如何在ASP.NET MVC中使用jQuery将varbinary图像显示到html表？

Question

I am trying to display a varbinary image from a SQL table to html table data using jQuery and web service. Please help me how to convert int and how to display it.

My code is like this:

Web service:

[WebMethod]
public a[] Bindpics()
{
    DataTable dt = ga.retrievedata("select Picture from T_Sam");

    List<a> details = new List<a>();

    foreach (DataRow dtrow in dt.Rows)
    {
        a m = new a();
        m.Pic = (byte[])dtrow["Picture"];
        details.Add(m);
    }

    return details.ToArray();
}

public class a
{
   public byte[] Pic { get; set; }
}

jQuery:

success: function (data) {
        for (var i = 0; i < data.d.length; i++) {
            $("#tbDetails").append("<tr><td>"
                + "<img src=" + "'" + data.d[i].Pic + "'" + " />" + "</td></tr>");
        }

I am getting an error

Unable to cast object of type \'System.DBNull\' to type \'System.Byte[]\'

It is not displaying the image.

Please help me to convert it.

Answer 1

我从Web服务转换了图像，然后问题解决了...