How to show number of users in chart control in asp.net

Question

1.00/5 (2 votes)

See more:

I want to show total number of users whose data is stored in a table in SQL database which is based on year in chart control in asp.net i.e. all the users who registered in a particular year, these data should be displayed for all the months in a year. Firstly I have to show data for all the years. Than the user can select a particular year from the dropdownlist and than populate the chart control for that particular year. When the user has selected a year from dropdownlist than for that particular year the data should be populated for individual months example: 40 users from Jan, 85 from March, etc.

SQL

int month = 1;

for (int i = month; i <= 12; i++)
{
    var usercount = (from u in context.Profiles
                     where u.CreatedOn.Month == month
                     select u).Count();
}

I am using entity framework for writing the database related codes.

Posted 14-Apr-15 20:28pm

Amit Jangid

Updated 14-Apr-15 21:24pm

Sergey Alexandrovich Kryukov

v3

Add a Solution

Comments

Sergey Alexandrovich Kryukov 15-Apr-15 3:25am

What have you tried so far?
—SA

2 solutions

Solution 1

You could find a lot of information on a good choice of charts libraries. See, for example:
https://msdn.microsoft.com/en-us/magazine/dd453008.aspx[^],
http://www.asp.net/web-pages/overview/data/7-displaying-data-in-a-chart[^],
http://www.w3schools.com/aspnet/webpages_chart.asp[^].

—SA

Posted 14-Apr-15 21:27pm

Sergey Alexandrovich Kryukov

Comments

Maciej Los 15-Apr-15 5:55am

Good advice ;)

Sergey Alexandrovich Kryukov 15-Apr-15 9:00am

Thank you, Maciej.
—SA

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Maciej Los · Accepted Answer · 2015-04-14T21:37:00

If you want to get the count of users created each month of specified year, use:

C#

//get distinct years and bind data to combobox
var years = context.Profiles
                  .Select(u=>u.CreatedOn.Year)
                  .Distinct()
                  .ToList();
ComboBox1.DataSource = years;

C#

int uyear = 2014; //ComboBox1 value
var qry = context.Profiles
                  .Where(u=>u.CreatedOn.Year == uyear)
                  .GroupBy(u=> u.CreatedOn.Month)
                  .Select(grp=>new{month=grp.Key, count=grp.Count()})
                  .ToList();
//now, you can bind data from qry object to GridView, ListView, etc.

Good luck!