连接SQL Server的公共类VB.NET

作者: 出处:51CTO.com整理　 (  ) 砖  (  ) 好  评论 ( ) 条 　进入论坛

更新时间：2005-11-30 14:55
关 键 词：.net  SQL  SQL Server
阅读提示：本文介绍连接SQL SERVER的公共类VB.NET。

*************************************************************************
'//开始日期：2002年5月27日

'//结束日期：2002年5月27日

'***********************************************************************

Option Explicit On

'Option Strict On

'//***********************************************************************
Imports System.Data.SqlClient

'//*************************************************************************

'//Begin defined namespace

Namespace Sunerp.CommClass.Comm

'//Defined Structure PublicApplicationVal

'//Structure descriptoin

'//本结构存取 数据库服务器名（Dbserver）、数据库用户ID（UserId）、

'//数据库用户密码（UserPWD）、数据库名（Dbase），为联接数据库提供参数。

'//为了满足某些简单查询的需要，提供了扩展的变量 常用表名（DBTable）、

'//查询字段名（QueryFieldName）、查询字段值

'//Begin define Structure PublicApplicationVal

Public Structure PublicApplicationVal

' Public Dbserver, UserId UserPWD Dbase DBTable Account.

Public Dbserver As String

Public UserId As String

Public UserPWD As String

Public Dbase As String

Public DBTable As String

Public QueryFieldVale As String

Public QueryFieldName As String

End Structure

'//End define Structure PublicApplicationVal

'//********************************************************************

'//Begin defined Class

Public Class DBaseBindComm

''*****************************************************************

''//**定义连接SQL Server Database的通用函数**//

'//本函数创建一个到指定数据库的连接对象 SqlConnection

'//本函数有1个参数，IPublicApplication 为公共数据结构 PublicApplicationVal，

'//Begin define Function LinkedSqlServer

Public Overloads Function LinkedSqlServer() As System.Data.SqlClient.SqlConnection

Dim strconn As String

Dim conn As New SqlConnection()

strconn = "server=" & "erp" & _

";user id=" & "erpsa" & _

";password=" & "erpsa" & _

";database=" & "erpdata" & ";"

Try

conn = New SqlConnection(strconn)

conn.Open()

StateVal = True

LinkedSqlServer = conn

Catch ex As Exception

' MsgBox(ex.ToString)

StateVal = False

LinkedSqlServer = Nothing

Exit Function

End Try

End Function

''End defined LinkedSqlServer

''***********************************************************************

''//**定义连接SQL Server Database的通用函数**//

'//本函数创建一个到指定数据库的连接对象 SqlConnection

'//本函数有1个参数，IPublicApplication 为公共数据结构 PublicApplicationVal，

'//Begin define Function LinkedSqlServer

Public Overloads Function LinkedSqlServer( _

ByVal IPublicApplication As PublicApplicationVal) _

As System.Data.SqlClient.SqlConnection

Dim strconn As String

Dim conn As New SqlConnection()

strconn = "server=" & IPublicApplication.Dbserver & _

";user id=" & IPublicApplication.UserId & _

";password=" & IPublicApplication.UserPWD & _

";database=" & IPublicApplication.Dbase & ";"

Try

conn = New SqlConnection(strconn)

conn.Open()

StateVal = True

LinkedSqlServer = conn

Catch ex As Exception

' MsgBox(ex.ToString)

StateVal = False

LinkedSqlServer = Nothing

Exit Function

End Try

End Function

''End defined LinkedSqlServer

''**************************************************************

''定义类DBaseBindComm的ReadOnly属性State（创建连接的状态）

''True(创建成功），False（创建失败）

Private StateVal As Boolean

Public ReadOnly Property State() As Boolean

Get

Return StateVal

End Get

End Property

End Class

Public Class OrganComm

'//Defined Structure PublicOrganIDStructure

'//Structure descriptoin

'//本结构存取 企业组织机构Id

'//顶层（DeptTopID）、一级（DeptMidId），二级ID（DeptLowId）

'//Begin define Structure PublicOrganIDStructure

Public Structure PublicOrganIDStructure

Public DeptTopID As String

Public DeptMidId As String

Public DeptLowId As String

End Structure

'//End define Structure PublicOrganIDStructure

'//******************************************************************

''//**定义连接SQL Server Database的通用函数**//

'//本函数创建一个到指定数据库的连接对象 SqlConnection

'//本函数有1个参数，IPublicApplication 为公共数据结构 PublicApplicationVal，

'//Begin define Function IParseDeptOrgid

Public Function IParseDeptOrgid(ByVal IDeptOrgid As String) As PublicOrganIDStructure

Dim OrganID As New PublicOrganIDStructure()

Dim Orgid As String

IDeptOrgid = Trim(IDeptOrgid)

Orgid = Microsoft.VisualBasic.Left(Trim(IDeptOrgid), 12)

OrganID.DeptTopID = Microsoft.VisualBasic.Left(Orgid, 6)

OrganID.DeptMidId = Microsoft.VisualBasic.Right(Orgid, 6)

OrganID.DeptLowId = Microsoft.VisualBasic.Right(IDeptOrgid, 6)

IParseDeptOrgid = OrganID

End Function

'//End define Function IParseDeptOrgid

End Class

End Namespace

'*******************************************************************************

滚动新闻　术语词典　问题悬赏

我也说两句