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，编辑和放大删除gridview按钮，但我需要正确设置datakeynames才能使用它们。任何想法？

<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

您的sqldatasource似乎没有返回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]" />

Answer 3

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括在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-如果在datagridview AllowPaging =“ True”中使用分页，则还必须在事件OnSelectedIndexChanged =“ GridView1_SelectedIndexChanged”上同时选择文件ID，以在第二页和第三页中选择数据，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”上进行

：

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

如果您不使用此空白，则单击第2页时会出现相同的错误

Answer 4

DataSet Année = new DataSet();
Année.ReadXml(Server.MapPath("~/Annees.xml"));

DropDownList1.DataTextField = "Number";
DropDownList1.DataValueField = "Number";
DropDownList1.DataSource = "Année";

DropDownList1.DataBind();

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

4 个答案: