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我询问如何将子 DataGridView的数据解析到主 DataGridView。例如：

我在主 DataGridView 上有一个名为“异常”的列，我需要来自子 DataGridView 的可用列的数据显示在主 DataGridView“异常”列上。我已经尝试过 CustomCallBack 但它不起作用。出现的错误：

"DataBinding: 'DevExpress.Web.Data.WebDataRow' does not contain a property with the name 'isAvail'`

我的代码：主 DataGridView id 是 disgrid，子 DataGridView 是 detgrid

主DataGridView异常列的代码（asp.net）

<dx:ASPxGridView ID="DisGridx" runat="server" OnCustomUnboundColumnData="griddata" OnHtmlDataCellPrepared="gridcell" ClientIDMode ="Static" ClientInstanceName="DisGridx" Width="100%" KeyFieldName="ID" " >
    <dx:GridViewDataTextColumn FieldName="abnormal" Caption="Abnormal" >
                                   <DataItemTemplate>
                                        <dx:ASPxHyperLink ID="ASPxHyperLink" runat="server" Text='<%# Eval("[isAvail]") %> ' ClientSideEvents-Click='<%# "function(s,e) { DetGridx.PerformCallback(""" & Eval("ID").ToString & """); contentpop2();}" %>'  >
                                        </dx:ASPxHyperLink>
                                   </DataItemTemplate>
                               </dx:GridViewDataTextColumn>

DetGridx (asp.net) 的代码

<dx:ASPxGridView ID="DetGridx" runat="server" ClientIDMode="Static" OnCustomCallback="DetGridx_CustomCallback" OnHtmlDataCellPrepared="DetGridx_HtmlDataCellPrepared" OnDataBinding="DetGridx_DataBinding"  ClientInstanceName ="DetGridx"  KeyFieldName="ID"

主 DataGridView (vb.net) 的代码

.....................................

    Dim csvFileFolder As String = "C:\New folder\"
    Dim csvFile As String = "QtimeAutomotiveByLot_New.csv"

    Dim adapter2 As New OleDbDataAdapter

    ' specify directory path containing CSV file as data source
    Dim strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + csvFileFolder + ";Extended Properties='Text;HDR=YES;FMT=Delimited';"

    Dim connx As New OleDbConnection(strCon)
    connx.Open()

    ' To display file from csv
    Dim sql As New OleDbCommand("Select distinct(ID),COUNT(isAvail) as isAvail from [" + csvFile + "] where isAvail = 0 group by ID, isAvail ", connx)


    adapter2.SelectCommand = sql

    adapter2.Fill(ds,"csv")

    connx.Close()  


  ds.Tables("lotlist").PrimaryKey = New DataColumn() {ds.Tables("lotlist").Columns("ID")}
    ds.Tables("comd").PrimaryKey = New DataColumn() {ds.Tables("comd").Columns("ID")}
    ds.Tables("monitor").PrimaryKey = New DataColumn() {ds.Tables("monitor").Columns("ID")}
 ds.Tables("csv").PrimaryKey = New DataColumn() {ds.Tables("csv").Columns("ID")}

    dt.Merge(ds.Tables("lotlist"))
    dt.Merge(ds.Tables("comd"))
    dt.Merge(ds.Tables("monitor"))
    dt.Merge(ds.Tables("csv"))

    Dim dv1 As DataView = dt.DefaultView

    dv1.RowFilter = "[Cat] <> '' "

    DisGridx.DataSource = dv1
    DisGridx.DataBind()

DetGridx customcallback vb.net 的代码

  Protected Sub DetGridx_CustomCallback(sender As Object, e As ASPxGridViewCustomCallbackEventArgs)

        Dim sql As New OleDbCommand("Select * from [" + csvFile + "] where ID = 'L-" + e.Parameters + "' AND STEPHANDLE = (SELECT TOP 1 STEPHANDLE from [" + csvFile + "] WHERE ID = '" + e.Parameters + "')", connx)

        adapter2.SelectCommand = sql

        adapter2.Fill(dt1)

        connx.Close()

        DetGridx.DataSource = dt1
        DetGridx.DataBind()
    End Sub

有人可以指导我吗？或者提供一个类似的例子供我参考就足够了。

样本和预期输出：

Main Gridview                 Sub Grid View

Abnormal   ID                  ID       Note      isAvail  
  0/3      kiv-02             kiv-02     1-2        0
                              kiv-02     1-3        0
                              kiv-02     1-4        0

提前致谢。

试图 ：

添加 ds.Tables("dat").PrimaryKey = New DataColumn() {ds.Tables("dat").Columns("isAvail")}到主网格功能

错误：这些列当前没有唯一值。

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1 回答 1

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可能你需要稍微改变Eval("isAvail")一下Eval("[isAvail]")：

<DataItemTemplate>
    <dx:ASPxHyperLink ID="ASPxHyperLink1" runat="server" Text='<%# Eval("[isAvail]") %>' ... >
    </dx:ASPxHyperLink>
</DataItemTemplate>

或Container.DataItemPosition在使用前检查DataBinder.Eval()：

<DataItemTemplate>
    <dx:ASPxHyperLink ID="ASPxHyperLink1" runat="server" Text='<%# If(Container.DataItemPosition > 0, DataBinder.Eval(Container.Items[Container.DataItemPosition], "[isAvail]"), "") %>' ... >
    </dx:ASPxHyperLink>
</DataItemTemplate>

发生异常WebDataRow是因为Eval()（和Bind()表达式）尝试在运行时重新绑定网格并且DisGridx尚未分配数据源（即在分配属性ASPxGridView之前构建的列层次结构，请参见此处的说明）。DataSource

参考：

“DevExpress.Web.Data.WebDataRow”不包含名称为的属性

“DevExpress.Web.Data.WebDataRow”不包含名为“X”的属性

于 2018-09-14T08:00:37.330 回答