前面写了一篇《带参数的CLR存储过程》http://www.cnblogs.com/insus/p/4373605.html ,如果我们需要创建一个带OUTPUT返回值。
实现它,可以先了解一下C#的OUT关键词
out (C# Reference)
打开刚才前面我们写好的SQL DataBase project,添加一个方法:
可复制代码:
public static void GetFruitName(out SqlString fruitName, SqlByte fruit_nbr ) { SqlConnection connection = new SqlConnection("Context connection=true"); connection.Open(); SqlCommand command = new SqlCommand(); command.Connection = connection; string sql = "SELECT [FruitName] FROM [dbo].[Fruit] WHERE [Fruit_nbr] = @Fruit_nbr"; command.CommandText = sql; SqlParameter param = new SqlParameter("@Fruit_nbr", SqlDbType.TinyInt); param.Value = fruit_nbr; command.Parameters.Add(param); try { string scalarValue = (string)command.ExecuteScalar(); fruitName = (SqlString)scalarValue; } catch { fruitName = string.Empty; } connection.Close(); }
Build solution,然后找开Microsoft SQL Server management studio,重新部署Assembly以及Clr stored procedure。
参考前两篇《简单创建与布署CLR存储过程》http://www.cnblogs.com/insus/p/4371762.html 和 《带参数的CLR存储过程》http://www.cnblogs.com/insus/p/4373605.html
执行存储过程:
时间: 2024-10-08 00:10:54