使用对 DataTable 所做的更改更新数据库...混乱 [英] Update database with changes made to DataTable... confusion

问题描述

如果我使用 DataAdapter.Fill(DataTable); 填充 DataTable，然后使用如下简单的内容更改 DataTable 中的一行:DataTable.Rows[0]["Name"] = "New Name"; 如何轻松地将这些更改保存回数据库?我以为我可以调用 DataAdapter.Update(DataTable); 但我读到它只适用于 TableAdapter(?).

If I fill a DataTable with DataAdapter.Fill(DataTable); and then make changes to a row in the DataTable with something simple like this: DataTable.Rows[0]["Name"] = "New Name"; how can I easily save those changes back to the database? I assumed I could call DataAdapter.Update(DataTable); but I read that only works with a TableAdapter(?).

推荐答案

这是一个实际有用的答案，以防其他人需要知道如何执行此操作:

Here is an actual helpful answer in case anyone else needs to know how to do this:

string selectStatement = "SELECT * FROM Contact";
System.Data.DataTable dt = new System.Data.DataTable();
SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["MyConnectionString"].ConnectionString);
conn.Open();
SqlDataAdapter sqlDa = new SqlDataAdapter();
sqlDa.SelectCommand = new SqlCommand(selectStatement, conn);
SqlCommandBuilder cb = new SqlCommandBuilder(sqlDa);
sqlDa.Fill(dt);
dt.Rows[0]["Name"] = "Some new data here";
sqlDa.UpdateCommand = cb.GetUpdateCommand();
sqlDa.Update(dt);

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