.net调用存储过程详细介绍

连接字符串

string conn = ConfigurationManager.ConnectionStrings["NorthwindConnectionString"].ConnectionString;

confige文件

 <connectionStrings>
 <add name="NorthwindConnectionString" connectionString="Data Source=.;Initial Catalog=Northwind;Integrated Security=True" providerName="System.Data.SqlClient"/>
 </connectionStrings>

 SqlConnection sqlconn = new SqlConnection(conn);
 SqlCommand cmd = new SqlCommand();
 // 设置sql连接
 cmd.Connection = sqlconn;
 // 如果执行语句
 cmd.CommandText = "Categoriestest1";
 // 指定执行语句为存储过程
 cmd.CommandType = CommandType.StoredProcedure;

 SqlDataAdapter dp = new SqlDataAdapter(cmd);
 DataSet ds = new DataSet();
 // 填充dataset
 dp.Fill(ds);
 // 以下是显示效果
 GridView1.DataSource = ds;
 GridView1.DataBind();

CREATE PROCEDURE Categoriestest1 
AS
select * 
from Categories
GO

2. 没有输入输出的存储过程
c#代码部分

 SqlConnection sqlconn = new SqlConnection(conn);
 SqlCommand cmd = new SqlCommand();

 cmd.Connection = sqlconn;
 cmd.CommandText = "Categoriestest2";
 cmd.CommandType = CommandType.StoredProcedure;
 sqlconn.Open();
 // 执行并显示影响行数
 Label1.Text = cmd.ExecuteNonQuery().ToString();
 sqlconn.Close();

CREATE PROCEDURE Categoriestest2 AS
insert into dbo.Categories 
(CategoryName,[Description],[Picture])
values ('test1','test1',null)
GO

SqlConnection sqlconn = new SqlConnection(conn);
 SqlCommand cmd = new SqlCommand();
 cmd.Connection = sqlconn;
 cmd.CommandText = "Categoriestest3";
 cmd.CommandType = CommandType.StoredProcedure;
 // 创建参数
 IDataParameter[] parameters = {
 new SqlParameter("rval", SqlDbType.Int,4)
 };
 // 将参数类型设置为 返回值类型
 parameters[0].Direction = ParameterDirection.ReturnValue;
 // 添加参数
 cmd.Parameters.Add(parameters[0]);

 sqlconn.Open();
 // 执行存储过程并返回影响的行数
 Label1.Text = cmd.ExecuteNonQuery().ToString();
 sqlconn.Close();
 // 显示影响的行数和返回值
 Label1.Text += "-" + parameters[0].Value.ToString() ;

CREATE PROCEDURE Categoriestest3
AS
insert into dbo.Categories 
(CategoryName,[Description],[Picture])
values ('test1','test1',null)
return @@rowcount
GO

SqlConnection sqlconn = new SqlConnection(conn);
 SqlCommand cmd = new SqlCommand();
 cmd.Connection = sqlconn;
 cmd.CommandText = "Categoriestest4";
 cmd.CommandType = CommandType.StoredProcedure;
 // 创建参数
 IDataParameter[] parameters = {
 new SqlParameter("@Id", SqlDbType.Int,4) ,
 new SqlParameter("@CategoryName", SqlDbType.NVarChar,15) ,
 };
 // 设置参数类型
 parameters[0].Direction = ParameterDirection.Output; // 设置为输出参数
 parameters[1].Value = "testCategoryName";
 // 添加参数
 cmd.Parameters.Add(parameters[0]);
 cmd.Parameters.Add(parameters[1]);

 sqlconn.Open();
 // 执行存储过程并返回影响的行数
 Label1.Text = cmd.ExecuteNonQuery().ToString();
 sqlconn.Close();
 // 显示影响的行数和输出参数
 Label1.Text += "-" + parameters[0].Value.ToString() ;

CREATE PROCEDURE Categoriestest4
@id int output,
@CategoryName nvarchar(15)
AS
insert into dbo.Categories 
(CategoryName,[Description],[Picture])
values (@CategoryName,'test1',null)
set @id = @@IDENTITY
GO

SqlConnection sqlconn = new SqlConnection(conn);
 SqlCommand cmd = new SqlCommand();
 cmd.Connection = sqlconn;
 cmd.CommandText = "Categoriestest5";
 cmd.CommandType = CommandType.StoredProcedure;
 // 创建参数
 IDataParameter[] parameters = {
 new SqlParameter("@Id", SqlDbType.Int,4) ,
 new SqlParameter("@CategoryName", SqlDbType.NVarChar,15) ,
 new SqlParameter("rval", SqlDbType.Int,4)
 };
 // 设置参数类型
 parameters[0].Direction = ParameterDirection.Output; // 设置为输出参数
 parameters[1].Value = "testCategoryName"; // 给输入参数赋值
 parameters[2].Direction = ParameterDirection.ReturnValue; // 设置为返回值
 // 添加参数
 cmd.Parameters.Add(parameters[0]);
 cmd.Parameters.Add(parameters[1]);
 cmd.Parameters.Add(parameters[2]);

 sqlconn.Open();
 // 执行存储过程并返回影响的行数
 Label1.Text = cmd.ExecuteNonQuery().ToString();
 sqlconn.Close();
 // 显示影响的行数，输出参数和返回值
 Label1.Text += "-" + parameters[0].Value.ToString() + "-" + parameters[2].Value.ToString();

CREATE PROCEDURE Categoriestest5
@id int output,
@CategoryName nvarchar(15)
AS
insert into dbo.Categories 
(CategoryName,[Description],[Picture])
values (@CategoryName,'test1',null)
set @id = @@IDENTITY
return @@rowcount
GO

 SqlConnection sqlconn = new SqlConnection(conn);
 SqlCommand cmd = new SqlCommand();
 cmd.Connection = sqlconn;
 cmd.CommandText = "Categoriestest6";
 cmd.CommandType = CommandType.StoredProcedure;
 // 创建参数
 IDataParameter[] parameters = {
 new SqlParameter("@Id", SqlDbType.Int,4) ,
 new SqlParameter("@CategoryName", SqlDbType.NVarChar,15) ,
 new SqlParameter("rval", SqlDbType.Int,4) // 返回值
 };
 // 设置参数类型
 parameters[0].Direction = ParameterDirection.Output; // 设置为输出参数
 parameters[1].Value = "testCategoryName"; // 给输入参数赋值
 parameters[2].Direction = ParameterDirection.ReturnValue; // 设置为返回值
 // 添加参数
 cmd.Parameters.Add(parameters[0]);
 cmd.Parameters.Add(parameters[1]);
 cmd.Parameters.Add(parameters[2]);

 SqlDataAdapter dp = new SqlDataAdapter(cmd);
 DataSet ds = new DataSet();
 // 填充dataset
 dp.Fill(ds);
 // 显示结果集
 GridView1.DataSource = ds.Tables[0];
 GridView1.DataBind();
 Label1.Text = "";
 // 显示输出参数和返回值
 Label1.Text += parameters[0].Value.ToString() + "-" + parameters[2].Value.ToString();

CREATE PROCEDURE Categoriestest6
@id int output,
@CategoryName nvarchar(15)
AS
insert into dbo.Categories 
(CategoryName,[Description],[Picture])
values (@CategoryName,'test1',null)
set @id = @@IDENTITY
select * from Categories
return @@rowcount
GO

 SqlConnection sqlconn = new SqlConnection(conn);
 SqlCommand cmd = new SqlCommand(); cmd.Connection = sqlconn;
 cmd.CommandText = "Categoriestest7";
 cmd.CommandType = CommandType.StoredProcedure;

 SqlDataAdapter dp = new SqlDataAdapter(cmd);
 DataSet ds = new DataSet();
 // 填充dataset
 dp.Fill(ds);
 // 显示结果集1
 GridView1.DataSource = ds.Tables[0];
 GridView1.DataBind();
 // 显示结果集2
 GridView2.DataSource = ds.Tables[1];
 GridView2.DataBind();

CREATE PROCEDURE Categoriestest7
AS
select * from Categories
select * from Categories
GO

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