如何在asp.net中动态加载图像控件中的图像

Question

我有一个图像控件。单击修改按钮后，图像未加载到图像控件。图像已成功保存，但无法加载。图像保存在文件夹中。我写了以下代码。

 string subs = dTable.Rows[0]["Logo"].ToString();
                    foreach (var file in filePaths)
                    {
                        string sFileName = Path.GetFileName(file);
                        if (sFileName == subs)
                        {
                            img.ImageUrl = file;
                        }
                    }

Answer 1

尝试在容器中添加img控件，如样本面板：

if (sFileName == subs)
{
   System.Web.UI.WebControls.Image img = new System.Web.UI.WebControls.Image();
   img.ImageUrl = file;

   pnl.Controls.Add(img);
}

在您的asp.net页面中：

<asp:Panel ID="pnl" runat="server"></asp:Panel>

Answer 2

SqlConnection Ocon = new SqlConnection(WebConfigurationManager.ConnectionStrings["TestDBConnectionString"].ConnectionString);
string sqlQyery = "Select *from StoreFile where ItemId=1";
try
{
    SqlDataAdapter da = new SqlDataAdapter(sqlQyery, Ocon);
    DataTable dtimage = new DataTable();
    da.Fill(dtimage);
    if (dtimage.Rows.Count > 0)
    {
        foreach (DataRow dr in dtimage.Rows)
        {
            Image img1 = new Image();
            // Images Path
            img1.ImageUrl = "~/MyFiles/" + dr["ItemId"].ToString() + "/" + 
            dr["FileName"].ToString();                    
            pnlImages.Controls.Add(img1);

        }
    }
}
catch (Exception ex)
{ }