Question

我有一个用于视频上传的网络应用程序，因为我想在链接中显示视频click.i写了一个函数来显示视频。我想将视频的id传递给函数。我怎么能去做？任何人都可以帮助我吗？

这是我的代码

    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

有很多方法可以为链接设置CommandArgument（或者更确切地说就是代码所示的按钮）。

ASPX：

<ItemTemplate>
    <asp:LinkButton ID="lnkVideo" runat="server" 
              CommandArgument='<%# Eval("VideoID")%>' 
              OnClick="ButtonShowVideo_Click">Watch Video</asp:LinkButton>
</ItemTemplate>

代码： private sub void GetVideos（） '获取视频（S） '创建链接或在网格中获取链接并为其设置命令论据 lnk1.CommandArgument = ID_OF_VIDEO 结束子

现在处理点击：

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

在链接点击上传递id

1 个答案: