In C#, I want to assign all 10 Checklistboxes on my page with a value (e.g. 1). What is the syntax so that I can use a variable? I.e. checklistbox(i).selectedIndex = 1;
for (int i = 1; i < 11; i++)
{
checklistbox1.selectedIndex = 1;
checklistbox2.selectedIndex = 1;
checklistbox3.selectedIndex = 1;
...
checklistbox10.selectedIndex = 1;
}
I guess you should use "FindControl" method inorder to do that as shown below.
for (int i = 1; i <= 10; i++)
{
(Page.FindControl("checklistbox" + i) as CheckBox).SelectedIndex = 1;
}
"checklistbox" is assumed as "ID" that is prefixed for all the checkboxes.
Hope this helps!!
You can loop over all the controls on the page and pick out the ones you need as described in this blog post by Kris Steele:
foreach (Control masterControl in Page.Controls)
{
if (masterControl is MasterPage)
{
foreach (Control formControl in masterControl.Controls)
{
if (formControl is System.Web.UI.HtmlControls.HtmlForm)
{
foreach (Control contentControl in formControl.Controls)
{
if (contentControl is ContentPlaceHolder)
{
foreach (Control childControl in contentControl.Controls)
{
if(childControl is CheckBoxList)
{
((CheckBoxList)childControl).SelectedIndex = 1;
}
}
}
}
}
}
}
}
This may not be a good idea if you have a lot of controls on the page.
You should create a List<CheckBoxList>:
var cbs = new List<CheckBoxList> { thingy, otherThingy, ... };
foreach (var cb in cbs)
cb.SelectedIndex = 0;
