Adding textbox & button programmatically -> Button Click event with no content for textbox

I'm pretty new to this and so far I haven't found any solution online which solves my problem.

I'd like to use controls by adding them programmatically, which works and the contents shows in the window, but as soon I want to save the content via button, the event handler doesn't get the variables passed to it.

I've got the following situation where I don't know what I miss. (WPF4, EF, VS2010)

In XAML I have a grid where I'd like to add eg. a textbox and a button from code behind like

<Grid  Name="Grid1">
    <Grid.RowDefinitions>
        <RowDefinition Height="100"></RowDefinition>
        <RowDefinition Height="50"></RowDefinition>
    </Grid.RowDefinitions>

    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="75*"></ColumnDefinition>
        <ColumnDefinition Width="25*"></ColumnDefinition>
    </Grid.ColumnDefinitions>

    <TextBox Grid.Row="2"  Name="textBox1" />
</Grid >

In code-behind:

private void CheckMatching ()
{
    TextBox textBox2 = new TextBox();
    textBox2.Text = "textbox to fill";
    textBox2.Name = "textBox2";

    Grid1.Children.Add(textBox2);

    Button SaveButton = new Button();
    SaveButton.Name = "Save";
    SaveButton.C开发者_StackOverflowontent = "Save";

    SaveButton.Click += new RoutedEventHandler(SaveButton_Click);
    Grid1.Children.Add(SaveButton);
}

private void SaveButton_Click ( object sender, RoutedEventArgs e )
{
    // works fine 
    string ShowContent1 = textBox1.Text;

    // It doesn't show up in intellisense, so I cant use it yet
    string ShowContent2 = textBox2.Text;
}

I can access the content of the textbox in XAML or everything else set in XAML, but I don't get the content of anything else I set in code-behind. The content itself is shown in the window.

I tried different approaches already. Nothing worked so far.

This question is not a WPF issue but something very basic to the Object Oriented Computer Programming.

How can you expect that an object (textBox2) that was delcared and created locally in CheckMatching method be available in another method like SaveButton_Click?

For that you can scope it class level.

 private TextBox textBox2;

 private void CheckMatching ()
 {
     this.textBox2 = new TextBox();
     this.textBox2.Text = "textbox to fill";
     this.textBox2.Name = "textBox2";

     Grid1.Children.Add(this.textBox2);
     .....
 }

 private void SaveButton_Click ( object sender, RoutedEventArgs e )
 {
       string ShowContent1 = textBox1.Text; // works fine
       string ShowContent2 = this.textBox2.Text; // should work too
 } 

And then you can also do it WPF way....

 private void SaveButton_Click ( object sender, RoutedEventArgs e )
 {
       string ShowContent1 = textBox1.Text; // works fine
       string ShowContent2 = ((TextBox)Grid1.Children[1]).Text; // should work too
 }