未預期的操作數類型衝突：表類型爲int不兼容在執行存儲過程

Question

我有表值參數是這樣的：

CREATE TYPE [dbo].[Loc] AS TABLE(Lo integer) 

我的存儲Proceurdure採取的位置ID是這樣的：

ALTER PROCEDURE [dbo].[T_TransactionSummary] 
@startDate datetime, 
@endDate datetime, 
@locations dbo.Loc readonly 
.......................... 
......................... 
WHERE  (Transaction_tbl.dtime BETWEEN @fromDate AND @toDate) 
AND EXISTS (SELECT 1 FROM @locations WHERE lo = Location_tbl.Locid) 

我的locid字段是整數這個locid來自我的listbox.if我選擇一個項目1 locid會come.if我選擇2項目2 locid會來..我有一個ListBox填充@locations參數（整數），我把我的列表框的值如下

cnt = LSTlocations.SelectedItems.Count 
    Dim dtlist As New DataTable() 
    Dim locid As Integer 
    If cnt > 0 Then 
     For i = 0 To cnt - 1 
      dtlist.Columns.Add(locid, GetType(Integer)) 
      Dim locationanme As String = LSTlocations.SelectedItems(i).ToString 
      locid = RecordID("Locid", "Location_tbl", "LocName", locationanme) 
      dtlist.Rows.Add(locid) 
     Next 
End If 
Dim da As New SqlDataAdapter 
     Dim ds As New DataSet 
     Dim cmd23 As New SqlCommand("T_TransactionSummary", con.connect) 
     cmd23.CommandType = CommandType.StoredProcedure 
     Dim tvp1 As SqlParameter = cmd23.Parameters.AddWithValue("@locations", dtlist) 
     tvp1.SqlDbType = SqlDbType.Structured 
     tvp1.TypeName = "dbo.Loc" 
     da.SelectCommand = cmd23 
     da.Fill(ds) 

，但我得到的錯誤是這樣的：

操作數類型衝突：表類型爲int

不相容什麼是錯我的代碼和存儲過程

Answer 1

也許這是因爲您在創建SqlCommand時未指定存儲過程的前兩個參數（@startdate，@enddate）