Passing XML to Stored Procedure in SQL Server - asp.net

Question

I am passing xml to a stored procedure and it is compiling but no row inserted into the database.
My code
foreach (int item in objDirectory.PhotoId)
{
//roots = roots + "<row DirectoryId='"+objDirectory.DirectoryId+"'PhotoId='" +item+"'CreatedBy='"+"Admin"+"'ModifiedBy='"+"Admin"+"'/>";
roots = roots + "<row DirectoryId= '" + objDirectory.DirectoryId + "' PhotoId='" + item + "' CreatedBy ='" + "Admin" + "' ModifiedBy ='" + "Admin" + "'/>";
}
PhotoIds = string.Format(PhotoIds, roots);
objDirectory.SavePhotoId(PhotoIds);
Save Method
public void SavePhotoId(string PhotoId)
{
SqlTransaction tran = null;
try
{
SqlParameter[] arParams = new SqlParameter[3];
m_objConn = new SqlConnection(m_strConn);
m_objConn.Open();
tran = m_objConn.BeginTransaction();
arParams[0] = new SqlParameter("#PhotoID", PhotoId);
SqlHelper.ExecuteNonQuery(tran, CommandType.StoredProcedure, "InsertUpdatePhotIdInAlbum", arParams);
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (m_objConn.State == ConnectionState.Open)
{
m_objConn.Close();
m_objConn = null;
}
}
}
Stored procedure:
CREATE Procedure [dbo].[InsertUpdatePhotIdInAlbum]
#PhotoID xml=null
As
Begin
set nocount on;
if #PhotoID IS NULL
Begin
Return;
End
Declare #PhotoAlbumDetail TABLE (AlbumID int, PhotoId int, CreatedBy varchar(50),
ModifiedBy varchar(50))
insert into #PhotoAlbumDetail(AlbumID, PhotoID, CreatedBy, ModifiedBy)
select
t.c.value('./#DirectoryId', 'int') as AlbumID,
t.c.value('./#PhotoId', 'int') as PhotoID,
t.c.value('./#CreatedBy', 'varchar(50)') as CreatedBy,
t.c.value('./#ModifiedBy', 'varchar(50)') as ModifiedBy
from
#PhotoID.nodes('/root/row') t(c);
INSERT INTO [dbo].[tbl_PhotoAlbumDetail](AlbumID, PhotoId, CreatedBy, ModifiedBy)
SELECT
p.AlbumID, p.PhotoId, p.CreatedBy, p.ModifiedBy
FROM
#PhotoAlbumDetail p
End