Question

我在文本框中输入文本，我希望将其格式化为30到60个字符的固定宽度的列。允许用户指定每行的宽度（即列的宽度），但默认为50个字符。

但是我已经做了一些研究，但我找不到我的目标是什么。我尝试过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
        }

    }

我认为我使用了错误的方法或未正确使用string.format。任何指导将不胜感激

更新：我想我没有清楚地说明自己。

例如：下面的文本是原始文本

我在文本框中输入文本，我希望将其格式化为30到60个字符的固定宽度的列。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，我希望以上文本在每行上显示50个字符

我在文本框中输入了要格式化为固定宽度的新行的文本每列30到60个字符。允许用户指定每行换行的宽度（即列的宽度），但默认为50个字符。

希望现在更有意义

Answer 1

您可以根据需要使用padleft或padright方法。这是padright方法的示例：

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

输出='HelloWorld'

这是padleft方法的示例：

    'textbox2 = {\"}
    'textbox3 = {\"}
    Dim sSource As String = RichTextBox1.Text 'String that is being searched
    Dim sDelimStart As String = TextBox2.Text 'First delimiting word
    Dim sDelimEnd As String = TextBox3.Text  'Second delimiting word
    Dim nIndexStart As Integer = sSource.IndexOf(sDelimStart) 'Find the first occurrence of f1
    Dim nIndexEnd As Integer = sSource.IndexOf(sDelimEnd, nIndexStart + sDelimStart.Length + 1) 'Find the first occurrence of f2

    If nIndexStart > -1 AndAlso nIndexEnd > -1 Then '-1 means the word was not found.
        Dim res As String = Strings.Mid(sSource, nIndexStart + sDelimStart.Length + 1, nIndexEnd - nIndexStart - sDelimStart.Length) 'Crop the text between
        MessageBox.Show(res) 'Display
    Else
        MessageBox.Show("One or both of the delimiting words were not found!")
    End If

输出='HelloWorld'

Answer 2

如果您决定将字符串分解为 n 个宽度的片段，请采用以下方法。但是，您很快就会发现该字符串以您可能不希望使用的方式分解了...这就是为什么您收到有关为什么要这样做的评论的原因。

@Component({
  ...
  encapsulation: ViewEncapsulation.None
})

...这就是你得到的：

  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 );
  }

按下按钮后，将文本放入固定宽度的列中

2 个答案: