Display Files from SQL Server Database in GridView with Download Option

For saving you need to follow the same procedure as

http://www.aspforums.net/Threads/270629/Upload-and-Download-files-SQL-Server-Database-ASPNet/Answered#repliesAnswers

for displaying in GridView you need can use the following sample

GridView

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns = "false">      
	<Columns>          
		<asp:BoundField DataField = "Name" HeaderText = "Name" />          
		<asp:TemplateField>          
		<ItemTemplate>              
		<asp:LinkButton ID="lnkDownload" OnClick = "DownloadFile" runat="server" Text = "Download" CommandArgument = '<%# Eval("Id") %>'></asp:LinkButton>          
		</ItemTemplate>          
		</asp:TemplateField>      
	</Columns>      
</asp:GridView>

Now Fire the following query and bind the GridView

select Id, Name from tblFiles

Then add the following event to Download the file

protected void DownloadFile(object sender, EvenArgs e)  {  
	string strQuery = "select Name, ContentType, Data from tblFiles where id=@id";  
	SqlCommand cmd = new SqlCommand(strQuery);  cmd.Parameters.Add("@id", SqlDbType.Int).Value = (sender as LinkButton).CommandArgument;  
	DataTable dt = GetData(cmd);  
	if (dt != null)  
	{      download(dt);  
	}   
 }

 And for more details refer Display Files saved in Database Table in ASP.Net GridView with Download button