ADSI，使用ASP来实现通用的对数据库控制编程

2022-07-15 80酷酷网 80kuku.com

　　编程|控制|数据|数据库非常有价值的代码，下面的代码是使用ADSI 的对象数据库概念编制成的，只要你理解了我在前面文章说的东西，下面的代码只不过是ADSI牛刀小试而已只要有了下面这个思路，以后不论是对付什么数据库，就是不知道数据库的结构也不用害怕了。
<%
'--- define DSN names in array
database_list=Array("dsn_1","dsn_2","dsn_3")
'--- enable deleting table? -- Carefull!!
strEnableDeleteTable = False
'---- end declaration

'---- do not change code below this line ---------------------------------------------
field_value=Array("Integer","Double","char(255)","Memo","Date","Currency","YesNo")
field_display=Array("Integer","Number","Text","Memo","Date/Time","Currency","Yes/No")

dsn_name = Request("DatabaseName")
If Not dsn_name = "" Then
Set con = Server.CreateObject("ADODB.Connection")
con.Open "DSN=" & dsn_name
End If
table_name = Request("TableName")

If Request("AddNewTable")<>"" Then
If Request("NewTableName") <> "" Then
SQL = "CREATE TABLE " & Request("NewTableName") & " (fldAuto Counter)"
con.Execute(SQL)
End If
End If
If Request("AddNewField")<>"" Then
If request("NewFieldName") <> "" Then
SQL = "ALTER TABLE " & table_name & " ADD " & request("NewFieldName") & " " & request("NewFieldType") & " NULL"
con.Execute(SQL)
End If
End If
If Request("DeleteTable")<>"" Then
SQL = "DROP TABLE " & Request("TableName")
Con.Execute(SQL)
End If
If Request("DeleteColumn")<>"" Then
For Each item In Request("DeleteCol")
SQL = "ALTER TABLE " & Request("TableName") & " DROP " & item
con.Execute(SQL)
Next
End If
'----- file name--------------------------------------------------------
file = Request.ServerVariables("SCRIPT_NAME")
file = strReverse(file)
pos = Instr(file,"/")
file = Left(file, pos-1)
file = strReverse(file)
%>

<%
response.write "<!DOCTYPE HTML PUBLIC ""-//W3C//DTD HTML 3.2 Final//EN"">"
response.write "<HTML><HEAD><TITLE>Database Control</TITLE></HEAD>"
response.write "<BODY bgcolor=""#FFFFFF"">

<center>"

'------------------------------------------------------------
response.write "<form action=""" & file & """ method=post>"
response.write "<b><font face=verdana size=3 color=""#008080""><u>Total Database Control</u></font></b>

"
response.write "<font face=Verdana,Arial size=2><b>Database Name: </b></font>"
response.write "<select name=""databasename"">"
For i = 0 to uBound(database_list)
If database_list(i) = Request("databasename") Then
response.write "<option value=""" & database_list(i) & """ selected>" & database_list(i)
Else
response.write "<option value=""" & database_list(i) & """>" & database_list(i)
End If
Next
response.write "</select> "
response.write "<input type=submit name=GoDatabase value=go>"
response.write "<hr></form>"
'-------------------------------------------------------------
response.write "<form action=""" & file & "?DatabaseName=" & Server.URLEncode(dsn_name) & """ method=post>"

If dsn_name<>"" Then
Set table = con.OpenSchema (20)
response.write "<font face=Verdana,Arial size=2>Table Names in " & dsn_name & ": </font><SELECT NAME=TableName>"
While Not table.EOF
tblName = table("Table_Name")
If Left(tblName,4) <> "MSys" AND Left(tblName,3) <> "sys" AND Left(tblName,4) <> "RTbl" Then
If tblName = table_name Then
response.write "<OPTION VALUE=""" & tblName & """ selected>" & tblName
Else
response.write "<OPTION VALUE=""" & tblName & """>" & tblName
End If
End If
table.MoveNext
Wend
response.write "</SELECT>"
response.write "<INPUT type=submit name=table value=go>"
If strEnableDeleteTable = True Then
response.write " <input type=submit name=DeleteTable value=delete>"
End If
response.write "</form>"
response.write "<form action=""" & file & "?DatabaseName=" & Server.URLEncode(dsn_name) & """ method=post>"
response.write "<table><tr>"
response.write "<td colspan=2><font face=Verdana,Arial size=2 color=""#ff0000"">Add New Table into " & dsn_name & "</font></td>"
response.write "</tr><tr>"
response.write "<th><font face=Verdana,Arial size=2>Table Name:</font></th>"
response.write "<td><input type=text name=NewTableName></td>"
response.write "</tr><tr>"
response.write "<td colspan=2 align=center><input type=submit name=AddNewTable value=""Add New Table""></td></tr></table>"
response.write "</form><hr>"
End If

If table_name <> "" AND Request("DeleteTable")="" Then
response.write "<form action=""" & file & "?DatabaseName=" & Server.URLEncode(dsn_name) & "&TableName=" & table_name & """ method=post>"
response.write "<table border=2 align=center cellpadding=2 cellspacing=2>"
response.write "<tr>"
response.write "<th colspan=4 align=left><font face=Verdana,Arial size=3 color=teal>" & table_name & "</font></th>"
response.write "</tr><tr><th><font face=Verdana,Arial size=2>Field Name</font></th>"
response.write "<th><font face=Verdana,Arial size=2>Field Size</font></th>"
response.write "<th><font face=Verdana,Arial size=2>Field DataType</font></th>"
response.write "<th><font face=Verdana,Arial size=2>Delete</font></th></tr>"

SQL = "SELECT * FROM " & table_name
Set rs = con.Execute(SQL)
For each fldName in rs.Fields
response.write "<tr>"
response.write "<td><font face=Verdana,Arial size=2 color=""#000000"">" & fldName.Name & "</font></td>"
response.write "<td><font face=Verdana,Arial size=2 color=""#000000"">" & fldName.DefinedSize & "</font></td>"
response.write "<td><font face=Verdana,Arial size=2 color=""#000000"">" & GetTypeName(fldName.Type) & "</font></td>"
response.write "<td align=center><input type=checkbox name=DeleteCol value=""" & fldName.Name & """></td>"
response.write "</tr>"
Next
response.write "<tr><td colspan=4 align=center><input type=submit name=DeleteColumn value=""Delete Selected Column""></td></tr>"
response.write "</table>"
response.write "<table><tr>"
response.write "<td colspan=2><font face=Verdana,Arial size=2 color=""#ff0000"">Add New Field into " & table_name & "</font></td>"
response.write "</tr><tr>"
response.write "<th><font face=Verdana,Arial size=2>Field Name:</font></th>"
response.write "<td><input type=text name=""NewFieldName""></td>"
response.write "</tr><tr>"
response.write "<th><font face=Verdana,Arial size=2>Field Type:</font></th>"
response.write "<td><select name=""NewFieldType"">"
For i = 0 to uBound(field_value)
response.write "<option value=""" & field_value(i) & """>" & field_display(i)
Next
response.write "</select></td></tr>"
response.write "<tr><td colspan=2 align=center><input type=submit name=AddNewField value=""Add New Field""></td></tr></table>"
response.write "</form>"
End If
response.write "</center></BODY></HTML>"

Function GetTypeName(id)
Select Case id
Case "3"
GetTypeName = "Number"
Case "200"
GetTypeName = "Text"
Case "129"
GetTypeName = "Text"
Case "201"
GetTypeName = "Memo"
Case "6"
GetTypeName = "Currency"
Case "11"
GetTypeName = "Yes/No"
Case "5"
GetTypeName = "Number"
Case "7", "133","134","135"
GetTypeName = "Date/Time"
Case Else
GetTypeName = id
End Select
End Function

Sub SelectDataType(it)
response.write "<SELECT NAME=EditColName>"
For i = 0 to UBOUND(field_value)
If field_display(i) = it Then
response.write "<option value=""" & field_value(i) & """ selected>" & field_display(i)
Else
response.write "<option value=""" & field_value(i) & """>" & field_display(i)
End If
Next
response.write "</Select>"
End Sub
%>