将ADO.Net DataTable插入SQL表

Question

我实施的当前解决方案非常糟糕!

我使用a for... loop将ADO.NET数据表中的记录插入到SQL表中.

我想立即将数据表插入到SQL表中,而不需要迭代...

这可能吗,还是我问得太多了？

Answer 1

您可以将整个DataTable作为单个表值参数传递,并立即插入整个TVP.以下是SQL Server 2008(ADO.NET)中的表值参数的示例:

// Assumes connection is an open SqlConnection.
using (connection)
{
// Create a DataTable with the modified rows.
DataTable addedCategories = CategoriesDataTable.GetChanges(
    DataRowState.Added);

// Define the INSERT-SELECT statement.
string sqlInsert = 
    "INSERT INTO dbo.Categories (CategoryID, CategoryName)"
    + " SELECT nc.CategoryID, nc.CategoryName"
    + " FROM @tvpNewCategories AS nc;"

// Configure the command and parameter.
SqlCommand insertCommand = new SqlCommand(
    sqlInsert, connection);
SqlParameter tvpParam = insertCommand.Parameters.AddWithValue(
    "@tvpNewCategories", addedCategories);
tvpParam.SqlDbType = SqlDbType.Structured;
tvpParam.TypeName = "dbo.CategoryTableType";

// Execute the command.
insertCommand.ExecuteNonQuery();
}

TVP仅适用于SQL 2008.