DataBinding：'System.Data.DataRowView'不包含具有名称的属性

Question

我收到这个奇怪的错误...我的数据库中的主键是'DocumentID'所以我知道这不是问题。我正在尝试选择，编辑和删除gridview按钮，但我需要正确设置datakeynames才能使用它们。有任何想法吗？

<asp:GridView ID="GridView1" runat="server" DataSourceID="sdsDocuments" EnableModelValidation="True"
        SelectedIndex="0" OnSelectedIndexChanged="GridView1_SelectedIndexChanged" DataKeyNames="DocumentID, DocumentTitle, DocumentBody">
        <Columns>
            <asp:BoundField DataField="DocumentID" HeaderText="DocumentID" ReadOnly="True" SortExpression="ID" />
            <asp:BoundField DataField="DocumentTitle" HeaderText="DocumentTitle" SortExpression="Title" />
            <asp:BoundField DataField="DocumentBody" HeaderText="DocumentBody" SortExpression="Body" />
            <asp:CommandField ShowSelectButton="True" ShowDeleteButton="True" />
        </Columns>
    </asp:GridView>
    <asp:SqlDataSource ID="sdsDocuments" runat="server" ConnectionString="<%$ ConnectionStrings:blcDocumentationConnectionString %>"
        SelectCommand="SELECT [DocumentTitle], [DocumentBody] FROM [tblDocument]" />

这是堆栈跟踪......

    [HttpException (0x80004005): DataBinding: 'System.Data.DataRowView' does not contain a                 property with the name 'DocumentID'.] 
        System.Web.UI.DataBinder.GetPropertyValue(Object container, String propName) +8672869
       System.Web.UI.WebControls.GridView.CreateChildControls(IEnumerable dataSource, Boolean dataBinding) +2178
       System.Web.UI.WebControls.CompositeDataBoundControl.PerformDataBinding(IEnumerable data) +57
       System.Web.UI.WebControls.GridView.PerformDataBinding(IEnumerable data) +14
       System.Web.UI.WebControls.DataBoundControl.OnDataSourceViewSelectCallback(IEnumerable data) +114
       System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +31
       System.Web.UI.WebControls.DataBoundControl.PerformSelect() +142
       System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +73
       System.Web.UI.WebControls.GridView.DataBind() +4
       System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +82
       System.Web.UI.WebControls.CompositeDataBoundControl.CreateChildControls() +72
       System.Web.UI.Control.EnsureChildControls() +87
       System.Web.UI.Control.PreRenderRecursiveInternal() +44
       System.Web.UI.Control.PreRenderRecursiveInternal() +171
       System.Web.UI.Control.PreRenderRecursiveInternal() +171

   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +842

Answer 1

好吧，你没有选择documentid列，因此它不存在于数据表或数据视图中，你绑定到网格或通过数据表引用该列。

将您的查询更改为

 SelectCommand="SELECT [DocumentID],[DocumentTitle], [DocumentBody] FROM [tblDocument]" /> 

Answer 2

1-第一步，您必须在SELECT语句中选择Documentid列

SelectCommand="SELECT [DocumentID], [DocumentTitle], [DocumentBody] FROM [tblDocument]" />

2-您必须像以前一样将其包含在datagridview COLUMN中：

<asp:GridView ID="GridView1" runat="server" DataSourceID="sdsDocuments" EnableModelValidation="True"
        SelectedIndex="0" OnSelectedIndexChanged="GridView1_SelectedIndexChanged" DataKeyNames="DocumentID, DocumentTitle, DocumentBody">
        <Columns>
            <asp:BoundField DataField="DocumentID" HeaderText="DocumentID" ReadOnly="True" SortExpression="ID" />
            <asp:BoundField DataField="DocumentTitle" HeaderText="DocumentTitle" SortExpression="Title" />
            <asp:BoundField DataField="DocumentBody" HeaderText="DocumentBody" SortExpression="Body" />
            <asp:CommandField ShowSelectButton="True" ShowDeleteButton="True" />
        </Columns>
    </asp:GridView>

3-如果您在datagridview AllowPaging =“True”中使用Paging，则必须对事件OnSelectedIndexChanged =“GridView1_SelectedIndexChanged”进行SELECT记录，以在第二页和第三页中选择SELECT数据，依此类推：

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" DataSourceID="sdsDocuments" EnableModelValidation="True"
        SelectedIndex="0" OnSelectedIndexChanged="GridView1_SelectedIndexChanged" DataKeyNames="DocumentID, DocumentTitle, DocumentBody">

然后在事件OnSelectedIndexChanged =“GridView1_SelectedIndexChanged”：

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
                DataTable dt = // your SELECT statement //
                GridView1.DataSource = dt;
                GridView1.PageIndex = e.NewPageIndex;
                GridView1.DataBind();
}

如果您不使用此void，则单击第2页时会出现相同的错误

Answer 3

看来你的sqldatasource没有返回DocumentId列。

也许您应该将数据源定义更改为：

<asp:SqlDataSource ID="sdsDocuments" runat="server" ConnectionString="<%$ ConnectionStrings:blcDocumentationConnectionString %>"
    SelectCommand="SELECT [DocumentID], [DocumentTitle], [DocumentBody] FROM [tblDocument]" />