converting double to string...

Johan

Hi all

i'm a new in C#. I got a problem like this.

I want to obtain any selected item on ListBox. Those ListBox contain numerical value for example 5 , 10 , 12.5 , 30 ......
The problem appear when i want to convert the 12.5 into double, i alwayas got 125.0 not 12.5 it seLf. Here my code to obtain the value from the ListBox

arr variabel is an ArrayList.

            foreach (object itemChecked in listBox1.CheckedItems)
            {
                arr.Add(Double.Parse(itemChecked.ToString()));
            } any sugesstion for me ?

thx all.

10 Replies

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Johan16y ago
thank's for helping guy's. sorry for taking so Long to reply back.

i still got no luck with it.

i cannot use comma as the separator for it.
Gomathi Palaniswamy16y ago
Hi friend,

try like this
```
string s = "100";

double d = Double.parse(s);

s = d.ToString("0.00");
```

Roy S16y ago

Maybe the dot in "12.5" doesn't mean a decimal point but a way to seperate the numbers as in 1.000.000 (which would be 1 million).

foreach (object itemChecked in listBox1.CheckedItems)
{
    arr.Add(Double.Parse(itemChecked.ToString().Replace('.', ',')));
}

Hirendra Sisodiya16y ago
Hello Johan
we can use 'parse' and 'convert' method for doing it, but you are still in problem after doing same things so please check itemChecked.ToString() value .

thanks
Rakesh Jha16y ago
please provide complete code, so that we can resolve this problem.

Suthish Nair16y ago

try..

int i = 0;
ArrayList arr = new ArrayList();
for (i = 0; i <= ListBox1.GetSelectedIndices.Count - 1; i++) {
 arr.Add(Convert.ToDouble(ListBox1.Items(ListBox1.GetSelectedIndices(i)).Value.ToString()));
}


Dim i As Integer
Dim arr As New ArrayList
For i = 0 To ListBox1.GetSelectedIndices.Count - 1
arr.Add(Convert.ToDouble(ListBox1.Items(ListBox1.GetSelectedIndices(i)).Value.ToString()))
Next

Johan16y ago
thx for the answer, but it still doesn't give me the result.

the 12.5 still become 125.0 not 12.5 in double format.

is there any other way ?

thx.
Suthish Nair16y ago
Rakesh method is direct and simple.

Another way,

double value = double.Parse(itemChecked.ToString());

arr.Add(value);
Deepthi Aravind16y ago
Hi Johan.
Which control you are using??
Rakesh Jha16y ago
you can try this.
foreach (object itemChecked in listBox1.SelectedItems)
{
arr.Add(Convert.ToDouble(itemChecked.ToString()));
}