/// <summary>
/// Resolve Dialog Expression as either Dialog, or StringExpression to get dialogid.
/// </summary>
/// <param name="dc">dialogcontext.</param>
/// <returns>dialog.</returns>
protected virtual Dialog ResolveDialog(DialogContext dc)
{
if (this.Dialog?.Value != null)
{
return(this.Dialog.Value);
}
// NOTE: we want the result of the expression as a string so we can look up the string using external FindDialog().
var se = new StringExpression($"={this.Dialog.ExpressionText}");
var dialogId = se.GetValue(dc.State);
return(dc.FindDialog(dialogId ?? throw new Exception($"{this.Dialog.ToString()} not found.")));
}
/// <summary>
/// Gets a value from a string expression, using a <see cref="TextTemplate"/>.
/// </summary>
/// <param name="stringExpression">The <see cref="StringExpression"/> to evaluate.</param>
/// <param name="dc">The current <see cref="DialogContext"/>.</param>
/// <param name="cancellationToken"><see cref="CancellationToken"/> for this call.</param>
/// <returns>A <see cref="Task{TResult}"/> representing the result of the asynchronous operation.</returns>
public static async Task <string> GetValueAsync(this StringExpression stringExpression, DialogContext dc, CancellationToken cancellationToken)
{
string text = await new TextTemplate(stringExpression.ExpressionText)
.BindAsync(dc, cancellationToken: cancellationToken)
.ConfigureAwait(false) ?? stringExpression.GetValue(dc.State);
if (!string.IsNullOrEmpty(text) && text.StartsWith("=", StringComparison.OrdinalIgnoreCase))
{
text = AdaptiveExpressions.Expression.Parse(text).TryEvaluate <string>(dc.State).value;
}
return(text);
}
protected Dialog ResolveDialog(DialogContext dc)
{
if (this.Dialog?.Value != null)
{
return(this.Dialog.Value);
}
var dcState = dc.GetState();
// NOTE: we call TryEvaluate instead of TryGetValue because we want the result of the expression as a string so we can
// look up the string using external FindDialog().
var se = new StringExpression($"={this.Dialog.ExpressionText}");
var dialogId = se.GetValue(dcState);
return(dc.FindDialog(dialogId ?? throw new Exception($"{this.Dialog.ToString()} not found.")));
}
public override async Task <DialogTurnResult> BeginDialogAsync(DialogContext dc, object options = null,
CancellationToken cancellationToken = new CancellationToken())
{
var status = string.Empty;
try
{
var input = FilesInfo?.GetValue(dc.State);
if (!string.IsNullOrEmpty(input))
{
var imageList = JsonConvert.DeserializeObject <List <SaveImage> >(input);
if (imageList?.Count > 0)
{
foreach (var saveImage in imageList)
{
var webClient = new WebClient();
webClient.DownloadFileAsync(saveImage.ContentUrl, saveImage.Name);
}
status = "successfully";
}
else
{
status = "Failed";
}
}
}
catch (Exception e)
{
status = e.Message;
}
await dc.Context.SendActivityAsync(MessageFactory.Text($"Files upload {status}"), cancellationToken);
return(await dc.EndDialogAsync(null, cancellationToken));
}
