Question

.net web页面中的listbox，怎么可以选中多个Items

Answer 1

设置ListBox SelectionMode="Multiple"

protected void btnDisplay_Click ( object sender, EventArgs e )
{
string selectedValues = "";
foreach ( ListItem item in this.ListBox1.Items )
{
if ( item.Selected )
{
selectedValues += item.Value;
}
}

this.TextBox1.Text = selectedValues;
}