使用表值参数时如何将多个参数一起传递给存储过程 [英] while using table valued parameter how to pass multiple parameter together to stored prcocedure

问题描述

我有一个像这样的表值参数

I have a table-valued parameter like this

CREATE TYPE dbo.Loc AS TABLE(Lo integer);

CREATE TYPE dbo.Loc AS TABLE(Lo integer);

我的存储过程如下所示:

My stored procedure looks like this:

ALTER PROCEDURE [dbo].[T_TransactionSummary]  
                        @startDate datetime,  
                        @endDate datetime,
                        @locations dbo.Loc readonly
              ..........................
              ...........................
WHERE     (Transaction_tbl.dtime BETWEEN @fromDate AND @toDate) 
AND (Location_tbl.Locid IN (select Lo from @locations))

我有一个包含多个项目的列表框.我可以从列表框中选择多个项目.如何将多个 Locationid 传递给我的存储过程

I have a listbox that contains multiple items. I can select multiple items from my listbox. How can I pass multiple Locationid to my stored procedure

 cnt = LSTlocations.SelectedItems.Count
 If cnt > 0 Then
          For i = 0 To cnt - 1
        Dim locationanme As String = LSTlocations.SelectedItems(i).ToString
        locid = RecordID("Locid", "Location_tbl", "LocName", locationanme)
next
end if  


  Dim da As New SqlDataAdapter
            Dim ds As New DataSet
            Dim cmd23 As New SqlCommand("IBS_TransactionSummary", con.connect)
            cmd23.CommandType = CommandType.StoredProcedure
            cmd23.Parameters.Add("@startDate", SqlDbType.NVarChar, 50, ParameterDirection.Input).Value = startdate
            cmd23.Parameters.Add("@endDate", SqlDbType.NVarChar, 50, ParameterDirection.Input).Value = enddate
Dim tvp1 As SqlParameter =cmd23.Parameters.Add("@location", SqlDbType.Int).Value = locid
 tvp1.SqlDbType = SqlDbType.Structured
        tvp1.TypeName = "dbo.Loc"
     da.SelectCommand = cmd23
    da.Fill(ds)

但我收到错误..我正在 vb.net 中处理 Windows 窗体

but i am getting error..i am working on windows forms in vb.net

推荐答案

http://msdn.microsoft.com/en-us/library/bb675163%28v=vs.110%29.aspx(请参阅标题为将表值参数传递给存储过程的部分"").

There are some examples of how to do this at http://msdn.microsoft.com/en-us/library/bb675163%28v=vs.110%29.aspx (see the section titled "Passing a Table-Valued Parameter to a Stored Procedure ").

最简单的事情似乎是用用户选择的值填充 DataTable 并将其传递给 @locations 参数的存储过程.

The simplest thing would seem to be filling a DataTable with the values the user selected and passing that to the stored procedure for the @locations parameter.

也许是这样的(注意我没有安装 VB.NET，所以把它当作它应该如何工作的大纲，而不一定是可以立即工作的代码):

Perhaps something along the lines of (note I don't have VB.NET installed, so treat this as an outline of how it should work, not necessarily as code that will work straight away):

cnt = LSTlocations.SelectedItems.Count
' *** Set up the DataTable here: *** '
Dim locTable As New DataTable
locTable.Columns.Add("Lo", GetType(Integer))

If cnt > 0 Then
    For i = 0 To cnt - 1
        Dim locationanme As String = LSTlocations.SelectedItems(i).ToString
        locid = RecordID("Locid", "Location_tbl", "LocName", locationanme)
        ' *** Add the ID to the table here: *** '
        locTable.Rows.Add(locid)
    next
end if  

Dim da As New SqlDataAdapter
Dim ds As New DataSet
Dim cmd23 As New SqlCommand("IBS_TransactionSummary", con.connect)
cmd23.CommandType = CommandType.StoredProcedure
cmd23.Parameters.Add("@startDate", SqlDbType.NVarChar, 50, ParameterDirection.Input).Value = startdate
cmd23.Parameters.Add("@endDate", SqlDbType.NVarChar, 50, ParameterDirection.Input).Value = enddate
' *** Supply the DataTable as a parameter to the procedure here: *** '
Dim tvp1 As SqlParameter =cmd23.Parameters.AddWithValue("@location", locTable)
tvp1.SqlDbType = SqlDbType.Structured
tvp1.TypeName = "dbo.Loc"
da.SelectCommand = cmd23
da.Fill(ds)

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