續:datagrid主從表如何分別在兩個datagrid顯示(BindingManagerBase)

[derek]

參照:http://www.csdn.net/develop/Read_Article.asp?Id=17840 建立主從時出現問題:

//建立customers和聯繫人的relation
DataRelation datarelation;
DataColumn datacolumn1;
DataColumn datacolumn2;
datacolumn1=this.ds.Tables["customers"].Columns["custid"];
datacolumn2=this.ds.Tables["contacts"].Columns["custid"];
datarelation=new DataRelation("CustomerToContacts",datacolumn1,datacolumn2);

BindingManagerBase bmbaseParent = this.BindingContext[this.ds ,"customers"];
BindingManagerBase bmbaseChild =this.BindingContext[this.ds,"customers.datarelation"]; // 出現錯誤提示

錯誤提示內容:
An unhandled exception of type 'System.ArgumentException' occurred in system.windows.forms.dll

Additional information: Cannot create a child list for field datarelation.

[雪狼1234567]

改成如下：
BindingManagerBase bmbaseChild =this.BindingContext[this.ds,"customers.CustomerToContacts"];

[雪狼1234567]

例子代码：GoodManager是relation名字
this.dgMaster.DataSource = dt;
this.dgMaster.DataMember = "Master";
this.dgDetail.DataSource = dt;
this.dgDetail.DataMember = "Master.GoodManager";
this.dgMaster.SetDataBinding(dt,"master");
this.dgMaster.SetDataBinding(dt,"master.GoodManager");