SqlBulkCopy將變量添加到Excel inport ASP.Net

Question

我有一個SqlBulkCopy函數，用於導入Excel工作表。它工作正常，除了我想向Excel電子表格中不存在的數據庫表添加變量/常量值。我嘗試過的所有東西都不起作用。

我一直在試圖添加變量MyUser，我不斷收到相同的錯誤OleDBException Was Unhandled。註釋掉的兩行是我最後的兩次嘗試。我正在使用asp.net 4.0，VS2010，SQL Server 2008.

Dim excelConnectionString As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & MyFile & ";Extended Properties=""Excel 12.0;HDR=YES;""" 

Using connection As New System.Data.OleDb.OleDbConnection(excelConnectionString) 

     Dim MyUser As String = UCase(My.User.Name) 

     Dim command As New System.Data.OleDb.OleDbCommand("Select MA_Code FROM [" & cboSheet.Text & "$]", connection) 
     'Dim command As New System.Data.OleDb.OleDbCommand("Select MA_Code, " & MyUser & " as MyUser FROM [" & cboSheet.Text & "$]", connection) 
     'Dim command As New System.Data.OleDb.OleDbCommand("Select MA_Code, " + MyUser + " as MyUser FROM [" & cboSheet.Text & "$]", connection) 
     connection.Open() 

     Using dr As System.Data.OleDb.OleDbDataReader = command.ExecuteReader() 

      Dim BKcn As New SqlClient.SqlConnection 
      BKcn.ConnectionString = My.Settings.MyConnection 
      BKcn.Open() 
      Try 
       Using bulkCopy As New System.Data.SqlClient.SqlBulkCopy(BKcn) 
        bulkCopy.BatchSize = 500 
        bulkCopy.BulkCopyTimeout = 3000 
        bulkCopy.DestinationTableName = cboSheet.Text 

        bulkCopy.ColumnMappings.Add("MA_Code", "MA_Code") 
        bulkCopy.WriteToServer(dr) 
       End Using 

Answer 1

您需要在變量周圍添加單引號。我希望MYUSER的價值正在就好像你問的帽子名稱的列：

如果他的用戶名是鮑勃，將SQL - 後級聯是這樣，也沒有鮑勃柱：
Dim command As New System.Data.OleDb.OleDbCommand("Select MA_Code, Bob as MyUser FROM [" & cboSheet.Text & "$]", connection)

你希望它看起來是這樣的：

Dim command As New System.Data.OleDb.OleDbCommand("Select MA_Code, 'Bob' as MyUser FROM [" & cboSheet.Text & "$]", connection)

在你的代碼試試這個

Dim command As New System.Data.OleDb.OleDbCommand("Select MA_Code, '" & MyUser & "' as MyUser FROM [" & cboSheet.Text & "$]", connection)

Brian