flag value will be reset on usercontrol paint event

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.NET3.0

C#

.NET

user-controls

Created Winusercontrol consist of 1 form and 1 panel. Draw some text on paint event of panel of user control. Add reference of usercontrol in my application.

usercontrol code:

bool flag=false;
public void Somthing()
{
  ///some code...
  ///
  flag=true;
}

protected void panel_paint(PainteventArgs e)
{
 if(flag==true)
   //draw some text
}

Form Application code:

private void frmMain_Load(object sender, EventArgs e)   
{
   usercontrol obj=new usercontrol();
   obj.Somthing();
}

when i created object of library and call Somthing(). flag value will be false. so no text will be drawn i dont know why flag value will be reset