【原】获取数据库（SQL SERVER 2005）的所有信息 Get all database information from SQL Server 2005
公司同事要交毕业论文，说是要做一个小项目交差。 开始我给这个同事SHOW 了一下 LINQ, 同事说，LINQ 看起来代码很少（其实LINQ代码不少，只是自己写的那部分少了而已！数据库生成实体的代码很多的！），说要代码多点的！（忽悠老师不懂呗！），我说行！我就给他推荐了CODEPLUS,CODESMITH以及DBToCode的代码生成器，用代码生成器生成代码，那样看起来代码也多，洋气！这位同事满意而去！不过第二天，其想法变了，说要做个代码生成器，且要基于数据库的，可是其对数据库不熟悉，我说给其写个Oracle，可是人家更不熟悉Oracle啊！晕倒，我说救人救到底，送佛送到西！我闷头花了半个小时写个个获取SQL SERVER 2005数据库的全部信息，是全部数据库，如今单个数据库不是什么问题了！嘿嘿！听起来悬乎悬乎的吧，哈哈，不蒙大家了，上代码：Code
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 DatabasesNameList = GetDatabasesName();
foreach (string DatabaseName in DatabasesNameList)
{
Response.Write("Database Name: ");
Response.Write(DatabaseName); Response.Write("");
Response.Write("----------------------------------------------------------------------------------------------------------"); Response.Write("");
Response.Write("----------------------------------------------------------------------------------------------------------");
Response.Write("");
List TablesNameslist = GetTablesName(DatabaseName);
foreach (string TableName in TablesNameslist)
{
Response.Write("Table Name: ");
Response.Write(TableName);
Response.Write("");
DisplayTables(TableName, DatabaseName);
Response.Write(""); Response.Write(""); Response.Write("");
}
Response.Write(""); Response.Write(""); Response.Write("");
}
}
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;
conn.Close();
Response.Write("Column Name ------ Data Type ------ Unique ------ Auto Increment ------ Allow DBNull");
Response.Write("");
foreach (DataColumn dc in tblSchema.Columns)
{
string DatabaseInfo = dc.ColumnName + "------" + dc.DataType + "------" + dc.Unique + "------" + dc.AutoIncrement + "------" + dc.AllowDBNull;
Response.Write(DatabaseInfo);
Response.Write("");
}
}
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 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 list = new List();
foreach (DataRow row in tables.Rows)
{
list.Add(row.ToString());
}
return list;
}
List 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 list = new List();
foreach (DataRow row in tables.Rows)
{
list.Add(row.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;
}
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