从TextBox的开头删除特定的行号 [英] Removing Specific Line Numbers From The Start Of TextBox

问题描述

您好b $ b

所以我想知道如何从一开始就从多行文本框的开头删除特定行号。



i知道它会是这样的

Hi
So i was wondering how do you remove specific line number from the start of a multi line textbox from the start.

i know it would be something like this

if (TextBox.Text.Equals(StringNumber/s))
{
  TextboxName.Text = "";
}

请帮我解决这个问题吧:)总是如此谢谢/>


编辑：所以很多行已导入到多行文本框中，我想要的是一旦导入行以从中移除x行数停止文本框是更好的？这就是我上面尝试的代码。

please help me get this code right :) thanks as always

edit: so a lot of lines has been imported in to a multi line textbox and what i am wanting is once the lines has been imported to remove x amount of lines from the stop of the textbox is that better? that is the code i have tried above.

推荐答案

			// input string:..
			String testText = @"This 
is 
my 
test 
text 
string";

			// number of lines to take away from the result
			int toRemove = 2;

			// turn the input string into an array (split by newlines)
			List<string> testLines = new List<String>(testText.Split(new String[] { Environment.NewLine }, StringSplitOptions.None));		

			// counter for the number of lines already removed
			for (int lineNo = 0; lineNo < toRemove; lineNo++)
			{
				// remove the line in question
				testLines.RemoveAt(0);
			}

			// compund the result with newline character strings into one
			textBox1.Text = String.Join(Environment.NewLine, testLines.ToArray());

// input string:..
			String testText = @"This 
is 
my 
test 
text 
string";

			// line indexes to take away from the result
			int[] toRemove = {2, 4};

			// turn the input string into an array (split by newlines)
			List<string> testLines = new List<String>(testText.Split(new String[] { Environment.NewLine }, StringSplitOptions.None));		

			// counter for the number of lines already removed
			int backpace = 0;			
			foreach(int lineNo in toRemove)
			{
				// realign the array index counter according to the number of lines so far removed
				int in_lineNo = lineNo - backpace;
		
				// remove the line in question
				testLines.RemoveAt(in_lineNo);

				// update the lines removed counter
				backpace++;
			}

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