使用 Graphics.MeasureString 进行字符串测量

Question

请看我的代码：

Graphics grfx = Graphics.FromImage(new Bitmap(1, 1));

System.Drawing.Font f = new System.Drawing.Font("Times New Roman", 10, FontStyle.Regular);

const string text1 = "check_space";
SizeF bounds1 = grfx.MeasureString(text1, f);

const string text2 = "check_space ";
SizeF bounds2 = grfx.MeasureString(text2, f);

Assert.IsTrue(bounds1.Width < bounds2.Width); // I have Fail here!

我想知道为什么我的测试失败了。为什么文本with尾部空格不比文本没有空格宽？

更新：我可以理解这两个字符串不相等。但据我所知，字符串 with 空间的宽度应大于字符串 without 空间。不要？

Answer 1

您必须告诉它测量尾随空格，默认情况下它不这样做。

Graphics grfx = Graphics.FromImage(new Bitmap(1, 1));

System.Drawing.Font f = new System.Drawing.Font("Times New Roman", 10, FontStyle.Regular);

string text1 = "check_space";
SizeF bounds1 = grfx.MeasureString(text1, f, new PointF(0,0), new StringFormat( StringFormatFlags.MeasureTrailingSpaces ));

string text2 = "check_space ";
SizeF bounds2 = grfx.MeasureString(text2, f, new PointF(0,0), new StringFormat( StringFormatFlags.MeasureTrailingSpaces ) );