Question

我从数据库中检索图像列表并在flowlayoutpanel中显示。

int i = 1;
            byte[] imgData;
            SqlConnection con = new SqlConnection(localdb);
            con.Open();
            SqlCommand cmd = new SqlCommand("SELECT image FROM Image", con);
            SqlDataReader rdr = cmd.ExecuteReader();

            while (rdr.Read())
            {
                imgData = (byte[])(rdr["image"]);
                using (MemoryStream ms = new MemoryStream(imgData))
                {
                    System.Drawing.Image photo = Image.FromStream(ms);
                    pbName[i] = new PictureBox();
                    pbName[i].Image = photo;
                    pbName[i].SizeMode = PictureBoxSizeMode.CenterImage;
                    pbName[i].Parent = this.flowLayoutPanel1;
                    pbName[i].Click += new EventHandler(butns_Click);
                    i++;
                }
            }

由于图片框是在flowlayoutpanel中自动生成的。任何人都知道如何通过点击图片框找到flowlayoutpanel中的图片框的索引？谢谢。

private void butns_Click(object sender, EventArgs e)
{
   //code
}

Answer 1

您可以从父控件的集合中获取索引注意，索引取决于集合中放置的所有控件。

private void butns_Click(object sender, EventArgs e)
{
    var pictureBox = (PictureBox)sender;
    int index = flowLayoutPanel1.Controls.GetChildIndex(pictureBox);
}

另一种方法是使用Tag属性。

pbName[i].Tag = i; // puts index to tag

private void butns_Click(object sender, EventArgs e)
{
    var pictureBox = (PictureBox)sender;
    int index = (int)pictureBox.Tag;
}

FlowLayoutPanel中的PictureBox的C＃索引

1 个答案: