C#:多行文本框与TextBox.WordWrap显示长字符串的Base64 [英] C#: Multiline TextBox with TextBox.WordWrap Displaying Long Base64 String
问题描述
新年快乐!
我有一个文本框来显示一个很长的Base64字符串。在 TextBox.Multline = TRUE
和 TextBox.WordWrap = TRUE
。
I have a textbox to display a very long Base64 string. The TextBox.Multline = true
and TextBox.WordWrap = true
.
该问题是由文本框本身的自动字边界检测引起的。基于64位字符串有'+'的64个字符的Base64编码之一。因此,文本框会包起来的+字,这是不是我想要的(因为使用可能会觉得周围有'+'字符换行符)。
The issue is caused by the auto-word-boundary detection of the TextBox itself. The Base64 string has '+' as one of the 64 characters for Base64 encoding. Therefore, the TextBox will wrap it up at the '+' character, which is not what I want (because the use might think there is a newline character around the '+' character).
我只是想显示在文本框Mulitline模式的Base64我的字符串,但无字边界检测,也就是说,如果 TextBox.Width
只能包含80个字符,然后每行应该有确切的80个字符,除了最后一行。
I just want my Base64 string displayed in Mulitline-mode in TextBox, but no word boundary detection, that is, if the TextBox.Width
can only contain 80 characters, then each line should have exact 80 characters except the last line.
我不知道我是否说清楚了。
I'm not sure if I made myself clear.
感谢。
彼得
推荐答案
在太聪明你的目的智能包装。只要保持多
,关闭自动换行
和包装自己的文字:
Smart wrap in too smart for your purposes. Just keep Multiline
, turn off WordWrap
and wrap the text yourself:
public IEnumerable<string> SimpleWrap(string line, int length)
{
var s = line;
while (s.Length > length)
{
var result = s.Substring(0, length);
s = s.Substring(length);
yield return result;
}
yield return s;
}
更新:
这可使用固定宽度字体适合在文本框
字符数的估计是:
An estimate of the number of characters that can fit in a TextBox
using a fixed-width font is:
public int GetMaxChars(TextBox tb)
{
using (var g = CreateGraphics())
{
return (int)Math.Floor(tb.Width / (g.MeasureString("0123456789", tb.Font).Width / 10));
}
}
一个可变宽度字体是很难但可以用 MeasureCharacterRanges
来完成。
A variable-width font is harder but can be done with MeasureCharacterRanges
.
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