DataBinding：'System.Data.DataRowView'错误 [英] DataBinding: 'System.Data.DataRowView' error

问题描述

我有这个错误DataBinding：'System.Data.DataRowView'不包含名为'StudentName'的属性。，我该如何修复它？

I have this error "DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'StudentName'.", how can I fix it ??

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolderSubMenu" Runat="Server">

</asp:Content>
<asp:Content ID="Content3" ContentPlaceHolderID="ContentPlaceHolderMainContent" Runat="Server">

<table>
<tr>
    <td style="width:150px;">Courses</td>
    <td style="width:20px">:</td>
    <td>
        <asp:DropDownList ID="DropDownListCourses" runat="server"></asp:DropDownList>
    </td>
</tr>

<tr>
    <td style="width:150px;"></td>
    <td style="width:20px"></td>
    <td>
        <asp:Button ID="ButtonView" runat="server" Text="Veiw"

            onclick="ButtonView_Click"/>
    </td>
</tr>
</table>

<div style="padding-top:30px"></div>
<table>
<asp:Repeater ID="RepeaterDataVeiw" runat="server">

    <HeaderTemplate>
    <table>
        <tr>
        <td>Student Name</td>
        <td>Course</td>
        <td>Subject</td>
        <td>Veiw</td>

        </tr>
        </HeaderTemplate>

        <ItemTemplate>
        <tr>
        <td><%#Eval("StudentName")%></td>
        <td><%#Eval("CourseName")%></td>
        <td><%#Eval("SubjectName")%></td>
        <td><a href="ListForum.aspx">Forum</a></td>
        </tr>
        </ItemTemplate>

        <AlternatingItemTemplate>
        <tr>
         <td><%#Eval("StudentName")%></td>
        <td><%#Eval("CourseName")%></td>
        <td><%#Eval("SubjectName")%></td>
        <td><a href="ListForum.aspx">Forum</a></td>
        </tr>
        </AlternatingItemTemplate>

        <FooterTemplate>
        </table>
        </FooterTemplate>

    </asp:Repeater>
</table>

</asp:Content>

public partial class Student_ListCourses : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        try
        {
            if (!IsPostBack)
            {
                System.Data.DataTable  dt;
                BusinessLayer.CoursesController oCourse = new BusinessLayer.CoursesController();
                dt = oCourse.Select();
                DropDownListCourses.DataSource = dt;
                DropDownListCourses.DataValueField = "CourseID";
                DropDownListCourses.DataTextField = "CourseName";
                DropDownListCourses.DataBind();
            }
        }

        catch (Exception ex)
        { }
    }
    protected void ButtonView_Click(object sender, EventArgs e)
    {
        try
        {
            System.Data.DataTable dt;
            BusinessLayer.SubjectsController oCourse = new BusinessLayer.SubjectsController();
            oCourse.CourseID = int.Parse(DropDownListCourses.SelectedValue);
            dt = oCourse.Select();
            RepeaterDataVeiw.DataSource = dt;
            RepeaterDataVeiw.DataBind();
        }

        catch (Exception ex)
        { }
    }
}

推荐答案

真的吗？错误告诉您的是，您的数据库查询未返回任何名为StudentName的列。你觉得你应该怎么做？你怎么诊断这个小问题？

Really?? What the error is telling you is that your database query didn't return anything with a column called "StudentName". What you do think you should do about that? How would you diagnose that little problem?

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