How do I perform an await operation as while conditions or equivalence for it.?

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Hi everybody.
I've been working with SQLiteWinRT library and there's no way I can't implement (the far I know) the equivalence of async operation working in bucles for javascript.
Here is an example:

C#

await db.OpenAsync(SQLiteWinRT.SqliteOpenMode.OpenRead);
var stmt = await db.PrepareStatementAsync(
    "SELECT name FROM sqlite_master WHERE type = 'table'"
);
//this is the part
while ( await stmt.StepAsync() )
{
    string table = stmt.GetTextAt(0);
    this.ViewModel.DatabaseTables.Add(table);
}

I hope to be doing the right question.

Posted 21-Dec-15 10:28am

Pedro Luis Gil Mora

Updated 22-Dec-15 1:34am

v2

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Nathan Minier 22-Dec-15 7:41am

Have you considered using a Task.WhenAll construction?

Pedro Luis Gil Mora 22-Dec-15 10:18am

Maybe you didn't understand (or viceversa). The far I know, Task.WhenAll returns a Task when you provide a Task<TResult>[] as parameter. In this case, it's a kind of async iterator which it have to wait for each step results. Is this API available for WinRT???
PD: Sorry for my english, I'm Cuban.

Nathan Minier 22-Dec-15 10:41am

No worries, just would have been a different design pattern. I'm glad that you were able to resolve your issue.

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Pedro Luis Gil Mora · Accepted Answer · 2015-12-22T01:53:00

I've found the solution by myself . I hope this can help someone

stmt.stepAsync().then(function(r) {
    if (r) {
        var obj = {}, i = -1;
        while (++i < stmt.columnCount) {
            obj[stmt.getColumnName(i)] = stmt.getTextAt(i);
        }
        arr.push(obj);
        stmt.stepAsync().then(arguments.callee);
    } else {
        console.log(arr);
    }
})