在设计过程中加入下面的代码,但在测试时发现一连串的提示出错,查不清楚是什么原因:
Dim cmd6 As new sqlcommand
cmd6.C
Dim dt1 As DataTable
Dim ps As List(Of String)
Dim ids1 As String
cmd6.CommandText = "select part_no from {cpcbsj}" ’ 这里想要的是选择出cpcbsj表中的所有产品编号,cpcbsj是另一个数据源 的
dt1 = cmd6.ExecuteReader()
For Each dr6 As DataRow In dt1.DataRows
ids1 = ids1 & ",'" & dr6("part_no") & "'"
Next
ids1 = ids1.Trim(",")
ids1 = "(" & ids1 & ")"
MessageBox.Show("a" & ids1) ' 发现这里的ids1能返回正确的字符
Dim cmd3 As New SQLCommand
cmd3.C
Dim dt As DataTable
Dim ids As String
cmd3.CommandText = "select parent_part from {obom_stru2} where child_part = '" & e.DataRow("child_part") & "' And parent_part In " & ids1 ' 这里想要的是选择出当前修改的BOM的单价,且产品编码都在上面选择出的编码内的。
dt = cmd3.ExecuteReader()
For Each dr1 As DataRow In dt.DataRows
ids = ids & ",'" & dr1("parent_part") & "'" ’这里已能选出所有所要更新的产品编码
Next
ids = ids.Trim(",")
ids = "(" & ids & ")"
MessageBox.Show("b" & ids) ‘这里返回的字符也正确
For Each s1 As String In ids ’ 这里是想对所选出的编码产品逐一进行BOM总价更新
MessageBox.Show("bb" & s1) ’ 但这里第一出反回的是“(”,真奇怪,第二次出现的是 "'"
Dim cmd4 As New SQLCommand
Dim zj1 As Decimal
cmd4.C
cmd4.CommandText ="Select sum(bom_cbdj) As BOM总价 from {obom_stru2} INNER JOIN obas_part1 on {obom_stru2}.child_part = {obas_part1}.part_no where parent_part= '" & s1 & "'"
zj1 = cmd4.ExecuteScalar()
Dim cmd5 As New SQLCommand
cmd5.C
cmd5.CommandText = "UPDATE {cpcbsj} SET [cpcbb] = " & zj1 & " Where [part_no] = '" & s1 & "'"
cmd5.ExecuteNonQuery()
Next
测试过程中发现下面的提示信息:
此主题相关图片如下:1.png
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此主题相关图片如下:2.png
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此主题相关图片如下:3.png
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此主题相关图片如下:4.png
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此主题相关图片如下:5.png
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此主题相关图片如下:6.png
[此贴子已经被作者于2013-10-24 10:54:15编辑过]