public static async Task ReplyWithChart(IDialogContext context, string workbookId, string worksheetId, WorkbookChart chart)
{
try
{
// Create and save user nonce
var userNonce = (Guid.NewGuid()).ToString();
context.ConversationData.SetValue <ChartAttachment>(
userNonce,
new ChartAttachment()
{
WorkbookId = workbookId,
WorksheetId = worksheetId,
ChartId = chart.Id
});
await context.FlushAsync(context.CancellationToken);
// Reply with chart URL attached
var reply = context.MakeMessage();
reply.Recipient.Id = (reply.Recipient.Id != null) ? reply.Recipient.Id : (string)(HttpContext.Current.Items["UserId"]);
var image = new Microsoft.Bot.Connector.Attachment()
{
ContentType = "image/png",
ContentUrl = $"{RequestHelper.RequestUri.Scheme}://{RequestHelper.RequestUri.Authority}/api/{reply.ChannelId}/{reply.Conversation.Id}/{reply.Recipient.Id}/{userNonce}/image"
};
reply.Attachments.Add(image);
await context.PostAsync(reply);
}
catch (Exception ex)
{
await context.PostAsync($"Sorry, something went wrong getting the **{chart.Name}** chart ({ex.Message})");
}
}
// Mandatory: you should have this ctor as it is used by the recognizer
public MyAwaitableImage(Microsoft.Bot.Connector.Attachment source) : base(source)
{
}
// Optional: here you can define your custom logic to get the attachment data or add custom logic to check it, etc..
protected override async Task <Stream> ResolveFromSourceAsync(Microsoft.Bot.Connector.Attachment source)
{
var result = await base.ResolveFromSourceAsync(source);
return(result);
}