How to create a session manager in .Net ?

To create a SessionManager to save User objects in memory. It would be HashMap of HaspMaps.
It can be used as:

SessionManager MySessionManager= New SessionManager()
Student S1 = New Student ("Saurabh");
Student S2 = New Student ("Sandeep");
Student S3 = New Student ("Deepak");

//To create session
MySessionManager.createSession(S1);
MySessionManager.createSession(S2);
//SAVING S1 MARKS
Marks phyMarks = New Marks ("Physcis", 90);
MySessionManager.Save(S1, "Physics", phyisicsMarks); //Physics is the key
Marks chemMarks New Marks("Chemistry",85);
MySessionManager.Save(S1, "Chemistry",chemistryMarks);
Marks mathsmarks = New Marks("Mathematics",100);
MySessionManager.Save(S1, "Mathematics" ,mathsMarks);

//SAVING S2 MARKS
Marks phyMarks = New Marks ("Physcis", 90);
MySessionManager.Save(S2, "Physics", phyMarks); //Physics is the key
Marks chemMarks New Marks("Chemistry",85)
MySessionManager.Save(S2, "Chemistry",chemMarks);
Marks mathsmarks = New Marks("Mathematics",100);
MySessionManager.Save(S2, "Mathematics" ,mathsMarks);

//SAVING S3 MARKS. NOTE: SESSION OF S3 IS NOT AVAILABLE. SO FIRST SESSION OF
S3 SHOULD BE CREATED AND THEN DATA SHOULD BE SAVED
Marks phyMarks = New Marks ("Physcis", 90);
MySessionManager.Save(S3, "Physics", phyMarks); //”Physics” is the key
Marks chemMarks New Marks("Chemistry",85);
MySessionManager.Save(S3, "Chemistry",chemMarks);
Marks mathsmarks = New Marks("Mathematics",100);
MySessionManager.Save(S3, "Mathematics" ,mathsMarks);

///How to retrieve data
Out.Print ("Phyiscis Marks of S1," & MySessionManager.get(S1, "Physics").marks);
Out.Print ("Phyiscis Marks of S3," & MySessionManager.get(S1, "chemistry").marks);

IN REAL WORLD SCENARIO, S1, S2, S3 SHOULD NOT BE PASSED TO
MYSESSIONMANAGER. THEY WOULD BE OBTAINED FROM CONTEXT.

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Tech-Giant(Jargons.. for Professionals): How to take Screenshot of panel,control and save it in a JPG format ?

Tech-Giant(Jargons.. for Professionals): How to take Screenshot of panel,control and save it in a JPG format ?

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How to take Screenshot of panel,control and save it in a JPG format ?

You can create a bitmap of screen and then save it give the stream or fileName and then dispose the object of screenshot.

Bitmap theScreenShot = new Bitmap(Screen.PrimaryScreen.Bounds.Width,
Screen.PrimaryScreen.Bounds.Height, PixelFormat.Format32bppArgb);
theScreenShot.Save(stream_or_filename, ImageFormat.Jpeg);
theScreenShot.Dispose();

Another way to save the panel as a jpg format and you can take a print of your control using below method.
Use this event on your form :-
_document.PrintPage += new PrintPageEventHandler(document_PrintPage);

/// Prepare the page to be print for the area of the control to be printed.
private void document_PrintPage(object sender, PrintPageEventArgs e)
{
this.Dock = System.Windows.Forms.DockStyle.None;
this.Size = Temp_Image.Size;
//Takes away focus from any printed controls to make sure output is what we want.
this.Focus();
this.Refresh();
this.DrawToBitmap(Temp_Image, New System.Drawing.Rectangle(0, 0, Temp_Image.Width, Temp_Image.Height));
this.Dock = System.Windows.Forms.DockStyle.Fill;
e.Graphics.DrawImage(Temp_Image, e.MarginBounds);
e.Graphics.Clip = new Region(e.MarginBounds);
}
By this method you can print your control you just pass the object of your control (control will be panel,treeView,listView)and this will calculate the height ,width and then call the print method ,print preview or save as jpg file.

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