How I solved a Quantity Text Box Problem

[gbourque]

I have a strategy I've been working on for quite some time. It replaces most of the ChartTrader right-margin controls. In it I can set stop and target quantities and have buttons for different kinds of trades. But I wanted to be able to still use the right-click on the chart options to also place trades. But the problem was when I change quantities in my strategy this do not change the default ChartTrader strategy. So I got access to the Quantity TextBox and changed the .Text amount. This did change the amount in the text box, but not on the right click menu. This is documented by Microsoft, changing a text box value programmatically does not trigger a TextChanged event. There has to be an actual key event.

So I tried different ways and nothing worked. Finally I tried a SendWait to send an ENTER key, and it worked. Here is the code. Note that since I've hidden the ChartTrader control grid in which the text box resides, I had to unhide it for the moment, because if the text box is hidden it can't gain focus.

ChartControl.Dispatcher.InvokeAsync((() =>
{
AccountSelector acctsel = (Window.GetWindow(ChartControl.Parent) as Chart).FindFirst("ChartTraderControlAccountSelecto r") as AccountSelector;
acctsel.SelectedAccount = Account.All.First(a => a.Name == Account.Name);

TextBox quantityTextBox = (Window.GetWindow(ChartControl.Parent) as Chart).FindFirst("ChartTraderControlQuantityEdit") as TextBox;
string text = (Tgt1Quantity + Tgt2Quantity + Tgt3Quantity).ToString();
if (text != quantityTextBox.Text)
{
ChartTraderControlGrid1.Visibility = Visibility.Visible;
quantityTextBox.Focus();
quantityTextBox.Text = text;
System.Windows.Forms.SendKeys.SendWait("{ENTER}");
ChartTraderControlGrid1.Visibility = Visibility.Collapsed;
}
}));

[NinjaTrader_ChelseaB]

Hello gbourque,

After setting the Visibility, instead of setting Text, set the Value.

Below is a link to an example.

https://support.ninjatrader.com/s/article/Chart-Trader-UI-Elements-from-Automation-IDs

[gbourque]

TextBox does not have a Value property. See image.

[gbourque]

Print(quantityTextBox.GetType());

System.Windows.Controls.TextBox

[NinjaTrader_ChelseaB]

Hello gbourque,

The object is not a textbox but contains one. This is a NinjaTrader.Gui.Tools.QuantityUpDown as demonstrated in the example I have provided you.

[gbourque]

Chelsea is right again!

Yeah, I wish I had seen this example before. I had tried something like this, but think I was getting the wrong control. I don't even have to make it visible for this to work, like with the AccountSelector. Now it all makes sense.

Better solution. Thank you.

AccountSelector acctSel = (Window.GetWindow(ChartControl.Parent) as Chart).FindFirst("ChartTraderControlAccountSelecto r") as AccountSelector;
acctSel.SelectedAccount = Account.All.First(a => a.Name == Account.Name);

QuantityUpDown quantitySel = (Window.GetWindow(ChartControl.Parent) as Chart).FindFirst("ChartTraderControlQuantitySelect or") as QuantityUpDown;
quantitySel.Value = Tgt1Quantity + Tgt2Quantity + Tgt3Quantity;