c#中字符串显示上标和下标解决办法

　　由于工作的需求，需要在word中插入带入带有上标和下标的字符串，比如这样的一个字符串：SO₄²⁻(mg/L)。在网上搜了好久，终是摸索出点思路。

　　解决办法：使用转义字符加Unicode的HexEntity就可以实现了。比如定义一个SO₄²⁻(mg/L)这样的字符串如下："SOx2084x00B2x207B(mg/L)"。其中x2084为 ₄（注意：此处为4的下标） 的Unicode HexEntity，x00B2为 ²（注意：此处为2的上标） 的Unicode HexEntity，x207B为 ⁻（注意：此处为-的上标） 的Unicode HexEntity。

　　

　　一些常用字符如下：

Common Arithmetic & Alebgra

Character Name	Character	Entity	Num  Entity	Hex  Entity
LESS THAN	<	&lt;	&#60;	&#x3C;
GREATER THAN	>	&gt;	&#62;	&#x3E;
LESS THAN OR EQUAL TO	≤	&le;	&#8804;	&#x2264;
GREATER THAN OR EQUAL TO	≥	&ge;	&#8805;	&#x2265;
PLUS OR MINUS	±	&plusmn;	&#177;	&#xB1;
NOT EQUALS	≠	&ne;	&#8800;	&#x2260;
DIVISION SIGN	÷	&divide;	&#247;	&#xF7;
TIMES X	×	&times;	&#215;	&#x00D7;
MINUS	−	&minus;	&#8722;	&#x2212;
DIVISION SLASH	∕	--	&#8725;	&#x2215;
FRACTION SLASH	⁄	&frasl	&#8260;	&#x2044;
SQUARE ROOT RADICAL	√	&radic;	&#8730;	&#x221A;
CUBE ROOT	∛	--	&#8731;	&#x221B
FOURTH ROOT	∜	--	&#8732;	&#x221C
INFINITY	∞	&infin;	&#8734;	&#x221E;
ALEF INFINITY SYMBOL	ℵ	&alefsym;	&#8501;	&#x2135;
FUNCTION ITALIC F	ƒ	&fnof;	&#402;	&#x192;
PRIME (single quote)	′	&prime;	&#8242;	&#x2032;
DOUBLE PRIME (double quote)	″	&Prime;	&#8243;	&#x2033;
TRIPLE PRIME (triple quote)	‴	--	&#8244;	&#x2034;
THEREFORE (Triangular Dots)	∴	&there4;	&#8756;	&#x2234;
DOT OPERATOR	⋅	&sdot;	&#8901;	&#x22C5
SUPERSCRIPT TWO	¹	&sup1;	&#185;	&#xB9;
SUPERSCRIPT TWO	²	&sup2;	&#178;	&#xB2;
SUPERSCRIPT THREE	³	&sup3;	&#179;	&#xB3;
LEFT ANGLE BRACKET	〈	&lang;	&#9001;	&#x2329;
RIGHT ANGLE BRACKET	〉	&rang;	&#9002;	&#x232A;
LEFT CEILING BRACKET	⌈	&lceil;	&#8968;	&#x2308;
RIGHT CEILING BRACKET	⌉	&rceil;	&#8969;	&#x2309;
LEFT FLOOR BRACKET	⌊	&lceil;	&#8970;	&#x230A;
RIGHT FLOOR BRACKET	⌋	&rceil;	&#8971;	&#x230B;
CIRCLED PLUS (Direct Sum)	⊕	&oplus;	&#8853;	&#x2295
CIRCLED TIMES (Vector Product)	⊗	&otimes;	&#8855;	&#x2297

Superscript Chart（上标）

Character Name	Character	Num  Entity	Hex  Entity
SUPERSCRIPT ZERO	⁰	⁰	&#x2070
SUPERSCRIPT ONE  Entity Code = ¹	¹	¹	&#x00B9
SUPERSCRIPT TWO  Entity Code = ²	²	²	&#x00B2
SUPERSCRIPT THREE  Entity Code = ³	³	³	&#x00B3
SUPERSCRIPT FOUR	⁴	⁴	&#x2074
SUPERSCRIPT FIVE	⁵	⁵	&#x2075
SUPERSCRIPT SIX	⁶	⁶	&#x2076
SUPERSCRIPT SEVEN	⁷	⁷	&#x2077
SUPERSCRIPT EIGHT	⁸	⁸	&#x2078
SUPERSCRIPT NINE	⁹	⁹	&#x2079
SUPERSCRIPT PLUS SIGN	⁺	⁺	&#x207A
SUPERSCRIPT MINUS	⁻	⁻	&#x207B
SUPERSCRIPT EQUALS SIGN	⁼	⁼	&#x207C
SUPERSCRIPT LEFT PARENTHESIS	⁽	⁽	&#x207D
SUPERSCRIPT RIGHT PARENTHESIS	⁾	⁾	&#x207E
SUPERSCRIPT LATIN SMALL LETTER I	ⁱ	ⁱ	&#x2071
SUPERSCRIPT LATIN SMALL LETTER N	ⁿ	ⁿ	&#x207F

 

Subscript Codes（下标）

Character Name	Character	Num  Entity	Hex  Entity
SUBSCRIPT ZERO	₀	₀	&#x2080
SUBSCRIPT ONE	₁	₁	&#x2081
SUBSCRIPT TWO	₂	₂	&#x2082
SUBSCRIPT THREE	₃	₃	&#x2083
SUBSCRIPT FOUR	₄	₄	&#x2084
SUBSCRIPT FIVE	₅	₅	&#x2085
SUBSCRIPT SIX	₆	₆	&#x2086
SUBSCRIPT SEVEN	₇	₇	&#x2087
SUBSCRIPT EIGHT	₈	₈	&#x2088
SUBSCRIPT NINE	₉	₉	&#x2089
SUBSCRIPT PLUS SIGN	₊	₊	&#x208A
SUBSCRIPT MINUS	₋	₋	&#x208B
SUBSCRIPT EQUALS SIGN	₌	₌	&#x208C
SUBSCRIPT LEFT PARENTHESIS	₍	₍	&#x208D
SUBSCRIPT RIGHT PARENTHESIS	₎	₎	&#x208E
LATIN SUBSCRIPT SMALL LETTER A	ₐ	ₐ	&#x2090
LATIN SUBSCRIPT SMALL LETTER E	ₑ	ₑ	&#x2091
LATIN SUBSCRIPT SMALL LETTER O	ₒ	ₒ	&#x2092
LATIN SUBSCRIPT SMALL LETTER I	ᵢ	ᵢ	&#x1D62
LATIN SUBSCRIPT SMALL LETTER R	ᵣ	ᵣ	&#x1D63
LATIN SUBSCRIPT SMALL LETTER U	ᵤ	ᵤ	&#x1D64
LATIN SUBSCRIPT SMALL LETTER V	ᵥ	ᵥ	&#x1D65
LATIN SUBSCRIPT SMALL LETTER X	ₓ	ₓ	&#x2093
GREEK SUBSCRIPT SMALL LETTER BETA	ᵦ	ᵦ	&#x1D66
GREEK SUBSCRIPT SMALL LETTER GAMMA	ᵧ	ᵧ	&#x1D67
GREEK SUBSCRIPT SMALL LETTER RHO	ᵨ	ᵨ	&#x1D68
GREEK SUBSCRIPT SMALL LETTER PHI	ᵩ	ᵩ	&#x1D69
GREEK SUBSCRIPT SMALL LETTER CHI	ᵪ	ᵪ	&#x1D6A

 

Superscript and Subscript

Check these references for other methods to implement superscript/subscript and extra fractions

• Superscript/Subscript in Microsoft Word
• Superscript/Subscript in HTML and CSS

Fractions

These codes display fractions set to be all within one line with smaller number, but they can be replaced by other ways of typing a fraction (e.g. "1/2"). 
-- means no HTML entity code exists and that a numeric code must be used.

Character Name	Character	Entity	Num  Entity	Hex  Entity
VULGAR FRACTION 1/4	¼	¼	¼	¼
VULGAR FRACTION 1/2	½	½	½	½
VULGAR FRACTION 3/4	¾	¾	¾	¾
VULGAR FRACTION 1/3	⅓	--	⅓	⅓
VULGAR FRACTION 2/3	⅔	--	⅔	⅔
VULGAR FRACTION 1/5	⅕	--	⅕	⅕
VULGAR FRACTION 2/5	⅖	--	₢	⅖
VULGAR FRACTION 3/5	⅗	--	⅗	⅗
VULGAR FRACTION 4/5	⅘	--	⅘	⅘
VULGAR FRACTION 1/6	⅙	--	⅙	⅙
VULGAR FRACTION 5/6	⅚	--	⅚	⅚
VULGAR FRACTION 1/8	⅛	--	⅛	⅛
VULGAR FRACTION 3/8	⅜	--	⅜	⅜
VULGAR FRACTION 5/8	⅝	--	⅝	⅝
VULGAR FRACTION 7/8	⅞	--	ₖ	⅞

 

Common Statistics

-- means no HTML entity code exists and that a numeric code must be used.

Character Name	Character	Entity	Num  Entity	Hex  Entity
LOWER CASE MU (Mean)	μ	μ	μ	μ
LOWER CASE SIGMA (Standard Deviation)	σ	σ	σ	σ
LOWER CASE CHI	χ	χ	χ	χ
CAPITAL PI N-ARY PRODUCT	∏	∏	∑	∑
N-ARY COPRODUCT (upside down capital pi)	∐	--	∐	&#x2210

X-Bar, P-Hat and D-Bar

Some codes like that for x̄ (X-bar) are actually a combination of two codes - the base letter x plus a code for the line above (&#772: or  ̄). Capital letter may need to be reduced in size to accomodate the placement of the combining diacritic.

Note on Safari: These symbols use combining characters and may not be correctly Safari 2 or other older browsers.

Statistical Symbol Codes

Character Name	Character	HTML Code
X-Bar (Average)	x̄	x̄
P-Hat	p̂	p̂
D-Bar	D̄	<span style="font-size:80%">D</span>&#772;

Measurement Symbols

Common Symbols

Character Name	Character	Entity	Num  Entity	Hex  Entity
DEGREE SYMBOL	°	°	°	°
MICRO MU SYMBOL	µ	µ	µ	µ
SINGLE PRIME (feet, degree minutes)	′	′	′	߰
DOUBLE PRIME (feet, degree minutes)	″	″	′	߰
PER MILLE (1/1000th)	‰	‰	‰	߮

Calculus

Common Calculus Entity Codes

Character Name	Character	Entity	Num  Entity	Hex  Entity
INTEGRAL	∫	∫	∫	∫
PARTIAL DIFFERENTIAL	∂	∂	∂	࢚
INCREMENT (Difference or capital Delta)	Δ	Δ	∆	&#x2206
NABLA (Backward Difference, Grad or upside down triangle)	∇	∇	∇	&#x2207

Additional Integral Symbols

These symbols have numeric entity codes only.

Character Name	Character	Num  Entity	Hex  Entity
DOUBLE INTEGRAL	∬	∬	&#x222C
TRIPLE INTEGRAL	∭	∭	&#x222D
QUADRUPLE INTEGRAL	⨌	⨌	&#x2A0C
CONTOUR INTEGRAL	∮	∮	&#x222E
SURFACE INTEGRAL	∯	∯	&#x222F
VOLUME INTEGRAL	∰	∰	&#x2230
CLOCKWISE INTEGRAL	∱	∱	&#x2231
ANTICCLOCKWISE INTEGRAL	⨑	⨑	&#x2A11
CLOCKWISE CONTOUR INTEGRAL	∲	∲	&#x2232
ANTICLOCKWISE CONTOUR INTEGRAL	∳	∳	&#x2233

Letter Symbols

Character Name	Character	Entity	Num  Entity	Hex  Entity
INFINITY (Sideways 8)	∞	∞	∞	∞
ALEF INFINITY SYMBOL	ℵ	ℵ	ℵ	ℵ
WEIERSTRASS POWER SET (Script Capital P)	℘	℘	℘	℘
IMAGINARY NUMBER (Blackletter I)	ℑ	ℑ	′	′
REAL NUMBER (Blackletter I)	ℜ	ℜ	′	′
DOUBLE-STRUCK REAL NUMBER (Double R)	ℝ	--	ℝ	ℝ
COMPLEX NUMBERS (Double C)	ℂ	--	ℂ	ℂ
NATURAL NUMBERS (Double N)	ℕ	--	ℕ	ℕ
PRIME NUMBERS (Double P)	ℙ	--	ℙ	ℙ
RATIONAL NUMBERS (Double Q)	ℚ	--	ℚ	ℚ
INTEGERS (Double Z)	ℤ	--	ℤ	ℤ

Character Name	Character	Entity	Num  Entity	Hex  Entity
FOR ALL (Upside-down A)	∀	∀	∀	&#x2200
COMPLEMENT (Thin C)	∁	--	∁	&#x2201
THERE EXISTS (Backwards E)	∃	∃	∃	&#x2203
THERE DOES NOT EXIST (Backwards E with slash)	∄	--	∄	&#x2204
EMPTY SET (O slash)	∅	∅	∅	&#x2205
NOT SYMBOL (Corner)	¬	¬	¬	¬
TILDE (Alternate Not Symbol)	˜	˜	--	--
LOGICAL AND (Wedge or Upside down V Symbol)	∧	∧	∧	&#x2227
LOGICAL OR (V Symbol)	∨	∨	∨	&#x2228
XOR	⊻	--	⊻	&#x22BB
NAND	⊼	--	⊼	&#x22BC
NOR	⊽	--	⊽	&#x22BD
INTERSECTION (Cap or Upside Down U)	∩	∩	∩	&#x2229
UNION (Cup or U Symbol)	∪	∪	∪	&#x222A
ELEMENT OF	∈	∈	∈	&#x2208
NOT AN ELEMENT OF	∉	∉	∉	&#x2209
SMALL ELEMENT OF	∊	--	∊	&#x220A
CONTAINS AS MEMBER	∋	∋	∋	&#x220B
DOES NOT CONTAIN AS MEMBER	∌	--	∌	&#x220C
SMALL CONTAINS AS MEMBER	∍	--	∍	&#x220D
SET MINUS	∖	--	∖	&#x2216
SUBSET OF (Sideways U with cap to left)	⊂	⊂	⊂	&#x2282
SUPERSET OF (Sideways U with cap to right)	⊃	⊃	⊃	&#x2283
NOT A SUBSET OF (Subset with Slash)	⊄	⊄	⊄	&#x2284
NOT A SUPERSET OF (Superset with slash)	⊅	--	⊅	&#x2285
SUBSET OF OR EQUAL TO (Subset with line below)	⊆	⊆	⊆	&#x2286
SUPERSET OF OR EQUAL TO (Superset with line below)	⊇	⊇	⊇	&#x2287
NEITHER A SUBSET OF NOR EQUAL TO	⊈	--	⊈	&#x2288
NEITHER A SUPERSET OF NOR EQUAL TO	⊉	--	⊉	&#x2289
SUBSET OF WITH NOT EQUAL TO	⊊	--	⊊	&#x228A
SUPERSET OF WITH NOT EQUAL TO	⊋	--	⊋	&#x228B
DIAMOND OPERATOR  (Possibility)	⋄	--	⋄	&#x22C4
ASYMPTOTICALLY EQUAL TO  One to one Correspondence	≃	--	≃	&#x2243
NOT ASYMPTOTICALLY EQUAL TO	≄	--	≄	&#x2244
MULTISET (U with arrow)	⊌	--	⊌	&#x228C
MULTISET MULTIPLICATION (U with dot in center)	⊍	--	⊍	&#x228D
MULTISET UNION (U with plus in center)	⊎	--	⊎	&#x228E
DOUBLE SUBSET	⋐	--	⋐	&#x22D0
DOUBLE SUPERSET	⋑	--	⋑	&#x22D1
DOUBLE INTERSECTION	⋒	--	⋒	&#x22D2
DOUBLE UNION	⋓	--	⋓	&#x22D3
N-ARY LOGICAL AND	⋀	--	⋀	&#x22C0
N-ARY LOGICAL OR	⋁	--	⋁	&#x22C1
N-ARY INTERSECTION&cu	⋂	--	⋂	&#x22C2
N-ARY UNION	⋃	--	⋃	&#x22C3
CURLY LOGICAL OR	⋎	--	⋎	&#x22CE
CURLY LOGICAL AND	⋏	--	⋏	&#x22CF
CIRCLED PLUS (Direct Sum)	⊕	⊕	⊕	&#x2295
CIRCLED TIMES (Vector Product)	⊗	⊗	⊗	&#x2297
CIRCLED MINUS	⊖	--	⊖	&#x2296
CIRCLED DIVISION SLASH	⊘	--	⊘	&#x2298

Other Element Of Symbols

ELEMENT OF WITH LONG HORIZONTAL STROKE	⋲	⋲	&#x22F2
ELEMENT OF WITH VERTICAL BAR AT END OF HORIZONTAL STROKE	⋳	⋳	&#x22F3
SMALL ELEMENT OF WITH VERTICAL BAR AT END OF HORIZONTAL STROKE	⋴	⋴	&#x22F4
ELEMENT OF WITH DOT ABOVE	⋵	⋵	&#x22F5
ELEMENT OF WITH OVERBAR	⋶	⋶	&#x22F6
SMALL ELEMENT OF WITH OVERBAR	⋷	⋷	&#x22F7
ELEMENT OF WITH UNDERBAR	⋸	⋸	&#x22F8
ELEMENT OF WITH TWO HORIZONTAL STROKES	⋹	⋹	&#x22F9
CONTAINS WITH LONG HORIZONTAL STROKE	⋺	⋺	&#x22FA
CONTAINS WITH VERTICAL BAR AT END OF HORIZONTAL STROKE	⋻	⋻	&#x22FB
SMALL CONTAINS WITH VERTICAL BAR AT END OF HORIZONTAL STROKE	⋼	⋼	&#x22FC
CONTAINS WITH OVERBAR	⋽	⋽	&#x22FD
SMALL CONTAINS WITH OVERBAR	⋾	⋾	&#x22FE
NOTATION BAG MEMBERSHIP	⋿	⋿	&#x22FF

Geometric Symbols

Note: The entity code for the Angle Symbol (∠) is ∠ and the code for the perpendicular angle (⊥) is⊥. 
Otherwise, these symbols have numeric codes only.

Angles and Lines

Character Name	Character	Num  Entity	Hex  Entity
RIGHT ANGLE	∟	∟	&#x221F
ANGLE  Entity Code = ∠	∠	∠	&#x2220
MEASURED ANGLE	∡	∡	&#x2221
SPHERICAL ANGLE	∢	∢	&#x2222
DIVIDES	∣	∣	&#x2223
DOES NOT DIVIDE	∤	∤	&#x2224
PARALLEL TO	∥	∥	&#x2225
NOT PARALLEL TO	∦	∦	&#x2226
RIGHT ANGLE WITH ARC	⊾	⊾	&#x22BE
RIGHT TRIANGLE	⊿	⊿	&#x22BF
UP TACK (Perpendicular)  Entity Code = ⊥	⊥	⊥	&#x22A5
RIGHT TACK	⊢	⊢	&#x22A2
LEFT TACK	⊣	⊣	&#x22A3
DOWN TACK	⊤	⊤	&#x22A4

Logical Proofs

Note: The entity code for the Therefore Symbol (∴) is ∴. Otherwise, these symbols have numeric codes only.

Character Name	Character	Num  Entity	Hex  Entity
THEREFORE (Triangular Dots)  Entity Code = ∴	∴	∴	∴
BECAUSE (Upside down Triangular Dots)	∵	∵	&#x2235
PROPORTIONAL TO  Entity Code = ∝	∝	∝	&#x221D
END OF PROOF (solid rectangle)	∎	∎	&#x220E

 

Common Equivalence and Proportion Operators

Common Equivalence Operators

Character Name	Character	Entity	Num  Entity	Hex  Entity
NOT EQUALS	≠	≠	≠	≠
APPROXIMATELY EQUAL	≅	≅	≅	≅
ALMOST EQUAL (ASYMPTOTIC)	≈	≈	≈	≈
NOT ALMOST EQUAL TO	≉	--	≉	&#x2249
TILDE SIMILAR TO	∼	∼	∼	∼
IDENTICAL TO (three lines)	≡	≡	≡	≡
NOT IDENTICAL TO	≢	--	≢	&#x2262

Other Equivalence Symbols

STRICTLY EQUIVALENT TO	≣	≣	&#x2263
NOT IDENTICAL TO	≢	≢	&#x2262
LESS-THAN OVER EQUAL TO	≦	≦	&#x2266
GREATER-THAN OVER EQUAL TO	≧	≧	&#x2267
LESS-THAN BUT NOT EQUAL TO	≨	≨	&#x2268
GREATER-THAN BUT NOT EQUAL TO	≩	≩	&#x2269
MUCH LESS-THAN	≪	≪	&#x226A
MUCH GREATER-THAN	≫	≫	&#x226B
BETWEEN	≬	≬	&#x226C
NOT EQUIVALENT TO	≭	≭	&#x226D
NOT LESS-THAN	≮	≮	&#x226E
NOT GREATER-THAN	≯	≯	&#x226F
NEITHER LESS-THAN NOR EQUAL TO	≰	≰	&#x2270
NEITHER GREATER-THAN NOR EQUAL TO	≱	≱	&#x2271
LESS-THAN OR EQUIVALENT TO	≲	≲	&#x2272
GREATER-THAN OR EQUIVALENT TO	≳	≳	&#x2273
NEITHER LESS-THAN NOR EQUIVALENT TO	≴	≴	&#x2274
NEITHER GREATER-THAN NOR EQUIVALENT TO	≵	≵	&#x2275
LESS-THAN OR GREATER-THAN	≶	≶	&#x2276
GREATER-THAN OR LESS-THAN	≷	≷	&#x2277
NEITHER LESS-THAN NOR GREATERTHAN	≸	≸	&#x2278
NEITHER GREATER-THAN NOR LESSTHAN	≹	≹	&#x2279
NOT TILDE	≁	≁	&#x2241
MINUS TILDE	≂	≂	&#x2242
ASYMPTOTICALLY EQUAL TO	≃	≃	&#x2243
NOT ASYMPTOTICALLY EQUAL TO	≄	≄	&#x2244
APPROXIMATELY BUT NOT ACTUALLY EQUAL TO	≆	≆	&#x2246
NEITHER APPROXIMATELY NOR ACTUALLY EQUAL TO	≇	≇	&#x2247
NOT ALMOST EQUAL TO	≉	≉	&#x2249
ALMOST EQUAL OR EQUAL TO	≊	≊	&#x224A
TRIPLE TILDE	≋	≋	&#x224B
ALL EQUAL TO	≌	≌	&#x224C

Unicode对照表参考了： http://blog.csdn.net/snowdust/article/details/5895593