blocks|key|1439775|text|我可能遗漏了一些东西，但我不知道您将读取结果添加到文本框的位置！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1439776|您正在返回buffer，但没有在任何地方使用它。|1439777|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I may be missing something but I don't see where you are appending the result of your read to the textbox!

You are returning buffer but not using it anywhere.

blocks|key|1439794|text|执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1439795|1439796|有一个按钮。单击按钮时使用|ordered-list-item|1439797|，调用ReadFile()，将从ReadFile()收到的byte[]转换为字符串并显示在TextBox中。|1439798|1439799|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|L|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|M|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|N|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|P|8|@]|9|@]|A|$]]]|J|$]]

Do this:

<ol>
<li>Have a button.</li>
<li>On button click, call ReadFile(), convert byte[] received from ReadFile() to string and display in TextBox.</li>
</ol>

blocks|key|1440806|text|使用以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1440807|在窗体的构造函数中，编写以下代码：|1440808|public+Form1()
{
++++InitializeComponent();+//+This+should+already+be+there+by+default

++++string+content+=+File.ReadAllText(@"help.txt");
++++richTextBox1.Text+=+content;
}|code-block|syntax|javascript|1440809|这将一次性读取给定文件中的所有文本，并将其分配给富文本框。在读取方法中的文本时，不会将结果byte数组转换为字符串，也不会将其分配给富文本框。简单地读取文件不会有什么帮助。|offset|length|style|CODE|1440810|请同时删除+TextChanged+事件：每次更改富文本框中的文本时都会调用TextChanged事件。为Text属性设置新值时也会出现这种情况，这将导致无限递归。此外，当文本一开始没有更改时，永远不会调用此事件，因此您必须在富文本框中手动输入文本才能触发此事件。|BOLD|1440811|entityMap^0|0|0|0|19|4|0|0|5|6|B|I|3|6|B|12|B|1H|4|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|V|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|W|8|@$K|X|L|Y|M|N]]|9|@]|A|$]]|$1|O|3|P|5|6|7|Z|8|@$K|10|L|11|M|Q]|$K|12|L|13|M|Q]|$K|14|L|15|M|Q]|$K|16|L|17|M|N]|$K|18|L|19|M|N]|$K|1A|L|1B|M|N]]|9|@]|A|$]]|$1|R|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]]|S|$]]

Use this:

In the form's constructor, write the following code:

<pre><code>public Form1()
{
 InitializeComponent(); // This should already be there by default

 string content = File.ReadAllText(@"help.txt");
 richTextBox1.Text = content;
}
</code></pre>

This reads all the text from the given file in one go and assigns it to the rich text box. While you read the text in your method, you're not converting the resulting <code>byte</code> array to a string and you're also not assigning it to the rich text box. Simply reading the file won't help.

Please remove the <code>TextChanged</code> event also: The <code>TextChanged</code> event is called every time the text in the rich text box is changed. This is also the case when setting a new value to the <code>Text</code> property, which would cause an infinite recursion. Also, this event is never called when the text doesn't change in the first place, so you would have to enter text manually in the rich text box to fire this event.

blocks|key|1440847|text|你不需要富文本框，一个简单的textbox就可以满足你的需求。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1440848|public+void+ReadFile()+{

++++TextReader+reder+=+File.OpenText(@"help.txt");
++++textBox1.Text+=+reder.ReadToEnd();++++++++
}|code-block|syntax|javascript|1440849|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Change the method to the following and you don't need rich textbox, a simple textbox can serve the purpose.

<pre><code>public void ReadFile() {

 TextReader reder = File.OpenText(@"help.txt");
 textBox1.Text = reder.ReadToEnd(); 
}
</code></pre>

blocks|key|775040|text|这里有几个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|775041|我假设richTextBox1_TextChanged与您想要填充的RichTextBox的changed事件相关联。这意味着除非手动更改RichTextBox本身的内容，否则它不会执行。|775042|此外，在该方法中，您正在调用一个方法(ReadFile)，该方法读取您的文件并以byte[]的形式返回内容，但是结果丢失了，因为您并没有使用它。|775043|那么，即使您读取文件的方式也是不正确的，因为您一次读取所有文件(您指定读取文件中包含的确切字符数)，因此不需要while循环。|775044|我会附加到表单的load事件，并编写如下代码：|775045|public+string+FillRichText(string+aPath)
{
++++string+content+=+File.ReadAllText(aPath);
++++richTextBox1.Text+=+content;
}

private+void+Form1_Load(object+sender,+EventArgs+e)
{
++++FillRichText(@"help.txt");
}|code-block|syntax|javascript|775046|您需要在表单的InitializeComponent()中使用此行：|775047|this.Load+%2B=+new+System.EventHandler(this.Form1_Load);|775048|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|X|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|Z|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|R|5|L|7|11|8|@]|9|@]|A|$M|N]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

You've got a couple of problems here.

I suppose that richTextBox1_TextChanged is associated with the changed event of the RichTextBox you want to fill. This means that it isn't executed unless you manually change the content of the RichTextBox itself.

Furthermore in the method you are calling a method (ReadFile) which read your file and return the content as a byte[], but the result get lost since you aren't using it anyway.

Then even the way you are reading the file is not correct, since you are reading all the file at once (you are specifying to read the exact number of characters contained in the file), so the while loop isn't needed.

I would attach to the load event of the form and write something like this:

<pre><code>public string FillRichText(string aPath)
{
 string content = File.ReadAllText(aPath);
 richTextBox1.Text = content;
}

private void Form1_Load(object sender, EventArgs e)
{
 FillRichText(@"help.txt");
}
</code></pre>

You will need this line in the InitializeComponent() of your form:

<pre><code>this.Load += new System.EventHandler(this.Form1_Load);
</code></pre>

blocks|key|2496822|text|public+partial+class+Form1+:+Form
{
++++public+Form1()
++++{
++++++++InitializeComponent();
++++}

++++private+void+button1_Click(object+sender,+EventArgs+e)
++++{
++++++++if+(openFileDialog1.ShowDialog()+==+DialogResult.OK)+++
++++++++{
++++++++++++label1.Text+=+openFileDialog1.FileName;
++++++++++++richTextBox1.Text+=+File.ReadAllText(label1.Text);
++++++++}
+}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2496823|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>public partial class Form1 : Form
{
 public Form1()
 {
 InitializeComponent();
 }

 private void button1_Click(object sender, EventArgs e)
 {
 if (openFileDialog1.ShowDialog() == DialogResult.OK) 
 {
 label1.Text = openFileDialog1.FileName;
 richTextBox1.Text = File.ReadAllText(label1.Text);
 }
 }
</code></pre>

I am trying to display the content of a txt file.
I thought I should use RichTextBox for that method. What I've done was this. However it does not work.

<pre><code>public static byte[] ReadFile() {

 FileStream fileStream = new FileStream(@"help.txt", FileMode.Open, FileAccess.Read);
 byte[] buffer;
 try {
 int length = (int)fileStream.Length; // get file length
 buffer = new byte[length]; // create buffer
 int count; // actual number of bytes read
 int sum = 0; // total number of bytes read

 // read until Read method returns 0 (end of the stream has been reached)
 while ((count = fileStream.Read(buffer, sum, length - sum)) &gt; 0)
 sum += count; // sum is a buffer offset for next reading
 } finally {
 fileStream.Close();
 }
 return buffer;
 }

 private void richTextBox1_TextChanged(object sender, EventArgs e) {
 ReadFile();
 }
</code></pre>

Displaying a text file on a Windows Form for C#

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试显示txt文件的内容。我想我应该使用RichTextBox来实现这个方法。我所做的是这样的。然而，它不起作用。public static byte[] ReadFile() {        FileStream fileStream = new FileStream(@"help.txt", FileMod...

问在C#的Windows窗体上显示文本文件
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