Recent days I got a project with requirement to play flv video, so I found an free for non commecrial purposes flv player, but the problem that I had was how to find way to "control" what the player is going to play by the users' choise. So what I needed was to "inject" this javascript embedded player dynamically into pages' html, that way I got the power to control what is going to be passed to and played by the player (I've used url query string to pass videos' file name to the player as parameter). So here how I did it:

What I did in aspx file was to put holder for the javascript player code:

<asp:PlaceHolder ID="PlaceHolder1" runat="server" />

Then I used HtmlGenericControl to "inject" the javascript player code into holder:

Dim Span As New HtmlControls.HtmlGenericControl("span")

Span.Attributes.Add("style", "z-index: 80")
Span.InnerHtml = "<a id=""container"" href=""http://www.macromedia.com/go/getflashplayer""></a>" & _
"<script type=""text/javascript"" src=""swfobject.js""></script>" & _
"<script type=""text/javascript"">" & _
"var s = new SWFObject(""mediaplayer.swf"",""mediaplayer"",""" & "400" & """,""" & "300" & """,""" & "8" & """);" & _
"s.addParam(""allowfullscreen"",""true"");" & _
"s.addVariable(""width"",""" & "400" & """);" & _
"s.addVariable(""height"",""" & "300" & """);" & _
"s.addVariable(""file"",""" & "" & Request.QueryString("filename") & ".flv" & """);" & _
"s.addVariable(""image"",""" & "" & """);" & _
"s.addParam(""wmode"", ""transparent"");" & _
"s.write(""container"");" & _
"</script>"

PlaceHolder1.Controls.Add(Span)

Ok, I was sitting infront of the computer screen and was thinking what to write so i decide to give you a clue how to use file upload control. Enough talking time for coding :)

- In our aspx file

<asp:FileUpload ID="FileUpload1" runat="server />

<asp:Button ID="Button1" runat="server Text="Upload File" />

- In our code behind aspx.vb file (by the way I am using VB)

Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click

FileUpload1.SaveAs("C:\") ' if you point to a server path don't forget to set write permission for internet guest account

End Sub

So thats it if you have future questions please ask