数据主义者在vb.试图获取datalist中行或单元格的特定值

Question

我有一个vb web形式的datalist.

如何获取数据列表的特定行和单元格中的值？

我可以为detailview做这个,但是如何为datalist做呢？

以下是我的详细信息代码:

 Dim selectedCommentAns As String = DetailsView.Rows(0).Cells(1).Text

我为datalist尝试了相同的方法,但它没有选择行和单元格.

这是我的datalist的asp标记:

<asp:DataList ID="DataListPhotoGallery" runat="server" CellPadding="5" 
    CellSpacing="12" DataKeyField="PhotographerPhotoId" 
    DataSourceID="SqlDataSourcePhotoGallery" RepeatColumns="3">
    <ItemTemplate>
        <asp:Image ID="Image1" runat="server" BorderColor="#C7B273" 
            BorderStyle="Groove" BorderWidth="12px" Height="200px" 
            ImageUrl='<%# Eval("PhotographerPhotoImgPath", "images/UserUploadedPhoto/{0}") %>' 
            Width="220px" />
        <br />
        Photo No:&nbsp;
        <asp:Label ID="PhotographerPhotoIdLabel" runat="server" 
            Text='<%# Eval("PhotographerPhotoId") %>' />
        <br />
        Photo Description:
        <asp:Label ID="PhotographerPhotoDescLabel" runat="server" 
            Text='<%# Eval("PhotographerPhotoDesc") %>' />
        <br />
        Photo Name:
        <asp:Label ID="PhotographerPhotoImgNameLabel" runat="server" 
            Text='<%# Eval("PhotographerPhotoImgName") %>' />
        <br />
        Photographer Name:
        <asp:Label ID="PhotographerIdLabel" runat="server" 
            Text='<%# Eval("PhotographerName") %>' />
        <br />
        <asp:Button ID="AddCommentBtn" runat="server" 
            CommandArgument='<%# Eval("PhotographerPhotoId") %>' Font-Bold="True" 
            Font-Size="Medium" onclick="AddCommentBtn_Click" Text="Add Comment" />
        <asp:Button ID="Button2" runat="server" 
            CommandArgument='<%# Eval("PhotographerPhotoId") %>' Font-Bold="True" 
            Font-Size="Medium" onclick="Button2_Click" Text="Order Photo" />
        <br />

Answer 1

而不是Rows和Cells,DataList有一个名为的属性Items,允许您访问其数据绑定项集合:

Dim itemIndex As Integer = 9
Dim label As Label = DataListPhotoGallery.Items(itemIndex).FindControl("PhotographerPhotoIdLabel")
Dim text As String = label.Text

如果您知道行索引和列索引但不知道项索引,那么您可以像这样计算项索引:

• 如果RepeatDirection是Horizontal: itemIndex = rowIndex * RepeatColumns + columnIndex
• 如果RepeatDirection是Vertical:如果你需要,发表评论,因为它相当复杂.