在.NET中有两种调用，一种是跨应用域（App Domain)，一种是跨上下文环境（Context)，两种调用均通过中间的代理（proxy)，代理被分为两个部分：透明代理和实际代理。透明代理暴露同对象一样的公共入口点，当客

Posted on 2005-07-06 11:24 追风逐云.NET 阅读(234) 评论(0)  编辑 收

ContextAttribute派生自Attribute,同时它还实现了IContextAttribute和IContextProperty接口。所有自定义的ContextAttribute必须从这个类派生。
构造器：
ContextAttribute:构造器带有一个参数，用来设置ContextAttribute的名称。

公共属性：
Name:只读属性。返回ContextAttribute的名称

公共方法：

All the parameters will be added to the data adapter's Parameters collection and bound to a DataTable column.

SqlParameter p1 = new SqlParameter("@sFirstName", SqlDbType.NVarChar, 10);
p1.SourceVersion = DataRowVersion.Current;
p1.SourceColumn = "firstname";
da.InsertCommand.Parameters.Add(p1);
SqlParameter p2 = new SqlParameter("@sLastName", SqlDbType.NVarChar, 30);
p2.SourceVersion = DataRowVersion.C

Dino Esposito
Wintellect

November 8, 2001

The interaction between ADO.NET applications and the underlying data sources is based on a dual architecture with two-way channels. You access a data source to read and write rows using either individual and provider-specific commands or batch update procedures. In both cases, the data access results in a complete two-way binding and involve

I’ve gotten this same question several times in the last few weeks, so I thought it would be a good idea to put together some details on the topic. Update batching is a new ADO.NET 2.0 feature that, when enabled, introduces an optimization to the process of executing a DataAdapter.Update call (which basically takes the changes from a DataTable and pushes them into a database using th