Only increment for one time...

Israel

Hi!

I have this code then its works well. But I need to increment only once. Means that when I click on the button its should "add" or increment ONLY once time. Then when you click again to increment a number. Its can accept. How can I do it please?

decimal d1, d2, total;

decimal.TryParse(lblResFactN.Text, out d1);

decimal.TryParse("1", out d2);

total = d1 + d2;

lblTotal.Text = total.ToString();

8 Replies

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Afzaal Ahmad Zeeshan10y ago
Accepted answer
Ok, you hadn't mentioned that part "increment first time" before in the question. What I read from your question is that you require a condition to update the value, the condition which would be true only if this is the first time user is pressing the button. Right?

So, for that purpose, what I would do would be something like this:
// Create a field for flag
bool firstTime = true;

if(firstTime) {
++d1;

// set the flag to false
firstTime = false; }
// Use the value here...
This way, you would only use the code to increment the value once. Also, this operator is efficient because it doesn't need to push multiple values on the stack.
Shubham Kumar10y ago
I think i m not getting your question like you want increment the value once on a click and then again...

see demo here https://dotnetfiddle.net/oGjCXi
Israel10y ago
@Shubham Kumar

These code are exactly as I use. But its doesnt. Please can you test it you will see that its doesnt works properly. If you want could you read well what is my big target posting this question.
Shubham Kumar10y ago
i did't test the code i just give you the idea to how to solve your problem you have to make modification on code
Israel10y ago
@Shubham Kumar

Did you test your code before to post it. Its doesnt works.
Its doesnt make the addition operation. Its just sturk.
Shubham Kumar10y ago
hi,

In your scenario you should have to use some flag like when you increment the value that time set the flag=1 and next time when again click on increment button check if flag==1 so it not increase the value

int flag=0;
if(flag==0)
{
decimal d1, d2, total;
decimal.TryParse(lblResFactN.Text, out d1);
decimal.TryParse("1", out d2);
total = d1 + d2;
lblTotal.Text = total.ToString();
flag=1;
}
Israel10y ago
But why did you take off the addition operation.
This operation should be there. Why? Because at the first time I need when I click on my button its should first make the addition operation. Then when you click at segond time its should not accept to increment again (or its should not make addition. Only when I reset my program).
Afzaal Ahmad Zeeshan10y ago
Why don't you use the following code for that?
```
decimal d1;
decimal.TryParse(lblResFactN.Text, out d1);
lblTotal.Text = (++d1).ToString();
```
This would just increment the value and then write in the label. There is no requirement to add a variable, with value 1, to the variable. You can use the increment operators efficiently to update the values.