C# code used in windows application i got below error

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hi i am trying zoom in and zoom out in my code. .jpeg files it is working fine.
but when i try same with .pdf file zoom out i m getting below error.please help me

System.NullReferenceException: Object reference not set to an instance of an object. <br />
<br />
at CMSSystem.ImageViewer.btnZoomOut_Click(Object sender, EventArgs e)<br />
at System.Windows.Forms.Control.OnClick(EventArgs e)<br />
at System.Windows.Forms.Button.OnClick(EventArgs e)<br />
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)<br />
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)<br />
at System.Windows.Forms.Control.WndProc(Message& m)<br />
at System.Windows.Forms.ButtonBase.WndProc(Message& m)<br />
at System.Windows.Forms.Button.WndProc(Message& m)<br />
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)<br />
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)<br />
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntP

Posted 7-Mar-13 0:04am

kanna443

Updated 7-Mar-13 0:13am

Orcun Iyigun

v2

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Orcun Iyigun 7-Mar-13 6:16am

Share your code and tell us where you get the exception please

OriginalGriff 7-Mar-13 6:17am

Without your code? We can't help much.
Either put a breakpoint on the first line in the btnZoomOut_Click method and step through looking for the null reference, or post the code and indicate which line is causing the error.
Use the "Improve question" widget to edit your question and provide better information.

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Kolkata .NET · Accepted Answer · 2013-03-07T00:21:00

Solution 1

one or multiple class/object(s) being used/involved is not initialised. need to look into the parameters of the function being invoked. or in which it is written.

Posted 7-Mar-13 0:21am

Kolkata .NET