存储过程生成POCO
下面我们演示使用T-SQL写的一个存储过程，生成C#的POCO代码：
CREATE PROCEDURE usp_TableToClass
/*
Generates C# class code for a table
and fields/properties for each column.
Run as "Results to Text" or "Results to File" (not Grid)
Example: EXEC usp_TableToClass 'MyTable'
*/
@table_name SYSNAME
AS
SET NOCOUNT ON
DECLARE @temp TABLE
(
sort INT,
code TEXT
)
INSERT INTO @temp
SELECT 1, 'public class ' + @table_name + CHAR(13) + CHAR(10) + '{'
INSERT INTO @temp
SELECT 2, CHAR(13) + CHAR(10) + '#region Constructors' + CHAR(13) + CHAR(10)
INSERT INTO @temp
SELECT 3, CHAR(9) + 'public ' + @table_name + '()'
+ CHAR(13) + CHAR(10) + CHAR(9) + '{'
+ CHAR(13) + CHAR(10) + CHAR(9) + '}'
INSERT INTO @temp
SELECT 4, '#endregion' + CHAR(13) + CHAR(10)
INSERT INTO @temp
SELECT 5, '#region Private Fields' + CHAR(13) + CHAR(10)
INSERT INTO @temp
SELECT 6, CHAR(9) + 'private ' +
CASE
WHEN DATA_TYPE LIKE '%CHAR%' THEN 'string '
WHEN DATA_TYPE LIKE '%INT%' THEN 'int '
WHEN DATA_TYPE LIKE '%DATETIME%' THEN 'DateTime '
WHEN DATA_TYPE LIKE '%BINARY%' THEN 'byte[] '
WHEN DATA_TYPE = 'BIT' THEN 'bool '
WHEN DATA_TYPE LIKE '%TEXT%' THEN 'string '
ELSE 'object '
END + '_' + COLUMN_NAME + ';' + CHAR(9)
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = @table_name
ORDER BY ORDINAL_POSITION
INSERT INTO @temp
SELECT 7, '#endregion' +
CHAR(13) + CHAR(10)
INSERT INTO @temp
SELECT 8, '#region Public Properties' + CHAR(13) + CHAR(10)
INSERT INTO @temp
SELECT 9, CHAR(9) + 'public ' +
CASE
WHEN DATA_TYPE LIKE '%CHAR%' THEN 'string '
WHEN DATA_TYPE LIKE '%INT%' THEN 'int '
WHEN DATA_TYPE LIKE '%DATETIME%' THEN 'DateTime '
WHEN DATA_TYPE LIKE '%BINARY%' THEN 'byte[] '
WHEN DATA_TYPE = 'BIT' THEN 'bool '
WHEN DATA_TYPE LIKE '%TEXT%' THEN 'string '
ELSE 'object '
END + COLUMN_NAME +
CHAR(13) + CHAR(10) + CHAR(9) + '{' +
CHAR(13) + CHAR(10) + CHAR(9) + CHAR(9) +
'get { return _' + COLUMN_NAME + '; }' +
CHAR(13) + CHAR(10) + CHAR(9) + CHAR(9) +
'set { _' + COLUMN_NAME + ' = value; }' +
CHAR(13) + CHAR(10) + CHAR(9) + '}'
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = @table_name
ORDER BY ORDINAL_POSITION
INSERT INTO @temp
SELECT 10, '#endregion' +
CHAR(13) + CHAR(10) + '}'
SELECT code FROM @temp
ORDER BY sort
在DB中创建好后，怎么用呢？例如下面我们以 aspnet_Membership表为例：
EXEC usp_TableToClass aspnet_Membership
接着生成这样的CSharp代码，不包含行号：
1: public class aspnet_Membership
2: {
3:
4: #region Constructors
5: public aspnet_Membership()
6: {
7: }
8: #endregion
9: #region Private Fields
10: private object _ApplicationId;
11: private object _UserId;
12: private string _Password;
13: private int _PasswordFormat;
14: private string _PasswordSalt;
15: private string _MobilePIN;
16: private string _Email;
17: private string _LoweredEmail;
18: private string _PasswordQuestion;
19: private string _PasswordAnswer;
20: private bool _IsApproved;
21: private bool _IsLockedOut;
22: private DateTime _CreateDate;
23: private DateTime _LastLoginDate;
24: private DateTime _LastPasswordChangedDate;
25: private DateTime _LastLockoutDate;
26: private int _FailedPasswordAttemptCount;
27: private DateTime _FailedPasswordAttemptWindowStart;
28: private int _FailedPasswordAnswerAttemptCount;
29: private DateTime _FailedPasswordAnswerAttemptWindowStart;
30: private string _Comment;
31: #endregion
32: #region Public Properties
33: public object ApplicationId
34: {
35: get { return _ApplicationId; }
36: set { _ApplicationId = value; }
37: }
38: public object UserId
39: {
40: get { return _UserId; }
41: set { _UserId = value; }
42: }
43: public string Password
44: {
45: get { return _Password; }
46: set { _Password = value; }
47: }
48: public int PasswordFormat
49: {
50: get { return _PasswordFormat; }
51: set { _PasswordFormat = value; }
52: }
53: public string PasswordSalt
54: {
55: get { return _PasswordSalt; }
56: set { _PasswordSalt = value; }
57: }
58: public string MobilePIN
59: {
60: get { return _MobilePIN; }
61: set { _MobilePIN = value; }
62: }
63: public string Email
64: {
65: get { return _Email; }
66: set { _Email = value; }
67: }
68: public string LoweredEmail
69: {
70: get { return _LoweredEmail; }
71: set { _LoweredEmail = value; }
72: }
73: public string PasswordQuestion
74: {
75: get { return _PasswordQuestion; }
76: set { _PasswordQuestion = value; }
77: }
78: public string PasswordAnswer
79: {
80: get { return _PasswordAnswer; }
81: set { _PasswordAnswer = value; }
82: }
83: public bool IsApproved
84: {
85: get { return _IsApproved; }
86: set { _IsApproved = value; }
87: }
88: public bool IsLockedOut
89: {
90: get { return _IsLockedOut; }
91: set { _IsLockedOut = value; }
92: }
93: public DateTime CreateDate
94: {
95: get { return _CreateDate; }
96: set { _CreateDate = value; }
97: }
98: public DateTime LastLoginDate
99: {
100: get { return _LastLoginDate; }
101: set { _LastLoginDate = value; }
102: }
103: public DateTime LastPasswordChangedDate
104: {
105: get { return _LastPasswordChangedDate; }
106: set { _LastPasswordChangedDate = value; }
107: }
108: public DateTime LastLockoutDate
109: {
110: get { return _LastLockoutDate; }
111: set { _LastLockoutDate = value; }
112: }
113: public int FailedPasswordAttemptCount
114: {
115: get { return _FailedPasswordAttemptCount; }
116: set { _FailedPasswordAttemptCount = value; }
117: }
118: public DateTime FailedPasswordAttemptWindowStart
119: {
120: get { return _FailedPasswordAttemptWindowStart; }
121: set { _FailedPasswordAttemptWindowStart = value; }
122: }
123: public int FailedPasswordAnswerAttemptCount
124: {
125: get { return _FailedPasswordAnswerAttemptCount; }
126: set { _FailedPasswordAnswerAttemptCount = value; }
127: }
128: public DateTime FailedPasswordAnswerAttemptWindowStart
129: {
130: get { return _FailedPasswordAnswerAttemptWindowStart; }
131: set { _FailedPasswordAnswerAttemptWindowStart = value; }
132: }
133: public string Comment
134: {
135: get { return _Comment; }
136: set { _Comment = value; }
137: }
138: #endregion
139: }
140:
这篇文章只是抛砖引玉，你可以创建更强大的功能SP, 或许这是一个思路。
希望对您开发有帮助。
作者：Petter Liu
出处：http://www.cnblogs.com/wintersun/
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该文章也同时发布在我的独立博客中-Petter Liu Blog。