.net调用存储过程详解

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本文的数据库用的是sql server自带数据Northwind

 连接字符串

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

 

confige文件

 

 

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

 

 

1. 只返回单一记录集的存储过程

 

 

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-->     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();

 

存储过程Categoriestest1

 

Code
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-->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

 

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-->       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();

 

 存储过程Categoriestest2

 

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

 

3. 有返回值的存储过程

c#代码部分

 

Code
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-->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() ;

 

存储过程Categoriestest3

 

 

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

4. 有输入参数和输出参数的存储过程

c#代码部分

 

 

Code
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--> 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() ;

存储过程Categoriestest4      

 

Code
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-->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

 

5. 同时具有返回值、输入参数、输出参数的存储过程

c#代码部分

 

Code
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--> 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();

 

 

 存储过程Categoriestest5

 

Code
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-->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

 

 6. 同时返回参数和记录集的存储过程

c#代码部分

 

Code
<!--

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-->        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();

 

存储过程Categoriestest6

 

Code
<!--

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-->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

 

7. 返回多个记录集的存储过程

 c#代码部分

 

Code
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-->     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();

 

存储过程Categoriestest7

 

Code
<!--

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