c# - 如何转换二进制图像并在 Repeater 中显示？

Question

protected void rptProducts1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{                      
    Image img = (Image)e.Item.FindControl("imgProduct");
    if (img != null)
    {
        var Binary = img.ImageUrl;
        img.ImageUrl = "data:image/png;base64," + (lstProductModel.Select(v => v.Picture = "" + Convert.ToBase64String(v.PictureBinary)));
    }
}

错误是当我尝试将二进制图像格式转换为 base64string 时图像未显示。所以请帮我解决这个问题。谢谢和问候。

Answer 1

从sql server数据库中读取/检索以二进制形式存储的图像并显示在Repeater数据控件中

bytes = (byte[])dt.Rows[i]["BookPic"];
                        base64String = Convert.ToBase64String(bytes, 0, bytes.Length);

                        Image img = (Image)rptBooks.Controls[i].FindControl("ImgBookPic");
                        img.ImageUrl = "data:image/png;base64," + base64String;

点击http://www.webcodeexpert.com/2014/04/upload-and-save-image-in-binary-format.html