c# - ASPxGridView GetSelectedFieldValues 不起作用

Question

我想选择一行并用它的 Id 列做一些事情，但是它不起作用，我遇到了最后提到的错误。这是我得到的-

ASPxGridView 片段 -

<dx:ASPxGridView ID="ASPxGridView1" runat="server" Font-Names="Arial" Font-Size="Small"
  Width="100%" ClientInstanceName="grid" oncustomcallback="grid_CustomCallback"                                              
  onbeforegetcallbackresult="ASPxGridView1_BeforeGetCallbackResult" 
  EnableCallBacks="False" EnableRowsCache="False" KeyFieldName="ID">

... Columns here ...

<ClientSideEvents ContextMenu="OnContextMenu" SelectionChanged="OnSelectionChanged" />      
</dx:ASPxGridView>

注意：网格通过 DataTable 填充

数据表代码 -

protected DataTable GetHeadlineData(SqlDataReader rdr)
{
    DataTable headlineTable = new DataTable();        
    headlineTable.Load(rdr)
    headlineTable.PrimaryKey = new DataColumn[] { headlineTable.Columns["ID"] };
    return headlineTable;
}

页面加载代码 -

DataTable dt= new DataTable();    
dt= FillGrid(); //this function internally calls the above GetHeadlineData function
Session["headTable"] = dt;
ASPxGridView1.DataSource = Session["headTable"];
ASPxGridView1.KeyFieldName = "ID";
ASPxGridView1.DataBind();

SelectionChanged 函数 -

    function OnSelectionChanged(s, e) {              
        grid.GetSelectedFieldValues("ID", OnGetSelectedFieldValues);            
    }

    function OnGetSelectedFieldValues(result) {
        for (var i = 0; i < result.length; i++)
            for (var j = 0; j < result[i].length; j++) {
                document.getElementById('selectedRowDiv').innerHTML = result[i];                    
            }
    }        

我得到的错误 -

A primary key field specified via the KeyFieldName property is not found in the 
underlying data source. Make sure the field name is spelled correctly. Pay 
attention to the character case.

Answer 1

 <dx:ASPxGridView ID="grid" ClientInstanceName="grid" runat="server" DataSourceID="AccessDataSource1"
            KeyFieldName="CustomerID" Width="100%">
                    </dx:ASPxGridView>

您必须提供唯一的 Ky 列名KeyFieldName="Unique Column Name"

Answer 2

尝试将您的代码从 Page_Load 移动到 Page_Init 方法。在这种情况下，一切都应该按预期工作。

Answer 3

最终起作用的是使用 RowClick 事件而不是 SelectionChanged。