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Thumbnail card with buttons to Telegram channel produces InternalServerError – Telegram API

Sending thumbnailcard to telegram channel produces following exception. This is working fine in emulator.

Operation returned an invalid status code ‘InternalServerError’

Here is the code for card:

var Card = new ThumbnailCard(cardHeading, BotName)
{
    Buttons = new List<CardAction>
    {
        new CardAction(ActionTypes.ImBack, "MyProfile", text:"MyProfile", displayText: "MyProfile", value: "MyProfile"),
        new CardAction(ActionTypes.ImBack, "MyBadges", text:"MyBadges", displayText: "MyBadges", value: "MyBadges"),
        new CardAction(ActionTypes.ImBack, "MyActivity", text:"MyActivity", displayText: "MyActivity", value: "MyActivity"),
        new CardAction(ActionTypes.ImBack, "LogOut", text: "LogOut", displayText: "LogOut", value: "LogOut")
    },
    Images = new List<CardImage>()
    {
        new CardImage()
        {
            Url = string.Format("data:image/png;base64,{0}", strBase64Image)
        }
    }
};
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2

Answers


  1. 0

    From the attachments sample:

    // Using a base64 string to send an attachment will not work on all channels.
// Additionally, some channels will only allow certain file types to be sent this way.
// For example a .png file may work but a .pdf file may not on some channels.
// Please consult the channel documentation for specifics.

    We can surmise from this information that Telegram does not support embedded images.

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  2. 0

    I doubt your CardImage Url format is correct. could you please try with below code snippet

    Images = new List<CardImage> { new CardImage("https://pbs.twimg.com/profile_images/3647943215/d7f12830b3c17a5a9e4afcc370e3a37e_400x400.jpeg") }

    Point To Remember:

    Emulator could manage many of the issue itself where channel always doesn’t.

    And Let me know if is it working

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