How to increase one number in label on click

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Hello, Guys, I want to know how to increase one number in the label on click I have a label in my win form I want when I click on this label so 1 number increase in this label for example if label.text = o; so when I click it so it make 1, then 2, then 3 soon is it possible please help me about it
Thanks

What I have tried:

for (int i = 0; i =< label1.Text; i++)
            { 
                
            }

Posted 14-Mar-17 2:47am

Member 9983063

Updated 14-Mar-17 3:06am

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[no name] 14-Mar-17 8:49am

Okaaaayyyy, what does a for loop have to do with your click event? Where is the code where you are converting the label text to a number and doing your addition?

Member 9983063 14-Mar-17 9:01am

i am using this for loop on my click event
for (int i = 0; i =< label1.Text; i++)
{

}

CHill60 14-Mar-17 9:07am

The point @NotPoliticallyCorrect is making is that you do not need a loop, you are not converting the label text to a number, you are not adding anything to the value.

[no name] 14-Mar-17 9:28am

Why would you think that would do anything at all?

Karthik_Mahalingam 14-Mar-17 9:09am

why do you need 'for loop" to display the count?

2 solutions

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CHill60 · Accepted Answer · 2017-03-14T03:06:00

Solution 2

As an alternative to Solution 1, here is a solution that looks at the current contents of the label and increments whatever is already there (This code would be in your button's Click event)

var curr = 0;
if(int.TryParse(label1.Text, out curr))
    curr++;
label1.Text = curr.ToString();

Posted 14-Mar-17 3:06am

CHill60

Comments

Bryian Tan 14-Mar-17 9:08am

Nice!!! I was thinking to post the same, but I was too slow :)

CHill60 14-Mar-17 9:13am

:-) Fingers of fire

Graeme_Grant 14-Mar-17 9:19am

I thought the same however the value has to be loaded at some point. Might as well show how to do it properly.

CHill60 14-Mar-17 9:28am

"Properly" is subjective. If you note, my solution caters for the occasion where the label does not already contain a number. It is also completely self-contained and does not rely on a backing variable (used to be called global variables back in the day). General consensus seems to favour variable declaration as close as possible to usage (aka limiting scope of variable) - which is what several Code Review tools also suggest.

Graeme_Grant 14-Mar-17 9:31am

I don't disagree. I live in the WPF MVVM world, not WinForm. So you need a variable to alter it.

Graeme_Grant · Accepted Answer · 2017-03-14T02:52:00

Solution 1

Have an integer variable declared in the root of the code-behind...

C#

int Count = 0;

then when you want to update the label:

C#

label.Text = ++Count.ToString();

Posted 14-Mar-17 2:52am

Graeme_Grant

Comments

Bryian Tan 14-Mar-17 9:05am

should be

label.Text = (++Count).ToString()

to avoid the error "The operand of an increment or decrement operator must be a variable, property or indexer"

Graeme_Grant 14-Mar-17 9:18am

Yeah ... that too! lol