How to call the stackpanel children in button click events

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VS2010

I created a inkcanvas control by creating a custom inkcanvas class .I had taken the instances of this class and add them to stack panel.I dragged the one button control to the mainwindow.In the button click event the instance of stackpanel names (mycanvas1 ) was not visible.how to solve it.

here my code

C#

public partial class MainWindow : Window
   {
       public MainWindow()
       {
           InitializeComponent();
           mycan mycanvas1 = new mycan();
           stkm.Children.Add(mycanvas1);
        }
       

private  void   savebtn_Click(object sender, RoutedEventArgs e )
 {
 
var files = Directory.GetFiles(@"C:\\Users\\SriRampavankumar\\Desktop\\proj").Length;
string fileName = namebox.Text.Substring(0, 3) + -+ ++files + ".txt";
string path2 = System.IO.Path.GetFullPath("C:\\Users\\tom\\Desktop\\proj");
string docPath = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
string var = System.IO.Path.Combine(docPath, path2);
string var1 = System.IO.Path.Combine(var, fileName);
            using (StreamWriter writer = new StreamWriter(var1))
            {
                string var6 = namebox.Text;
                string var7 = "                 ";
                string var8 = agebox.Text;

           }

Posted 2-Dec-14 23:36pm

pavan kadambari

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Punamchand Dhuppad · Answer 1 · 2014-12-04T19:56:00

Hi Pavan

You can find child from StackPanel with this function which is given here
http://msdn.microsoft.com/en-us/library/system.windows.frameworktemplate.findname%28v=vs.110%29.aspx[^]

C#

private childItem FindVisualChild<childitem>(DependencyObject obj)
    where childItem : DependencyObject
{
    for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)
    {
        DependencyObject child = VisualTreeHelper.GetChild(obj, i);
        if (child != null && child is childItem)
            return (childItem)child;
        else
        {
            childItem childOfChild = FindVisualChild<childitem>(child);
            if (childOfChild != null)
                return childOfChild;
        }
    }
    return null;
}

and call following code on your button click -

C#

object obj = FindVisualChild<mycan>(stkm);

If you will add more than one child items into the stakpanel then give "Name" to each child item and check inside "FindVisualChild" function with "Name" property.