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[CLOSED] Treepanel / leaf click / download file

  1. #1
    May 01, 2014, 8:32 AM

    [CLOSED] Treepanel / leaf click / download file

    Hi

    I am having some trouble downloading a file on a click on a treepanel leaf.

    What I have so far is the listener on the panel
    <Listeners>
                <ItemClick Handler="if (record.data.leaf) { App.direct.onDownload({buffer:300, isUpload:true, method:GET}); }"></ItemClick>
            </Listeners>
    do I need this formProxyArg? And if yes, what if I have a treepanel instead of a form?

    and the direct method
    [DirectMethod]
    public void onDownload()
    {
        Response.Clear();
        Response.ContentType = "application/octet-stream";

        //Response.ContentEncoding = System.Text.Encoding.Default;
        Response.AddHeader("content-disposition", "filename=" + "test.pdf");
        Response.TransmitFile(@"c:\\temp\test.pdf");
        Response.End();
    }
    Thank you very much for your insight.
    Last edited by Daniil; May 13, 2014 at 4:16 PM. Reason: [CLOSED]
  2. #2
    May 01, 2014, 9:36 PM
    Hi @tMp,

    Yes, it needs to set up 
    formProxyArg: "form1"
    <form id="form1" style="display: none;"></form>
  3. #3
    May 02, 2014, 6:38 AM
    @Daniil

    Thanks, unfortunately I am still fighting. Somehow I am missing something:

    <%@ Page Language="C#" %>
 
 
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>
 
<script runat="server">
 
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!X.IsAjaxRequest)
        {
            try
            {

            }
            catch (Exception err)
            {
                throw err;
            }
        }
    }

    // load new node data
    protected void NodeLoad_ReadData(object sender, NodeLoadEventArgs e)
    {
        try
        {
            if (!string.IsNullOrEmpty(e.NodeID))
            {
                string parentDirectory = e.NodeID;
                foreach (var directory in System.IO.Directory.GetDirectories(parentDirectory))
                {
                    string directoryname = System.IO.Path.GetFileName(directory);
                    Node asyncNode = new Node();
                    asyncNode.Text = directoryname;
                    asyncNode.NodeID = directory.ToString();
                    e.Nodes.Add(asyncNode);
                }

                foreach (var file in System.IO.Directory.GetFiles(parentDirectory))
                {
                    string filename = System.IO.Path.GetFileName(file);
                    Node treeNode = new Node();
                    treeNode.Text = filename;
                    treeNode.NodeID = file.ToString();
                    treeNode.Leaf = true;
                    e.Nodes.Add(treeNode);
                }
            }
        }
        catch (Exception err)
        {
            string errMessage = err.Message;
            X.Msg.Alert("Fehlermeldung", "File: downloads.aspx.cs<br>Function: NodeLoad_ReadData<br>Message: " + errMessage).Show();
        }
    }

    // file download
    [DirectMethod]
    public void onDownload()
    {
        Response.Clear();

        Response.ContentType = "application/octet-stream";

        //Please rename test file in c:\temp accordingly
        string testFile = "mr.m";
        Response.AddHeader("content-disposition", "filename=" + testFile);
        Response.TransmitFile(@"c:\\temp\" + testFile);
        Response.End();
    }
 
</script>
 
<!DOCTYPE html>
 
<html>
<head id="Head" runat="server">
    <title></title>
 
</head>
<body>
    <form id="Form" runat="server">
        <ext:ResourceManager ID="ResourceManager1" runat="server" Locale="de-CH" />
 
        <ext:TreePanel runat="server" ID="TP_DOWNLOADS" Title="Dokument-Vorlagen" Height="700">
            <Store>
                <ext:TreeStore ID="TreeStore" runat="server" OnReadData="NodeLoad_ReadData">
                    <Proxy>
                        <ext:PageProxy></ext:PageProxy>
                    </Proxy>
                </ext:TreeStore>
            </Store>
            <Root>
                <ext:Node NodeID="\\localhost\temp" Text="temp"></ext:Node>
            </Root>
            <Listeners>
                <ItemClick Handler="if (record.data.leaf) { App.direct.onDownload({buffer:300, isUpload:true, method:GET, formProxyArg:'hiddenForm'}); }"></ItemClick>
            </Listeners>
        </ext:TreePanel>
        <ext:FormPanel runat="server" ID="hiddenForm" StyleSpec="display:none;"></ext:FormPanel>
    </form>
</body>
</html>
    When I try it with an empty App.direct.onDownload() the onDownload gets called but no file download. As soon as I but the {}-stuff in not even the onDownload gets called. Or is there a better way to download the file a user click on?

    Thank you very much.
  4. #4
    May 02, 2014, 6:01 PM
    Currently, there is a JavaScript error: "GET is not defined". You should define it as a string.
    method: 'GET'
    Also you don't need this
    <ext:FormPanel runat="server" ID="hiddenForm" StyleSpec="display:none;"></ext:FormPanel>
    as you already have 
    <form id="Form" runat="server">
    So:
    formProxyArg:'Form'
  5. #5
    May 02, 2014, 6:58 PM
    Btw, this setting doesn't make sense:
    method: 'GET'
    because POST will be forced, it is required for download.

    Also please use:
    formId:'Form'
    instead of
    formProxyArg:'Form'
    I forgot that it has been renamed.
  6. #6
    May 02, 2014, 7:18 PM
    Hi Daniil,

    thank you very much. It seems to work. I really have to take a look at javascript debugging :(

    I omitted the "method" now entirely. What about the buffer? Is it nescessary? Why excatly 300? Can I read somewhere what this kind of config stuff is and what I can/must/shouldn't use?

    best regards.
  7. #7
    May 05, 2014, 4:50 AM
    Quote Originally Posted by tMp View Post
    I omitted the "method" now entirely. What about the buffer? Is it nescessary? Why excatly 300?

    Quote Originally Posted by tMp View Post
    Can I read somewhere what this kind of config stuff is and what I can/must/shouldn't use?
    See #6:
    https://examples2.ext.net/#/Events/D...hods/Overview/

    It explains the config options you can use. You decide you should/must use it or not:) I don't think there is a doc article more about that.
  8. #8
    May 06, 2014, 1:08 PM
    Nice! Pefect. Thank you. Don't know why I have never seen that part... ;)

    PS: Haven't found the buffer option yet... I must be blind... but I am still looking for it.
    Last edited by tMp; May 06, 2014 at 1:13 PM.
  9. #9
    May 06, 2014, 1:49 PM
    Quote Originally Posted by tMp View Post
    PS: Haven't found the buffer option yet... I must be blind... but I am still looking for it.
    Hmm, I guess there is no a buffer option for a DirectMethod...

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