如何得到listbox所有选择项(多选)的索引号?

Question

for(int i=0;i<this.listBox1.SelectedIndices.Count;i++)
{
MessageBox.Show(this.listBox1.Items[this.listBox1.SelectedIndices[i]].Text);
}

Answer 1

用listBox1.SelectedItems来做,如下:for (int i=0; i<this.listBox1.SelectedItems.Count; i++)
{
System.Console.WriteLine(this.listBox1.SelectedItems[i]);
}

Answer 2

或这样用:
foreach ( int i in this.listBox1.SelectedIndices)
{
System.Console.WriteLine(this.listBox1.Items[i]);
}

Answer 3

for(int i = 0; i < this.listBox1.SelectedItems.Count ; i++)
  MessageBox.Show(this.listBox1.SelectedItems[i].ToString());

Answer 4

按楼主的想法,我想这是最全适的啊,就用SelectedIndices来做,用foreach最简洁:foreach ( int i in this.listBox1.SelectedIndices)
{
System.Console.WriteLine(this.listBox1.Items[i]);
}

Answer 5

你要的应该是这个方法吧：
有英文耐心读一下
// Display a list of selected indices.
// The SelectedIndices property returns a SelectedIndexCollection
// object. Use its CopyTo method to copy the items to 
// an array, so you can bind the list to a ListBox control.
int[] aIndices = new int[lstMultiSelect.SelectedIndices.Count];//lstMultiSelect为listbox
lstMultiSelect.SelectedIndices.CopyTo(aIndices, 0);
lstSelected.DataSource = aIndices;//lstSelected要显示的listbox