How to count labels with red backcolor

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Hi friends,

I have ten labels in my Winforms app in c#, they have back color "red".

Does any one can just help to write this as output

The number of red labels are: 10.

Thank You!

What I have tried:

I try with counter, but no result.

Label lb;
            int count = 1; ;
            if (lb.BackColor == Color.Red)
{ 
count++;
}

                label6.Text = count.ToString();

Posted 1-Feb-17 2:52am

h5h5

Updated 1-Feb-17 18:51pm

CHill60

v2

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CHill60 1-Feb-17 8:56am

What CODE have you tried? Share it.
Is this Winforms or WPF?

[no name] 1-Feb-17 8:59am

"Does any one can just help to write this as output", sure thing.
Console.WriteLine("The number of red labels are: 10.");

h5h5 1-Feb-17 9:10am

In fact counting them
not just writting, the code to count labels and then as out put, to be 10

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CHill60 · Answer 1 · 2017-02-01T03:13:00

This is how you probably want to do it...

Initialise a integer counter.

Use a foreach loop (Ref:foreach, in (C# Reference)[^]) to step through all of the controls on your form using the Controls collection of the form (Ref: How to: Access Controls by using the Controls Collection[^] )

Test the type of each control using control.GetType() (Ref: Object.GetType Method (System)[^] ) and compare it to the typeof Label (Ref:typeof (C# Reference)[^])

If they match types then you can check to see if BackColor is Color.Red ... Hint, you might have to cast the control to an explicit Label in order to access the BackColor property (Ref: Casting and Type Conversions (C# Programming Guide)[^] )

You can use MessageBox.Show() to display the results (Ref: MessageBox.Show Method (System.Windows.Forms)[^] )

Maciej Los · Answer 2 · 2017-02-01T11:27:00

Solution 3

WinForm[^] inherits from Control and Control contains a collection of Controls[^] ;)
So, you can iterate through the collection of controls. But, i need to warn you! Some of controls can contain another controls...

Posted 1-Feb-17 11:27am

Maciej Los

Karthik_Mahalingam · Answer 3 · 2017-02-01T18:51:00

Solution 4

try this

C#

int count = 0;
            foreach (Control c in this.Controls)
            {
                if (c.GetType() == typeof(Label))
                    if (((Label)c).BackColor == Color.Red)
                        count++;
            }

Note: if the labels are present in any container control, then you will have to iterate the container also, like this[^]

Posted 1-Feb-17 18:51pm

Karthik_Mahalingam

Comments

h5h5 2-Feb-17 8:42am

HI Karthik, I used it, there is no error, but when I want to show then number of labels with red colore there is 0 labels in fact I have 10 red labels.
I used that code and this one:
label.text= "Red Labeles:" + count;
and the result is
Red Labels: 0

h5h5 3-Feb-17 3:44am

I try this, all labels are in a Form not in container.
int count = 0;
foreach (Control c in this.Controls)
{
if (c.GetType() == typeof(Label))
if (((Label)c).BackColor == Color.Red)
count++;
}
label16.Text = "Label: " + count;

I have again the same problem, there are not counting the result is again Label: 0

Karthik_Mahalingam 2-Feb-17 8:44am

does the label controls are placed in the form only or inside a container?

h5h5 2-Feb-17 9:30am

Label are inside the group box, in the load worm they are hidden, when I push button result, labels are showed, there many labels but I want just labels with red color to count and as output to be: Red Labels are: 10

Karthik_Mahalingam 2-Feb-17 10:58am

Use groupboxname.controls in place of "this.controls"

h5h5 6-Feb-17 3:05am

I try this:
int count = 0;
foreach (Control c in this.Controls)
{
if (c is Label)
if (c.BackColor == Color.Red)
count++;
}
MessageBox.Show(count.ToString());

I have the problem again, there is no counting the red labels.
As a result in the end is again number 0. It take the value of "int count=0"
If I remove that: if (c.BackColor == Color.Red)
then all labels are counting.

Karthik_Mahalingam 6-Feb-17 8:34am

keep a break point in "if (c.BackColor == Color.Red)" and check the actual color. it might be some RGB value also..

h5h5 6-Feb-17 8:56am

Maybe I am not to clear. My Labels are hide, when I click button ex. in textbox named txtRun, I write run, in textbox named txt play, I write play. Play and Run are right ansewr, so when I click buton, there is showed two labels with red color, and e mesagebox with mesage '' red lables: 2'' .....

Karthik_Mahalingam 6-Feb-17 10:50am

post a screenshot of it.

h5h5 6-Feb-17 12:21pm

How?
I cant post screenshot

Karthik_Mahalingam 6-Feb-17 12:22pm

https://snag.gy/

h5h5 6-Feb-17 12:26pm

https://snag.gy/lLD7EZ.jpg

Karthik_Mahalingam 6-Feb-17 12:31pm

foreach (Control c in groupboxname.Controls)

h5h5 6-Feb-17 12:41pm

the black line are not gropubox,
the are just line shape tool, labels are in form

Karthik_Mahalingam 6-Feb-17 12:42pm

ok then do one thing..
add an array
var lables = new Label[]{ lable1, label1,lablel2};
foreach (Label in lables )

h5h5 6-Feb-17 12:46pm

sorry you are right there is another groupbox, now it is ok, but there is no filter, it takes all labels, no just reds?
I used this code:
foreach (Control c in grUnit1.Controls)
{

if (c.GetType() == typeof(Label))
if (((Label)c).BackColor == Color.Red)
count++;

}
label16.Text = "Red Labels" + count;

Karthik_Mahalingam 6-Feb-17 12:50pm

Put a message box and what you arw getting here
Label)c).BackColor

h5h5 6-Feb-17 17:03pm

Please look again that printscreen.
https://snag.gy/upAHDJ.jpg

Karthik_Mahalingam 6-Feb-17 23:59pm

ok

h5h5 10-Feb-17 5:06am

int count = 0;
for (int i = 0; i==Controls.Count; i++)
{
if (Controls[i] is Label && Controls[i].BackColor == Color.Red)
//if (c.GetType() == typeof(Label))
//if (((Label)c).BackColor == Color.Red)
count++;
}
MessageBox.Show("tota" + count);

I used this one, there also no result... :(
I am stuck

Karthik_Mahalingam 10-Feb-17 5:07am

ping me tonight 8pm, do you have team viewer?

Karthik_Mahalingam 6-Feb-17 12:50pm

Am sending from my mobile
Ignore the typo

h5h5 10-Feb-17 5:32am

if I use check box it works, just with labels is problem

int count = 0;
foreach (Control c in Panel1.Controls)
{
if (c is CheckBox && (c as CheckBox).Checked)
{
count++;
}
}
Label1.Text = "Count: " + count;

That is correct

Karthik_Mahalingam 10-Feb-17 5:34am

ok fine..
post the designer file code.

h5h5 10-Feb-17 9:18am

I solve it, I think the problem was, that my labels are Hide(). So, is there any opportunity to count all labels except those that are hide(). Ex. Label1.hide() Label2.hide() Program is counting also this labels. How to stop counting hide labels.

Karthik_Mahalingam 10-Feb-17 9:38am

are u online?

h5h5 11-Feb-17 12:36pm

Karthik, thank you for your time and help. I solve it.
I had some labels hide. and counter count all of them. I used this code and everything is ok:
if ((c is Label) && (c.BackColor == Color.Lime) && (c.Visible))
Thank you so much!

Karthik_Mahalingam 11-Feb-17 13:24pm

cool..
good, close this post.

h5h5 6-Feb-17 12:23pm

How?
I cant post screenshot?

Karthik_Mahalingam 6-Feb-17 12:24pm