使用ASP.Net C＃

Question

我有一个签名板。我将签名板值保存为数据库中的字节数组图像。我已经在图像控件上显示了此图像。我想在Pdf中的数字签名控件上显示相同的图像。 为了在pdf上显示内容，我在项目中使用了类文件。

下面我已附加代码以显示它：

public String Signature
{
    get
    {
        //if employee has not agreed to the Electronic Signature form - do not place signature on form.
        EmployeePortal.Models.NCI.NCIEntities ent = EmployeePortal.Models.ClsNCIUtil.GetNCIEntity(custid);
        using (ent)
        {
            EmployeePortal.Models.NCI.EmployeeSignature empSignature = ent.EmployeeSignatures.OrderByDescending(a => a.SignID).FirstOrDefault(a => a.EmployeeId == employee.EmployeeId);
            EmployeePortal.Models.NCI.EmployeeOnboarding empsign = ent.EmployeeOnboardings.FirstOrDefault(a => a.EmployeeId == employee.EmployeeId);
 
            if (empsign == null)
            {
                return null;
            }
            if (empsign.IAgree == true)
            {
                System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding(); 
                return encoding.GetString(empSignature.SignatureFile);
            }
            else
            {
                return null;
            }
        }
    }       
}

如何在数字签名acrofield上显示图像？