C# StringFormat: Text Direction & Alignment Guide

1 year ago
Liam
2 minutes

In C#, the StringFormat class can be used to format strings, including setting text direction and alignment. Below, we will explain in detail how to use the StringFormat class to set text direction and alignment.

  1. Text direction setting:
    The direction of the text can be set using the FormatFlags property of the StringFormat class. You can specify the text direction through the SetMeasurableCharacterRanges method.
StringFormat stringFormat = new StringFormat();
stringFormat.FormatFlags = StringFormatFlags.DirectionRightToLeft; // 将文本设置为从右到左
stringFormat.SetMeasurableCharacterRanges(new CharacterRange[] { new CharacterRange(0, str.Length) }); // 设置整个文本的方向
  1. Alignment and LineAlignment properties of the StringFormat class can be used to set the alignment of the text.
StringFormat stringFormat = new StringFormat();
stringFormat.Alignment = StringAlignment.Center; // 设置水平对齐方式为居中
stringFormat.LineAlignment = StringAlignment.Center; // 设置垂直对齐方式为居中
  1. Here is an example of how to use the StringFormat class to set the text direction and alignment:
string str = "Hello, World!";
Graphics g = this.CreateGraphics();
Font font = new Font("Arial", 12);
SizeF size = g.MeasureString(str, font);
RectangleF rect = new RectangleF(10, 10, size.Width, size.Height);

StringFormat stringFormat = new StringFormat();
stringFormat.FormatFlags = StringFormatFlags.DirectionRightToLeft;
stringFormat.SetMeasurableCharacterRanges(new CharacterRange[] { new CharacterRange(0, str.Length) });

g.DrawString(str, font, Brushes.Black, rect, stringFormat);

In the example above, start by creating a Graphics object and specifying the text string, font, and drawing area to be used. Next, create a StringFormat object and set the text direction from right to left. Finally, use the DrawString method to draw the text within the specified area.

With the information provided above, you can use the StringFormat class in C# to set text direction and alignment.

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