FlowLayoutPanel中PictureBox的C＃索引

Question

我從數據庫中檢索圖像列表並在flowlayoutpanel中顯示。

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++; 
       } 
      } 

由於picturebox是在flowlayoutpanel中自動生成的。任何人都知道如何通過點擊圖片框來找到flowlayoutpanel中picturebox的索引？謝謝。

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

Answer 1

您可以從父控件的集合中獲取索引。
要小心，索引取決於放置在集合中的所有控件。

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

另一種方法是使用Tag屬性。

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

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