Limiting the maximum text length of a ListViewItem?
I have a ListView in a win-form project in C #. Is it possible to limit the maximum length of the title of an entire ListViewItem inside the ListView?
UPDATE
I mean the input length, I am setting the element to editable so users can rename the elements
UPDATE2
That's right, he named the "text" of this element, not the title.
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You can use the label after the edit event in the list. Here's an example.
private void listview1_AfterLabelEdit(object sender, LabelEditEventArgs e)
{
try
{
const int maxPermittedLength = 1;
if (e.Label.Length > maxPermittedLength)
{
//trim text
listview1.Items[e.Item].SubItems[0].Text = listview1.Items[e.Item].SubItems[0].Text.Substring(0, maxPermittedLength); //or something similar
//or
//show a warning message
//or
e.CancelEdit = true; //cancel the edit
}
}
catch (Exception ex)
{
}
}
Remember, this is difficult, not easy, you will have to take care of a few exceptions, but this is homework. The above code is not working code, but now you have an idea how to do it. Read the documentation well, it has a good example and warning related to this event.
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What does the name ListViewItem mean? is this the text of the subject you mean? I believe that anything recoverable is fixable and controllable. If it is the text of an element, you can write a validation method
public string SimplifyTxt(string input)
{
if(input.Length>LIMIT_NUMBER)
{
//please shorten the string before display
}
return retStr;
}
and then it can be assigned as
listview1.items.add(new Listviewitem{Text=retVal});
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