为什么网格变成只读？如何避免只读网格问题？
我有一个要绑定的 DevExpress xtraGrid。当我尝试绑定时，编译器给出错误，指出 gridView 数据源是只读的。我尝试了以下方法，我的代码是
NorthwindDataContext db = new NorthwindDataContext();
var r = from p in db.Orders
select p;
var r2 = from p in db.Order_Details
select p;
gridView1.DataSource = r;
gridView2.DataSource = r2;
我收到以下错误： 属性或索引器'DevExpress.XtraGrid.Views.Base.BaseView.DataSource'无法分配给--它是只读的
我检查了gridView上的列属性，它不是只读的。为什么我会收到此错误？实际上我的网格是空的，我要将它绑定到数据库。
I have a DevExpress xtraGrid which I want to bind. When I try to bind, the compiler gives an error that the gridView datasource is readonly. I tried the below approach, my code is
NorthwindDataContext db = new NorthwindDataContext();
var r = from p in db.Orders
select p;
var r2 = from p in db.Order_Details
select p;
gridView1.DataSource = r;
gridView2.DataSource = r2;
I get the following error:
Property or indexer 'DevExpress.XtraGrid.Views.Base.BaseView.DataSource' cannot be assigned to -- it is read only
I checked my column property of on the gridView and It is not read only. Why I am getting this error? Actually my grid is empty, I am going to bind it to a database.
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您需要设置控制
GridView的GridControl的DataSource，而不是GridView本身。来自 DevExpress 的站点：如何：在运行时将控件绑定到数据库
You need to set the
DataSourceof theGridControlthat controls yourGridView, not of theGridViewitself.From DevExpress's site: How to: Bind a Control to a Database at Runtime
默认情况下，XtraGrid 将识别您的关系并为子表创建克隆视图。如果您想更改视图选项（隐藏列、更改格式等...），您可以定义自己的 GridView，但这需要您设置 GridControl 的 LevelTree 属性。
By default, the XtraGrid will recognize your relationships and create cloned views for the child tables. You can define your own GridViews if you want to change view options (hide columns, change formatting etc...), but this will require you to set the GridControl's LevelTree property.