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技术文档 > VB文档 > VB.Net
连接SQL SERVER的公共类(VB.NET)
发表日期:2003-06-05 00:00:00作者: 出处:  

*****************************************************************************************************

'//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

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

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