Solved

user control - public property

Posted on 2014-02-20
3
290 Views
Last Modified: 2014-02-20
Been away from Windows Form Controls dev for a while.

I have a control that displays the date and time in a label.

I want to create a property that is visible in the visual studio "Properties" window, such that I can grab the current contents of the label any time I want to.

I think attributes are used, but I don't remember how to do it.

Thanks, and please include small 'hello world" sample C# code for me.
0
Comment
Question by:knowlton
  • 2
3 Comments
 
LVL 85

Accepted Solution

by:
Mike Tomlinson earned 500 total points
ID: 39874505
I just added a Property to the UserControl and it automatically appeared in the Properties Pane when the control was selected.

For example:
    public partial class DateTimeControl : UserControl
    {
        public DateTimeControl()
        {
            InitializeComponent();
            CurrentDateTime = DateTime.Now;
        }

        private DateTime currentDateTime;

        public DateTime CurrentDateTime
        {
            get
            {
                return this.currentDateTime;
            }
            set
            {
                this.currentDateTime = value;
                this.label1.Text = this.currentDateTime.ToString();
            }
        }

    }

Open in new window


Here it is in the Properties Pane:
Property in the Property Pane
0
 
LVL 5

Author Closing Comment

by:knowlton
ID: 39874717
Thanks!
0
 
LVL 5

Author Comment

by:knowlton
ID: 39874722
My interim solution:

namespace DateTimeControl
{
    public partial class UserControlDateTime: UserControl
    {
        public UserControlDateTime()
        {
            InitializeComponent();
        }


        [Description("DateTime displayed by the label"), Category("Data")]
        public string LabelDateTimeText
        {
            get { return labelDateTime.Text; }            
        }
        private void timerTick_Tick(object sender, EventArgs e)
        {
            DateTime dt = new DateTime();
            dt = DateTime.Now;
            labelDateTime.Text = dt.ToLongDateString() + " " + dt.ToLongTimeString();
        }

      
    }

Open in new window

0

Featured Post

Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Many of us here at EE write code. Many of us write exceptional code; just as many of us write exception-prone code. As we all should know, exceptions are a mechanism for handling errors which are typically out of our control. From database errors, t…
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…

839 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question