C# 获取存储过程的返回值与查询结果

[panyuan911]

C# 怎么执行一个存储过程后获取返回值“Return Value”和查询结果？

存储过程类似：

DECLARE @ret int
select @ret = count(id) FROM UserInfo
SELECT TOP (@PageSize) * FROM UserInfo WHERE UserName not in (SELECT ((@Page-1)*@PageSize) UserName FROM UserInfo)
return @ret

获取总数量和经过分页的查询结果

我要执行的是另外一个存储过程：aspnet_Membership_GetAllUsers，差不多

[ck11926375]

ParameterDirection.ReturnValue

[panyuan911]

[Quote=引用 1 楼 ck11926375 的回复:]
ParameterDirection.ReturnValue
[/Quote]
具体怎么用？谢谢

[criedshy]

public static int User_Add(User us)
     {
         int iRet;
         SqlConnection conn = new SqlConnection(Conn_Str);
         SqlCommand cmd = new SqlCommand("User_Add", conn);
         cmd.CommandType = CommandType.StoredProcedure;
         cmd.Parameters.AddWithValue("@UName", us.UName);
         cmd.Parameters.AddWithValue("@UPass", us.UPass);
         cmd.Parameters.AddWithValue("@PassQuestion", us.PassQuestion);
         cmd.Parameters.AddWithValue("@PassKey", us.PassKey);
         cmd.Parameters.AddWithValue("@Email", us.Email);
         cmd.Parameters.AddWithValue("@RName", us.RName);
         cmd.Parameters.AddWithValue("@Area", us.Area);
         cmd.Parameters.AddWithValue("@Address", us.Address);
         cmd.Parameters.AddWithValue("@ZipCodes", us.ZipCodes);
         cmd.Parameters.AddWithValue("@Phone", us.Phone);
         cmd.Parameters.AddWithValue("@QQ", us.QQ);
         cmd.Parameters.Add("@RETURN_VALUE", "").Direction=ParameterDirection.ReturnValue;       
         try
         {
             conn.Open();
             cmd.ExecuteNonQuery();
             iRet = (int)cmd.Parameters["@RETURN_VALUE"].Value;
         }
         catch (SqlException ex)
         {
             throw ex;
         }
         finally
         {
             conn.Close();
         }
         return iRet;
     }

[SAP道长]

lou shang de.

[cyx1225]

支持3楼 …只是代码有点长了

cmd.Parameters.Add("@RETURN_VALUE", "").Direction=ParameterDirection.ReturnValue;   //添加获得返回值的参数       
         try
         {
             conn.Open();
             cmd.ExecuteNonQuery();
             iRet = (int)cmd.Parameters["@RETURN_VALUE"].Value;  //获得返回值的地方
         }

[panyuan911]

问题是里面还有一条查询语句呢。

SqlConnection conn = new SqlConnection(SqlHelper.SqlConnectionString);
SqlCommand cmd = new SqlCommand();
cmd.CommandText = "aspnet_Membership_GetAllUsers";
cmd.Connection = conn;
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@ApplicationName", "CFPhoto");
cmd.Parameters.AddWithValue("@PageIndex", ThisPage);
cmd.Parameters.AddWithValue("@PageSize", PageSize);
cmd.Parameters.Add("@RETURN_VALUE","").Direction = ParameterDirection.ReturnValue;
conn.Open();
SqlDataReader dr = cmd.ExecuteReader();//获取查询语句结果
Label1.Text = cmd.Parameters["@RETURN_VALUE"].Value.ToString();
GridView1.DataSource = dr;
GridView1.DataBind();
dr.Close();

难道要这样？

SqlConnection conn = new SqlConnection(SqlHelper.SqlConnectionString);
SqlCommand cmd = new SqlCommand();
cmd.CommandText = "aspnet_Membership_GetAllUsers";
cmd.Connection = conn;
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@ApplicationName", "CFPhoto");
cmd.Parameters.AddWithValue("@PageIndex", ThisPage);
cmd.Parameters.AddWithValue("@PageSize", PageSize);
cmd.Parameters.Add("@RETURN_VALUE","").Direction = ParameterDirection.ReturnValue;
conn.Open();
cmd.ExecuteNonQuery();//先执行一遍
SqlDataReader dr = cmd.ExecuteReader();//再执行一遍
Label1.Text = cmd.Parameters["@RETURN_VALUE"].Value.ToString();
GridView1.DataSource = dr;
GridView1.DataBind();
dr.Close();

看着很不爽。

[苏飞论坛]

SqlConnection conn = new SqlConnection(SqlHelper.SqlConnectionString);
SqlCommand cmd = new SqlCommand();
cmd.CommandText = "aspnet_Membership_GetAllUsers";
cmd.Connection = conn;
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@ApplicationName", "CFPhoto");
cmd.Parameters.AddWithValue("@PageIndex", ThisPage);
cmd.Parameters.AddWithValue("@PageSize", PageSize);
cmd.Parameters.Add("@RETURN_VALUE","").Direction = ParameterDirection.ReturnValue;
conn.Open();
cmd.ExecuteNonQuery();//先执行一遍
SqlDataReader dr = cmd.ExecuteReader();//再执行一遍
Label1.Text = cmd.Parameters["@RETURN_VALUE"].Value.ToString();
GridView1.DataSource = dr;
GridView1.DataBind();
dr.Close();

cmd.CommandText = "aspnet_Membership_GetAllUsers";
是写的你的存储过程的名称就行了，
cmd.CommandType = CommandType.StoredProcedure;这个就代表执行的是存储过程
而如果是cmd.CommandType = CommandType.Text;这也是默认的，这样就是执行的SQl语句
所以这样是可以的

ParameterDirection.ReturnValue这个就是取返回结果的Label1.Text 值就是返回值

[criedshy]

那你可以用存储过程输出参数啊

[criedshy]

SqlConnection conn = new SqlConnection(SqlHelper.SqlConnectionString);
SqlCommand cmd = new SqlCommand();
cmd.CommandText = "aspnet_Membership_GetAllUsers";
cmd.Connection = conn;
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@ApplicationName", "CFPhoto");
cmd.Parameters.AddWithValue("@PageIndex", ThisPage);
cmd.Parameters.AddWithValue("@PageSize", PageSize);
cmd.Parameters.Add("@RETURN_VALUE","").Direction = ParameterDirection.Output;
conn.Open();
//cmd.ExecuteNonQuery();//先执行一遍
SqlDataReader dr = cmd.ExecuteReader();//再执行一遍
Label1.Text = cmd.Parameters["@RETURN_VALUE"].Value.ToString();
GridView1.DataSource = dr;
GridView1.DataBind();
dr.Close();