使用C＃和XAML无法在按钮单击事件上获得动态创建的textbox.text数据

Question

I'm having trouble getting text from a textbox in c#/xaml. I am running 2 methods - the first which creates a stackpanel and adds 2 textboxes to it and the second is intended to just take the text from the 2 textboxes and assign it to a class object I have defined elsewhere. However - when I try to get the textbox.text, it says it doesn't recognise the variable name I have used for the textbox object. Can anyone offer any clue as to what I'm doing wrong? Here's my code.

public void createstackpanel()
    {
        StackPanel myStackPanel = new StackPanel();
        myStackPanel.Orientation = Windows.UI.Xaml.Controls.Orientation.Vertical;

        MyTextBoxTextClass Text1 = new MyTextBoxTextClass ();

        TextBox tb1 = new TextBox();
        TextBox tb2 = new TextBox();

        tb1.Text = "My TextBox 1 Text";
        tb2.Text = "My TextBox 2 Text";                    

        myStackPanel.Children.Add(tb1);
        myStackPanel.Children.Add(tb2);        

    }


    private void CreateStackPanelButton_Click(object sender, RoutedEventArgs e)
    {                       
//This gets pressed first
        createstackpanel();           
    }        


private void SendTextToClass_Click(object sender, RoutedEventArgs e)
    {                       
       //This gets pressed second.  I have created the StoreMyText class elsewhere and it simply contains 2 properties - textbox1 and textbox2 (both strings)
        StoreMyText mytext = new StoreMyText();
        mytext.textbox1 = tb1.Text;
        mytext.textbox2 = tb2.Text;
    }

The issue here is that tb1.Text and tb2.Text aren't being recognised. Why?

Answer 1

tb1 and tb2 declared in createstackpanel method. They can't accessed in SendTextToClass_Click method.

PS I think it's not doog idea to use dynamically created textboxes in this situation. What is a final goal of your code?

List of textboxes sample:

// class level declaration:
List<TextBox> textboxes = new List<TextBox>();

// createstackpanel method:
textboxes.Add(new TextBox() { Text = "textbox #1" });
textboxes.Add(new TextBox() { Text = "textbox #2" });

// SendTextToClass_Click method:
// some operation with textboxes list

Answer 2

Declare

TextBox tb1;
TextBox tb2;

outside the createstackpanel() function in the Class level.

and initialize

tb1 = new TextBox();
tb2 = new TextBox();

inside the createstackpanel() function.