UWP C# 滚动到 TextBox 底部 [英] UWP C# Scroll to the bottom of TextBox

问题描述

如何滚动到 UWP 应用的文本框底部?

How do you scroll to the bottom of a TextBox for a UWP app?

随着我向 UWP 的过渡，这一直是一个没有直接解决的问题.

With my transition to UWP, this has been one of the questions that hasn't been straight-forward.

我曾经可以使用这个:

textBox.SelectionStart = textBox.TextLength;
textBox.ScrollToCaret();

但是，这不适用于 UWP 应用

But, this doesn't work for UWP apps

推荐答案

如果有人需要在 UWP 应用中滚动到 TextBox 的底部:

If anyone needs to scroll to the bottom of a TextBox in UWP apps:

https://code.msdn.microsoft.com/windowsapps/How-to-scroll-to-the-a8ea5867

private void TextBox_TextChanged(object sender, TextChangedEventArgs e) 
{ 
    var grid = (Grid)VisualTreeHelper.GetChild(textBox1, 0); 
    for (var i = 0; i <= VisualTreeHelper.GetChildrenCount(grid) - 1; i++) 
        { 
            object obj = VisualTreeHelper.GetChild(grid, i); 
            if (!(obj is ScrollViewer)) continue; 
            ((ScrollViewer)obj).ChangeView(0.0f, ((ScrollViewer)obj).ExtentHeight, 1.0f); 
            break; 
        } 
    }
}

其中 textBox1 是您要滚动到底部的 TextBox.

where textBox1 is the TextBox you want to scroll to the bottom.

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