如何将自定义类对象列表绑定到Gridview的数据源获取“在...数据源上找不到字段或属性...”？

如何解决如何将自定义类对象列表绑定到Gridview的数据源获取“在...数据源上找不到字段或属性...”？

为避免在第一次加载页面时查询数据库，我想向GridView填充自定义类的列表。

我正试图通过这种方式做到这一点：

protected void Page_Load(object sender,EventArgs e)
{
    List<MoviesGridDisplayColumns> listStartupData = new List<MoviesGridDisplayColumns>();
    MoviesGridDisplayColumns mgdc;

    mgdc = new MoviesGridDisplayColumns();
    mgdc.MovieTitle = "War of the Buttons";
    mgdc.MPAARating = "PG";
    mgdc.IMDBRating = 7.5;
    mgdc.Minutes = 94;
    mgdc.YearReleased = "1994";
    listStartupData.Add(mgdc);

    mgdc = new MoviesGridDisplayColumns();
    mgdc.MovieTitle = "The Trip to Bountiful";
    mgdc.MPAARating = "PG";
    mgdc.IMDBRating = 7.5;
    mgdc.Minutes = 108;
    mgdc.YearReleased = "1985";
    listStartupData.Add(mgdc);

    . . .

    GridView1.DataSource = listStartupData;
    GridView1.DataBind();

...但是在上面倒数第二行，我得到：

“ System.Web.HttpException HResult = 0x80004005 Message =一个字段或 在所选数据上找不到名称为“ MovieTitle”的媒体资源 来源。”

选定的数据源是MoviesGridDisplayColumns对象的List，它确实具有MovieTitle成员。那有什么呢？

自定义类为：

public class MoviesGridDisplayColumns
{
    public string MovieTitle = string.Empty;
    public double IMDBRating = 0.0;
    public string MPAARating = string.Empty;
    public string YearReleased = string.Empty;
    public int Minutes;
}

...并且GridView出现在.aspx文件中，因此：

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" OnDataBound="GridView1_DataBound" OnPreRender="GridView1_PreRender">
    <Columns>
        <asp:BoundField DataField="MovieTitle" HeaderText="MovieTitle" SortExpression="MovieTitle" />
        <asp:BoundField DataField="IMDBRating" HeaderText="IMDBRating" SortExpression="IMDBRating" />
        <asp:BoundField DataField="MPAARating" HeaderText="MPAARating" SortExpression="MPAARating" />
        <asp:BoundField DataField="YearReleased" HeaderText="YearReleased" SortExpression="YearReleased" />
        <asp:BoundField DataField="Minutes" HeaderText="Minutes" SortExpression="Minutes" />
    </Columns>
</asp:GridView>

解决方法

您的类中的字段缺少getter方法。您可以将MoviesGridDisplayColumns更改为以下内容。

public class MoviesGridDisplayColumns
    {
        public string MovieTitle { get; set; } = string.Empty;
        public double IMDBRating { get; set; } = 0.0;
        public string MPAARating { get; set; } = string.Empty;
        public string YearReleased { get; set; } = string.Empty;
        public int Minutes { get; set; }
    }