error setFilter(...);Can you help me,please?

[tranminhquy@…]

I add :
layerObj objLayber = objMapServer.getLayerByName("District label");
objLayber.setFilter("id = 1");
objimg = objMapServer.draw();-> run goog;



But When I add: 
layerObj objLayber = objMapServer.getLayerByName("District label");
objLayber.setFilter("id != 1"); //(or id <1 )//(or id >1 )
objimg = objMapServer.draw();-> exception

[System.ApplicationException] = {"msDrawMap(): Image handling error. Failed to
draw layer named 'District label'.;prepare_database(): Query error. Error
executing POSTGIS DECLARE (the actual query) statement: 'DECLARE mycursor BINARY
CURSOR FOR SELECT \"name\"::text,asbinary(force_collect...





My file source:


using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.ComponentModel;
using System.Drawing;


namespace vietnamarilines
{
    public partial class MapStream : System.Web.UI.Page
    {
        mapObj objMapServer;
       // Mapserver.Mapserver objMapServer1;
        /// <summary>
        /// Do a Map Action and send an image stream
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Page_Load(object sender, EventArgs e)
        {
            try
            {
                if (Request.Params["type"] != null)
                {
                    string strType = Request.Params["type"].ToString();
                    objMapServer = (mapObj)Session["Map"];
                    layerObj objLayber = objMapServer.getLayerByName("District
label");
                    objLayber.setFilter("id != 1");
                    RefreshMap(strType);
                    
                    
                }
            }
            catch (Exception ex)
            {
                Response.Write(ex.Message);
            }
        }


        /// <summary>
        /// Refresh MapServer map and send the image stream to output
        /// </summary>
        private void RefreshMap(string strType)
        {
            try
            {

                imageObj objimg = null;
                if (strType == "map")
                {

                    objMapServer.width = 600;
                    objMapServer.height = 460;
                    objimg = objMapServer.draw();

                }
                else if (strType == "demo")
                {
                    objimg = objMapServer.drawReferenceMap();
                }
                else
                {
                    objimg = objMapServer.drawLegend();
                }
                byte[] byImg = objimg.getBytes();
                using (MemoryStream objStream = new MemoryStream(byImg))
                {
                    System.Drawing.Image img =
System.Drawing.Image.FromStream(objStream);
                    Bitmap bp = (Bitmap)img;
                    bp.Save(Response.OutputStream,
System.Drawing.Imaging.ImageFormat.Gif);
                }

            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
    }
}

[szekerest]

Could you post the complete error string you have?

[tamas]

We haven't enough information to move forward with this. At least the complete postgis error would be required. Closing as invalid for now. Will reopen on further information.