Image not showing in listview in c#

问题

I am working on Winforms where I am saving path of image in database, and then retrieving the path and giving it to Imagelist. The images from Image list are used in ImageView. But the image is not displaying, its path is correctly displayed but image is not showing.

public void yourvideos(string user, ImageList imageList, ListView lv, Label l,TextBox s)
        {
            cmd = new SqlCommand("select Title,Thumbnail from RecipeInfo where Username=@username", con);
            cmd.Parameters.AddWithValue("@username", user);
            con.Open();
            SqlDataReader reader = cmd.ExecuteReader();
            if (reader.HasRows)
            {
                int count = 0;
                while (reader.Read())
                {
                    s.Text = reader[1].ToString();
                    imageList.ImageSize = new Size(100, 100);
                    imageList.Images.Add("key"+count,Image.FromFile($@"{reader[1]}"));
                   
                    var listviewitem = lv.Items.Add(reader[0].ToString(), count);
                    
                    listviewitem.ImageKey = "key" + count;
                  count++;
                }
                

                
            }
            else
            {

                l.Visible = true;
                l.Text = "Upload videos and share your recipes with others";
            }
            reader.Close();
            con.Close();
        }

回答1:

This problem also occurred when I used the key, and I solved it with the Index.
You can refer to my code：

public Form1()
    {
        InitializeComponent();                
        this.listView1.View = View.LargeIcon;
       yourvideos(this.imageList1,this.listView1);
    }
    public void yourvideos( ImageList imageList1, ListView listView1)
    {
        string sql = "...";
        SqlConnection con = new SqlConnection(sql);
        SqlCommand cmd = new SqlCommand("select Title,Thumbnail from RecipeInfo", con);
        con.Open();
        SqlDataReader reader = cmd.ExecuteReader();
        int i = 0;
        if (reader.HasRows)
        {
            while (reader.Read())
            {
                string title = reader["Title"].ToString();
                string picurl = reader["Thumbnail"].ToString();
                imageList1.ImageSize = new Size(60, 60);
                imageList1.Images.Add(Image.FromFile(picurl));
                ListViewItem item = new ListViewItem();
                item.Text = Convert.ToString(title);
                listView1.Items.Add(item);
                item.ImageIndex = i;
                i++;

            }
        }
        listView1.LargeImageList = imageList1;
        reader.Close();
        con.Close();

    }
       

Result:

来源：https://stackoverflow.com/questions/63703741/image-not-showing-in-listview-in-c-sharp