[UMN_MAPSERVER-USERS] Mapscript CSharp (C#) Memory Leak?

[David Lowther]

Hello All,   I’ve been toying with the mapscript_csharp.dll in VS2005 and cannot even begin to tell you how thrilled I am to have it. Thanks SO much.   I’ve encountered what I think might be a memory leak.   The exception text that I get is below and the entire source code of the application is available at: http://www.coordinatesolutions.com/download/mapservertestvb.zip   I get the exception after choosing ID from the drop down and clicking the map 15 times (why 15, I have no idea). When running the code from VS2005 the exception occurs at different places.   Any ideas?   David Lowther    Coordinate Solutions, Inc. 501 N.E. 15th Street Oklahoma City, OK 73104 405.246.9396 (Voice) 405.227.0781 (Fax) www.coordinatesolutions.com   See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.   ************** Exception Text ************** System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.    at mapscriptPINVOKE.new_pointObj(Double jarg1, Double jarg2, Double jarg3, Double jarg4)    at pointObj..ctor(Double x, Double y, Double z, Double m)    at MapserverTestVB.Form1.Pixel2Geo(pointObj pt) in D:\Develop\MapserverTestVB\MapserverTestVB\Form1.vb:line 188    at MapserverTestVB.Form1.ID(pointObj ClickPt) in D:\Develop\MapserverTestVB\MapserverTestVB\Form1.vb:line 109    at MapserverTestVB.Form1.PictureBox1_MouseUp(Object sender, MouseEventArgs e) in D:\Develop\MapserverTestVB\MapserverTestVB\Form1.vb:line 97    at System.Windows.Forms.Control.OnMouseUp(MouseEventArgs e)    at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)    at System.Windows.Forms.Control.WndProc(Message& m)    at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)    at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)    at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)     ************** Loaded Assemblies ************** mscorlib     Assembly Version: 2.0.0.0     Win32 Version: 2.0.50727.42 (RTM.050727-4200)     CodeBase: file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll ---------------------------------------- MapserverTestVB     Assembly Version: 1.0.0.0     Win32 Version: 1.0.0.0     CodeBase: file:///D:/Develop/MapserverTestVB/MapserverTestVB/bin/Debug/MapserverTestVB.exe ---------------------------------------- Microsoft.VisualBasic     Assembly Version: 8.0.0.0     Win32 Version: 8.0.50727.42 (RTM.050727-4200)     CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Microsoft.VisualBasic/8.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualBasic.dll ---------------------------------------- System     Assembly Version: 2.0.0.0     Win32 Version: 2.0.50727.42 (RTM.050727-4200)     CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll ---------------------------------------- System.Windows.Forms     Assembly Version: 2.0.0.0     Win32 Version: 2.0.50727.42 (RTM.050727-4200)     CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll ---------------------------------------- System.Drawing     Assembly Version: 2.0.0.0     Win32 Version: 2.0.50727.42 (RTM.050727-4200)     CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll ---------------------------------------- System.Configuration     Assembly Version: 2.0.0.0     Win32 Version: 2.0.50727.42 (RTM.050727-4200)     CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll ---------------------------------------- System.Xml     Assembly Version: 2.0.0.0     Win32 Version: 2.0.50727.42 (RTM.050727-4200)     CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll ---------------------------------------- System.Runtime.Remoting     Assembly Version: 2.0.0.0     Win32 Version: 2.0.50727.42 (RTM.050727-4200)     CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Runtime.Remoting/2.0.0.0__b77a5c561934e089/System.Runtime.Remoting.dll ---------------------------------------- mapscript_csharp     Assembly Version: 0.0.0.0     Win32 Version: 0.0.0.0     CodeBase: file:///D:/Develop/MapserverTestVB/MapserverTestVB/bin/Debug/mapscript_csharp.DLL ----------------------------------------   ************** JIT Debugging ************** To enable just-in-time (JIT) debugging, the .config file for this application or computer (machine.config) must have the jitDebugging value set in the system.windows.forms section. The application must also be compiled with debugging enabled.   For example:   <configuration>     <system.windows.forms jitDebugging="true" /> </configuration>   When JIT debugging is enabled, any unhandled exception will be sent to the JIT debugger registered on the computer rather than be handled by this dialog box.