具有来自XAML的参数控件类型的C＃事件处理程序

Question

I want to call onClick event and transfer Textbox object to the eventhandler from .xaml code. is that posible?

i'll try to illustrate,

This is my Main.xaml.cs code:

<Button x:Name="VideoTargetBtn" Content="Browse..." HorizontalAlignment="Left" VerticalAlignment="Top" Width="89"  Click="VideoTargetBtn_Click" Height="27" Margin="10,13,0,0"/>
<TextBox x:Name="videoTargetPathTxt" Height="27" TextWrapping="Wrap" VerticalAlignment="Top" IsReadOnly="True"  Margin="117,13,21,0"/>

And that's what I want to do:

private void VideoTargetBtn_Click(object sender, RoutedEventArgs e, TextBox currTextbox)
{
    SaveFileDialog saveFileDialog = new SaveFileDialog();
    bool? fileIsSelected = saveFileDialog.ShowDialog();
    if (fileIsSelected == true)
    {
        currTextbox.Text = saveFileDialog.FileName;
    }
}

Answer 1

If all you need to do is access the control from your code behind you can just reference it by name since you use the x:Name attribute on the control with a value of videoTargetPathTxt.

Leave the event handler as normal and replace your code with

if (fileIsSelected == true)
{
    videoTargetPathTxt.Text = saveFileDialog.FileName;
}

Answer 2

No it isn't and you don't need to,

in the private VideoTargetBtn_Click handler just retrieve the textbox contents

videoTargetPathTxt.Text


private void VideoTargetBtn_Click(object sender, RoutedEventArgs e)
{
    SaveFileDialog saveFileDialog = new SaveFileDialog();

    bool? fileIsSelected = saveFileDialog.ShowDialog();

    if (fileIsSelected == true)
    {
        videoTargetPathTxt.Text = saveFileDialog.FileName;
    }
}