编译.dll文件遇到的问题!!!!!

[wxyzy]

建一个类如下
Imports System
Imports System.Data.OleDb
Public Class oledb

Function condb(ByVal constr, ByVal sql)
Dim con As OleDbConnection
Dim dad As OleDbDataAdapter
Dim dst As New DataSet()
con = New OleDbConnection(constr)
dad = New OleDbDataAdapter(sql, con)
dad.Fill(dst, "table")

End Function

End Class
编译保错! 没有定义dataset
想写一个连接数据库的公共类 ，每次都调这个类中的方法 如何写?

是不是名称空间的问题???

[wxyzy]

为什么要用System.Xml.dll

[saucer]

DataSet is in System.Data:

Imports System
Imports System.Data
Imports System.Data.OleDb

[eshusheng]

加 Imports System.Data

[wxyzy]

不行呀，还报那个错

我是这样编译的:
C:\WINNT\Microsoft.NET\Framework\v1.0.3705\vbc /r:system.dll,system.data.dll C:\Inetpub\wwwroot\ex1\oledb.vb

[saucer]

try

C:\WINNT\Microsoft.NET\Framework\v1.0.3705\vbc /t:library /r:system.dll,system.data.dll,System.Xml.dll C:\Inetpub\wwwroot\ex1\oledb.vb

[goody9807]

Imports System
Imports System.Data
Imports System.Data.OleDb
Public Class oledb

Function condb(ByVal constr, ByVal sql)
Dim con As OleDbConnection
Dim dad As OleDbDataAdapter
Dim dst As New DataSet()
con = New OleDbConnection(constr)
dad = New OleDbDataAdapter(sql, con)
dad.Fill(dst, "table")

End Function

End Class





C:\WINNT\Microsoft.NET\Framework\v1.0.3705\vbc /t:library /r:system.dll,system.data.dll,System.Xml.dll C:\Inetpub\wwwroot\ex1\oledb.vb