XAML RichEditBox lines count

本文关键字：count lines RichEditBox XAML | 更新日期: 2023-09-27 18:34:35

UWP Windows 10.

如何获取RichEditBox的行数？

我想将行数、当前行和当前行绑定到状态栏中的标签(如记事本(。我该怎么做？

看看这个扩展类

public class TextBoxEx : TextBox
{
    public TextBoxEx()
    { }
    public void GoTo(int line, int column)
    {
        if (line < 1 || column < 1 || this.Lines.Length < line)
            return;
        this.SelectionStart = this.GetFirstCharIndexFromLine(line - 1) + column - 1;
        this.SelectionLength = 0;
    }
    public int CurrentColumn
    {
        get { return this.SelectionStart - this.GetFirstCharIndexOfCurrentLine() + 1; }
    }
    public int CurrentLine
    {
        get { return this.GetLineFromCharIndex(this.SelectionStart) + 1; }
    }
}

甚至更好;你可以这样写：

public int CurrentColumn
{
get { return textBox1.SelectionStart - textBox1.GetFirstCharIndexOfCurrentLine() + 1; }
}