How to loop thru a checkboxlist and to find what's checked and not checked

问题

i'm trying to loop thru items of a checkbox list. if it's checked, I want to set 1 value. If not, I want to set another value. I was using the below but it only gives me checked items:

foreach (DataRowView myRow in clbIncludes.CheckedItems)
{
    MarkVehicle(myRow);
}

TIA!

回答1:

for (int i = 0; i < clbIncludes.Items.Count; i++)
  if (clbIncludes.GetItemChecked(i))
    // Do selected stuff
  else
    // Do unselected stuff

If the the check is in indeterminate state, this will still return true. You may want to replace

if (clbIncludes.GetItemChecked(i))

with

if (clbIncludes.GetItemCheckState(i) == CheckState.Checked)

if you want to only include actually checked items.

回答2:

This will give a list of selected

List<ListItem> items =  checkboxlist.Items.Cast<ListItem>().Where(n => n.Selected).ToList();

This will give a list of the selected boxes' values (change Value for Text if that is wanted):

var values =  checkboxlist.Items.Cast<ListItem>().Where(n => n.Selected).Select(n => n.Value ).ToList()

回答3:

Try something like this:

foreach (ListItem listItem in clbIncludes.Items)
{
    if (listItem.Selected) { 
        //do some work 
    }
    else { 
        //do something else 
    }
}

回答4:

I think the best way to do this is to use CheckedItems:

 foreach (DataRowView objDataRowView in CheckBoxList.CheckedItems)
 {
     // use objDataRowView as you wish                
 }

回答5:

check it useing loop for each index in comboxlist.Items[i]

bool CheckedOrUnchecked= comboxlist.CheckedItems.Contains(comboxlist.Items[0]);

I think it solve your purpose

回答6:

Use the CheckBoxList's GetItemChecked or GetItemCheckState method to find out whether an item is checked or not by its index.

来源：https://stackoverflow.com/questions/395454/how-to-loop-thru-a-checkboxlist-and-to-find-whats-checked-and-not-checked

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.net

checkboxlist