Set checked items in checkedlistbox from list or dataset

元气小坏坏 提交于 2019-12-10 15:14:55

问题


I have a CheckedListBox and I would like to check all the items that are in another List. This code does not work since the CheckedItems property is read-only and the types do not match, but it gives the best idea of what I want to do.

    checkedListBox1.DataSource = DataSetSelectAll().Tables[0];
    checkedListBox1.ValueMember = "id_table";
    checkedListBox1.DisplayMember = "name";

    List<tableClass> list = MyCheckedList();
    checkedListBox1.CheckedItems = list;

I know this is wrong but do not know how to explain it better.


回答1:


Its not possible to set(check) many items at a time like this, checkedListBox1.CheckedItems = list;

better you can use for loop like:

List<tableClass> list = MyCheckedList();
for (int count = 0; count < checkedListBox1.Items.Count; count++)
{
  if (list.Contains(checkedListBox1.Items[count].ToString()))
  {
    checkedListBox1.SetItemChecked(count, true);
  }
}



回答2:


andy's answer is right but I have an easier solution. My solution works in windows application.

DataTable dt = MyCheckedList();
foreach (DataRow dr in dt.Rows)
{
      for (int i = 0; i < checkedListBox1.Items.Count; i++)
       {
          if (dr["valueMember"].ToString() == ((DataRowView)checkedListBox1.Items[i])[0].ToString())
            {
                checkedListBox1.SetItemChecked(i, true);
            }
       }
}

Note: dt must fill with a dataTable which has all checkedList Values.



来源:https://stackoverflow.com/questions/13205105/set-checked-items-in-checkedlistbox-from-list-or-dataset

易学教程内所有资源均来自网络或用户发布的内容,如有违反法律规定的内容欢迎反馈
该文章没有解决你所遇到的问题?点击提问,说说你的问题,让更多的人一起探讨吧!