此主题相关图片如下：捕获.jpg

代码：

Select Case e.DataCol.Name
    Case "库存数量","补充数量","物料描述","规格型号","单位","物料属性","采购在途","单价"
        Dim Filter As String = "[物料代码] = \'" & e.DataRow("物料代码") & "\'"
        Dim drs As List(Of DataRow) = DataTables("采购订单").Select(Filter)
        For Each dr As DataRow In drs
            dr(e.DataCol.Name) = e.NewValue
        Next
End Select

此主题相关图片如下：捕获1.jpg

代码：
If e.DataCol.Name = "物料代码" Then
    If e.NewValue Is Nothing Then
        e.DataRow("物料描述") = Nothing
        e.DataRow("规格型号") = Nothing
        e.DataRow("单位") = Nothing
        e.DataRow("库存数量") = Nothing
        e.DataRow("补充数量") = Nothing
        e.DataRow("物料属性") = Nothing
        e.DataRow("采购在途") = Nothing
        e.DataRow("单价") = Nothing
    Else
        Dim dr As DataRow
        dr = DataTables("物料信息").Find("[物料代码] = \'" & e.NewValue & "\'")
        If dr IsNot Nothing
            e.DataRow("物料描述") = dr("物料描述")
            e.DataRow("规格型号") = dr("规格型号")
            e.DataRow("单位") = dr("单位")
            e.DataRow("库存数量") = dr("库存数量")
            e.DataRow("补充数量") = dr("补充数量")
            e.DataRow("物料属性") = dr("物料属性")
            e.DataRow("采购在途") = dr("采购在途")
            e.DataRow("单价") = dr("单价")
        End If
    End If
End If

老师，使用加载树时数据无法正常显示，会形成空白。需要怎么处理这个问题