C# 调整文本框大小以适应内容

问题描述

我正在编写一个程序，用户应该能够在 TextBox 中编写文本.我希望 TextBox 自行调整大小，使其适合内容.我尝试了以下方法:

private void textBoxTitle_TextChanged(object sender, TextChangedEventArgs e){System.Drawing.Font myFont = new System.Drawing.Font("Verdana", 8);System.Drawing.SizeF mySize = e.Graphics.MeasureString("这是一个测试", myFont);this.textBoxTitle.Width = (int)Math.Round(mySize.Width, 0);}

我收到一条错误消息，提示 Graphics 不适用于 TextChangedEventArgs.还有其他方法可以调整 TextBox 的大小吗?

你应该试试下面这样的代码.它对我很有效.

private void textBox1_TextChanged(object sender, EventArgs e){大小 size = TextRenderer.MeasureText(textBox1.Text, textBox1.Font);textBox1.Width = size.Width;textBox1.Height = 大小.高度；}

有关详细信息，请参阅 TextRenderer.MeasureText()p>

I'm writing a program where the user should be able to write text in a TextBox. I'd like the TextBox to resize itself, so it fits to the content. I've tried the following:

private void textBoxTitle_TextChanged(object sender, TextChangedEventArgs e)
{
    System.Drawing.Font myFont = new System.Drawing.Font("Verdana", 8);
    System.Drawing.SizeF mySize = e.Graphics.MeasureString("This is a test", myFont);
    this.textBoxTitle.Width = (int)Math.Round(mySize.Width, 0);
}

I get an error saying that Graphics doesn't work for TextChangedEventArgs. Is there another way I can resize the TextBox?

You should try a code something like below. It has worked for me well.

private void textBox1_TextChanged(object sender, EventArgs e)
{
  Size size = TextRenderer.MeasureText(textBox1.Text, textBox1.Font);
  textBox1.Width = size.Width;
  textBox1.Height = size.Height;
}

For more information refer to TextRenderer.MeasureText()

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