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.net 中如何使用存储过程output和return值

2010-02-22 16:09 260 查看
数据库中使用output值和return值：

-------------------------------------------------------

--数获存储过程中的OUTPUT参数和返回值获取

-------------------------------------------------------

CREATE PROCEDURE Proc_Test;1

@INPUT int,

@OUTPUT int output

AS

BEGIN

SET NOCOUNT ON;

SELECT @OUTPUT=@INPUT

RETURN @INPUT+1

END

GO

--调用output值和return返回值

DECLARE @OUT int,@RETURN int

EXEC @RETURN=Proc_Test;1

0,

@OUT output

SELECT [返回值]=@RETURN,[OUTPUT值]=@OUT

返回值 OUTPUT值

----------- -----------

1 0

-----------------------------------------------------

-- SP_EXECUTESQL中的OUTPUT参数获取

-----------------------------------------------------

DECLARE @Para1 int,@Para2 int,@SUM int

EXECUTE SP_EXECUTESQL

N'SELECT @SUM=@Para1+@Para2 ',

N'@Para1 INT,@Para2 INT,@SUM INT OUTPUT ',

5,5,@SUM OUTPUT

SELECT [OUTPUT值]=@SUM

OUTPUT值

-----------

10

======================================================================

下面在.net下调用存储过程：

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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>使用存储过程</title>
<mce:style type="text/css"><!--
#form1
{
margin-left: 206px;
}

--></mce:style><style type="text/css" mce_bogus="1"> #form1
{
margin-left: 206px;
}
</style>
</head>
<body>
<form id="form1" runat="server" style="border-style: none; width: 339px;">
<div>

</div>
<asp:Label ID="Label3" runat="server" Text=" 输 入 参 数："></asp:Label>
<asp:TextBox ID="Input" runat="server" BorderStyle="NotSet"></asp:TextBox>
<asp:ImageButton ID="ImageButton1" runat="server" ImageUrl="~/提交.GIF"
onclick="ImageButton1_Click" style="height: 20px" />
<hr width="95%" />
<br />
<asp:Label ID="Label1" runat="server" Text="OUTPUT参数："></asp:Label>
<asp:Label ID="Output" runat="server" BorderColor="#6600FF" BorderStyle="None"
BorderWidth="1px" Width="100px">暂无</asp:Label>
<hr width="95%" />
<br />
<asp:Label ID="Label4" runat="server" Text="RETURN返回："></asp:Label>
<asp:Label ID="Return" runat="server" BorderColor="#6600FF" BorderWidth="1px"
Width="100px" BorderStyle="None">暂无</asp:Label>
</form>
</body>
</html>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>使用存储过程</title>
<mce:style type="text/css"><!--
#form1
{
margin-left: 206px;
}

--></mce:style><style type="text/css" mce_bogus="1"> #form1
{
margin-left: 206px;
}
</style>
</head>
<body>
<form id="form1" runat="server" style="border-style: none; width: 339px;">
<div>

</div>
<asp:Label ID="Label3" runat="server" Text=" 输 入 参 数："></asp:Label>
<asp:TextBox ID="Input" runat="server" BorderStyle="NotSet"></asp:TextBox>
<asp:ImageButton ID="ImageButton1" runat="server" ImageUrl="~/提交.GIF"
onclick="ImageButton1_Click" style="height: 20px" />
<hr width="95%" />
<br />
<asp:Label ID="Label1" runat="server" Text="OUTPUT参数："></asp:Label>
<asp:Label ID="Output" runat="server" BorderColor="#6600FF" BorderStyle="None"
BorderWidth="1px" Width="100px">暂无</asp:Label>
<hr width="95%" />
<br />
<asp:Label ID="Label4" runat="server" Text="RETURN返回："></asp:Label>
<asp:Label ID="Return" runat="server" BorderColor="#6600FF" BorderWidth="1px"
Width="100px" BorderStyle="None">暂无</asp:Label>
</form>
</body>
</html>

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protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
{
//定义数据库连接和SqlCommand对象
SqlConnection Conn=new SqlConnection(ConfigurationManager.ConnectionStrings["TestConnection"].ToString());
SqlCommand Cmd=new SqlCommand("Proc_Test;1",Conn);
Cmd.CommandType = CommandType.StoredProcedure;

//指定参数类型
SqlParameter input = Cmd.Parameters.Add("@INPUT", SqlDbType.Int);
SqlParameter output = Cmd.Parameters.Add("@OUTPUT", SqlDbType.Int);
SqlParameter return_ = Cmd.Parameters.Add("@RETURN", SqlDbType.Int);

//指定参数方向
input.Direction = ParameterDirection.Input;
output.Direction = ParameterDirection.Output;
return_.Direction = ParameterDirection.ReturnValue;

//参数赋值
if (Input.Text == "")
{
input.Value = 0;
}
else
{
input.Value = Convert.ToInt32(Input.Text);
}

//调用存储过程
Conn.Open();
Cmd.ExecuteNonQuery();
Conn.Close();

Output.Text = output.Value.ToString();//获取output值
Return.Text = return_.Value.ToString();//获取返回值

}
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