[TD-14356]<fix>:csharp remove stream_open() && stream_close() (#11083)

src/connector/C#/examples/Main.cs

@@ -20,9 +20,6 @@ namespace AsyncQueryExample
             subscribeSample.RunSubscribeWithCallback(conn, "subscribe_with_callback");
             subscribeSample.RunSubscribeWithoutCallback(conn, "subscribe_without_callback");
 
-            StreamSample streamSample = new StreamSample();
-            streamSample.RunStreamOption1(conn, "stream_sample_option1");
-
             UtilsTools.CloseConnection(conn);
         }
     }

src/connector/C#/examples/StreamSample.cs

-using System;
-using TDengineDriver;
-using Sample.UtilsTools;
-using System.Runtime.InteropServices;
-using System.Threading;
-using System.Collections.Generic;
-using System.Text;
-
-namespace Example
-{
-    public class StreamSample
-    {
-
-        public void RunStreamOption1(IntPtr conn, string table)
-        {
-
-            PrepareData(conn, table);
-            StreamOpenCallback streamOpenCallback = new StreamOpenCallback(StreamCallback);
-            IntPtr stream = TDengine.OpenStream(conn, $"select count(*) from {table} interval(1m) sliding(30s)", streamOpenCallback, 0, IntPtr.Zero, null);
-            if (stream == IntPtr.Zero)
-            {
-                throw new Exception("OPenStream failed");
-            }
-            else
-            {
-                Thread.Sleep(100000);
-                AddNewData(conn, table, 5,true);
-                Thread.Sleep(100000);
-
-                TDengine.CloseStream(stream);
-                Console.WriteLine("stream done");
-
-            }
-        }
-
-
-        public void StreamCallback(IntPtr param, IntPtr taosRes, IntPtr taosRow)
-        {
-
-            if (taosRes == IntPtr.Zero || taosRow == IntPtr.Zero)
-            {
-                return;
-            }
-            else
-            {
-                var rowData = new List<Object>();
-                rowData = UtilsTools.FetchRow(taosRow, taosRes);
-                int count = 0;
-                rowData.ForEach((item) =>
-                {
-
-                    Console.Write("{0} \t|\t", item.ToString());
-                    count++;
-                    if (count % rowData.Count == 0)
-                    {
-                        Console.WriteLine("");
-                    }
-                });
-            }
-        }
-
-        public void PrepareData(IntPtr conn, string tableName)
-        {
-            string createTable = $"create table if not exists {tableName} (ts timestamp,i8 tinyint,i16 smallint,i32 int,i64 bigint);";
-            UtilsTools.ExecuteUpdate(conn, createTable);
-            AddNewData(conn, tableName, 5);
-        }
-
-        public void AddNewData(IntPtr conn, string tableName, int numRows,bool interval = false)
-        {
-            long ts = 1646150410100;
-            Random rs = new Random();
-            StringBuilder insert = new StringBuilder();
-
-            Random rd = new Random();
-            for (int i = 0; i < numRows; i++)
-            {
-                insert.Append("insert into ");
-                insert.Append(tableName);
-                insert.Append(" values ");
-                insert.Append('(');
-                insert.Append(ts);
-                insert.Append(',');
-                insert.Append(rs.Next(sbyte.MinValue+1, sbyte.MaxValue));
-                insert.Append(',');
-                insert.Append(rs.Next(short.MinValue+1, short.MaxValue));
-                insert.Append(',');
-                insert.Append(rs.Next(int.MinValue+1, int.MaxValue));
-                insert.Append(',');
-                insert.Append(rs.Next(int.MinValue+1, int.MaxValue));
-                insert.Append(')');
-                UtilsTools.ExecuteUpdate(conn, insert.ToString());
-                insert.Clear();
-                ts += rd.Next(10000, 100000);
-                if( interval)
-                {
-                    Thread.Sleep(rs.Next(100,300) * i);
-                }
-                else
-                {
-                    continue;
-                }
-            }
-        }
-
-    }
-}
\ No newline at end of file

src/connector/C#/src/TDengineDriver/TDengineDriver.cs

@@ -179,8 +179,6 @@ namespace TDengineDriver
     /// <param name="param"> Additional parameters supplied by the client when taos_subscribe is called.</param>
     /// <param name="code"> Error code.</param>
     public delegate void SubscribeCallback(IntPtr subscribe, IntPtr tasRes, IntPtr param, int code);
-    public delegate void StreamOpenCallback(IntPtr param, IntPtr taosRes, IntPtr taosRow);
-    public delegate void StreamOpenCallback2(IntPtr ptr);
 
     public class TDengine
     {
@@ -561,33 +559,5 @@ namespace TDengineDriver
             }
 
         }
-        // Stream
-
-        /// <summary>
-        /// Used to open an stream, which can do continuous query.
-        /// </summary>
-        /// <param name="taos"> taos connection return by <see cref = "Connect"></param>
-        /// <param name="sql"> Query statement( query only)</param>
-        /// <param name="fp"> User defined callback.</param>
-        /// <param name="stime"> The time when stream computing starts. If it is 0, it means starting from now.
-        /// If it is not zero, it means starting from the specified time (the number of
-        /// milliseconds from 1970/1/1 UTC time).
-        /// </param>
-        /// <param name="param">First parameter provide by application for callback usage.
-        /// While callback,this parameter is provided to the application.</param>
-        /// <param name="callback2">The second callback function which will be called when the continuous query 
-        /// stop automatically.</param>
-        /// <returns> Return null indicate creation failed, not null for success.</returns>
-        [DllImport("taos", EntryPoint = "taos_open_stream", CallingConvention = CallingConvention.Cdecl)]
-        static extern public IntPtr OpenStream(IntPtr taos, string sql, StreamOpenCallback fp, Int64 stime, IntPtr param, StreamOpenCallback2 callback2);
-
-        /// <summary>
-        /// Used too stop data flow.
-        /// Remember to stop data flow when you stopped steam computing.
-        /// </summary>
-        /// <param name="stream"> Value returned by <see cref = "OpenStream"></param>
-        [DllImport("taos", EntryPoint = "taos_close_stream", CallingConvention = CallingConvention.Cdecl)]
-        static extern public void CloseStream(IntPtr stream);
-
     }
 }