Try this one in form tag
<form id="form1" enctype="multipart/form-data" method="post" runat="server">
سؤال
when i use image control with updatepanel in asp.net, compiler gives an error : NullReference exception,
please any body help me. so what should be done to avoid such problem?
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<div>
<asp:AsyncFileUpload ID="flduserphoto" runat="server"
OnClientUploadComplete="OnClientAsyncFileUploadComplete"
OnUploadedComplete="OnAsyncFileUploadComplete" Width="374px" />
<asp:Image runat="server" ID="imgPhoto" Width="150px" />
</div>
</ContentTemplate>
</UpdatePanel>
code file is,
public partial class Registration_frmUserRegistration : System.Web.UI.Page
{
DataTable dt;
#region FileUploadControl Section
protected void OnAsyncFileUploadComplete(object sender, AsyncFileUploadEventArgs e)
{
if (flduserphoto.FileBytes != null)
{
lblgender.Text = "asdf";
Context.Session.Add("SessionImage", flduserphoto.FileBytes);
}
}
#endregion
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnSave_Click(object sender, EventArgs e)
{
BALUserAddress objUserAddress = new BALUserAddress();
objUserAddress.UserType = ddlusertype.Text;
byte[]imageByte = new byte[flduserphoto.PostedFile.ContentLength];
objUserAddress.ProfilePicture=imageByte;
objUserAddress.ParentID = "0";
objUserAddress.RelationWith="Self";
objUserAddress.RegistrationDateTime= DateTime.Now;
string msg = objUserAddress.SaveUserDetails();
lblMsg.Text=msg;
mpMsg.Show();
}
}
this is my code file please check it
المحلول
Try this one in form tag
<form id="form1" enctype="multipart/form-data" method="post" runat="server">