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for (int i = 0; i < listBox1.SelectedIndices.Count; i++)
{
int sindex = listBox1.SelectedIndices[i]; //sindex就是你需要的所选中的行号
}
for (int i = 0; i < lbname.Items.Count; i++)
{
if(lbname.Items[i].Selected)
{
//选中处理
}
}
ArrayList al;
for(int i=0;i<ListBox1.Items.Count;i++)
{
if(ListBox1.Items[i].Selected)
{
al.Add(i);
}
}