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注册日期:12月10日 帖子:10 caba11在这一点上(< 10)如何二进制文件保存到数据库
如何保存二进制文件数据库 喜一个未知数。 我需要将文件保存到数据库中... 我找不到为什么它不工作...
这是我的代码:
Public Sub importfiles(ByVal sFileName As String)
Dim cnSQL As SqlConnection
Dim cmSQL As SqlCommand
Dim strSQL
'Validate form values
'Read file into a stream
Dim fs As New FileStream(sFileName, FileMode.Open, FileAccess.Read)
Dim myData(fs.Length) As Byte
fs.Read(myData, 0, fs.Length)
fs.Close()
Try
'Build SQL
strSQL = "insert into data_cesta(ID, cesta) values (@ID, @cesta)"
cnSQL = New SqlConnection("Data Source=.;AttachDbFilename=|DataDirectory|\Database1.mdf;Integrated Security=True;User Instance=True")
cmSQL = New SqlCommand(strSQL, cnSQL)
cmSQL.Parameters.Add(New SqlParameter("@ID", SqlDbType.Int)).Value = ID
cmSQL.Parameters.Add(New SqlParameter("@cesta", SqlDbType.NText)).Value = myData
' cmd2.Parameters.Add("@ID", SqlDbType.Int).Value = ID
' cmd2.Parameters.Add("@cesta", SqlDbType.NText).Value = myData
'Open connection and execute the command
cnSQL.Open()
cmSQL.ExecuteNonQuery()
'Close and clean up objects
cnSQL.Close()
cmSQL.Dispose()
cnSQL.Dispose()
Catch ex As SqlException
MsgBox(ex.Message, MsgBoxStyle.Critical, "SQL Error")
Catch ex As Exception
MsgBox(ex.Message, MsgBoxStyle.Critical, "General Error")
End Try
End Sub
没有尝试它说:“cmSQL.ExecuteNonQuery()” - “无法将参数值从DataGridViewTextBoxColumn转换为Int32。”
我正在尝试这个,但仍然是相同的错误.... http://www.aspsnippets.com/Articles/Save-and-Retrieve-Files-from-SQL-Server-Database-using-ASP.Net.aspx – caba11 2011-01-11 12:06:44