Question

我正在尝试使用ADO从Excel文件中访问和读取一些内容。我知道如何打开它并执行SELECT *并将其放入Recordset对象中。我不明白的是，如果我选择一组信息，如何访问该Recordset中的特定字段。

代码：

Private Sub SaveReq_Click()
' 
' Saves the current entry to the database
' Into the TABLE 'pr_req_table'
' 

' Open a connection to the database
dim data_base as Database
set data_base = OpenDatabase(CurrentProject.Path & "\test_database.accdb")

Sub InsertRecord()
Dim data_base As Database
Set data_base = OpenDatabase(CurrentProject.Path & "\test_database.accdb")

' Grab all information from form
' Add information to pr_req_table
Dim qd As QueryDef
Set qd = data_base.CreateQueryDef("")
qd.sql = "INSERT INTO pr_req_table(pr_no, pr_date, pr_owner, pr_link, pr_signed) " & _
    "values([p1],[p2],[p3],[p4],[p5])"
qd.Parameters("p1").Value = pr_num.Value
qd.Parameters("p2").Value = Format(pr_date.Value, "mm/dd/yyyy")
qd.Parameters("p3").Value = List22.Value
qd.Parameters("p4").Value = "Excel Copy #" & elec_copy.Value
qd.Parameters("p5").Value =  "Signed Copy #" & sign_copy.Value 
qd.Execute


' The following section reads from the elec_copy field's hyperlink
' It scans the Excel file for items it needs to include into the table
' It enters those cells into the TABLE 'items_needed_table'
'
' Slects row by row, and if the item has been marked TRUE, inserts
' That row into the TABLE 'items_needed_table'


' Open a connection to Excel
On Error Resume Next

Const adOpenStatic = 3
Const adLockOptimistic = 3
Const adCmdText = &H0001

Set objConnection = CreateObject("ADODB.Connection")

objConnection.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
    "Data Source=" & elec_copy.Value & ";" & _
    "Extended Properties=""Excel 8.0;HDR=Yes;"";"

' Decalre a RecordSet Object
Set objRecordSet = CreateObject("ADODB.Recordset")

' Grab all Rows in the Plain_VDR Sheet where 'needed' column == TRUE
objRecordset.Open "Select line_no, desc, weeks FROM [Plain_VDR$] Where needed = TRUE", _
    objConnection, adOpenStatic, adLockOptimistic, adCmdText

' Declare a loop counter for row?
Dim x as Integer
x = 0

' Write the information pulled, into the TABLE 'items_needed_table' in Access Database
Do Until objRecordset.EOF
        qd.sql = "INSERT INTO items_needed_table(pr_no, line_no, desc, weeks) " & _
        "Values([p1],[p2],[p3])"
        ' p1 was declared earlier in code, same value as before
        qd.Parameters("p2").Value = objRecorset.(ROW_X, "line_no")
        qd.Parameters("p3").Value = objRecordset.(ROW_X, "desc")
        qd.Parameters("p4").Value = objRecordset.(ROW_X, "weeks")
        qd.Execute
        x = x + 1
Loop

' Close Database connection
data_base.Close

End Sub

我主要关注的是'Do Until'循环部分。令人怀疑我可以插入整个选择，因为'pr_no'没有在Excel文件中定义，而是在Access数据库中定义，所以我想我需要为Excel文件中的每一行循环该命令。我需要使用什么来从Recordset对象中为每个行和字段分配我的参数值？

提前感谢您的帮助！

森

Answer 1

在您的连接字符串中，您说HDR =是，这意味着您的范围的第一行包含您的字段的名称，因此非常粗略：

Do Until objRecordset.EOF
    qd.Sql = "INSERT INTO items_needed_table(pr_no, line_no, desc, weeks) " & _
    "Values([p1],[p2],[p3])"
    ' p1 was declared earlier in code, same value as before
    '**No it was not, the earlier stuff is mostly irrelevant

    qd.Parameters("p2").Value = objRecorset.Fields("line_no")
    qd.Parameters("p3").Value = objRecordset.Fields("desc")
    qd.Parameters("p4").Value = objRecordset.Fields("weeks")
    qd.Execute
    ''You are moving through a recordset, not a worksheet
    objRecordset.MoveNext
Loop

如果您正在使用Excel进行选择，那么可以使用一个查询插入它，因为您没有更改pr_num。

使用ADO VBA将Excel字段插入Access表

1 个答案: