绑定源问题 [英] Problem With Binding Source

问题描述

hi
我试图将绑定源转换为数据表...但是每次遇到错误时，请帮忙.

hi
i tried to convert from binding source to data table ...but every time i''m getting and error, please help.

objMedSource.DataSource = objMedication;
            dtgMedicine.DataSource = objMedSource;//where i showed the binding source to be the data source of data grid
   DataTable dttable;
            //DataView dv;
            //dv = (DataView) dtgMedicine.DataSource;
            //dv.DataViewManager = objMedSource;
            //dttable = dv.Table.DataSet.Tables[0];
            //dttable = ((DataSet)objMedSource.DataSource).Tables[objMedSource.DataMember];
            //dttable = (DataTable)objMedSource.DataSource;
            dttable = ((DataTable)(dtgMedicine.DataSource)).Clone();

在这里，我在转换过程中出错..我尝试了几种可能的方法.请帮助

here i get error during conversion..i tried several possible ways. please help

推荐答案

您是否要从ObjectDataSource将数据加载到Datatable ?如果是这样，从技术上讲是可能的，但毫无意义. ObjectDataSource 的作用是declaratively 将数据绑定到控件.在ObjectDataSource 控件可以使用它之前，您需要创建一个方法以将其加载到某些内容(例如DataTable，或更可能是List<myobject></myobject>)中. ObjectdataSource 控件不是数据容器.它们只是指向以一种或另一种形式返回数据的方法的一种手段. REF

如果您正在寻找将ObjectDataSource连接到DataTable的方法，请尝试以下操作:
使用Code-后面

Do you mean you want to load data into the Datatable from an ObjectDataSource? If so, technically it''s possible but pointless. The role of the ObjectDataSource is to declaratively bind data to a control. You would need to create a method to load it into something (such as a DataTable, or more likely a List<myobject></myobject>) before the ObjectDataSource control could work with it. ObjectdataSource controls are not data containers. They are simply a means of pointing to a method that returns data in one form or another. REF

If you are looking for Connecting an ObjectDataSource to a DataTable then try the following:
Connecting an ObjectDataSource to a DataTable in Code-behind

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