I have 7 checkboxes. What I want is to make one string for each of those checkboxs. Meaning if I had....
Orange apple pear plum grape tiger red
And orange pear and red where checked.
I'd get a string that produced "orange ; pear ; red"
5 Answers
What is the problem, do you need just this?
StringBuilder sb = new StringBuilder();
foreach(var cb in checkBoxes)
{
if(cb.IsChecked)
{
sb.Append(cb.Text);
sb.Append(';');
}
}
6 Comments
John Lechowicz
Good, but you might want to add a line of code in there to trim off the trailing semi-colon.
Jonathan
ArsenMkrt, you beat me for a few seconds. in addition, I we need to produce a string that is not like the name, we can use the Tag attribute of the checkbox to store the string.
Arsen Mkrtchyan
Than you can use Tag, but I think the Text is exactly what he want, in wonforms, and Content.ToString() in wpf, just because I don't know is it wpf project or winform, I used name, I will change it now
Arsen Mkrtchyan
and what is the reason of down voting?
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What I usually do when wanting to concat strings with a given separator, is putting my strings in a string array, then use the String.Join method. Example :
string.Join(";", new string[] { "test1", "test2", "test3" }); // Which outputs test1;test2;test3
Comments
You could use something similar to:
List<CheckBox> boxes;
String result = String.Join(" ; ", boxes.Where(box => box.Checked)
.Select(box => box.Text).ToArray());
Comments
var values = (from c in new[] { c1, c2, c3, c4, c5, c6, c7 }
where c.Checked
select c.Text).ToArray();
var result = string.Join(";", values);
Comments
You didn't specify WinForms versus WPF; I will assume WinForms but code is nearly identical for WPF (replace Checked by IsChecked and Text by Tag). The CheckBox control has a Checked property indicating whether or not the CheckBox is in the checked state. So say that you CheckBoxes are in an array CheckBox[] checkBoxes. Then you could say
List<string> checkedItems = new List<string>();
for(int i = 0; i < checkBoxes.Length; i++) {
CheckBox checkBox = checkBoxes[i];
if(checkBox.Checked) {
checkedItems.Add(checkBox.Text);
}
}
string result = String.Join(" ; ", checkedItems.ToArray());
Of course, that imperative and yucky. Let's get happy with some nice declarative code in LINQ:
string result = String.Join(
" ; ",
checkBoxes.Where(cb => cb.Checked)
.Select(cb => cb.Text)
.ToArray()
);
If your CheckBoxes are not in array, you could start by putting them in array via
CheckBox[] checkBoxes = new[] { c1, c2, c3, c4, c5, c6, c7 };
where c1, c2, ..., c7 are your CheckBoxes.
Comments
