代码在需要一个的位置插入两个图像

问题描述

我想一次插入图像，但是我的代码一次插入两个图像，我的代码有误.请提供代码的解决方案.

I want to insert image one time but my code inserting two images at a time, where is mistake in my code. Please provide the solution for the code.

Try
      Dim sqlcon As New SqlClient.SqlConnection(ConfigurationManager.ConnectionStrings("cn").ConnectionString)
      sqlcon.Open()
      If FileUpload1.HasFile Then
          'Dim f(1) As String
          Dim f(0) As String
          Dim file() As FileUpload = {FileUpload1}
          Dim i As Integer
          Try
              cmd = New SqlClient.SqlCommand("Select max(id) from birthday", sqlcon)
              dr = cmd.ExecuteReader()
              While dr.Read
                  adcode = dr(0)
              End While
              dr.Close()
          Catch ex As Exception
              adcode = 0
              dr.Close()
          End Try
          For i = 0 To 0
              ' i = i + 1
              'adcode = adcode + 1
              adcode = adcode
              f(i) = upfile(file(i), i, adcode)
          Next
                      End If

  Catch ex As Exception
  Finally
      sqlcon.Close()
  End Try

Public Function upfile(ByVal file As FileUpload, ByVal i As Integer, ByVal cd As Integer) As String
        Dim sqlcon As New SqlClient.SqlConnection(ConfigurationManager.ConnectionStrings("cn").ConnectionString)
        sqlcon.Open()

        Dim f1, f As String
        f = file.FileName
        If f <> "" Then
            f1 = adcode
            f = f.Substring(f.LastIndexOf("."))
            f1 = "~/images/" + f1 + f
            file.SaveAs(Server.MapPath(f1))
            cmd = New SqlClient.SqlCommand("insert into birthday(title,photo,namewithdate) values('" & TextBox1.Text & "','" & f1 & "','" & TextBox2.Text & "')", sqlcon)
            cmd.ExecuteNonQuery()
            labMessage.Text = "Record Saved Sucessfully..."
            clear()
        End If
        Return 0
    End Function

推荐答案

Dim f(0) As String

如果不起作用，为什么还要麻烦地从数据库中读取数据，而您默认将其设置为零，以后又会引起问题?

Why do you bother to read from a database, if when it doesn''t work you default to zero and cause a problem later on?

Catch ex As Exception
    adcode = 0

为什么要串联字符串以生成SQL语句?使用参数化查询，或将数据库释放到Little Bobby Tables ...

Why are you concatenating strings to make an SQL statement? Use parametrized queries, or loose your database to Little Bobby Tables...

cmd = New SqlClient.SqlCommand("insert into birthday(title,photo,namewithdate) values(''" & TextBox1.Text & "'',''" & f1 & "'',''" & TextBox2.Text & "'')", sqlcon)

为什么会有循环?

Why do you have a loop?

For i = 0 To 0

这将执行多少次?

我可以继续，但是这段代码使我感到不舒服...

How many times will this be executed?

I could go on, but that code is making me feel queasy...

这篇关于代码在需要一个的位置插入两个图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！