按下按钮后将文本放入固定宽度的列

Question

我在文本框中有文本，我想将其格式化为 30 到 60 个字符的固定宽度列。允许用户指定每行的宽度（即列的宽度），但默认为 50 个字符。

我已经做了一些研究，但是我找不到任何关于我的目标是什么。 我试过String.Format 但是，它什么也没做

string test = ""
        if(txtBoxContent.Text == string.Empty)
        {
            MessageBox.Show("There are no '>' symbols to remove. Please paste the infected text first");
        }

        else if (!txtBoxContent.Text.Contains(">"))
        {
            MessageBox.Show("There are no '>' symbol(s) in the text OR are already removed");
        }

        else
        {
            contentWithoutCharacters = txtBoxContent.Text.Replace(">", "");
            txtBoxContent.Text = contentWithoutCharacters;


            //MessageBox.Show("Removed Successfully");

            test = string.Format("{0,50}", contentWithoutCharacters); // this
        }

    }

我假设我采取了错误的方法或没有正确使用string.format。任何指导将不胜感激

更新： 我想我没有清楚地解释我自己。

例如：以下文字为原文

我在文本框中有文本，我想将其格式化为 30 到 60 个字符的固定宽度列。允许用户指定每行的宽度（即列的宽度），但默认为 50 个字符。

当我按下按钮时，我希望上面的文本每行显示 50 个字符

我想将文本框中的文本格式化为固定宽度的换行 30 到 60 个字符的列。允许用户指定每行的换行宽度（即列的宽度），但默认为 50 个字符。

希望现在更有意义

Answer 1

如果您决定将字符串分解为 n 宽度的片段，这里有一个方法。但是，您很快就会发现字符串以您不希望的方式分解……这就是为什么您让 cmets 想知道您为什么要这样做。

  var originalText = "Now is the time; yada yada; thing and the thing! Now is the time; yada yada; thing and the thing! Now is the time; yada yada; thing and the thing! Now is the time; yada yada; thing and the thing! Now is the time; yada yada; thing and the thing! Now is the time; yada yada; thing and the thing! Now is the time; yada yada; thing and the thing! ";

  txtBoxContent.Clear();
  txtBoxContent.WordWrap = false; //--> to make sure nothing spills to the next line
  var part = string.Empty;

  var index = 0; //--> define this outside the loop, so you can use it to pick up any remainder
  var width = 30;  //--> ...or whatever width you need

  for ( index = 0; index < ( originalText.Length - width ); index += width )
  {
    part = originalText.Substring( index, width );
    //--> do something useful with the fixed-length part...
    txtBoxContent.Append( part + Environment.NewLine );
  }

  //--> deal with the remainder, if any...
  if ( index < originalText.Length )
  {
    //--> the last piece...it will be less than width wide...
    part = originalText.Substring( index, originalText.Length - index );
    txtBoxContent.Append( part );
  }

...这就是你得到的：

Now is the time; yada yada; th
ing and the thing! Now is the
time; yada yada; thing and the
 thing! Now is the time; yada
yada; thing and the thing! Now
 is the time; yada yada; thing
 and the thing! Now is the tim
e; yada yada; thing and the th
ing! Now is the time; yada yad
a; thing and the thing! Now is
 the time; yada yada; thing an
d the thing!

Answer 2

您可以根据需要使用 padleft 或 padright 方法。下面是padright方法的例子：

string str  = "HelloWorld"
str.PadRight(11);

输出 = 'HelloWorld'

下面是padleft方法的例子：

string str  = "HelloWorld"
str.PadLeft(11);

输出 = 'HelloWorld'