当ListView多选时返回第一次选中的项索引

正确

定义一个变量 

=-1 表示第一次没选任何一项

  private int FirstSelectedIndex =-1;

 

 

更新FirstSelectedIndex 的值一定要放在Mouse_Click

放在 listView1_SelectedIndexChanged或listView1_ItemSelectionChanged无效

  

 

private void listView1_MouseClick(object sender, MouseEventArgs e)

        {

            int count = listView1.SelectedItems.Count;

            if (count > 0)

            {

                int Index = listView1.SelectedItems[0].Index;

                if (count == 1)

                    FirstSelectedIndex = Index;

            }

        }

       

高亮选中第一次选择的项

Form1_Click

  

private void Form1_Click(object sender, EventArgs e)

        {

            if (listView1.Items.Count > 0)

            {

                if (FirstSelectedIndex != -1)

                {

                    //RUN

                    listView1.MultiSelect = false;

                    listView1.Focus();

                    Text = listView1.Items[FirstSelectedIndex].Text;

                    listView1.Items[FirstSelectedIndex].Selected = true;

                    listView1.MultiSelect = true;

                }

                if ((FirstSelectedIndex == -1) && (listView1.SelectedItems.Count > 0))

                {

                    //RUN

                    FirstSelectedIndex = 0;

                    listView1.MultiSelect = false;

                    listView1.Focus();

                    Text = listView1.Items[FirstSelectedIndex].Text;

                    listView1.Items[FirstSelectedIndex].Selected = true;

                    listView1.MultiSelect = true;

                }

            }

        }