[CLOSED] BADRESPONSE downloading a file

[vadym.f]

Hi,

I have a direct method that writes bytes to Response OutputStream called on a hyperlink click JS event. The hyperlink is created from a text value of the GridPanel cell in a Renderer function. I'm getting a popup with

BADRESPONSE: Invalid character

.

I believe the workaround for the button doing the same was to set

IsUpload="true"

in the markup. What do I have to do to make the hyperlink scenario work?

Thanks,

Vadym

[geoffrey.mcgill]

Hi,

I have a direct method that writes bytes to Response OutputStream called on a hyperlink click JS event. The hyperlink is created from a text value of the GridPanel cell in a Renderer function. I'm getting a popup with

BADRESPONSE: Invalid character

.

I believe the workaround for the button doing the same was to set

IsUpload="true"

in the markup. What do I have to do to make the hyperlink scenario work?

Thanks,

Vadym

Please post a full (but simplified) .aspx code sample demonstrating the scenario and how you have all these parts configured. Please reduce the minimum required to reproduce the issue (typically <100 lines).

[Daniil]

Hi,

Please look at the Ext.Net.DirectResponse sources, how IsUpload is used.

Return method

public virtual void Return()
{
    if (!this.IsUpload && !this.NativeUpload)
    {
        CompressionUtils.GZipAndSend(this);
    }
    else
    {
        HttpContext.Current.Response.ContentType = "text/html";
        HttpContext.Current.Response.Write(this.ToString());
    }
}

ToString method

public override string ToString()
{
    if (this.Script.IsNotEmpty() && !this.Script.StartsWith("<string>"))
    {
        this.Script = "<string>" + this.Script;
    }

    string serialize = new ClientConfig().Serialize(this);

    if (!this.internalUsing && (this.IsUpload || this.NativeUpload))
    {
        serialize = "<textarea>{0}</textarea>".FormatWith(serialize);
    }

    if (!this.internalUsing && HttpContext.Current != null && HttpContext.Current.CurrentHandler is Page)
    {
        HttpContext.Current.Items["Ext.Net.Direct.Response.Manual"] = true;

        return "<Ext.Net.Direct.Response.Manual>".ConcatWith(serialize, "</Ext.Net.Direct.Response.Manual>");
    }

    return serialize;
}

I think you should implement these parts in your code.

HttpContext.Current.Response.ContentType = "text/html";
HttpContext.Current.Response.Write(this.ToString());

and

serialize = "<textarea>{0}</textarea>".FormatWith(serialize);

[vadym.f]

Thanks for your responses! The initial code sample is in http://forums.ext.net/showthread.php...-on-the-client.

I figured out how to achieve the objective as follows (please advise if there's a better way):

        
var linkRenderer = function (value, metadata, record) {
    value = String.format('<a href="javascript:void();" onClick="Ext.net.DirectMethods.ViewDocument(getRecord(), {isUpload: true});" target="_top">{0}</a>', value);
    return value;
 };

var getRecord = function () {
     var record = GridPanel1.getSelectionModel().getSelected();
     return record.get("Id");
}

        <ext:GridPanel ID="GridPanel1" runat="server" AutoHeight="true">
            <Store>
                <ext:Store ID="Store1" runat="server">
                    <Reader>
                        <ext:JsonReader>
                            <Fields>
                                <ext:RecordField Name="Id" />
                                <ext:RecordField Name="DocName" />
                            </Fields>
                        </ext:JsonReader>
                    </Reader>
                </ext:Store>
            </Store>
            <ColumnModel runat="server">
                <Columns>
                    <ext:Column ColumnID="Id" Header="Id" DataIndex="Id" Hidden="true" />
                    <ext:Column ColumnID="DocName" Header="Document" DataIndex="DocName">
                        <Renderer Fn="linkRenderer" />
                    </ext:Column>
                </Columns>
            </ColumnModel>
        </ext:GridPanel>

        [DirectMethod]
        public void ViewDocument(int documentId)
        {
            byte[] docData = GetDocumentData();   // Getting a byte array
            string docName="Test.docx";

            HttpContext.Current.Response.Clear();
            HttpContext.Current.Response.ClearHeaders();
            HttpContext.Current.Response.ClearContent();
            HttpContext.Current.Response.Buffer = true;

            HttpContext.Current.Response.ContentType = "application/msword";
            HttpContext.Current.Response.AddHeader("Accept-Ranges", "bytes");
            HttpContext.Current.Response.AddHeader("Content-Disposition", String.Format("attachment; filename={0}", docName));
            HttpContext.Current.Response.AddHeader("Content-Length", docData.Length.ToString());

            HttpContext.Current.Response.OutputStream.Write(docData, 0, docData.Length);

            HttpContext.Current.Response.Flush();
            HttpContext.Current.Response.End();
        }

Thanks,

Vadym

[Daniil]

I misunderstood a bit your initial post.

Yes, you just need to set up

isUpload : true

for the DirectMethod config.

Also, please note, that file downloading requires any <form> HTML element on the page.

[vadym.f]

Thanks Daniil,

It's working for me as expected.

Vadym