foreach (ListItem li in chkBoxList.Items) { if(li.Selected==true){ li.Selected=false; } }
checkedListBox1.Items.Add("value1", CheckState.Unchecked);
foreach(int i in checkedListBox1.CheckedIndices) { checkedListBox1.SetItemCheckState(i, CheckState.Unchecked); }
chkitem.ClearSelected();
chkitem.SetItemChecked(index, false);
foreach (int index in chkitem.CheckedIndices) { chkitem.SetItemChecked(index, false); }
var
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