user control properties - asp.net

Question

i have a detail view with below markup and data source of this detail view is from stored procedure "spDocResult" like below:
select DocId,TransId,FileId,Filename,ContentType,Data,DocumentNo,Title,TRANSMITTAL
from DocumentSum2
where (DocId=#Docid)AND(Transid=#Transid)
one field of this detail view should be show Efile Names so i have made 1 user control for that
public partial class FileTemp : System.Web.UI.UserControl
{
private EDMSDataContext _DataContext;
private IEnumerable<tblFile> _Efiles;
public IEnumerable<tblFile> Efiles
{
set { _Efiles = value; }
}
protected void Page_Load(object sender, EventArgs e)
{
}
protected void LinkButton1_Command(object sender, CommandEventArgs e)
{
if (e.CommandName == "Download")
{
_DataContext = new EDMSDataContext();
//you can get your command argument values as follows
string FileId = e.CommandArgument.ToString();
int _FileId = Convert.ToInt32(FileId);
tblFile Efile = (from ef in _DataContext.tblFiles
where ef.FileId == _FileId
select ef).Single();
if (Efile != null)
{
download(Efile);
}}}
private void download ( tblFile Efile)
{
Byte[] bytes = (Byte[])Efile.Data.ToArray();
Response.Clear();
Response.Buffer = true;
Response.Charset = "";
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.ContentType = Efile.ContentType.ToString();
Response.AddHeader("content-disposition", "attachment;filename="
+ Efile.FileName.ToString());
Response.BinaryWrite(bytes);
Response.Flush();
Response.End();
}
public override void DataBind()
{
base.DataBind();
GridViewEfile.DataSource = _Efiles;
GridViewEfile.DataBind();
}
}
now i have problem because datasource of detailview comes from a stored procedure and properties of user control is from tblFile, so when i use DetailsView1_DataBound i do not know how i have to get user control properties.when i use below code, i have error
can not implicity convert type string to system.collection.generic.iEnumerable<tblfile>
i have error for this line
fileList.Efiles = docresult.Filename;
protected void DetailsView1_DataBound(object sender, EventArgs e)
{
spDocResultResult docresult = (spDocResultResult)DetailsView1.DataItem;
FileTemp fileList = (FileTemp)DetailsView1.FindControl("FileTemp1");
fileList.Efiles = docresult.Filename;
fileList.DataBind();
}

Answer 1

This might not be a data binding issue at all. It's a little hard to gather from the context, but...
FileTemp fileList = (FileTemp)DetailsView1.FindControl("FileTemp1");
fileList.Efiles = docresult.Filename;
Is fileList.Efiles a list of items that you just want to assign a file name to? If so, you might just need to foreach through them.
foreach (var file in fileList.Efiles)
{
file.FileName = docresult.Filename;
}
Also, add this line to your Efiles declaration to solve the Get accessor error.
public IEnumerable<tblFile> Efiles
{
get { return _Efiles; } // <- here
set { _Efiles = value; }
}