql Server, but i don't know how to solve it. Please help me!!! Thanks in advance.