pass the id on a link click - asp.net

Question

i have a web application for video uploading,In that i want to show the video in the link click.i wrote a function for to show the video.i want to pass the id of video into the function .How can i Do that?
Can any one help Me?
This is my code
Private Function
GetSpecificVideo(ByVal i As Object) As
DataTable
'pass the id of the video
Dim connectionString As String =
ConfigurationManager.ConnectionStrings("UploadConnectionString")
.ConnectionString
Dim adapter As New SqlDataAdapter("SELECT FileName,
FileID,FilePath " + "FROM FileM WHERE
FileID = #FileID", connectionString)
adapter.SelectCommand.Parameters.Add("#FileID",
SqlDbType.Int).Value = DirectCast(i, Integer)
Dim table As New DataTable()
adapter.Fill(table)
Return table
End Function
Protected Sub ButtonShowVideo_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles ButtonShowVideo.Click
Repeater1.DataSource = GetSpecificVideo(****here i want to get the ID****)
'the video id (2 is example)
Repeater1.DataBind()
End Sub

Answer 1

of the many ways one is to set CommandArgument for the link (or rather button as your code seems).
ASPX:
<ItemTemplate>
<asp:LinkButton ID="lnkVideo" runat="server"
CommandArgument='<%# Eval("VideoID")%>'
OnClick="ButtonShowVideo_Click">Watch Video</asp:LinkButton>
</ItemTemplate>
Code:
private sub void GetVideos()
'GET VIDEO(S)
'CREATE LINKS OR IF IN GRID GET LINKS AND SET COMMAND ARGUMENT FOR IT
lnk1.CommandArgument = ID_OF_VIDEO
end sub
now handle click:
Protected Sub ButtonShowVideo_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles ButtonShowVideo.Click
var btn = sender as Button 'or Link or LinkButton
if(btn is not null) then
if(NOT string.IsNullOrEmpty(btn.CommandArgument)) then
var vid = Convert.ToInt32(btn.CommandArgument)
Repeater1.DataSource = GetSpecificVideo(vid)
Repeater1.DataBind()
end if
end if
End Sub