公司同事要交畢業論文，說是要做一個小項目交差。 開始我給這個同事SHOW 了一下 LINQ, 同事說，LINQ 看起來代碼很少（其實LINQ代碼不少，只是自己寫的那部分少了而已！數據庫生成實體的代碼很多的！），說要代碼多點的！（忽悠老師不懂唄！），我說行！我就給他推薦了CODEPLUS,CODESMITH以及DBToCode的代碼生成器，用代碼生成器生成代碼，那樣看起來代碼也多，洋氣！這位同事滿意而去！不過第二天，其想法變了，說要做個代碼生成器，且要基于數據庫的，可是其對數據庫不熟悉，我說給其寫個Oracle，可是人家更不熟悉Oracle啊！暈倒，我說救人救到底，送佛送到西！我悶頭花了半個小時寫個個獲取SQL SERVER 2005數據庫的全部信息，是全部數據庫，如今單個數據庫不是什么問題了！嘿嘿！聽起來懸乎懸乎的吧，哈哈，不蒙大家了，上代碼：

Code
<%@?Page?Language="C#"?%>

<%@?Import?Namespace="System.Data"?%>

<%@?Import?Namespace="System.Data.SqlClient"?%>

<%@?Import?Namespace="?System.Collections.Generic"?%>

<!DOCTYPE?html?PUBLIC?"-//W3C//DTD?XHTML?1.0?Transitional//EN"?"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

?

<script?runat="server">

????string?connectionString?=?"Data?Source=.;Initial?Catalog=master;Persist?Security?Info=True;User?ID=sa;Password=sa";

????protected?void?Page_Load(object?sender,?EventArgs?e)

????{

????????List<string>?DatabasesNameList?=?GetDatabasesName();

????????foreach?(string?DatabaseName?in?DatabasesNameList)

????????{

????????????Response.Write("Database?Name:?");

????????????Response.Write(DatabaseName);?Response.Write("<br?/>");

????????????Response.Write("----------------------------------------------------------------------------------------------------------");?Response.Write("<br?/>");

????????????Response.Write("----------------------------------------------------------------------------------------------------------");

????????????Response.Write("<br?/>");

????????????List<string>?TablesNameslist?=?GetTablesName(DatabaseName);

????????????foreach?(string?TableName?in?TablesNameslist)

????????????{

????????????????Response.Write("Table?Name:?");

????????????????Response.Write(TableName);

????????????????Response.Write("<br?/>");

????????????????DisplayTables(TableName,?DatabaseName);

????????????????Response.Write("<br?/>");?Response.Write("<br?/>");?Response.Write("<br?/>");

????????????}

????????????Response.Write("<br?/>");?Response.Write("<br?/>");?Response.Write("<br?/>");

????????}

????}

????void?DisplayTables(string?tablename,?string?databasename)

????{

????????string?connectionString?=?GetDatabaseConnectionString(databasename);

????????string?Query?=?"SELECT?*?FROM?["?+?tablename?+?"]";

????????SqlConnection?conn?=?new?SqlConnection(connectionString);

????????SqlDataAdapter?sda?=?new?SqlDataAdapter(Query,?conn);

????????conn.Open();

????????DataSet?ds?=?new?DataSet();

????????sda.Fill(ds,?tablename);

????????DataTable?tblSchema?=?ds.Tables[tablename];

????????conn.Close();

?

????????Response.Write("Column?Name?------???Data?Type?------?Unique?------?Auto?Increment?------?Allow?DBNull");

????????Response.Write("<br?/>");

?

????????foreach?(DataColumn?dc?in?tblSchema.Columns)

????????{

????????????string?DatabaseInfo?=?dc.ColumnName?+?"------"?+?dc.DataType?+?"------"?+?dc.Unique?+?"------"?+?dc.AutoIncrement?+?"------"?+?dc.AllowDBNull;

????????????Response.Write(DatabaseInfo);

????????????Response.Write("<br?/>");

????????}

????}

?

????string?GetDatabaseConnectionString(string?DatabaseName)

????{

????????string?Res?=?"Data?Source=.;Initial?Catalog?=?DatabaseName?;Persist?Security?Info=True;User?ID=sa;Password=sa";

????????Res?=?Res.Replace("DatabaseName",?DatabaseName);

????????return?Res;

????}

?

????List<string>?GetTablesName(string?DatabaseName)

????{

????????string?connectionString?=?GetDatabaseConnectionString(DatabaseName);

????????DataTable?tables?=?new?DataTable();

????????using?(SqlConnection?connection?=?new?SqlConnection(connectionString))

????????{

????????????SqlCommand?command?=?connection.CreateCommand();

????????????command.CommandText?=?"select?table_name?as?Name?from?INFORMATION_SCHEMA.Tables?where?TABLE_TYPE?=?'BASE?TABLE'";

????????????connection.Open();

????????????tables.Load(command.ExecuteReader(CommandBehavior.CloseConnection));

????????}

????????List<string>?list?=?new?List<string>();

????????foreach?(DataRow?row?in?tables.Rows)

????????{

????????????list.Add(row[0].ToString());

????????}

????????return?list;

????}

?

?

????List<string>?GetDatabasesName()

????{

????????DataTable?tables?=?new?DataTable();

????????using?(SqlConnection?connection?=?new?SqlConnection(connectionString))

????????{

????????????SqlCommand?command?=?connection.CreateCommand();

????????????command.CommandText?=?"select?name?from?master..sysdatabases";

????????????connection.Open();

????????????tables.Load(command.ExecuteReader(CommandBehavior.CloseConnection));

????????}

????????List<string>?list?=?new?List<string>();

????????foreach?(DataRow?row?in?tables.Rows)

????????{

????????????list.Add(row[0].ToString());

????????}

????????//?We?can?not?visit?the?system?databases

????????list.Remove("msdb");

????????list.Remove("master");

????????list.Remove("tempdb");

????????list.Remove("model");

????????list.Remove("ReportServer");

????????list.Remove("ReportServerTempDB");

????????list.Remove("aspnetdb");

?

????????return?list;

????}???

????

????

</script>

?

<html?xmlns="http://www.w3.org/1999/xhtml">

<head?runat="server">

????<title>Visit?Database</title>

</head>

<body>

????<form?id="form1"?runat="server">

????</form>

</body>

</html>

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